622a21291c
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@2515 42af7a65-404d-4744-a932-0658087f49c3
159 lines
6.2 KiB
C
Executable File
159 lines
6.2 KiB
C
Executable File
/************************************************************************************
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* configs/sam3u-ek/include/board.h
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* include/arch/board/board.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_BOARD_BOARD_H
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#define __ARCH_BOARD_BOARD_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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#ifndef __ASSEMBLY__
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# include <stdint.h>
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#endif
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#include "sam3u_internal.h"
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/************************************************************************************
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* Definitions
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************************************************************************************/
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/* Clocking *************************************************************************/
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/* After power-on reset, the sam3u device is running on a 4MHz internal RC. These
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* definitions will configure clocking with MCK = 48MHz, PLLA = 96, and CPU=48MHz.
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*/
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/* Main oscillator register settings */
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#define BOARD_CKGR_MOR_MOSCXTST (63 << CKGR_MOR_MOSCXTST_SHIFT) /* Start-up Time */
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/* PLLA configuration */
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#define BOARD_CKGR_PLLAR_MULA (7 << CKGR_PLLAR_MULA_SHIFT)
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#define BOARD_CKGR_PLLAR_STMODE CKGR_PLLAR_STMODE_FAST
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#define BOARD_CKGR_PLLAR_PLLACOUNT (63 << CKGR_PLLAR_PLLACOUNT_SHIFT)
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#define BOARD_CKGR_PLLAR_DIVA CKGR_PLLAR_DIVA_BYPASS
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/* PMC master clock register settings */
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#define BOARD_PMC_MCKR_CSS PMC_MCKR_CSS_PLLA
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#define BOARD_PMC_MCKR_PRES PMC_MCKR_PRES_DIV2
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/* USB UTMI PLL start-up time */
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#define BOARD_CKGR_UCKR_UPLLCOUNT (3 << CKGR_UCKR_UPLLCOUNT_SHIFT)
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/* Resulting frequencies */
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#define SAM3U_MAINOSC_FREQUENCY (12000000)
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#define SAM3U_MCK_FREQUENCY (48000000)
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#define SAM3U_PLLA_FREQUENCY (96000000)
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#define SAM3U_CPU_FREQUENCY (48000000)
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/* LED definitions ******************************************************************/
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#define LED_STARTED 0
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#define LED_HEAPALLOCATE 1
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#define LED_IRQSENABLED 2
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#define LED_STACKCREATED 3
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#define LED_INIRQ 4
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#define LED_SIGNAL 5
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#define LED_ASSERTION 6
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#define LED_PANIC 7
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/* GPIO pin definitions *************************************************************/
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#define GPIO_LED0 (GPIO_OUTPUT|GPIO_CFG_DEFAULT|GPIO_PORT_PIOB|GPIO_OUTPUT_CLEAR|GPIO_PIN0)
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#define GPIO_LED1 (GPIO_OUTPUT|GPIO_CFG_DEFAULT|GPIO_PORT_PIOB|GPIO_OUTPUT_SET|GPIO_PIN1)
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#define GPIO_LED2 (GPIO_OUTPUT|GPIO_CFG_DEFAULT|GPIO_PORT_PIOB|GPIO_OUTPUT_SET|GPIO_PIN2)
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#define GPIO_BUTTON1 (GPIO_INPUT|GPIO_CFG_PULLUP|GPIO_CFG_DEGLITCH|GPIO_PORT_PIOA|GPIO_PIN18)
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#define GPIO_BUTTON2 (GPIO_INPUT|GPIO_CFG_PULLUP|GPIO_CFG_DEGLITCH|GPIO_PORT_PIOA|GPIO_PIN19)
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/************************************************************************************
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* Public Data
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************************************************************************************/
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#ifndef __ASSEMBLY__
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#undef EXTERN
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#if defined(__cplusplus)
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#define EXTERN extern "C"
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extern "C" {
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#else
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#define EXTERN extern
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#endif
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/************************************************************************************
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* Public Function Prototypes
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************************************************************************************/
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/************************************************************************************
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* Name: sam3u_boardinitialize
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*
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* Description:
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* All SAM3U architectures must provide the following entry point. This entry point
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* is called early in the intitialization -- after all memory has been configured
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* and mapped but before any devices have been initialized.
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*
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************************************************************************************/
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EXTERN void sam3u_boardinitialize(void);
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/************************************************************************************
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* Button support.
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*
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* Description:
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* up_buttoninit() must be called to initialize button resources. After that,
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* up_buttons() may be called to collect the state of all buttons. up_buttons()
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* returns an 8-bit bit set with each bit associated with a button. See the
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* BUTTON_* and JOYSTICK_* definitions above for the meaning of each bit.
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*
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************************************************************************************/
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#ifdef CONFIG_ARCH_BUTTONS
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EXTERN void up_buttoninit(void);
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EXTERN uint8_t up_buttons(void);
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#endif
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#undef EXTERN
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#if defined(__cplusplus)
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}
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#endif
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#endif /* __ASSEMBLY__ */
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#endif /* __ARCH_BOARD_BOARD_H */
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