github -actions bot changed the title Fix uart_ wait_tx _done hanging forever (IDFGH-3139) Fix uart_ wait_tx _done hanging forever (IDFGH-3139) (IDFGH-4571) Jan 12, 2021, There is a ‘companion’ function uart_ wait_tx _done() that monitors the status of the Tx FIFO buffer and returns once it is empty. // Wait for packet to be sent const int uart_num = UART_NUM_2 ESP_ERROR_CHECK ( uart_ wait_tx _done ( uart_num , 100 )) //.
11/1/2017 · I verified this by using the original driver sources (esp-idf/component/driver/uart.c) and the function uart_ wait_tx _done () (This function is triggered by the same interrupt via an RTOS semaphore) and the described issues happens here as well.
uart. wait_tx _done(timeout_ms) Waits at most timeout_ms for the last Tx transaction to complete. Returns True if all data has been sent and the TX buffer has no data in it, otherwise returns False. Constants. Parity types (along with None): UART.EVEN, UART.ODD IRQ trigger sources: UART.RX_ANY . Previous Next, esp_err_t uart_ wait_tx _done (uart_port_t uart_num, TickType_t ticks_to_wait) ¶ Waiting for the last byte of data to be sent. Return. ESP_OK Success ESP_ERR_INVALID_ARG Parameter error Parameters. uart_num: Uart port number. ticks_to_wait: Timeout, count in RTOS ticks int uart_tx_chars (uart_port_t uart_num, const char *buffer, uint32_t len) ¶, 7/30/2020 · Many libraries that implement UART comunication in the PyBoard relies on the use of machine.UART. wait_tx _done (ms) to do delays in half or full duplex communications. https://docs.pycom.io/firmwareapi/pycom … /uart.html. But micropython image for ESP32 (as far as I was able to seach) do not have this method implemented.
There is a ‘companion’ function uart_ wait_tx _done() that waits until all the data are transmitted out and the Tx FIFO is empty. An easier to work with function is uart_write_bytes(). It sets up an intermediate ring buffer and exits after copying the data to this buffer.
doxygenfunction: Cannot find function “uart_ wait_tx _done” in doxygen xml output for project “esp32-idf” from directory: xml/, uart. wait_tx _done(timeout_ms) Waits at most timeout_ms for the last Tx transaction to complete. Returns True if all data has been sent and the TX buffer has no data in it, otherwise returns False. Constants UART.EVEN UART.ODD. Parity types (along with None) UART.RX_ANY. IRQ trigger sources, uart. wait_tx _done(timeout_ms) Constants WDT. Quick Usage Example Constructors. class machine.WDT(id=0, timeout) Methods. wdt.init(timeout) wdt.feed() Timer. class Timer – Measure Time and Set Alarms. Constructors. class Timer.Chrono() class Timer.Alarm(handler=None, s, * , ms, us, arg=None, periodic=False) Methods. Timer.sleep_us() class Chrono. Methods. chrono.start()
