driver(UART): fix uart driver missing txfifo reset issue.
closes
@@ -631,7 +631,10 @@ esp_err_t uart_param_config(uart_port_t uart_num, const uart_config_t *uart_conf
uart_hal_set_tx_idle_num(&(uart_context[uart_num].hal), UART_TX_IDLE_NUM_DEFAULT);
uart_hal_set_hw_flow_ctrl(&(uart_context[uart_num].hal), uart_config->flow_ctrl, uart_config->rx_flow_ctrl_thresh);
UART_EXIT_CRITICAL(&(uart_context[uart_num].spinlock));
+ // The module reset do not reset TX and RX memory.
+ // reset FIFO to avoid garbage data remained in the FIFO.
uart_hal_rxfifo_rst(&(uart_context[uart_num].hal));
+ uart_hal_txfifo_rst(&(uart_context[uart_num].hal));
return ESP_OK;
}
