espressif/ESP8266_RTOS_SDK
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bugfix(uart): Open uart_wait_tx_done() function and avoid using tx_buffer in uart1

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This commit is contained in:
XiongYu
2018-12-07 15:33:44 +08:00
parent b0f7ff508d
commit d1ab0c20dd
2 changed files with 33 additions and 7 deletions
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29
components/esp8266/driver/uart.c
View File

@ -78,6 +78,7 @@ typedef struct {
// tx parameters
SemaphoreHandle_t tx_fifo_sem; /*!< UART TX FIFO semaphore*/
SemaphoreHandle_t tx_done_sem; /*!< UART TX done semaphore*/
SemaphoreHandle_t tx_mux; /*!< UART TX mutex*/
int tx_buf_size; /*!< TX ring buffer size */
RingbufHandle_t tx_ring_buf; /*!< TX ring buffer handler*/
@ -248,7 +249,7 @@ esp_err_t uart_get_hw_flow_ctrl(uart_port_t uart_num, uart_hw_flowcontrol_t *flo
return ESP_OK;
}
static esp_err_t uart_wait_tx_done(uart_port_t uart_num)
esp_err_t uart_wait_tx_done(uart_port_t uart_num)
{
UART_CHECK((uart_num < UART_NUM_MAX), "uart_num error", ESP_ERR_INVALID_ARG);
@ -256,13 +257,16 @@ static esp_err_t uart_wait_tx_done(uart_port_t uart_num)
uart_get_baudrate(uart_num, &byte_delay_us);
byte_delay_us = (uint32_t)(10000000/byte_delay_us); // (1/baudrate)*10*1000_000 us
while (1) {
// wait for tx done.
if (UART[uart_num]->status.txfifo_cnt == 0) {
ets_delay_us(byte_delay_us); // Delay one byte time to guarantee transmission completion
return ESP_OK;
// wait for tx done sem.
if (pdTRUE == xSemaphoreTake(p_uart_obj[uart_num]->tx_done_sem, (portTickType)portMAX_DELAY)) {
while (1) {
if (UART[uart_num]->status.txfifo_cnt == 0) {
ets_delay_us(byte_delay_us); // Delay one byte time to guarantee transmission completion
break;
}
}
}
return ESP_OK;
}
esp_err_t uart_enable_swap(void)
@ -558,6 +562,10 @@ static void uart_rx_intr_handler_default(void *param)
if (p_uart->tx_len_tot == 0) {
en_tx_flg = false;
xSemaphoreGiveFromISR(p_uart->tx_done_sem, &task_woken);
if (task_woken == pdTRUE) {
portYIELD_FROM_ISR();
}
} else {
en_tx_flg = true;
}
@ -709,8 +717,8 @@ static int uart_tx_all(uart_port_t uart_num, const char *src, size_t size)
}
xSemaphoreGive(p_uart_obj[uart_num]->tx_fifo_sem);
xSemaphoreGive(p_uart_obj[uart_num]->tx_done_sem);
}
uart_wait_tx_done(uart_num);
xSemaphoreGive(p_uart_obj[uart_num]->tx_mux);
return original_size;
}
@ -870,6 +878,7 @@ esp_err_t uart_driver_install(uart_port_t uart_num, int rx_buffer_size, int tx_b
{
esp_err_t r;
UART_CHECK((uart_num < UART_NUM_MAX), "uart_num error", ESP_ERR_INVALID_ARG);
UART_CHECK((uart_num == UART_NUM_1) ? (tx_buffer_size == 0) : 1, "uart1 cannot use tx_buffer", ESP_ERR_INVALID_ARG);
UART_CHECK((rx_buffer_size > UART_FIFO_LEN) || ((uart_num == UART_NUM_1) && (rx_buffer_size == 0)), "uart rx buffer length error(>128)", ESP_ERR_INVALID_ARG);
UART_CHECK((tx_buffer_size > UART_FIFO_LEN) || (tx_buffer_size == 0), "uart tx buffer length error(>128 or 0)", ESP_ERR_INVALID_ARG);
UART_CHECK((queue_size >= 0), "queue_size error(>=0)", ESP_ERR_INVALID_ARG);
@ -885,6 +894,7 @@ esp_err_t uart_driver_install(uart_port_t uart_num, int rx_buffer_size, int tx_b
p_uart_obj[uart_num]->uart_num = uart_num;
p_uart_obj[uart_num]->uart_mode = UART_MODE_UART;
p_uart_obj[uart_num]->tx_fifo_sem = xSemaphoreCreateBinary();
p_uart_obj[uart_num]->tx_done_sem = xSemaphoreCreateBinary();
xSemaphoreGive(p_uart_obj[uart_num]->tx_fifo_sem);
p_uart_obj[uart_num]->tx_mux = xSemaphoreCreateMutex();
p_uart_obj[uart_num]->rx_mux = xSemaphoreCreateMutex();
@ -970,6 +980,11 @@ esp_err_t uart_driver_delete(uart_port_t uart_num)
p_uart_obj[uart_num]->tx_fifo_sem = NULL;
}
if (p_uart_obj[uart_num]->tx_done_sem) {
vSemaphoreDelete(p_uart_obj[uart_num]->tx_done_sem);
p_uart_obj[uart_num]->tx_done_sem = NULL;
}
if (p_uart_obj[uart_num]->tx_mux) {
vSemaphoreDelete(p_uart_obj[uart_num]->tx_mux);
p_uart_obj[uart_num]->tx_mux = NULL;

11
components/esp8266/include/driver/uart.h
View File

@ -440,6 +440,17 @@ esp_err_t uart_driver_install(uart_port_t uart_num, int rx_buffer_size, int tx_b
*/
esp_err_t uart_driver_delete(uart_port_t uart_num);
/**
* @brief Waiting for the last byte of data to be sent
*
* @param uart_num Uart port number.
*
* @return
* - ESP_OK Success
* - ESP_ERR_INVALID_ARG Parameter error
*/
esp_err_t uart_wait_tx_done(uart_port_t uart_num);
/**
* @brief Send data to the UART port from a given buffer and length.
*