diff --git a/components/driver/uart.c b/components/driver/uart.c index 40ae0ee997..eebcb90424 100644 --- a/components/driver/uart.c +++ b/components/driver/uart.c @@ -1143,6 +1143,9 @@ esp_err_t uart_wait_tx_done(uart_port_t uart_num, TickType_t ticks_to_wait) xSemaphoreGive(p_uart_obj[uart_num]->tx_mux); return ESP_OK; } + if (!UART_IS_MODE_SET(uart_num, UART_MODE_RS485_HALF_DUPLEX)) { + uart_hal_clr_intsts_mask(&(uart_context[uart_num].hal), UART_INTR_TX_DONE); + } UART_ENTER_CRITICAL(&(uart_context[uart_num].spinlock)); uart_hal_ena_intr_mask(&(uart_context[uart_num].hal), UART_INTR_TX_DONE); UART_EXIT_CRITICAL(&(uart_context[uart_num].spinlock));