Add lm3s6918 system timer logic
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@1773 42af7a65-404d-4744-a932-0658087f49c3
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arch/arm/src/common/cortexm3_nvic.h
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arch/arm/src/common/cortexm3_nvic.h
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/************************************************************************************
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* arch/arm/src/common/cortexm3_nvic.h
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*
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* Copyright (C) 2009 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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************************************************************************************/
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#ifndef __ARCH_ARM_SRC_COMMON_CORTEXM3_NVIC_H
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#define __ARCH_ARM_SRC_COMMON_CORTEXM3_NVIC_H
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/************************************************************************************
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* Included Files
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************************************************************************************/
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#include <nuttx/config.h>
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#include <sys/types.h>
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/************************************************************************************
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* Definitions
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************************************************************************************/
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/* NVIC base address ****************************************************************/
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#define CORTEXM3_NVIC_BASE 0xe000e000
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/* NVIC register offsets ************************************************************/
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#define NVIC_INTCTRL_TYPE_OFFSET 0x0004 /* Interrupt controller type */
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#define NVIC_SYSTICK_CTRL_OFFSET 0x0010 /* SysTick control and status register */
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#define NVIC_SYSTICK_RELOAD_OFFSET 0x0014 /* SysTick reload value register */
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#define NVIC_SYSTICK_CURRENT_OFFSET 0x0018 /* SysTick current value register */
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#define NVIC_SYSTICK_CALIB_OFFSET 0x001c /* SysTick calibration value register */
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#define NVIC_IRQ_ENABLE_OFFSET(n) (0x0100 + 4*((n) >> 5))
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#define NVIC_IRQ0_31_ENABLE_OFFSET 0x0100 /* IRQ 0-31 set enable register */
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#define NVIC_IRQ32_63_ENABLE_OFFSET 0x0104 /* IRQ 32-63 set enable register */
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#define NVIC_IRQ64_95_ENABLE_OFFSET 0x0108 /* IRQ 64-95 set enable register */
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#define NVIC_IRQ96_127_ENABLE_OFFSET 0x010c /* IRQ 96-127 set enable register */
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#define NVIC_IRQ128_159_ENABLE_OFFSET 0x0110 /* IRQ 128-159 set enable register */
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#define NVIC_IRQ160_191_ENABLE_OFFSET 0x0114 /* IRQ 160-191 set enable register */
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#define NVIC_IRQ192_223_ENABLE_OFFSET 0x0118 /* IRQ 192-223 set enable register */
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#define NVIC_IRQ224_239_ENABLE_OFFSET 0x011c /* IRQ 224-239 set enable register */
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#define NVIC_IRQ_CLEAR_OFFSET(n) (0x0180 + 4*((n) >> 5))
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#define NVIC_IRQ0_31_CLEAR_OFFSET 0x0180 /* IRQ 0-31 clear enable register */
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#define NVIC_IRQ32_63_CLEAR_OFFSET 0x0184 /* IRQ 32-63 clear enable register */
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#define NVIC_IRQ64_95_CLEAR_OFFSET 0x0188 /* IRQ 64-95 clear enable register */
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#define NVIC_IRQ96_127_CLEAR_OFFSET 0x018c /* IRQ 96-127 clear enable register */
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#define NVIC_IRQ128_159_CLEAR_OFFSET 0x0190 /* IRQ 128-159 clear enable register */
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#define NVIC_IRQ160_191_CLEAR_OFFSET 0x0194 /* IRQ 160-191 clear enable register */
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#define NVIC_IRQ192_223_CLEAR_OFFSET 0x0198 /* IRQ 192-223 clear enable register */
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#define NVIC_IRQ224_239_CLEAR_OFFSET 0x019c /* IRQ 224-2391 clear enable register */
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#define NVIC_IRQ_PEND_OFFSET(n) (0x0200 + 4*((n) >> 5))
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#define NVIC_IRQ0_31_PEND_OFFSET 0x0200 /* IRQ 0-31 set pending register */
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#define NVIC_IRQ32_63_PEND_OFFSET 0x0204 /* IRQ 32-63 set pending register */
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#define NVIC_IRQ64_95_PEND_OFFSET 0x0208 /* IRQ 64-95 set pending register */
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#define NVIC_IRQ96_127_PEND_OFFSET 0x020c /* IRQ 96-127 set pending register */
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#define NVIC_IRQ128_159_PEND_OFFSET 0x0210 /* IRQ 128-159 set pending register */
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#define NVIC_IRQ160_191_PEND_OFFSET 0x0214 /* IRQ 160-191 set pending register */
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#define NVIC_IRQ192_223_PEND_OFFSET 0x0218 /* IRQ 192-2231 set pending register */
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#define NVIC_IRQ224_239_PEND_OFFSET 0x021c /* IRQ 224-2391 set pending register */
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#define NVIC_IRQ_CLRPEND_OFFSET(n) (0x0280 + 4*((n) >> 5))
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#define NVIC_IRQ0_31_CLRPEND_OFFSET 0x0280 /* IRQ 0-31 clear pending register */
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#define NVIC_IRQ32_63_CLRPEND_OFFSET 0x0284 /* IRQ 32-63 clear pending register */
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#define NVIC_IRQ64_95_CLRPEND_OFFSET 0x0288 /* IRQ 64-95 clear pending register */
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#define NVIC_IRQ96_127_CLRPEND_OFFSET 0x028c /* IRQ 96-127 clear pending register */
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#define NVIC_IRQ128_159_CLRPEND_OFFSET 0x0290 /* IRQ 128-159 clear pending register */
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#define NVIC_IRQ160_191_CLRPEND_OFFSET 0x0294 /* IRQ 160-191 clear pending register */
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#define NVIC_IRQ192_223_CLRPEND_OFFSET 0x0298 /* IRQ 192-223 clear pending register */
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#define NVIC_IRQ224_239_CLRPEND_OFFSET 0x029c /* IRQ 224-239 clear pending register */
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#define NVIC_IRQ_ACTIVE_OFFSET(n) (0x0300 + 4*((n) >> 5))
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#define NVIC_IRQ0_31_ACTIVE_OFFSET 0x0300 /* IRQ 0-31 active bit register */
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#define NVIC_IRQ32_63_ACTIVE_OFFSET 0x0304 /* IRQ 32-63 active bit register */
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#define NVIC_IRQ64_95_ACTIVE_OFFSET 0x0308 /* IRQ 64-95 active bit register */
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#define NVIC_IRQ96_127_ACTIVE_OFFSET 0x030c /* IRQ 96-127 active bit register */
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#define NVIC_IRQ128_159_ACTIVE_OFFSET 0x0310 /* IRQ 128-159 active bit register */
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#define NVIC_IRQ160_191_ACTIVE_OFFSET 0x0314 /* IRQ 160-191 active bit register */
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#define NVIC_IRQ192_223_ACTIVE_OFFSET 0x0318 /* IRQ 192-223 active bit register */
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#define NVIC_IRQ224_239_ACTIVE_OFFSET 0x031c /* IRQ 224-239 active bit register */
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#define NVIC_IRQ_PRIORITY_OFFSET(n) (0x0400 + 4*((n) >> 5))
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#define NVIC_IRQ0_31_PRIORITY_OFFSET 0x0400 /* IRQ 0-31 priority register */
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#define NVIC_IRQ32_63_PRIORITY_OFFSET 0x0404 /* IRQ 32-63 priority register */
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#define NVIC_IRQ64_95_PRIORITY_OFFSET 0x0408 /* IRQ 64-95 priority register */
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#define NVIC_IRQ96_127_PRIORITY_OFFSET 0x040c /* IRQ 96-127 priority register */
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#define NVIC_IRQ128_159_PRIORITY_OFFSET 0x0410 /* IRQ 128-159 priority register */
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#define NVIC_IRQ160_191_PRIORITY_OFFSET 0x0414 /* IRQ 160-191 priority register */
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#define NVIC_IRQ192_223_PRIORITY_OFFSET 0x0418 /* IRQ 192-223 priority register */
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#define NVIC_IRQ224_239_PRIORITY_OFFSET 0x041c /* IRQ 224-239 priority register */
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#define NVIC_CPUID_BASE_OFFSET 0x0d00 /* CPUID base register */
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#define NVIC_INTCTRL_OFFSET 0x0d04 /* Interrupt control state register */
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#define NVIC_VECTAB_OFFSET 0x0d08 /* Vector table offset register */
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#define NVIC_AIRC_OFFSET 0x0d0c /* Application interrupt/reset contol registr */
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#define NVIC_SYSCON_OFFSET 0x0d10 /* System control register */
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#define NVIC_CFGCON_OFFSET 0x0d14 /* Configuration control register */
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#define NVIC_SYSH4_7_PRIORITY_OFFSET 0x0d18 /* System handlers 4-7 priority register */
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#define NVIC_SYSH8_11_PRIORITY_OFFSET 0x0d1c /* System handler 8-11 priority register */
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#define NVIC_SYSH12_15_PRIORITY_OFFSET 0x0d20 /* System handler 12-15 priority register */
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#define NVIC_SYSHCON_OFFSET 0x0d24 /* System handler control and state register */
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#define NVIC_CFAULTS_OFFSET 0x0d28 /* Configurable fault status register */
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#define NVIC_HFAULTS_OFFSET 0x0d2c /* Hard fault status register */
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#define NVIC_DFAULTS_OFFSET 0x0d30 /* Debug fault status register */
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#define NVIC_MEMMANAGE_ADDR_OFFSET 0x0d34 /* Mem manage address register */
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#define NVIC_BFAULT_ADDR_OFFSET 0x0d38 /* Bus fault address register */
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#define NVIC_AFAULTS_OFFSET 0x0d3c /* Auxiliary fault status register */
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#define NVIC_PFR0_OFFSET 0x0d40 /* Processor feature register 0 */
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#define NVIC_PFR1_OFFSET 0x0d44 /* Processor feature register 1 */
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#define NVIC_DFR0_OFFSET 0x0d48 /* Debug feature register 0 */
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#define NVIC_AFR0_OFFSET 0x0d4c /* Auxiliary feature register 0 */
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#define NVIC_MMFR0_OFFSET 0x0d50 /* Memory model feature register 0 */
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#define NVIC_MMFR1_OFFSET 0x0d54 /* Memory model feature register 1 */
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#define NVIC_MMFR2_OFFSET 0x0d58 /* Memory model feature register 2 */
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#define NVIC_MMFR3_OFFSET 0x0d5c /* Memory model feature register 3 */
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#define NVIC_ISAR0_OFFSET 0x0d60 /* ISA feature register 0 */
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#define NVIC_ISAR1_OFFSET 0x0d64 /* ISA feature register 1 */
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#define NVIC_ISAR2_OFFSET 0x0d68 /* ISA feature register 2 */
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#define NVIC_ISAR3_OFFSET 0x0d6c /* ISA feature register 3 */
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#define NVIC_ISAR4_OFFSET 0x0d70 /* ISA feature register 4 */
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#define NVIC_STIR_OFFSET 0x0f00 /* Software trigger interrupt register */
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#define NVIC_PID4_OFFSET 0x0fd0 /* Peripheral identification register (PID4) */
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#define NVIC_PID5_OFFSET 0x0fd4 /* Peripheral identification register (PID5) */
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#define NVIC_PID6_OFFSET 0x0fd8 /* Peripheral identification register (PID6) */
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#define NVIC_PID7_OFFSET 0x0fdc /* Peripheral identification register (PID7) */
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#define NVIC_PID0_OFFSET 0x0fe0 /* Peripheral identification register bits 7:0 (PID0) */
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#define NVIC_PID1_OFFSET 0x0fe4 /* Peripheral identification register bits 15:8 (PID1) */
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#define NVIC_PID2_OFFSET 0x0fe8 /* Peripheral identification register bits 23:16 (PID2) */
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#define NVIC_PID3_OFFSET 0x0fec /* Peripheral identification register bits 23:16 (PID3) */
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#define NVIC_CID0_OFFSET 0x0ff0 /* Component identification register bits 7:0 (CID0) */
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#define NVIC_CID1_OFFSET 0x0ff4 /* Component identification register bits 15:8 (CID0) */
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#define NVIC_CID2_OFFSET 0x0ff8 /* Component identification register bits 23:16 (CID0) */
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#define NVIC_CID3_OFFSET 0x0ffc /* Component identification register bits 23:16 (CID0) */
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/* NVIC register addresses **********************************************************/
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#define NVIC_INTCTRL_TYPE (CORTEXM3_NVIC_BASE + NVIC_INTCTRL_TYPE_OFFSET)
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#define NVIC_SYSTICK_CTRL (CORTEXM3_NVIC_BASE + NVIC_SYSTICK_CTRL_OFFSET)
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#define NVIC_SYSTICK_RELOAD (CORTEXM3_NVIC_BASE + NVIC_SYSTICK_RELOAD_OFFSET)
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#define NVIC_SYSTICK_CURRENT (CORTEXM3_NVIC_BASE + NVIC_SYSTICK_CURRENT_OFFSET)
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#define NVIC_SYSTICK_CALIB (CORTEXM3_NVIC_BASE + NVIC_SYSTICK_CALIB_OFFSET)
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#define NVIC_IRQ_ENABLE(n) (CORTEXM3_NVIC_BASE + NVIC_IRQ_ENABLE_OFFSET(n))
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#define NVIC_IRQ0_31_ENABLE (CORTEXM3_NVIC_BASE + NVIC_IRQ0_31_ENABLE_OFFSET)
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#define NVIC_IRQ32_63_ENABLE (CORTEXM3_NVIC_BASE + NVIC_IRQ32_63_ENABLE_OFFSET)
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#define NVIC_IRQ64_95_ENABLE (CORTEXM3_NVIC_BASE + NVIC_IRQ64_95_ENABLE_OFFSET)
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#define NVIC_IRQ96_127_ENABLE (CORTEXM3_NVIC_BASE + NVIC_IRQ96_127_ENABLE_OFFSET)
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#define NVIC_IRQ128_159_ENABLE (CORTEXM3_NVIC_BASE + NVIC_IRQ128_159_ENABLE_OFFSET)
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#define NVIC_IRQ160_191_ENABLE (CORTEXM3_NVIC_BASE + NVIC_IRQ160_191_ENABLE_OFFSET)
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#define NVIC_IRQ192_223_ENABLE (CORTEXM3_NVIC_BASE + NVIC_IRQ192_223_ENABLE_OFFSET)
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#define NVIC_IRQ224_239_ENABLE (CORTEXM3_NVIC_BASE + NVIC_IRQ224_239_ENABLE_OFFSET)
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#define NVIC_IRQ_CLEAR(n) (CORTEXM3_NVIC_BASE + NVIC_IRQ_CLEAR_OFFSET(n))
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#define NVIC_IRQ0_31_CLEAR (CORTEXM3_NVIC_BASE + NVIC_IRQ0_31_CLEAR_OFFSET)
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#define NVIC_IRQ32_63_CLEAR (CORTEXM3_NVIC_BASE + NVIC_IRQ32_63_CLEAR_OFFSET)
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#define NVIC_IRQ64_95_CLEAR (CORTEXM3_NVIC_BASE + NVIC_IRQ64_95_CLEAR_OFFSET)
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#define NVIC_IRQ96_127_CLEAR (CORTEXM3_NVIC_BASE + NVIC_IRQ96_127_CLEAR_OFFSET)
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#define NVIC_IRQ128_159_CLEAR (CORTEXM3_NVIC_BASE + NVIC_IRQ128_159_CLEAR_OFFSET)
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#define NVIC_IRQ160_191_CLEAR (CORTEXM3_NVIC_BASE + NVIC_IRQ160_191_CLEAR_OFFSET)
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#define NVIC_IRQ192_223_CLEAR (CORTEXM3_NVIC_BASE + NVIC_IRQ192_223_CLEAR_OFFSET)
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#define NVIC_IRQ224_239_CLEAR (CORTEXM3_NVIC_BASE + NVIC_IRQ224_239_CLEAR_OFFSET)
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#define NVIC_IRQ_PEND(n) (CORTEXM3_NVIC_BASE + NVIC_IRQ_PEND_OFFSET(n))
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#define NVIC_IRQ0_31_PEND (CORTEXM3_NVIC_BASE + NVIC_IRQ0_31_PEND_OFFSET)
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#define NVIC_IRQ32_63_PEND (CORTEXM3_NVIC_BASE + NVIC_IRQ32_63_PEND_OFFSET)
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#define NVIC_IRQ64_95_PEND (CORTEXM3_NVIC_BASE + NVIC_IRQ64_95_PEND_OFFSET)
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#define NVIC_IRQ96_127_PEND (CORTEXM3_NVIC_BASE + NVIC_IRQ96_127_PEND_OFFSET)
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#define NVIC_IRQ128_159_PEND (CORTEXM3_NVIC_BASE + NVIC_IRQ128_159_PEND_OFFSET)
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#define NVIC_IRQ160_191_PEND (CORTEXM3_NVIC_BASE + NVIC_IRQ160_191_PEND_OFFSET)
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#define NVIC_IRQ192_223_PEND (CORTEXM3_NVIC_BASE + NVIC_IRQ192_223_PEND_OFFSET)
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#define NVIC_IRQ224_239_PEND (CORTEXM3_NVIC_BASE + NVIC_IRQ224_239_PEND_OFFSET)
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#define NVIC_IRQ_CLRPEND(n) (CORTEXM3_NVIC_BASE + NVIC_IRQ_CLRPEND_OFFSET(n))
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#define NVIC_IRQ0_31_CLRPEND (CORTEXM3_NVIC_BASE + NVIC_IRQ0_31_CLRPEND_OFFSET)
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#define NVIC_IRQ32_63_CLRPEND (CORTEXM3_NVIC_BASE + NVIC_IRQ32_63_CLRPEND_OFFSET)
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#define NVIC_IRQ64_95_CLRPEND (CORTEXM3_NVIC_BASE + NVIC_IRQ64_95_CLRPEND_OFFSET)
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#define NVIC_IRQ96_127_CLRPEND (CORTEXM3_NVIC_BASE + NVIC_IRQ96_127_CLRPEND_OFFSET)
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#define NVIC_IRQ128_159_CLRPEND (CORTEXM3_NVIC_BASE + NVIC_IRQ128_159_CLRPEND_OFFSET)
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#define NVIC_IRQ160_191_CLRPEND (CORTEXM3_NVIC_BASE + NVIC_IRQ160_191_CLRPEND_OFFSET)
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#define NVIC_IRQ192_223_CLRPEND (CORTEXM3_NVIC_BASE + NVIC_IRQ192_223_CLRPEND_OFFSET)
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#define NVIC_IRQ224_239_CLRPEND (CORTEXM3_NVIC_BASE + NVIC_IRQ224_239_CLRPEND_OFFSET)
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#define NVIC_IRQ_ACTIVE(n) (CORTEXM3_NVIC_BASE + NVIC_IRQ_ACTIVE_OFFSET(n))
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#define NVIC_IRQ0_31_ACTIVE (CORTEXM3_NVIC_BASE + NVIC_IRQ0_31_ACTIVE_OFFSET)
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#define NVIC_IRQ32_63_ACTIVE (CORTEXM3_NVIC_BASE + NVIC_IRQ32_63_ACTIVE_OFFSET)
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#define NVIC_IRQ64_95_ACTIVE (CORTEXM3_NVIC_BASE + NVIC_IRQ64_95_ACTIVE_OFFSET)
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#define NVIC_IRQ96_127_ACTIVE (CORTEXM3_NVIC_BASE + NVIC_IRQ96_127_ACTIVE_OFFSET)
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#define NVIC_IRQ128_159_ACTIVE (CORTEXM3_NVIC_BASE + NVIC_IRQ128_159_ACTIVE_OFFSET)
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#define NVIC_IRQ160_191_ACTIVE (CORTEXM3_NVIC_BASE + NVIC_IRQ160_191_ACTIVE_OFFSET)
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#define NVIC_IRQ192_223_ACTIVE (CORTEXM3_NVIC_BASE + NVIC_IRQ192_223_ACTIVE_OFFSET)
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#define NVIC_IRQ224_239_ACTIVE (CORTEXM3_NVIC_BASE + NVIC_IRQ224_239_ACTIVE_OFFSET)
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#define NVIC_IRQ_PRIORITY(n) (CORTEXM3_NVIC_BASE + NVIC_IRQ_PRIORITY_OFFSET(n))
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#define NVIC_IRQ0_31_PRIORITY (CORTEXM3_NVIC_BASE + NVIC_IRQ0_31_PRIORITY_OFFSET)
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#define NVIC_IRQ32_63_PRIORITY (CORTEXM3_NVIC_BASE + NVIC_IRQ32_63_PRIORITY_OFFSET)
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#define NVIC_IRQ64_95_PRIORITY (CORTEXM3_NVIC_BASE + NVIC_IRQ64_95_PRIORITY_OFFSET)
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#define NVIC_IRQ96_127_PRIORITY (CORTEXM3_NVIC_BASE + NVIC_IRQ96_127_PRIORITY_OFFSET)
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#define NVIC_IRQ128_159_PRIORITY (CORTEXM3_NVIC_BASE + NVIC_IRQ128_159_PRIORITY_OFFSET)
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#define NVIC_IRQ160_191_PRIORITY (CORTEXM3_NVIC_BASE + NVIC_IRQ160_191_PRIORITY_OFFSET)
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#define NVIC_IRQ192_223_PRIORITY (CORTEXM3_NVIC_BASE + NVIC_IRQ192_223_PRIORITY_OFFSET)
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#define NVIC_IRQ224_239_PRIORITY (CORTEXM3_NVIC_BASE + NVIC_IRQ224_239_PRIORITY_OFFSET)
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#define NVIC_CPUID_BASE (CORTEXM3_NVIC_BASE + NVIC_CPUID_BASE_OFFSET)
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#define NVIC_INTCTRL (CORTEXM3_NVIC_BASE + NVIC_INTCTRL_OFFSET)
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#define NVIC_VECTAB (CORTEXM3_NVIC_BASE + NVIC_VECTAB_OFFSET)
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#define NVIC_AIRC (CORTEXM3_NVIC_BASE + NVIC_AIRC_OFFSET)
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#define NVIC_SYSCON (CORTEXM3_NVIC_BASE + NVIC_SYSCON_OFFSET)
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#define NVIC_CFGCON (CORTEXM3_NVIC_BASE + NVIC_CFGCON_OFFSET)
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#define NVIC_SYSH4_7_PRIORITY (CORTEXM3_NVIC_BASE + NVIC_SYSH4_7_PRIORITY_OFFSET)
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#define NVIC_SYSH8_11_PRIORITY (CORTEXM3_NVIC_BASE + NVIC_SYSH8_11_PRIORITY_OFFSET)
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#define NVIC_SYSH12_15_PRIORITY (CORTEXM3_NVIC_BASE + NVIC_SYSH12_15_PRIORITY_OFFSET)
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#define NVIC_SYSHCON (CORTEXM3_NVIC_BASE + NVIC_SYSHCON_OFFSET)
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#define NVIC_CFAULTS (CORTEXM3_NVIC_BASE + NVIC_CFAULTS_OFFSET)
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#define NVIC_HFAULTS (CORTEXM3_NVIC_BASE + NVIC_HFAULTS_OFFSET)
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#define NVIC_DFAULTS (CORTEXM3_NVIC_BASE + NVIC_DFAULTS_OFFSET)
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#define NVIC_MEMMANAGE_ADDR (CORTEXM3_NVIC_BASE + NVIC_MEMMANAGE_ADDR_OFFSET)
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#define NVIC_BFAULT_ADDR (CORTEXM3_NVIC_BASE + NVIC_BFAULT_ADDR_OFFSET)
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#define NVIC_AFAULTS (CORTEXM3_NVIC_BASE + NVIC_AFAULTS_OFFSET)
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||||
#define NVIC_PFR0 (CORTEXM3_NVIC_BASE + NVIC_PFR0_OFFSET)
|
||||
#define NVIC_PFR1 (CORTEXM3_NVIC_BASE + NVIC_PFR1_OFFSET)
|
||||
#define NVIC_DFR0 (CORTEXM3_NVIC_BASE + NVIC_DFR0_OFFSET)
|
||||
#define NVIC_AFR0 (CORTEXM3_NVIC_BASE + NVIC_AFR0_OFFSET)
|
||||
#define NVIC_MMFR0 (CORTEXM3_NVIC_BASE + NVIC_MMFR0_OFFSET)
|
||||
#define NVIC_MMFR1 (CORTEXM3_NVIC_BASE + NVIC_MMFR1_OFFSET)
|
||||
#define NVIC_MMFR2 (CORTEXM3_NVIC_BASE + NVIC_MMFR2_OFFSET)
|
||||
#define NVIC_MMFR3 (CORTEXM3_NVIC_BASE + NVIC_MMFR3_OFFSET)
|
||||
#define NVIC_ISAR0 (CORTEXM3_NVIC_BASE + NVIC_ISAR0_OFFSET)
|
||||
#define NVIC_ISAR1 (CORTEXM3_NVIC_BASE + NVIC_ISAR1_OFFSET)
|
||||
#define NVIC_ISAR2 (CORTEXM3_NVIC_BASE + NVIC_ISAR2_OFFSET)
|
||||
#define NVIC_ISAR3 (CORTEXM3_NVIC_BASE + NVIC_ISAR3_OFFSET)
|
||||
#define NVIC_ISAR4 (CORTEXM3_NVIC_BASE + NVIC_ISAR4_OFFSET)
|
||||
#define NVIC_STIR (CORTEXM3_NVIC_BASE + NVIC_STIR_OFFSET)
|
||||
#define NVIC_PID4 (CORTEXM3_NVIC_BASE + NVIC_PID4_OFFSET)
|
||||
#define NVIC_PID5 (CORTEXM3_NVIC_BASE + NVIC_PID5_OFFSET)
|
||||
#define NVIC_PID6 (CORTEXM3_NVIC_BASE + NVIC_PID6_OFFSET)
|
||||
#define NVIC_PID7 (CORTEXM3_NVIC_BASE + NVIC_PID7_OFFSET)
|
||||
#define NVIC_PID0 (CORTEXM3_NVIC_BASE + NVIC_PID0_OFFSET)
|
||||
#define NVIC_PID1 (CORTEXM3_NVIC_BASE + NVIC_PID1_OFFSET)
|
||||
#define NVIC_PID2 (CORTEXM3_NVIC_BASE + NVIC_PID2_OFFSET)
|
||||
#define NVIC_PID3 (CORTEXM3_NVIC_BASE + NVIC_PID3_OFFSET)
|
||||
#define NVIC_CID0 (CORTEXM3_NVIC_BASE + NVIC_CID0_OFFSET)
|
||||
#define NVIC_CID1 (CORTEXM3_NVIC_BASE + NVIC_CID1_OFFSET)
|
||||
#define NVIC_CID2 (CORTEXM3_NVIC_BASE + NVIC_CID2_OFFSET)
|
||||
#define NVIC_CID3 (CORTEXM3_NVIC_BASE + NVIC_CID3_OFFSET)
|
||||
|
||||
/* NVIC register bit definitions ****************************************************/
|
||||
|
||||
/* Interrrupt controller type (INCTCTL_TYPE) */
|
||||
|
||||
#define NVIC_INTCTRL_TYPE_INTLINESNUM_SHIFT 0 /* Bits 4-0: Number of interrupt intputs / 32 */
|
||||
#define NVIC_INTCTRL_TYPE_INTLINESNUM_MASK (0x1f << NVIC_INTCTRL_TYPE_INTLINESNUM_SHIFT)
|
||||
|
||||
/* SysTick control and status register (SYSTICK_CTRL) */
|
||||
|
||||
#define NVIC_SYSTICK_CTRL_ENABLE (1 << 0) /* Bit 0: Enable */
|
||||
#define NVIC_SYSTICK_CTRL_TICKINT (1 << 1) /* Bit 1: Tick interrupt */
|
||||
#define NVIC_SYSTICK_CTRL_CLKSOURCE (1 << 2) /* Bit 2: Clock source */
|
||||
#define NVIC_SYSTICK_CTRL_COUNTFLAG (1 << 16) /* Bit 16: Count Flag */
|
||||
|
||||
/* SysTick reload value register (SYSTICK_RELOAD) */
|
||||
|
||||
#define NVIC_SYSTICK_RELOAD_SHIFT 0 /* Bits 23-0: Timer reload value */
|
||||
#define NVIC_SYSTICK_RELOAD_MASK (0x00ffffff << NVIC_SYSTICK_RELOAD_SHIFT)
|
||||
|
||||
/* SysTick current value registe (SYSTICK_CURRENT) */
|
||||
|
||||
#define NVIC_SYSTICK_CURRENT_SHIFT 0 /* Bits 23-0: Timer current value */
|
||||
#define NVIC_SYSTICK_CURRENT_MASK (0x00ffffff << NVIC_SYSTICK_RELOAD_SHIFT)
|
||||
|
||||
/* SysTick calibration value register (SYSTICK_CALIB) */
|
||||
|
||||
#define NVIC_SYSTICK_CALIB_TENMS_SHIFT 0 /* Bits 23-0: Calibration value */
|
||||
#define NVIC_SYSTICK_CALIB_TENMS_MASK (0x00ffffff << NVIC_SYSTICK_CALIB_TENMS_SHIFT)
|
||||
#define NVIC_SYSTICK_CALIB_SKEW (1 << 30) /* Bit 30: Calibration value inexact */
|
||||
#define NVIC_SYSTICK_CALIB_NOREF (1 << 31) /* Bit 31: No external reference clock */
|
||||
|
||||
/* Interrupt control state register (INTCTRL) */
|
||||
|
||||
#define NVIC_INTCTRL_NMIPENDSET (1 << 31) /* Bit 31: Set pending NMI bit */
|
||||
#define NVIC_INTCTRL_PENDSVSET (1 << 28) /* Bit 28: Set pending PendSV bit */
|
||||
#define NVIC_INTCTRL_PENDSVCLR (1 << 27) /* Bit 27: Clear pending PendSV bit */
|
||||
#define NVIC_INTCTRL_PENDSTSET (1 << 26) /* Bit 26: Set pending SysTick bit */
|
||||
#define NVIC_INTCTRL_PENDSTCLR (1 << 25) /* Bit 25: Clear pending SysTick bit */
|
||||
#define NVIC_INTCTRL_ISPREEMPOT (1 << 23) /* Bit 23: Pending active next cycle */
|
||||
#define NVIC_INTCTRL_ISRPENDING (1 << 22) /* Bit 22: Interrupt pending flag */
|
||||
#define NVIC_INTCTRL_VECTPENDING_SHIFT 12 /* Bits 21-12: Pending ISR number field */
|
||||
#define NVIC_INTCTRL_VECTPENDING_MASK (0x3ff << NVIC_INTCTRL_VECTPENDING_SHIFT)
|
||||
#define NVIC_INTCTRL_RETTOBASE (1 << 11) /* Bit 11: no other exceptions pending */
|
||||
#define NVIC_INTCTRL_VECTACTIVE_SHIFT 0 /* Bits 8-0: Active ISR number */
|
||||
#define NVIC_INTCTRL_VECTACTIVE_MASK (0x1ff << NVIC_INTCTRL_VECTACTIVE_SHIFT)
|
||||
|
||||
/* System handler 4-7 priority register */
|
||||
|
||||
#define NVIC_SYSH_PRIORITY_DEFAULT 15
|
||||
|
||||
#define NVIC_SYSH_PRIORITY_PR4_SHIFT 0
|
||||
#define NVIC_SYSH_PRIORITY_PR4_MASK (0xff << NVIC_SYSH_PRIORITY_PR4_SHIFT)
|
||||
#define NVIC_SYSH_PRIORITY_PR5_SHIFT 8
|
||||
#define NVIC_SYSH_PRIORITY_PR5_MASK (0xff << NVIC_SYSH_PRIORITY_PR5_SHIFT)
|
||||
#define NVIC_SYSH_PRIORITY_PR6_SHIFT 16
|
||||
#define NVIC_SYSH_PRIORITY_PR6_MASK (0xff << NVIC_SYSH_PRIORITY_PR6_SHIFT)
|
||||
#define NVIC_SYSH_PRIORITY_PR7_SHIFT 24
|
||||
#define NVIC_SYSH_PRIORITY_PR7_MASK (0xff << NVIC_SYSH_PRIORITY_PR7_SHIFT)
|
||||
|
||||
/* System handler 8-11 priority register */
|
||||
|
||||
#define NVIC_SYSH_PRIORITY_PR8_SHIFT 0
|
||||
#define NVIC_SYSH_PRIORITY_PR8_MASK (0xff << NVIC_SYSH_PRIORITY_PR8_SHIFT)
|
||||
#define NVIC_SYSH_PRIORITY_PR9_SHIFT 8
|
||||
#define NVIC_SYSH_PRIORITY_PR9_MASK (0xff << NVIC_SYSH_PRIORITY_PR9_SHIFT)
|
||||
#define NVIC_SYSH_PRIORITY_PR10_SHIFT 16
|
||||
#define NVIC_SYSH_PRIORITY_PR10_MASK (0xff << NVIC_SYSH_PRIORITY_PR10_SHIFT)
|
||||
#define NVIC_SYSH_PRIORITY_PR11_SHIFT 24
|
||||
#define NVIC_SYSH_PRIORITY_PR11_MASK (0xff << NVIC_SYSH_PRIORITY_PR11_SHIFT)
|
||||
|
||||
/* System handler 12-15 priority register */
|
||||
|
||||
#define NVIC_SYSH_PRIORITY_PR12_SHIFT 0
|
||||
#define NVIC_SYSH_PRIORITY_PR12_MASK (0xff << NVIC_SYSH_PRIORITY_PR12_SHIFT)
|
||||
#define NVIC_SYSH_PRIORITY_PR13_SHIFT 8
|
||||
#define NVIC_SYSH_PRIORITY_PR13_MASK (0xff << NVIC_SYSH_PRIORITY_PR13_SHIFT)
|
||||
#define NVIC_SYSH_PRIORITY_PR14_SHIFT 16
|
||||
#define NVIC_SYSH_PRIORITY_PR14_MASK (0xff << NVIC_SYSH_PRIORITY_PR14_SHIFT)
|
||||
#define NVIC_SYSH_PRIORITY_PR15_SHIFT 24
|
||||
#define NVIC_SYSH_PRIORITY_PR15_MASK (0xff << NVIC_SYSH_PRIORITY_PR15_SHIFT)
|
||||
|
||||
|
||||
|
||||
/************************************************************************************
|
||||
* Public Types
|
||||
************************************************************************************/
|
||||
|
||||
/************************************************************************************
|
||||
* Public Data
|
||||
************************************************************************************/
|
||||
|
||||
/************************************************************************************
|
||||
* Public Function Prototypes
|
||||
************************************************************************************/
|
||||
|
||||
#endif /* __ARCH_ARM_SRC_COMMON_CORTEXM3_NVIC_H */
|
||||
@ -46,7 +46,8 @@ CMN_CSRCS = up_allocateheap.c up_assert.c up_blocktask.c up_copystate.c \
|
||||
up_undefinedinsn.c up_usestack.c
|
||||
|
||||
CHIP_ASRCS =
|
||||
CHIP_CSRCS = lm3s_start.c lm3s_syscontrol.c lm3s_irq.c lm3s_lowputc.c lm3s_serial.c
|
||||
CHIP_CSRCS = lm3s_start.c lm3s_syscontrol.c lm3s_irq.c lm3s_timerisr.c \
|
||||
lm3s_lowputc.c lm3s_serial.c
|
||||
|
||||
ifdef CONFIG_NET
|
||||
CHIP_CSRCS += lm3s_ethernet.c
|
||||
|
||||
@ -47,6 +47,7 @@
|
||||
#include "lm3s_syscontrol.h" /* System control module */
|
||||
#include "lm3s_gpio.h" /* GPIO module */
|
||||
#include "lm3s_uart.h" /* UART peripherals */
|
||||
#include "cortexm3_nvic.h" /* Nested, vectored interrupt controller */
|
||||
|
||||
/************************************************************************************
|
||||
* Definitions
|
||||
|
||||
@ -129,7 +129,7 @@
|
||||
************************************************************************************/
|
||||
|
||||
/************************************************************************************
|
||||
* Public Functions
|
||||
* Public Function Prototypes
|
||||
************************************************************************************/
|
||||
|
||||
#endif /* __ARCH_ARM_SRC_LM3S_LM3S_MEMORYMAP_H */
|
||||
|
||||
919
arch/arm/src/lm3s/lm3s_serial.c
Normal file
919
arch/arm/src/lm3s/lm3s_serial.c
Normal file
@ -0,0 +1,919 @@
|
||||
/****************************************************************************
|
||||
* arch/arm/src/lm3s/lm3s_serial.c
|
||||
*
|
||||
* Copyright (C) 2009 Gregory Nutt. All rights reserved.
|
||||
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
*
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in
|
||||
* the documentation and/or other materials provided with the
|
||||
* distribution.
|
||||
* 3. Neither the name NuttX nor the names of its contributors may be
|
||||
* used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
||||
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
||||
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
||||
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
||||
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
* POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Included Files
|
||||
****************************************************************************/
|
||||
|
||||
#include <nuttx/config.h>
|
||||
#include <sys/types.h>
|
||||
#include <unistd.h>
|
||||
#include <semaphore.h>
|
||||
#include <string.h>
|
||||
#include <errno.h>
|
||||
#include <debug.h>
|
||||
#include <nuttx/irq.h>
|
||||
#include <nuttx/arch.h>
|
||||
#include <nuttx/serial.h>
|
||||
#include <arch/serial.h>
|
||||
|
||||
#include "chip.h"
|
||||
#include "up_arch.h"
|
||||
#include "up_internal.h"
|
||||
|
||||
#ifdef CONFIG_USE_SERIALDRIVER
|
||||
|
||||
/****************************************************************************
|
||||
* Definitions
|
||||
****************************************************************************/
|
||||
|
||||
/* Some sanity checks *******************************************************/
|
||||
|
||||
/* Is there a UART enabled? */
|
||||
|
||||
#if defined(CONFIG_UART0_DISABLE) && defined(CONFIG_UART1_DISABLE)
|
||||
# error "No UARTs enabled"
|
||||
#endif
|
||||
|
||||
/* Is there a serial console? */
|
||||
|
||||
#if defined(CONFIG_UART0_SERIAL_CONSOLE) && !defined(CONFIG_UART0_DISABLE)
|
||||
# undef CONFIG_UART1_SERIAL_CONSOLE
|
||||
# define HAVE_CONSOLE 1
|
||||
#elif defined(CONFIG_UART1_SERIAL_CONSOLE) && !defined(CONFIG_UART1_DISABLE)
|
||||
# undef CONFIG_UART0_SERIAL_CONSOLE
|
||||
# define HAVE_CONSOLE 1
|
||||
#else
|
||||
# warning "No valid CONFIG_UARTn_SERIAL_CONSOLE Setting"
|
||||
# undef CONFIG_UART0_SERIAL_CONSOLE
|
||||
# undef CONFIG_UART1_SERIAL_CONSOLE
|
||||
# undef HAVE_CONSOLE
|
||||
#endif
|
||||
|
||||
/* Which UART with be tty0/console and which tty1? */
|
||||
|
||||
#if defined(CONFIG_UART0_SERIAL_CONSOLE)
|
||||
# define CONSOLE_DEV g_uart0port /* UART0 is console */
|
||||
# define TTYS0_DEV g_uart0port /* UART0 is ttyS0 */
|
||||
# ifndef CONFIG_UART1_DISABLE
|
||||
# define TTYS1_DEV g_uart1port /* UART1 is ttyS1 */
|
||||
# elif
|
||||
# undef TTYS1_DEV /* No ttyS1 */
|
||||
# endif
|
||||
#elif defined(CONFIG_UART1_SERIAL_CONSOLE)
|
||||
# define CONSOLE_DEV g_uart1port /* UART1 is console */
|
||||
# define TTYS0_DEV g_uart1port /* UART1 is ttyS0 */
|
||||
# ifndef CONFIG_UART0_DISABLE
|
||||
# define TTYS1_DEV g_uart0port /* UART0 is ttyS1 */
|
||||
# elif
|
||||
# undef TTYS1_DEV /* No ttyS1 */
|
||||
# endif
|
||||
#elif !defined(CONFIG_UART0_DISABLE)
|
||||
# undef CONSOLE_DEV /* No console device */
|
||||
# define TTYS0_DEV g_uart1port /* UART1 is ttyS0 */
|
||||
# ifndef CONFIG_UART1_DISABLE
|
||||
# define TTYS1_DEV g_uart1port /* UART1 is ttyS1 */
|
||||
# elif
|
||||
# undef TTYS1_DEV /* No ttyS1 */
|
||||
# endif
|
||||
#elif !defined(CONFIG_UART1_DISABLE)
|
||||
# undef CONSOLE_DEV /* No console device */
|
||||
# define TTYS0_DEV g_uart1port /* UART1 is ttyS0 */
|
||||
# undef TTYS1_DEV /* No ttyS1 */
|
||||
#else
|
||||
# error "No valid TTY devices"
|
||||
# undef CONSOLE_DEV /* No console device */
|
||||
# undef TTYS0_DEV /* No ttyS0 */
|
||||
# undef TTYS1_DEV /* No ttyS1 */
|
||||
#endif
|
||||
|
||||
/****************************************************************************
|
||||
* Private Types
|
||||
****************************************************************************/
|
||||
|
||||
struct up_dev_s
|
||||
{
|
||||
uint32 uartbase; /* Base address of UART registers */
|
||||
uint32 baud; /* Configured baud */
|
||||
uint32 im; /* Saved IM value */
|
||||
ubyte irq; /* IRQ associated with this UART */
|
||||
ubyte parity; /* 0=none, 1=odd, 2=even */
|
||||
ubyte bits; /* Number of bits (7 or 8) */
|
||||
boolean stopbits2; /* TRUE: Configure with 2 stop bits instead of 1 */
|
||||
};
|
||||
|
||||
/****************************************************************************
|
||||
* Private Function Prototypes
|
||||
****************************************************************************/
|
||||
|
||||
static int up_setup(struct uart_dev_s *dev);
|
||||
static void up_shutdown(struct uart_dev_s *dev);
|
||||
static int up_attach(struct uart_dev_s *dev);
|
||||
static void up_detach(struct uart_dev_s *dev);
|
||||
static int up_interrupt(int irq, void *context);
|
||||
static int up_ioctl(struct file *filep, int cmd, unsigned long arg);
|
||||
static int up_receive(struct uart_dev_s *dev, uint32 *status);
|
||||
static void up_rxint(struct uart_dev_s *dev, boolean enable);
|
||||
static boolean up_rxavailable(struct uart_dev_s *dev);
|
||||
static void up_send(struct uart_dev_s *dev, int ch);
|
||||
static void up_txint(struct uart_dev_s *dev, boolean enable);
|
||||
static boolean up_txready(struct uart_dev_s *dev);
|
||||
static boolean up_txempty(struct uart_dev_s *dev);
|
||||
|
||||
/****************************************************************************
|
||||
* Private Variables
|
||||
****************************************************************************/
|
||||
|
||||
struct uart_ops_s g_uart_ops =
|
||||
{
|
||||
.setup = up_setup,
|
||||
.shutdown = up_shutdown,
|
||||
.attach = up_attach,
|
||||
.detach = up_detach,
|
||||
.ioctl = up_ioctl,
|
||||
.receive = up_receive,
|
||||
.rxint = up_rxint,
|
||||
.rxavailable = up_rxavailable,
|
||||
.send = up_send,
|
||||
.txint = up_txint,
|
||||
.txready = up_txready,
|
||||
.txempty = up_txempty,
|
||||
};
|
||||
|
||||
/* I/O buffers */
|
||||
|
||||
#ifndef CONFIG_UART0_DISABLE
|
||||
static char g_uart0rxbuffer[CONFIG_UART0_RXBUFSIZE];
|
||||
static char g_uart0txbuffer[CONFIG_UART0_TXBUFSIZE];
|
||||
#endif
|
||||
#ifndef CONFIG_UART1_DISABLE
|
||||
static char g_uart1rxbuffer[CONFIG_UART1_RXBUFSIZE];
|
||||
static char g_uart1txbuffer[CONFIG_UART1_TXBUFSIZE];
|
||||
#endif
|
||||
|
||||
/* This describes the state of the LM3S6918 uart0 port. */
|
||||
|
||||
#ifndef CONFIG_UART0_DISABLE
|
||||
static struct up_dev_s g_uart0priv =
|
||||
{
|
||||
.uartbase = LM3S_UART0_BASE,
|
||||
.baud = CONFIG_UART0_BAUD,
|
||||
.irq = LM3S_IRQ_UART0,
|
||||
.parity = CONFIG_UART0_PARITY,
|
||||
.bits = CONFIG_UART0_BITS,
|
||||
.stopbits2 = CONFIG_UART0_2STOP,
|
||||
};
|
||||
|
||||
static uart_dev_t g_uart0port =
|
||||
{
|
||||
.recv =
|
||||
{
|
||||
.size = CONFIG_UART0_RXBUFSIZE,
|
||||
.buffer = g_uart0rxbuffer,
|
||||
},
|
||||
.xmit =
|
||||
{
|
||||
.size = CONFIG_UART0_TXBUFSIZE,
|
||||
.buffer = g_uart0txbuffer,
|
||||
},
|
||||
.ops = &g_uart_ops,
|
||||
.priv = &g_uart0priv,
|
||||
};
|
||||
#endif
|
||||
|
||||
/* This describes the state of the LM3S6918 uart1 port. */
|
||||
|
||||
#ifndef CONFIG_UART1_DISABLE
|
||||
static struct up_dev_s g_uart1priv =
|
||||
{
|
||||
.uartbase = LM3S_UART1_BASE,
|
||||
.baud = CONFIG_UART1_BAUD,
|
||||
.irq = LM3S_IRQ_UART1,
|
||||
.parity = CONFIG_UART1_PARITY,
|
||||
.bits = CONFIG_UART1_BITS,
|
||||
.stopbits2 = CONFIG_UART1_2STOP,
|
||||
};
|
||||
|
||||
static uart_dev_t g_uart1port =
|
||||
{
|
||||
.recv =
|
||||
{
|
||||
.size = CONFIG_UART1_RXBUFSIZE,
|
||||
.buffer = g_uart1rxbuffer,
|
||||
},
|
||||
.xmit =
|
||||
{
|
||||
.size = CONFIG_UART1_TXBUFSIZE,
|
||||
.buffer = g_uart1txbuffer,
|
||||
},
|
||||
.ops = &g_uart_ops,
|
||||
.priv = &g_uart1priv,
|
||||
};
|
||||
#endif
|
||||
|
||||
/****************************************************************************
|
||||
* Private Functions
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Name: up_serialin
|
||||
****************************************************************************/
|
||||
|
||||
static inline uint32 up_serialin(struct up_dev_s *priv, int offset)
|
||||
{
|
||||
return getreg32(priv->uartbase + offset);
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: up_serialout
|
||||
****************************************************************************/
|
||||
|
||||
static inline void up_serialout(struct up_dev_s *priv, int offset, uint32 value)
|
||||
{
|
||||
putreg32(value, priv->uartbase + offset);
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: up_disableuartint
|
||||
****************************************************************************/
|
||||
|
||||
static inline void up_disableuartint(struct up_dev_s *priv, uint32 *im)
|
||||
{
|
||||
/* Return the current interrupt mask value */
|
||||
|
||||
if (im)
|
||||
{
|
||||
*im = priv->im;
|
||||
}
|
||||
|
||||
/* Disable all interrupts */
|
||||
|
||||
priv->im = 0;
|
||||
up_serialout(priv, LM3S_UART_IM_OFFSET, 0);
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: up_restoreuartint
|
||||
****************************************************************************/
|
||||
|
||||
static inline void up_restoreuartint(struct up_dev_s *priv, uint32 im)
|
||||
{
|
||||
priv->im = im;
|
||||
up_serialout(priv, LM3S_UART_IM_OFFSET, im);
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: up_waittxnotfull
|
||||
****************************************************************************/
|
||||
|
||||
#ifdef HAVE_CONSOLE
|
||||
static inline void up_waittxnotfull(struct up_dev_s *priv)
|
||||
{
|
||||
int tmp;
|
||||
|
||||
/* Limit how long we will wait for the TX available condition */
|
||||
|
||||
for (tmp = 1000 ; tmp > 0 ; tmp--)
|
||||
{
|
||||
/* Check Tx FIFO is full */
|
||||
|
||||
if ((up_serialin(priv, LM3S_UART_FR_OFFSET) & UART_FR_TXFF) == 0)
|
||||
{
|
||||
/* The Tx FIFO is not full... return */
|
||||
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
/* If we get here, then the wait has timed out and the Tx FIFO remains
|
||||
* full.
|
||||
*/
|
||||
}
|
||||
#endif
|
||||
|
||||
/****************************************************************************
|
||||
* Name: up_setup
|
||||
*
|
||||
* Description:
|
||||
* Configure the UART baud, bits, parity, fifos, etc. This
|
||||
* method is called the first time that the serial port is
|
||||
* opened.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
static int up_setup(struct uart_dev_s *dev)
|
||||
{
|
||||
struct up_dev_s *priv = (struct up_dev_s*)dev->priv;
|
||||
uint32 lcrh;
|
||||
uint32 ctl;
|
||||
#ifndef CONFIG_SUPPRESS_UART_CONFIG
|
||||
uint32 den;
|
||||
uint32 brdi;
|
||||
uint32 remainder;
|
||||
uint32 divfrac;
|
||||
|
||||
/* Note: The logic here depends on the fact that that the UART module
|
||||
* was enabled and the GPIOs were configured in up_lowsetup().
|
||||
*/
|
||||
|
||||
/* Disable the UART by clearing the UARTEN bit in the UART CTL register */
|
||||
|
||||
ctl = getreg32(LM3S_CONSOLE_BASE+LM3S_UART_CTL_OFFSET);
|
||||
ctl &= ~UART_CTL_UARTEN;
|
||||
putreg32(ctl, LM3S_CONSOLE_BASE+LM3S_UART_CTL_OFFSET);
|
||||
|
||||
/* Calculate BAUD rate from the SYS clock:
|
||||
*
|
||||
* "The baud-rate divisor is a 22-bit number consisting of a 16-bit integer
|
||||
* and a 6-bit fractional part. The number formed by these two values is
|
||||
* used by the baud-rate generator to determine the bit period. Having a
|
||||
* fractional baud-rate divider allows the UART to generate all the standard
|
||||
* baud rates.
|
||||
*
|
||||
* "The 16-bit integer is loaded through the UART Integer Baud-Rate Divisor
|
||||
* (UARTIBRD) register ... and the 6-bit fractional part is loaded with the
|
||||
* UART Fractional Baud-Rate Divisor (UARTFBRD) register... The baud-rate
|
||||
* divisor (BRD) has the following relationship to the system clock (where
|
||||
* BRDI is the integer part of the BRD and BRDF is the fractional part,
|
||||
* separated by a decimal place.):
|
||||
*
|
||||
* "BRD = BRDI + BRDF = UARTSysClk / (16 * Baud Rate)
|
||||
*
|
||||
* "where UARTSysClk is the system clock connected to the UART. The 6-bit
|
||||
* fractional number (that is to be loaded into the DIVFRAC bit field in the
|
||||
* UARTFBRD register) can be calculated by taking the fractional part of the
|
||||
* baud-rate divisor, multiplying it by 64, and adding 0.5 to account for
|
||||
* rounding errors:
|
||||
*
|
||||
* "UARTFBRD[DIVFRAC] = integer(BRDF * 64 + 0.5)
|
||||
*
|
||||
* "The UART generates an internal baud-rate reference clock at 16x the baud-
|
||||
* rate (referred to as Baud16). This reference clock is divided by 16 to
|
||||
* generate the transmit clock, and is used for error detection during receive
|
||||
* operations.
|
||||
*
|
||||
* "Along with the UART Line Control, High Byte (UARTLCRH) register ..., the
|
||||
* UARTIBRD and UARTFBRD registers form an internal 30-bit register. This
|
||||
* internal register is only updated when a write operation to UARTLCRH is
|
||||
* performed, so any changes to the baud-rate divisor must be followed by a
|
||||
* write to the UARTLCRH register for the changes to take effect. ..."
|
||||
*/
|
||||
|
||||
den = priv->baud << 16;
|
||||
brdi = SYSCLK_FREQUENCY / den;
|
||||
remainder = priv->baud - den * brdi
|
||||
divfrac = ((remainder << 6) + (den >> 1)) / den;
|
||||
|
||||
up_serialout(priv, LM3S_UART_IBRD_OFFSET, brdi);
|
||||
up_serialout(priv, LM3S_UART_FBRD_OFFSET, divfrac);
|
||||
|
||||
/* Set up the LCRH register */
|
||||
|
||||
lcrh = 0;
|
||||
switch (priv->bits)
|
||||
{
|
||||
case 5:
|
||||
lcrh |= UART_LCRH_WLEN_5BITS;
|
||||
break;
|
||||
case 6:
|
||||
lcrh |= UART_LCRH_WLEN_6BITS;
|
||||
break;
|
||||
case 7:
|
||||
lcrh |= UART_LCRH_WLEN_7BITS;
|
||||
break;
|
||||
case 8:
|
||||
default:
|
||||
lcrh |= UART_LCRH_WLEN_8BITS;
|
||||
break;
|
||||
}
|
||||
|
||||
switch (priv->parity)
|
||||
{
|
||||
case 0:
|
||||
default:
|
||||
break;
|
||||
case 1:
|
||||
lcrh |= UART_LCRH_PEN;
|
||||
break;
|
||||
case 2:
|
||||
lcrh |= UART_LCRH_PEN|UART_LCRH_EPS;
|
||||
break;
|
||||
}
|
||||
|
||||
if (priv->stopbits2)
|
||||
{
|
||||
lcrh |= UART_LCRH_STP2;
|
||||
}
|
||||
|
||||
up_serialout(priv, LM3S_UART_LCRH_OFFSET, lcrh);
|
||||
#endif
|
||||
|
||||
/* Set the UART to interrupt whenever the TX FIFO is almost empty or when
|
||||
* any character is received.
|
||||
*/
|
||||
|
||||
up_serialout(priv, LM3S_UART_IFLS_OFFSET, UART_IFLS_TXIFLSEL_18th|UART_IFLS_RXIFLSEL_18th);
|
||||
|
||||
/* Flush the Rx and Tx FIFOs -- How do you do that?*/
|
||||
|
||||
/* Enable Rx interrupts from the UART except for Tx interrupts. We don't want
|
||||
* Tx interrupts until we have something to send. We will check for serial
|
||||
* errors as part of Rx interrupt processing (no interrupts will be received
|
||||
* yet because the interrupt is still disabled at the interrupt controller.
|
||||
*/
|
||||
|
||||
serial_out(priv, LM3S_UART_IM_OFFSET, UART_IM_RXIM|UART_IM_RTIM);
|
||||
|
||||
/* Enable the FIFOs */
|
||||
|
||||
#ifndef CONFIG_SUPPRESS_UART_CONFIG
|
||||
lrch = up_serialin(priv, LM3S_UART_LCRH_OFFSET);
|
||||
#endif
|
||||
lcrh |= UART_LCRH_FEN;
|
||||
serial_out(priv, LM3S_UART_LCRH_OFFSET, lcrh);
|
||||
|
||||
/* Enable Rx, Tx, and the UART */
|
||||
|
||||
#ifndef CONFIG_SUPPRESS_UART_CONFIG
|
||||
ctl = up_serialin(priv, LM3S_UART_CTL_OFFSET);
|
||||
#endif
|
||||
ctl |= (UART_CTL_UARTEN|UART_CTL_TXE|UART_CTL_RXE);
|
||||
up_serialout(priv, LM3S_UART_CTL_OFFSET, ctl);
|
||||
|
||||
/* Set up the cache IM value */
|
||||
|
||||
priv->im = up_serialin(priv, LM3S_UART_IM_OFFSET);
|
||||
return OK;
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: up_shutdown
|
||||
*
|
||||
* Description:
|
||||
* Disable the UART. This method is called when the serial
|
||||
* port is closed
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
static void up_shutdown(struct uart_dev_s *dev)
|
||||
{
|
||||
struct up_dev_s *priv = (struct up_dev_s*)dev->priv;
|
||||
up_disableuartint(priv, NULL);
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: up_attach
|
||||
*
|
||||
* Description:
|
||||
* Configure the UART to operation in interrupt driven mode. This method is
|
||||
* called when the serial port is opened. Normally, this is just after the
|
||||
* the setup() method is called, however, the serial console may operate in
|
||||
* a non-interrupt driven mode during the boot phase.
|
||||
*
|
||||
* RX and TX interrupts are not enabled when by the attach method (unless the
|
||||
* hardware supports multiple levels of interrupt enabling). The RX and TX
|
||||
* interrupts are not enabled until the txint() and rxint() methods are called.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
static int up_attach(struct uart_dev_s *dev)
|
||||
{
|
||||
struct up_dev_s *priv = (struct up_dev_s*)dev->priv;
|
||||
int ret;
|
||||
|
||||
/* Attach and enable the IRQ */
|
||||
|
||||
ret = irq_attach(priv->irq, up_interrupt);
|
||||
if (ret == OK)
|
||||
{
|
||||
/* Enable the interrupt (RX and TX interrupts are still disabled
|
||||
* in the UART
|
||||
*/
|
||||
|
||||
up_enable_irq(priv->irq);
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: up_detach
|
||||
*
|
||||
* Description:
|
||||
* Detach UART interrupts. This method is called when the serial port is
|
||||
* closed normally just before the shutdown method is called. The exception is
|
||||
* the serial console which is never shutdown.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
static void up_detach(struct uart_dev_s *dev)
|
||||
{
|
||||
struct up_dev_s *priv = (struct up_dev_s*)dev->priv;
|
||||
up_disable_irq(priv->irq);
|
||||
irq_detach(priv->irq);
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: up_interrupt
|
||||
*
|
||||
* Description:
|
||||
* This is the UART interrupt handler. It will be invoked
|
||||
* when an interrupt received on the 'irq' It should call
|
||||
* uart_transmitchars or uart_receivechar to perform the
|
||||
* appropriate data transfers. The interrupt handling logic\
|
||||
* must be able to map the 'irq' number into the approprite
|
||||
* uart_dev_s structure in order to call these functions.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
static int up_interrupt(int irq, void *context)
|
||||
{
|
||||
struct uart_dev_s *dev = NULL;
|
||||
struct up_dev_s *priv;
|
||||
uint32 mis;
|
||||
int passes;
|
||||
boolean handled;
|
||||
|
||||
#ifndef CONFIG_UART0_DISABLE
|
||||
if (g_uart0priv.irq == irq)
|
||||
{
|
||||
dev = &g_uart0port;
|
||||
}
|
||||
else
|
||||
#endif
|
||||
#ifndef CONFIG_UART1_DISABLE
|
||||
if (g_uart1priv.irq == irq)
|
||||
{
|
||||
dev = &g_uart1port;
|
||||
}
|
||||
else
|
||||
#endif
|
||||
{
|
||||
PANIC(OSERR_INTERNAL);
|
||||
}
|
||||
priv = (struct up_dev_s*)dev->priv;
|
||||
|
||||
/* Loop until there are no characters to be transferred or,
|
||||
* until we have been looping for a long time.
|
||||
*/
|
||||
|
||||
for (passes = 0; passes < 256 && handled; passes++)
|
||||
{
|
||||
handled = FALSE;
|
||||
|
||||
/* Get the masked UART status and clear the pending interrupts. */
|
||||
|
||||
mis = up_serialin(priv, LM3S_UART_MIS_OFFSET);
|
||||
up_serialout(priv, LM3S_UART_ICR_OFFSET, mis);
|
||||
|
||||
/* Handle incoming, receive bytes (with or without timeout) */
|
||||
|
||||
if ((mis & (UART_MIS_RXMIS|UART_MIS_RTMIS)) != 0)
|
||||
{
|
||||
/* Rx buffer not empty ... process incoming bytes */
|
||||
|
||||
uart_recvchars(dev);
|
||||
handled = TRUE;
|
||||
}
|
||||
|
||||
/* Handle outgoing, transmit bytes */
|
||||
|
||||
if ((mis & UART_MIS_TXMIS) == 0)
|
||||
{
|
||||
/* Tx FIFO not full ... process outgoing bytes */
|
||||
|
||||
uart_xmitchars(dev);
|
||||
handled = TRUE;
|
||||
}
|
||||
}
|
||||
return OK;
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: up_ioctl
|
||||
*
|
||||
* Description:
|
||||
* All ioctl calls will be routed through this method
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
static int up_ioctl(struct file *filep, int cmd, unsigned long arg)
|
||||
{
|
||||
struct inode *inode = filep->f_inode;
|
||||
struct uart_dev_s *dev = inode->i_private;
|
||||
struct up_dev_s *priv = (struct up_dev_s*)dev->priv;
|
||||
int ret = OK;
|
||||
|
||||
switch (cmd)
|
||||
{
|
||||
case TIOCSERGSTRUCT:
|
||||
{
|
||||
struct up_dev_s *user = (struct up_dev_s*)arg;
|
||||
if (!user)
|
||||
{
|
||||
*get_errno_ptr() = EINVAL;
|
||||
ret = ERROR;
|
||||
}
|
||||
else
|
||||
{
|
||||
memcpy(user, dev, sizeof(struct up_dev_s));
|
||||
}
|
||||
}
|
||||
break;
|
||||
|
||||
default:
|
||||
*get_errno_ptr() = ENOTTY;
|
||||
ret = ERROR;
|
||||
break;
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: up_receive
|
||||
*
|
||||
* Description:
|
||||
* Called (usually) from the interrupt level to receive one
|
||||
* character from the UART. Error bits associated with the
|
||||
* receipt are provided in the the return 'status'.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
static int up_receive(struct uart_dev_s *dev, uint32 *status)
|
||||
{
|
||||
struct up_dev_s *priv = (struct up_dev_s*)dev->priv;
|
||||
uint32 rxd;
|
||||
|
||||
/* Get the Rx byte + 4 bits of error information. Return those in status */
|
||||
|
||||
rxd = up_serialin(priv, LM3S_UART_DR_OFFSET);
|
||||
*status = rxd;
|
||||
|
||||
/* The lower 8bits of the Rx data is the actual recevied byte */
|
||||
|
||||
return rxd & 0xff;
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: up_rxint
|
||||
*
|
||||
* Description:
|
||||
* Call to enable or disable RX interrupts
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
static void up_rxint(struct uart_dev_s *dev, boolean enable)
|
||||
{
|
||||
struct up_dev_s *priv = (struct up_dev_s*)dev->priv;
|
||||
if (enable)
|
||||
{
|
||||
/* Receive an interrupt when their is anything in the Rx FIFO (or an Rx
|
||||
* timeout occurs.
|
||||
*/
|
||||
|
||||
#ifndef CONFIG_SUPPRESS_SERIAL_INTS
|
||||
priv->im |= (UART_IM_RXIM|UART_IM_RTIM);
|
||||
#endif
|
||||
}
|
||||
else
|
||||
{
|
||||
priv->im &= ~(UART_IM_RXIM|UART_IM_RTIM);
|
||||
}
|
||||
up_serialout(priv, LM3S_UART_IM_OFFSET, priv->im);
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: up_rxavailable
|
||||
*
|
||||
* Description:
|
||||
* Return TRUE if the receive fifo is not empty
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
static boolean up_rxavailable(struct uart_dev_s *dev)
|
||||
{
|
||||
struct up_dev_s *priv = (struct up_dev_s*)dev->priv;
|
||||
return ((up_serialin(priv, LM3S_UART_FR_OFFSET) & UART_FR_RXFE) == 0);
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: up_send
|
||||
*
|
||||
* Description:
|
||||
* This method will send one byte on the UART
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
static void up_send(struct uart_dev_s *dev, int ch)
|
||||
{
|
||||
struct up_dev_s *priv = (struct up_dev_s*)dev->priv;
|
||||
up_serialout(priv, LM3S_UART_DR_OFFSET, (uint32)ch);
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: up_txint
|
||||
*
|
||||
* Description:
|
||||
* Call to enable or disable TX interrupts
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
static void up_txint(struct uart_dev_s *dev, boolean enable)
|
||||
{
|
||||
struct up_dev_s *priv = (struct up_dev_s*)dev->priv;
|
||||
if (enable)
|
||||
{
|
||||
/* Set to receive an interrupt when the TX fifo is half emptied */
|
||||
#ifndef CONFIG_SUPPRESS_SERIAL_INTS
|
||||
priv->im |= UART_IM_TXIM;
|
||||
#endif
|
||||
}
|
||||
else
|
||||
{
|
||||
priv->im &= ~UART_IM_TXIM;
|
||||
}
|
||||
up_serialout(priv, LM3S_UART_IM_OFFSET, priv->im);
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: up_txready
|
||||
*
|
||||
* Description:
|
||||
* Return TRUE if the tranmsit fifo is not full
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
static boolean up_txready(struct uart_dev_s *dev)
|
||||
{
|
||||
struct up_dev_s *priv = (struct up_dev_s*)dev->priv;
|
||||
return ((up_serialin(priv, LM3S_UART_FR_OFFSET) & UART_FR_TXFF) == 0);
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: up_txempty
|
||||
*
|
||||
* Description:
|
||||
* Return TRUE if the transmit fifo is empty
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
static boolean up_txempty(struct uart_dev_s *dev)
|
||||
{
|
||||
struct up_dev_s *priv = (struct up_dev_s*)dev->priv;
|
||||
return ((up_serialin(priv, LM3S_UART_FR_OFFSET) & UART_FR_TXFE) != 0);
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Public Funtions
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Name: up_serialinit
|
||||
*
|
||||
* Description:
|
||||
* Performs the low level UART initialization early in
|
||||
* debug so that the serial console will be available
|
||||
* during bootup. This must be called before up_serialinit.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
void up_earlyserialinit(void)
|
||||
{
|
||||
/* NOTE: All GPIO configuration for the UARTs was performed in
|
||||
* up_lowsetup
|
||||
*/
|
||||
|
||||
/* Disable all UARTS */
|
||||
|
||||
up_disableuartint(TTYS0_DEV.priv, NULL);
|
||||
#ifdef TTYS1_DEV
|
||||
up_disableuartint(TTYS1_DEV.priv, NULL);
|
||||
#endif
|
||||
|
||||
/* Configuration whichever one is the console */
|
||||
|
||||
#ifdef HAVE_CONSOLE
|
||||
CONSOLE_DEV.isconsole = TRUE;
|
||||
up_setup(&CONSOLE_DEV);
|
||||
#endif
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: up_serialinit
|
||||
*
|
||||
* Description:
|
||||
* Register serial console and serial ports. This assumes
|
||||
* that up_earlyserialinit was called previously.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
void up_serialinit(void)
|
||||
{
|
||||
/* Register the console */
|
||||
|
||||
#ifdef HAVE_CONSOLE
|
||||
(void)uart_register("/dev/console", &CONSOLE_DEV);
|
||||
#endif
|
||||
|
||||
/* Register all UARTs */
|
||||
|
||||
(void)uart_register("/dev/ttyS0", &TTYS0_DEV);
|
||||
#ifdef TTYS1_DEV
|
||||
(void)uart_register("/dev/ttyS1", &TTYS1_DEV);
|
||||
#endif
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: up_putc
|
||||
*
|
||||
* Description:
|
||||
* Provide priority, low-level access to support OS debug writes
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
int up_putc(int ch)
|
||||
{
|
||||
#ifdef HAVE_CONSOLE
|
||||
struct up_dev_s *priv = (struct up_dev_s*)CONSOLE_DEV.priv;
|
||||
ubyte im;
|
||||
|
||||
up_disableuartint(priv, &im);
|
||||
up_waittxnotfull(priv);
|
||||
up_serialout(priv, LM3S_UART_DR_OFFSET, (uint32)ch);
|
||||
|
||||
/* Check for LF */
|
||||
|
||||
if (ch == '\n')
|
||||
{
|
||||
/* Add CR */
|
||||
|
||||
up_waittxnotfull(priv);
|
||||
up_serialout(priv, LM3S_UART_DR_OFFSET, (uint32)'\r');
|
||||
}
|
||||
|
||||
up_waittxnotfull(priv);
|
||||
up_restoreuartint(priv, im);
|
||||
#endif
|
||||
return ch;
|
||||
}
|
||||
|
||||
#else /* CONFIG_USE_SERIALDRIVER */
|
||||
|
||||
/****************************************************************************
|
||||
* Name: up_putc
|
||||
*
|
||||
* Description:
|
||||
* Provide priority, low-level access to support OS debug writes
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
int up_putc(int ch)
|
||||
{
|
||||
#ifdef HAVE_CONSOLE
|
||||
/* Check for LF */
|
||||
|
||||
if (ch == '\n')
|
||||
{
|
||||
/* Add CR */
|
||||
|
||||
up_lowputc('\r');
|
||||
}
|
||||
|
||||
up_lowputc(ch);
|
||||
#endif
|
||||
return ch;
|
||||
}
|
||||
|
||||
#endif /* CONFIG_USE_SERIALDRIVER */
|
||||
140
arch/arm/src/lm3s/lm3s_timerisr.c
Normal file
140
arch/arm/src/lm3s/lm3s_timerisr.c
Normal file
@ -0,0 +1,140 @@
|
||||
/****************************************************************************
|
||||
* arch/arm/src/lm3s/lm3s_timerisr.c
|
||||
*
|
||||
* Copyright (C) 2009 Gregory Nutt. All rights reserved.
|
||||
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
*
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in
|
||||
* the documentation and/or other materials provided with the
|
||||
* distribution.
|
||||
* 3. Neither the name NuttX nor the names of its contributors may be
|
||||
* used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
||||
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
||||
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
||||
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
||||
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
* POSSIBILITY OF SUCH DAMAGE.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Included Files
|
||||
****************************************************************************/
|
||||
|
||||
#include <nuttx/config.h>
|
||||
#include <sys/types.h>
|
||||
#include <time.h>
|
||||
#include <debug.h>
|
||||
#include <nuttx/arch.h>
|
||||
#include <arch/board/board.h>
|
||||
|
||||
#include "clock_internal.h"
|
||||
#include "up_internal.h"
|
||||
#include "up_arch.h"
|
||||
|
||||
#include "chip.h"
|
||||
|
||||
/****************************************************************************
|
||||
* Definitions
|
||||
****************************************************************************/
|
||||
|
||||
/* The desired timer interrupt frequency is provided by the definition
|
||||
* CLK_TCK (see include/time.h). CLK_TCK defines the desired number of
|
||||
* system clock ticks per second. That value is a user configurable setting
|
||||
* that defaults to 100 (100 ticks per second = 10 MS interval).
|
||||
*
|
||||
* The timer counts at the rate SYSCLK_FREQUENCY as defined in the board.h
|
||||
* header file.
|
||||
*/
|
||||
|
||||
#define SYSTICK_RELOAD ((SYSCLK_FREQUENCY / CLK_TCK) - 1)
|
||||
|
||||
/* The size of the reload field is 24 bits. Verify taht the reload value
|
||||
* will fit in the reload register.
|
||||
*/
|
||||
|
||||
#if SYSTICK_RELOAD > 0x00ffffff
|
||||
# error SYSTICK_RELOAD exceeds the range of the RELOAD register
|
||||
#endif
|
||||
|
||||
/****************************************************************************
|
||||
* Private Types
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Private Function Prototypes
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Global Functions
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Function: up_timerisr
|
||||
*
|
||||
* Description:
|
||||
* The timer ISR will perform a variety of services for various portions
|
||||
* of the systems.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
int up_timerisr(int irq, uint32 *regs)
|
||||
{
|
||||
/* Process timer interrupt */
|
||||
|
||||
sched_process_timer();
|
||||
return 0;
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Function: up_timerinit
|
||||
*
|
||||
* Description:
|
||||
* This function is called during start-up to initialize
|
||||
* the timer interrupt.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
void up_timerinit(void)
|
||||
{
|
||||
uint32 regval;
|
||||
|
||||
/* Set the SysTick interrupt to the default priority */
|
||||
|
||||
regval = getreg32(NVIC_SYSH12_15_PRIORITY);
|
||||
regval &= ~NVIC_SYSH_PRIORITY_PR15_MASK;
|
||||
regval |= (NVIC_SYSH_PRIORITY_DEFAULT << NVIC_SYSH_PRIORITY_PR15_SHIFT);
|
||||
putreg32(regval, NVIC_SYSH12_15_PRIORITY);
|
||||
|
||||
/* Configure SysTick to interrupt at the requested rate */
|
||||
|
||||
putreg32(SYSTICK_RELOAD, NVIC_SYSTICK_RELOAD);
|
||||
|
||||
/* Attach the timer interrupt vector */
|
||||
|
||||
(void)irq_attach(LMSB_IRQ_SYSTICK, (xcpt_t)up_timerisr);
|
||||
|
||||
/* Enable SysTick interrupts */
|
||||
|
||||
putreg32((NVIC_SYSTICK_CTRL_CLKSOURCE|NVIC_SYSTICK_CTRL_TICKINT|NVIC_SYSTICK_CTRL_ENABLE), NVIC_SYSTICK_CTRL);
|
||||
|
||||
/* And enable the timer interrupt */
|
||||
|
||||
up_enable_irq(LMSB_IRQ_SYSTICK);
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user