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提交 18d24cfd 编写于 作者: u010763290's avatar u010763290
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增加uart的dma半中断接收方式，用来解决连续一次性接收大于dma缓存的数据而不会丢失数据。

上级 c2244a5c
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Showing with 79 addition and 51 deletion
bsp/stm32/libraries/HAL_Drivers/drv_usart.c
浏览文件 @ 18d24cfd
......@@ -7,7 +7,7 @@
* Date Author Notes
* 2018-10-30 SummerGift first version
*/
#include "board.h"
#include "drv_usart.h"
#include "drv_config.h"
......@@ -20,12 +20,12 @@
#if !defined(BSP_USING_UART1) && !defined(BSP_USING_UART2) && !defined(BSP_USING_UART3) \
&& !defined(BSP_USING_UART4) && !defined(BSP_USING_UART5) && !defined(BSP_USING_UART6) && !defined(BSP_USING_LPUART1)
#error "Please define at least one BSP_USING_UARTx"
/* this driver can be disabled at menuconfig → RT-Thread Components → Device Drivers */
#error "Please define at least one BSP_USING_UARTx"
/* this driver can be disabled at menuconfig → RT-Thread Components → Device Drivers */
#endif
#ifdef RT_SERIAL_USING_DMA
static void stm32_dma_config(struct rt_serial_device *serial);
static void stm32_dma_config(struct rt_serial_device *serial);
#endif
enum
......@@ -56,25 +56,25 @@ enum
static struct stm32_uart_config uart_config[] =
{
#ifdef BSP_USING_UART1
UART1_CONFIG,
UART1_CONFIG,
#endif
#ifdef BSP_USING_UART2
UART2_CONFIG,
UART2_CONFIG,
#endif
#ifdef BSP_USING_UART3
UART3_CONFIG,
UART3_CONFIG,
#endif
#ifdef BSP_USING_UART4
UART4_CONFIG,
UART4_CONFIG,
#endif
#ifdef BSP_USING_UART5
UART5_CONFIG,
UART5_CONFIG,
#endif
#ifdef BSP_USING_UART6
UART6_CONFIG,
UART6_CONFIG,
#endif
#ifdef BSP_USING_LPUART1
LPUART1_CONFIG,
LPUART1_CONFIG,
#endif
};
......@@ -147,7 +147,7 @@ static rt_err_t stm32_control(struct rt_serial_device *serial, int cmd, void *ar
#ifdef RT_SERIAL_USING_DMA
rt_ubase_t ctrl_arg = (rt_ubase_t)arg;
#endif
RT_ASSERT(serial != RT_NULL);
uart = (struct stm32_uart *)serial->parent.user_data;
RT_ASSERT(uart != RT_NULL);
......@@ -239,7 +239,7 @@ static void uart_isr(struct rt_serial_device *serial)
rt_size_t recv_total_index, recv_len;
rt_base_t level;
#endif
RT_ASSERT(serial != RT_NULL);
uart = (struct stm32_uart *) serial->parent.user_data;
......@@ -247,7 +247,7 @@ static void uart_isr(struct rt_serial_device *serial)
/* UART in mode Receiver -------------------------------------------------*/
if ((__HAL_UART_GET_FLAG(&(uart->handle), UART_FLAG_RXNE) != RESET) &&
(__HAL_UART_GET_IT_SOURCE(&(uart->handle), UART_IT_RXNE) != RESET))
(__HAL_UART_GET_IT_SOURCE(&(uart->handle), UART_IT_RXNE) != RESET))
{
rt_hw_serial_isr(serial, RT_SERIAL_EVENT_RX_IND);
}
......@@ -312,6 +312,42 @@ static void uart_isr(struct rt_serial_device *serial)
}
}
#ifdef RT_SERIAL_USING_DMA
static void dma_isr(struct rt_serial_device *serial)
{
struct stm32_uart *uart;
rt_size_t recv_total_index, recv_len;
rt_base_t level;
RT_ASSERT(serial != RT_NULL);
uart = (struct stm32_uart *) serial->parent.user_data;
RT_ASSERT(uart != RT_NULL);
if ((__HAL_DMA_GET_IT_SOURCE(&(uart->dma.handle), DMA_IT_TC) != RESET) ||
(__HAL_DMA_GET_IT_SOURCE(&(uart->dma.handle), DMA_IT_HT) != RESET))
{
level = rt_hw_interrupt_disable();
recv_total_index = serial->config.bufsz - __HAL_DMA_GET_COUNTER(&(uart->dma.handle));
if (recv_total_index == 0)
{
recv_len = serial->config.bufsz - uart->dma.last_index;
}
else
{
recv_len = recv_total_index - uart->dma.last_index;
}
uart->dma.last_index = recv_total_index;
rt_hw_interrupt_enable(level);
if (recv_len)
{
rt_hw_serial_isr(serial, RT_SERIAL_EVENT_RX_DMADONE | (recv_len << 8));
}
}
}
#endif
#if defined(BSP_USING_UART1)
void USART1_IRQHandler(void)
{
......@@ -319,7 +355,7 @@ void USART1_IRQHandler(void)
rt_interrupt_enter();
uart_isr(&(uart_obj[UART1_INDEX].serial));
/* leave interrupt */
rt_interrupt_leave();
}
......@@ -369,7 +405,7 @@ void USART3_IRQHandler(void)
rt_interrupt_enter();
uart_isr(&(uart_obj[UART3_INDEX].serial));
/* leave interrupt */
rt_interrupt_leave();
}
......@@ -394,7 +430,7 @@ void UART4_IRQHandler(void)
rt_interrupt_enter();
uart_isr(&(uart_obj[UART4_INDEX].serial));
/* leave interrupt */
rt_interrupt_leave();
}
......@@ -419,7 +455,7 @@ void UART5_IRQHandler(void)
rt_interrupt_enter();
uart_isr(&(uart_obj[UART5_INDEX].serial));
/* leave interrupt */
rt_interrupt_leave();
}
......@@ -444,7 +480,7 @@ void USART6_IRQHandler(void)
rt_interrupt_enter();
uart_isr(&(uart_obj[UART6_INDEX].serial));
/* leave interrupt */
rt_interrupt_leave();
}
......@@ -469,7 +505,7 @@ void LPUART1_IRQHandler(void)
rt_interrupt_enter();
uart_isr(&(uart_obj[LPUART1_INDEX].serial));
/* leave interrupt */
rt_interrupt_leave();
}
......@@ -494,13 +530,13 @@ static void stm32_dma_config(struct rt_serial_device *serial)
struct stm32_uart *uart = (struct stm32_uart *)serial->parent.user_data;
RT_ASSERT(uart != RT_NULL);
struct rt_serial_rx_fifo *rx_fifo;
LOG_D("%s dma config start", uart->config->name);
{
rt_uint32_t tmpreg= 0x00U;
rt_uint32_t tmpreg = 0x00U;
#if defined(SOC_SERIES_STM32F1) || defined(SOC_SERIES_STM32F0) || defined(SOC_SERIES_STM32G0) \
|| defined(SOC_SERIES_STM32L0)
|| defined(SOC_SERIES_STM32L0)
/* enable DMA clock && Delay after an RCC peripheral clock enabling*/
SET_BIT(RCC->AHBENR, uart->config->dma_rx->dma_rcc);
tmpreg = READ_BIT(RCC->AHBENR, uart->config->dma_rx->dma_rcc);
......@@ -508,7 +544,7 @@ static void stm32_dma_config(struct rt_serial_device *serial)
/* enable DMA clock && Delay after an RCC peripheral clock enabling*/
SET_BIT(RCC->AHB1ENR, uart->config->dma_rx->dma_rcc);
tmpreg = READ_BIT(RCC->AHB1ENR, uart->config->dma_rx->dma_rcc);
#endif
#endif
UNUSED(tmpreg); /* To avoid compiler warnings */
}
......@@ -544,7 +580,7 @@ static void stm32_dma_config(struct rt_serial_device *serial)
}
rx_fifo = (struct rt_serial_rx_fifo *)serial->serial_rx;
/* Start DMA transfer */
if (HAL_UART_Receive_DMA(&(uart->handle), rx_fifo->buffer, serial->config.bufsz) != HAL_OK)
{
......@@ -554,14 +590,14 @@ static void stm32_dma_config(struct rt_serial_device *serial)
/* enable interrupt */
__HAL_UART_ENABLE_IT(&(uart->handle), UART_IT_IDLE);
/* enable rx irq */
HAL_NVIC_SetPriority(uart->config->dma_rx->dma_irq, 0, 0);
HAL_NVIC_EnableIRQ(uart->config->dma_rx->dma_irq);
HAL_NVIC_SetPriority(uart->config->irq_type, 1, 0);
HAL_NVIC_EnableIRQ(uart->config->irq_type);
LOG_D("%s dma RX instance: %x", uart->config->name, uart->dma.handle.Instance);
LOG_D("%s dma config done", uart->config->name);
}
......@@ -590,25 +626,17 @@ void HAL_UART_ErrorCallback(UART_HandleTypeDef *huart)
*/
void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart)
{
struct rt_serial_device *serial;
struct stm32_uart *uart;
rt_size_t recv_len;
rt_base_t level;
RT_ASSERT(huart != NULL);
uart = (struct stm32_uart *)huart;
serial = &uart->serial;
level = rt_hw_interrupt_disable();
recv_len = serial->config.bufsz - uart->dma.last_index;
uart->dma.last_index = 0;
rt_hw_interrupt_enable(level);
if (recv_len)
{
rt_hw_serial_isr(serial, RT_SERIAL_EVENT_RX_DMADONE | (recv_len << 8));
}
dma_isr(&uart->serial);
}
void HAL_UART_RxHalfCpltCallback(UART_HandleTypeDef *huart)
{
struct stm32_uart *uart;
RT_ASSERT(huart != NULL);
uart = (struct stm32_uart *)huart;
dma_isr(&uart->serial);
}
#endif /* RT_SERIAL_USING_DMA */
......@@ -658,7 +686,7 @@ int rt_hw_usart_init(void)
rt_err_t result = 0;
stm32_uart_get_dma_config();
for (int i = 0; i < obj_num; i++)
{
uart_obj[i].config = &uart_config[i];
......@@ -666,20 +694,20 @@ int rt_hw_usart_init(void)
uart_obj[i].serial.config = config;
#if defined(RT_SERIAL_USING_DMA)
if(uart_obj[i].uart_dma_flag)
if (uart_obj[i].uart_dma_flag)
{
/* register UART device */
result = rt_hw_serial_register(&uart_obj[i].serial,uart_obj[i].config->name,
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX| RT_DEVICE_FLAG_DMA_RX
,&uart_obj[i]);
result = rt_hw_serial_register(&uart_obj[i].serial, uart_obj[i].config->name,
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX | RT_DEVICE_FLAG_DMA_RX
, &uart_obj[i]);
}
else
#endif
{
/* register UART device */
result = rt_hw_serial_register(&uart_obj[i].serial,uart_obj[i].config->name,
result = rt_hw_serial_register(&uart_obj[i].serial, uart_obj[i].config->name,
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX
,&uart_obj[i]);
, &uart_obj[i]);
}
RT_ASSERT(result == RT_EOK);
}
......
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