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uart tx in interrupt mode

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This commit is contained in:
tkl 2016-08-17 13:29:05 +02:00
parent 4a9da1a9fd
commit 3cafc5aa92
1 changed files with 46 additions and 15 deletions
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61
source/firmware/arch/stm32f4xx/driver/stm32f4_uart.c
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@ -15,33 +15,54 @@
#include "stm32f4_gpio.h"
struct stm32f4_uart_obj {
const void *callback; //!< Interrupt callback.
const void *parameter; //!< argument for the callback.
UART_HandleTypeDef *uart1_handle;
UART_HandleTypeDef *uart2_handle;
UART_HandleTypeDef *uart3_handle;
UART_HandleTypeDef *uart6_handle;
};
static volatile struct stm32f4_uart_obj uart1_obj;
static volatile struct stm32f4_uart_obj uart_obj = {
.uart1_handle = NULL,
.uart2_handle = NULL,
.uart3_handle = NULL,
.uart6_handle = NULL,
};
int stm32f4_uart_open(const void *this)
{
if(NULL == this)
return -1;
struct stm32f4_uart *uart = (struct stm32f4_uart *)this;
IRQn_Type irq_type = USART1_IRQn;
/* init gpio */
stm32f4_gpio_open(uart->uart_gpio);
/* uart clock enable */
if(uart->uart_handle->Instance == USART1)
if(uart->uart_handle->Instance == USART1) {
__HAL_RCC_USART1_CLK_ENABLE();
else if(uart->uart_handle->Instance == USART2)
irq_type = USART1_IRQn;
uart_obj.uart1_handle = uart->uart_handle;
}
else if(uart->uart_handle->Instance == USART2) {
__HAL_RCC_USART2_CLK_ENABLE();
else if(uart->uart_handle->Instance == USART3)
irq_type = USART2_IRQn;
uart_obj.uart2_handle = uart->uart_handle;
}
else if(uart->uart_handle->Instance == USART3) {
__HAL_RCC_USART3_CLK_ENABLE();
else if(uart->uart_handle->Instance == USART6)
irq_type = USART3_IRQn;
uart_obj.uart3_handle = uart->uart_handle;
}
else if(uart->uart_handle->Instance == USART6) {
__HAL_RCC_USART6_CLK_ENABLE();
irq_type = USART6_IRQn;
uart_obj.uart3_handle = uart->uart_handle;
}
/* init uart */
HAL_UART_Init((UART_HandleTypeDef *)uart->uart_handle);
HAL_UART_Init(uart->uart_handle);
HAL_NVIC_SetPriority(irq_type, 5, 1);
HAL_NVIC_EnableIRQ(USART1_IRQn);
return (0);
}
@ -51,16 +72,26 @@ int stm32f4_uart_close(const void *this)
if(NULL == this)
return -1;
struct stm32f4_uart *uart = (struct stm32f4_uart *)this;
IRQn_Type irq_type = USART1_IRQn;
HAL_UART_DeInit((UART_HandleTypeDef *)uart->uart_handle);
if(uart->uart_handle->Instance == USART1)
if(uart->uart_handle->Instance == USART1) {
__HAL_RCC_USART1_CLK_DISABLE();
else if(uart->uart_handle->Instance == USART2)
irq_type = USART1_IRQn;
}
else if(uart->uart_handle->Instance == USART2) {
__HAL_RCC_USART2_CLK_DISABLE();
else if(uart->uart_handle->Instance == USART3)
irq_type = USART2_IRQn;
}
else if(uart->uart_handle->Instance == USART3) {
__HAL_RCC_USART3_CLK_DISABLE();
else if(uart->uart_handle->Instance == USART6)
irq_type = USART3_IRQn;
}
else if(uart->uart_handle->Instance == USART6) {
__HAL_RCC_USART6_CLK_DISABLE();
irq_type = USART6_IRQn;
}
HAL_NVIC_DisableIRQ(irq_type);
stm32f4_gpio_close(uart->uart_gpio);
return (0);
@ -76,7 +107,7 @@ int stm32f4_uart_write(const void *this, const char *buffer, int len)
if(NULL == this)
return -1;
struct stm32f4_uart *uart = (struct stm32f4_uart *)this;
HAL_UART_Transmit((UART_HandleTypeDef *)uart->uart_handle, (uint8_t *)buffer, len, 1000);
HAL_UART_Transmit_IT(uart->uart_handle, (uint8_t *)buffer, len);
return len;
}
@ -89,6 +120,6 @@ int stm32f4_uart_set_cb(const void *this, const void *callback, const void *para
void USART1_IRQHandler(void)
{
enter_isr();
// check if the USART1 receive interrupt flag was set
HAL_UART_IRQHandler(uart_obj.uart1_handle);
exit_isr();
}