0ee8241606
Run all .c and .h files in last PR through tools/nxstyle and fix all complaints.
Author: macman88 <jjlange91@gmail.com>
LPC17xx serial updates (#29)
* Save CONFIG_ARCH_BOARD_CUSTOM when running 'make savedefconfig'
* Don't compile up_earlyserialinit if USE_EARLYSERIALINIT is not defined
* Added support for RS485 direction control on LPC17xx UART1
* First pass at fractional baud rate divider on LPC17xx/40xx
* Added support for fractional divider to console UART
136 lines
5.3 KiB
C
136 lines
5.3 KiB
C
/************************************************************************************
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* arch/arm/src/lpc17xx_40xx/lpc17_40_serial.h
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*
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* Copyright (C) 2010, 2013, 2019 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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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_LPC17XX_40XX_LPC17_40_SERIAL_H
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#define __ARCH_ARM_SRC_LPC17XX_40XX_LPC17_40_SERIAL_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 <arch/board/board.h>
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#include "hardware/lpc17_40_uart.h"
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#include "hardware/lpc17_40_syscon.h"
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#include "lpc17_40_gpio.h"
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/************************************************************************************
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* Pre-processor Definitions
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************************************************************************************/
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/* Configuration *********************************************************************/
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/* Are any UARTs enabled? */
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#undef HAVE_UART
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#if defined(CONFIG_LPC17_40_UART0) || defined(CONFIG_LPC17_40_UART1) || \
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defined(CONFIG_LPC17_40_UART2) || defined(CONFIG_LPC17_40_UART3)
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# define HAVE_UART 1
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#endif
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/* Is there a serial console? There should be at most one defined. It could be on
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* any UARTn, n=0,1,2,3
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*/
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#if defined(CONFIG_UART0_SERIAL_CONSOLE) && defined(CONFIG_LPC17_40_UART0)
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# undef CONFIG_UART1_SERIAL_CONSOLE
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# undef CONFIG_UART2_SERIAL_CONSOLE
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# undef CONFIG_UART3_SERIAL_CONSOLE
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# define HAVE_CONSOLE 1
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#elif defined(CONFIG_UART1_SERIAL_CONSOLE) && defined(CONFIG_LPC17_40_UART1)
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# undef CONFIG_UART0_SERIAL_CONSOLE
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# undef CONFIG_UART2_SERIAL_CONSOLE
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# undef CONFIG_UART3_SERIAL_CONSOLE
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# define HAVE_CONSOLE 1
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#elif defined(CONFIG_UART2_SERIAL_CONSOLE) && defined(CONFIG_LPC17_40_UART2)
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# undef CONFIG_UART0_SERIAL_CONSOLE
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# undef CONFIG_UART1_SERIAL_CONSOLE
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# undef CONFIG_UART3_SERIAL_CONSOLE
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# define HAVE_CONSOLE 1
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#elif defined(CONFIG_UART3_SERIAL_CONSOLE) && defined(CONFIG_LPC17_40_UART3)
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# undef CONFIG_UART0_SERIAL_CONSOLE
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# undef CONFIG_UART1_SERIAL_CONSOLE
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# undef CONFIG_UART2_SERIAL_CONSOLE
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# define HAVE_CONSOLE 1
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#else
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# undef CONFIG_UART0_SERIAL_CONSOLE
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# undef CONFIG_UART1_SERIAL_CONSOLE
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# undef CONFIG_UART2_SERIAL_CONSOLE
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# undef CONFIG_UART3_SERIAL_CONSOLE
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# undef HAVE_CONSOLE
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#endif
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/* Check UART flow control (Only supported by UART1) */
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# undef CONFIG_UART0_IFLOWCONTROL
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# undef CONFIG_UART0_OFLOWCONTROL
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# undef CONFIG_UART2_IFLOWCONTROL
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# undef CONFIG_UART2_OFLOWCONTROL
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# undef CONFIG_UART3_IFLOWCONTROL
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# undef CONFIG_UART3_OFLOWCONTROL
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#ifndef CONFIG_LPC17_40_UART1
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# undef CONFIG_UART1_IFLOWCONTROL
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# undef CONFIG_UART1_OFLOWCONTROL
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#endif
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/* We cannot allow the DLM/DLL divisor to become to small or will will lose too
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* much accuracy. This following is a "fudge factor" that represents the minimum
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* value of the divisor that we will permit.
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*/
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#define UART_MINDL 32
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/************************************************************************************
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* Public Types
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************************************************************************************/
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/************************************************************************************
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* Public Data
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************************************************************************************/
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/************************************************************************************
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* Inline Functions
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************************************************************************************/
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/************************************************************************************
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* Public Functions
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************************************************************************************/
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void up_setbaud(uintptr_t uartbase, uint32_t basefreq, uint32_t baud);
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#endif /* __ARCH_ARM_SRC_LPC17XX_40XX_LPC17_40_SERIAL_H */
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