131 lines
3.6 KiB
C
131 lines
3.6 KiB
C
/**
|
|
* \file
|
|
* <!--
|
|
* This file is part of BeRTOS.
|
|
*
|
|
* Bertos is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*
|
|
* As a special exception, you may use this file as part of a free software
|
|
* library without restriction. Specifically, if other files instantiate
|
|
* templates or use macros or inline functions from this file, or you compile
|
|
* this file and link it with other files to produce an executable, this
|
|
* file does not by itself cause the resulting executable to be covered by
|
|
* the GNU General Public License. This exception does not however
|
|
* invalidate any other reasons why the executable file might be covered by
|
|
* the GNU General Public License.
|
|
*
|
|
* Copyright 2010 Develer S.r.l. (http://www.develer.com/)
|
|
*
|
|
* -->
|
|
*
|
|
* \brief STM32F10xx UART interface driver.
|
|
*
|
|
* \author Daniele Basile <asterix@develer.com>
|
|
*/
|
|
|
|
#ifndef SER_STM32_H
|
|
#define SER_STM32_H
|
|
|
|
#include <cfg/debug.h>
|
|
|
|
#include <cpu/power.h> /* cpu_relax() */
|
|
|
|
#include <io/stm32.h>
|
|
|
|
/* Serial hardware numbers */
|
|
enum
|
|
{
|
|
SER_UART1 = 0,
|
|
SER_UART2,
|
|
#if CPU_CM3_STM32F103RB || CPU_CM3_STM32F103RE
|
|
SER_UART3,
|
|
#endif
|
|
SER_CNT //< Number of serial ports
|
|
};
|
|
|
|
/* Software errors */
|
|
#define SERRF_RXFIFOOVERRUN BV(6) //< Rx FIFO buffer overrun
|
|
#define SERRF_RXTIMEOUT BV(5) //< Receive timeout
|
|
#define SERRF_TXTIMEOUT BV(4) //< Transmit timeout
|
|
|
|
/*
|
|
* Hardware errors.
|
|
*/
|
|
#define SERRF_RXSROVERRUN SR_ORE //< Input overrun
|
|
#define SERRF_FRAMEERROR SR_FE //< Stop bit missing
|
|
#define SERRF_PARITYERROR SR_PE //< Parity error
|
|
#define SERRF_NOISEERROR SR_NE //< Noise error
|
|
|
|
/* Serial error/status flags */
|
|
typedef uint32_t serstatus_t;
|
|
|
|
INLINE void stm32_uartDisable(uint32_t base)
|
|
{
|
|
struct stm32_usart *_base = (struct stm32_usart *)base;
|
|
_base->CR1 &= ~CR1_RUN_RESET;
|
|
}
|
|
|
|
INLINE void stm32_uartEnable(uint32_t base)
|
|
{
|
|
struct stm32_usart *_base = (struct stm32_usart *)base;
|
|
_base->CR1 |= CR1_RUN_SET;
|
|
}
|
|
|
|
/* Clear the flags register */
|
|
INLINE void stm32_uartClear(uint32_t base)
|
|
{
|
|
struct stm32_usart *_base = (struct stm32_usart *)base;
|
|
_base->SR &= ~USART_FLAG_MASK;
|
|
}
|
|
|
|
INLINE bool stm32_uartTxDone(uint32_t base)
|
|
{
|
|
struct stm32_usart *_base = (struct stm32_usart *)base;
|
|
return (_base->SR & USART_FLAG_TC);
|
|
}
|
|
|
|
INLINE bool stm32_uartTxReady(uint32_t base)
|
|
{
|
|
struct stm32_usart *_base = (struct stm32_usart *)base;
|
|
return (_base->SR & (BV(CR1_TXEIE) | BV(CR1_TCIE)));
|
|
}
|
|
|
|
INLINE bool stm32_uartRxReady(uint32_t base)
|
|
{
|
|
struct stm32_usart *_base = (struct stm32_usart *)base;
|
|
return (_base->SR & BV(CR1_RXNEIE));
|
|
}
|
|
|
|
INLINE int stm32_uartPutChar(uint32_t base, unsigned char c)
|
|
{
|
|
struct stm32_usart *_base = (struct stm32_usart *)base;
|
|
while (!stm32_uartTxReady(base))
|
|
cpu_relax();
|
|
_base->DR = c;
|
|
return c;
|
|
}
|
|
|
|
INLINE int stm32_uartGetChar(uint32_t base)
|
|
{
|
|
struct stm32_usart * _base = (struct stm32_usart *)base;
|
|
return _base->DR;
|
|
}
|
|
|
|
void stm32_uartSetBaudRate(uint32_t base, unsigned long baud);
|
|
void stm32_uartSetParity(uint32_t base, int parity);
|
|
void stm32_uartInit(int port);
|
|
|
|
#endif /* SER_STM32_H */
|