diff --git a/bsp/stm32f10x/drivers/usart.c b/bsp/stm32f10x/drivers/usart.c index 4c6f24af30..b10b971538 100644 --- a/bsp/stm32f10x/drivers/usart.c +++ b/bsp/stm32f10x/drivers/usart.c @@ -12,28 +12,28 @@ * 2009-01-05 Bernard the first version * 2010-03-29 Bernard remove interrupt Tx and DMA Rx mode * 2013-05-13 aozima update for kehong-lingtai. + * 2015-01-31 armink make sure the serial transmit complete in putc() */ #include "stm32f10x.h" #include "usart.h" #include "board.h" - #include /* USART1 */ -#define UART1_GPIO_TX GPIO_Pin_9 -#define UART1_GPIO_RX GPIO_Pin_10 -#define UART1_GPIO GPIOA +#define UART1_GPIO_TX GPIO_Pin_9 +#define UART1_GPIO_RX GPIO_Pin_10 +#define UART1_GPIO GPIOA /* USART2 */ -#define UART2_GPIO_TX GPIO_Pin_2 -#define UART2_GPIO_RX GPIO_Pin_3 -#define UART2_GPIO GPIOA +#define UART2_GPIO_TX GPIO_Pin_2 +#define UART2_GPIO_RX GPIO_Pin_3 +#define UART2_GPIO GPIOA /* USART3_REMAP[1:0] = 00 */ -#define UART3_GPIO_TX GPIO_Pin_10 -#define UART3_GPIO_RX GPIO_Pin_11 -#define UART3_GPIO GPIOB +#define UART3_GPIO_TX GPIO_Pin_10 +#define UART3_GPIO_RX GPIO_Pin_11 +#define UART3_GPIO GPIOB /* STM32 uart driver */ struct stm32_uart @@ -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; - if (cfg->data_bits == DATA_BITS_8) + if (cfg->data_bits == DATA_BITS_8){ 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; - else if (cfg->stop_bits == STOP_BITS_2) + } else if (cfg->stop_bits == STOP_BITS_2){ USART_InitStructure.USART_StopBits = USART_StopBits_2; + } + + if (cfg->parity == PARITY_NONE){ + 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_Parity = USART_Parity_No; USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None; USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx; USART_Init(uart->uart_device, &USART_InitStructure); /* Enable USART */ USART_Cmd(uart->uart_device, ENABLE); - /* enable interrupt */ - USART_ITConfig(uart->uart_device, USART_IT_RXNE, ENABLE); return RT_EOK; } @@ -84,13 +93,19 @@ static rt_err_t stm32_control(struct rt_serial_device *serial, int cmd, void *ar switch (cmd) { + /* disable interrupt */ case RT_DEVICE_CTRL_CLR_INT: /* disable rx irq */ UART_DISABLE_IRQ(uart->irq); + /* disable interrupt */ + USART_ITConfig(uart->uart_device, USART_IT_RXNE, DISABLE); break; + /* enable interrupt */ case RT_DEVICE_CTRL_SET_INT: /* enable rx irq */ UART_ENABLE_IRQ(uart->irq); + /* enable interrupt */ + USART_ITConfig(uart->uart_device, USART_IT_RXNE, ENABLE); break; } @@ -104,8 +119,8 @@ static int stm32_putc(struct rt_serial_device *serial, char c) RT_ASSERT(serial != RT_NULL); uart = (struct stm32_uart *)serial->parent.user_data; - while (!(uart->uart_device->SR & USART_FLAG_TXE)); uart->uart_device->DR = c; + while (!(uart->uart_device->SR & USART_FLAG_TC)); return 1; } @@ -158,6 +173,7 @@ void USART1_IRQHandler(void) /* clear interrupt */ USART_ClearITPendingBit(uart->uart_device, USART_IT_RXNE); } + if (USART_GetITStatus(uart->uart_device, USART_IT_TC) != RESET) { /* clear interrupt */ @@ -250,21 +266,21 @@ void USART3_IRQHandler(void) static void RCC_Configuration(void) { -#ifdef RT_USING_UART1 +#if defined(RT_USING_UART1) /* Enable UART GPIO clocks */ RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE); /* Enable UART clock */ RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE); #endif /* RT_USING_UART1 */ -#ifdef RT_USING_UART2 +#if defined(RT_USING_UART2) /* Enable UART GPIO clocks */ RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE); /* Enable UART clock */ RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE); #endif /* RT_USING_UART2 */ -#ifdef RT_USING_UART3 +#if defined(RT_USING_UART3) /* Enable UART GPIO clocks */ RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE); /* Enable UART clock */ @@ -278,7 +294,7 @@ static void GPIO_Configuration(void) GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz; -#ifdef RT_USING_UART1 +#if defined(RT_USING_UART1) /* Configure USART Rx/tx PIN */ GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; GPIO_InitStructure.GPIO_Pin = UART1_GPIO_RX; @@ -289,7 +305,7 @@ static void GPIO_Configuration(void) GPIO_Init(UART1_GPIO, &GPIO_InitStructure); #endif /* RT_USING_UART1 */ -#ifdef RT_USING_UART2 +#if defined(RT_USING_UART2) /* Configure USART Rx/tx PIN */ GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; GPIO_InitStructure.GPIO_Pin = UART2_GPIO_RX; @@ -300,7 +316,7 @@ static void GPIO_Configuration(void) GPIO_Init(UART2_GPIO, &GPIO_InitStructure); #endif /* RT_USING_UART2 */ -#ifdef RT_USING_UART3 +#if defined(RT_USING_UART3) /* Configure USART Rx/tx PIN */ GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; GPIO_InitStructure.GPIO_Pin = UART3_GPIO_RX; @@ -332,7 +348,7 @@ void rt_hw_usart_init(void) RCC_Configuration(); GPIO_Configuration(); -#ifdef RT_USING_UART1 +#if defined(RT_USING_UART1) uart = &uart1; config.baud_rate = BAUD_RATE_115200; @@ -343,11 +359,11 @@ void rt_hw_usart_init(void) /* register UART1 device */ rt_hw_serial_register(&serial1, "uart1", - RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX, + RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX , uart); #endif /* RT_USING_UART1 */ -#ifdef RT_USING_UART2 +#if defined(RT_USING_UART2) uart = &uart2; config.baud_rate = BAUD_RATE_115200; @@ -362,7 +378,7 @@ void rt_hw_usart_init(void) uart); #endif /* RT_USING_UART2 */ -#ifdef RT_USING_UART3 +#if defined(RT_USING_UART3) uart = &uart3; config.baud_rate = BAUD_RATE_115200;