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Merge pull request #420 from armink/master 

[BSP] 完善 stm32f10x 串口驱动
This commit is contained in:
Bernard Xiong 2015-01-31 14:43:50 +08:00
parent aaacd40425 79c37cb30f
commit 588682a1f5
1 changed files with 43 additions and 27 deletions
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48
bsp/stm32f10x/drivers/usart.c
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@ -12,12 +12,12 @@
* 2009-01-05 Bernard the first version * 2009-01-05 Bernard the first version
* 2010-03-29 Bernard remove interrupt Tx and DMA Rx mode * 2010-03-29 Bernard remove interrupt Tx and DMA Rx mode
* 2013-05-13 aozima update for kehong-lingtai. * 2013-05-13 aozima update for kehong-lingtai.
* 2015-01-31 armink make sure the serial transmit complete in putc()
*/ */
#include "stm32f10x.h" #include "stm32f10x.h"
#include "usart.h" #include "usart.h"
#include "board.h" #include "board.h"
#include <rtdevice.h> #include <rtdevice.h>
/* USART1 */ /* USART1 */
@ -54,23 +54,32 @@ static rt_err_t stm32_configure(struct rt_serial_device *serial, struct serial_c
USART_InitStructure.USART_BaudRate = cfg->baud_rate; USART_InitStructure.USART_BaudRate = cfg->baud_rate;
if (cfg->data_bits == DATA_BITS_8) if (cfg->data_bits == DATA_BITS_8){
USART_InitStructure.USART_WordLength = USART_WordLength_8b; USART_InitStructure.USART_WordLength = USART_WordLength_8b;
} else if (cfg->data_bits == DATA_BITS_9) {
USART_InitStructure.USART_WordLength = USART_WordLength_9b;
}
if (cfg->stop_bits == STOP_BITS_1) if (cfg->stop_bits == STOP_BITS_1){
USART_InitStructure.USART_StopBits = USART_StopBits_1; USART_InitStructure.USART_StopBits = USART_StopBits_1;
else if (cfg->stop_bits == STOP_BITS_2) } else if (cfg->stop_bits == STOP_BITS_2){
USART_InitStructure.USART_StopBits = USART_StopBits_2; USART_InitStructure.USART_StopBits = USART_StopBits_2;
}
if (cfg->parity == PARITY_NONE){
USART_InitStructure.USART_Parity = USART_Parity_No; USART_InitStructure.USART_Parity = USART_Parity_No;
} else if (cfg->parity == PARITY_ODD) {
USART_InitStructure.USART_Parity = USART_Parity_Odd;
} else if (cfg->parity == PARITY_EVEN) {
USART_InitStructure.USART_Parity = USART_Parity_Even;
}
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None; USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx; USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
USART_Init(uart->uart_device, &USART_InitStructure); USART_Init(uart->uart_device, &USART_InitStructure);
/* Enable USART */ /* Enable USART */
USART_Cmd(uart->uart_device, ENABLE); USART_Cmd(uart->uart_device, ENABLE);
/* enable interrupt */
USART_ITConfig(uart->uart_device, USART_IT_RXNE, ENABLE);
return RT_EOK; return RT_EOK;
} }
@ -84,13 +93,19 @@ static rt_err_t stm32_control(struct rt_serial_device *serial, int cmd, void *ar
switch (cmd) switch (cmd)
{ {
/* disable interrupt */
case RT_DEVICE_CTRL_CLR_INT: case RT_DEVICE_CTRL_CLR_INT:
/* disable rx irq */ /* disable rx irq */
UART_DISABLE_IRQ(uart->irq); UART_DISABLE_IRQ(uart->irq);
/* disable interrupt */
USART_ITConfig(uart->uart_device, USART_IT_RXNE, DISABLE);
break; break;
/* enable interrupt */
case RT_DEVICE_CTRL_SET_INT: case RT_DEVICE_CTRL_SET_INT:
/* enable rx irq */ /* enable rx irq */
UART_ENABLE_IRQ(uart->irq); UART_ENABLE_IRQ(uart->irq);
/* enable interrupt */
USART_ITConfig(uart->uart_device, USART_IT_RXNE, ENABLE);
break; break;
} }
@ -104,8 +119,8 @@ static int stm32_putc(struct rt_serial_device *serial, char c)
RT_ASSERT(serial != RT_NULL); RT_ASSERT(serial != RT_NULL);
uart = (struct stm32_uart *)serial->parent.user_data; uart = (struct stm32_uart *)serial->parent.user_data;
while (!(uart->uart_device->SR & USART_FLAG_TXE));
uart->uart_device->DR = c; uart->uart_device->DR = c;
while (!(uart->uart_device->SR & USART_FLAG_TC));
return 1; return 1;
} }
@ -158,6 +173,7 @@ void USART1_IRQHandler(void)
/* clear interrupt */ /* clear interrupt */
USART_ClearITPendingBit(uart->uart_device, USART_IT_RXNE); USART_ClearITPendingBit(uart->uart_device, USART_IT_RXNE);
} }
if (USART_GetITStatus(uart->uart_device, USART_IT_TC) != RESET) if (USART_GetITStatus(uart->uart_device, USART_IT_TC) != RESET)
{ {
/* clear interrupt */ /* clear interrupt */
@ -250,21 +266,21 @@ void USART3_IRQHandler(void)
static void RCC_Configuration(void) static void RCC_Configuration(void)
{ {
#ifdef RT_USING_UART1 #if defined(RT_USING_UART1)
/* Enable UART GPIO clocks */ /* Enable UART GPIO clocks */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE); RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
/* Enable UART clock */ /* Enable UART clock */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE); RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);
#endif /* RT_USING_UART1 */ #endif /* RT_USING_UART1 */
#ifdef RT_USING_UART2 #if defined(RT_USING_UART2)
/* Enable UART GPIO clocks */ /* Enable UART GPIO clocks */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE); RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
/* Enable UART clock */ /* Enable UART clock */
RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE); RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE);
#endif /* RT_USING_UART2 */ #endif /* RT_USING_UART2 */
#ifdef RT_USING_UART3 #if defined(RT_USING_UART3)
/* Enable UART GPIO clocks */ /* Enable UART GPIO clocks */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE); RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
/* Enable UART clock */ /* Enable UART clock */
@ -278,7 +294,7 @@ static void GPIO_Configuration(void)
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz;
#ifdef RT_USING_UART1 #if defined(RT_USING_UART1)
/* Configure USART Rx/tx PIN */ /* Configure USART Rx/tx PIN */
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_InitStructure.GPIO_Pin = UART1_GPIO_RX; GPIO_InitStructure.GPIO_Pin = UART1_GPIO_RX;
@ -289,7 +305,7 @@ static void GPIO_Configuration(void)
GPIO_Init(UART1_GPIO, &GPIO_InitStructure); GPIO_Init(UART1_GPIO, &GPIO_InitStructure);
#endif /* RT_USING_UART1 */ #endif /* RT_USING_UART1 */
#ifdef RT_USING_UART2 #if defined(RT_USING_UART2)
/* Configure USART Rx/tx PIN */ /* Configure USART Rx/tx PIN */
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_InitStructure.GPIO_Pin = UART2_GPIO_RX; GPIO_InitStructure.GPIO_Pin = UART2_GPIO_RX;
@ -300,7 +316,7 @@ static void GPIO_Configuration(void)
GPIO_Init(UART2_GPIO, &GPIO_InitStructure); GPIO_Init(UART2_GPIO, &GPIO_InitStructure);
#endif /* RT_USING_UART2 */ #endif /* RT_USING_UART2 */
#ifdef RT_USING_UART3 #if defined(RT_USING_UART3)
/* Configure USART Rx/tx PIN */ /* Configure USART Rx/tx PIN */
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_InitStructure.GPIO_Pin = UART3_GPIO_RX; GPIO_InitStructure.GPIO_Pin = UART3_GPIO_RX;
@ -332,7 +348,7 @@ void rt_hw_usart_init(void)
RCC_Configuration(); RCC_Configuration();
GPIO_Configuration(); GPIO_Configuration();
#ifdef RT_USING_UART1 #if defined(RT_USING_UART1)
uart = &uart1; uart = &uart1;
config.baud_rate = BAUD_RATE_115200; config.baud_rate = BAUD_RATE_115200;
@ -347,7 +363,7 @@ void rt_hw_usart_init(void)
uart); uart);
#endif /* RT_USING_UART1 */ #endif /* RT_USING_UART1 */
#ifdef RT_USING_UART2 #if defined(RT_USING_UART2)
uart = &uart2; uart = &uart2;
config.baud_rate = BAUD_RATE_115200; config.baud_rate = BAUD_RATE_115200;
@ -362,7 +378,7 @@ void rt_hw_usart_init(void)
uart); uart);
#endif /* RT_USING_UART2 */ #endif /* RT_USING_UART2 */
#ifdef RT_USING_UART3 #if defined(RT_USING_UART3)
uart = &uart3; uart = &uart3;
config.baud_rate = BAUD_RATE_115200; config.baud_rate = BAUD_RATE_115200;