Answers checklist.

[X] I have read the documentation ESP-IDF Programming Guide and the issue is not addressed there.
[X] I have updated my IDF branch (master or release) to the latest version and checked that the issue is present there.
[X] I have searched the issue tracker for a similar issue and not found a similar issue.

IDF version.

v5.1.1 to v5.1.2

Espressif SoC revision.

ESP32-H2

Operating System used.

Windows

How did you build your project?

Eclipse IDE

If you are using Windows, please specify command line type.

None

Development Kit.

CUSTOM

Power Supply used.

USB

What is the expected behavior?

No this error

What is the actual behavior?

UART driver error

Steps to reproduce.

define PM1006K_BUFFER_LENGTH 20

uart_config_t uart_config = { .baud_rate = 9600, .data_bits = UART_DATA_8_BITS, .parity = UART_PARITY_DISABLE, .stop_bits = UART_STOP_BITS_1, .flow_ctrl = UART_HW_FLOWCTRL_DISABLE, };

ESP_ERROR_CHECK(uart_driver_install(uart, PM1006K_BUFFER_LENGTH, PM1006K_BUFFER_LENGTH, 10, &uart_queue, 0));
ESP_ERROR_CHECK(uart_param_config(uart, &uart_config));
ESP_ERROR_CHECK(uart_set_pin(uart, pin_tx, pin_rx, UART_PIN_NO_CHANGE, UART_PIN_NO_CHANGE));

Debug Logs.

E (486) uart: uart_driver_install(1550): uart rx buffer length error
ESP_ERROR_CHECK failed: esp_err_t 0xffffffff (ESP_FAIL) at 0x420077ac

More Information.

If I just commit ESP_RETURN_ON_FALSE((rx_buffer_size > SOC_UART_FIFO_LEN), ESP_FAIL, UART_TAG, "uart rx buffer length error"); ESP_RETURN_ON_FALSE((tx_buffer_size > SOC_UART_FIFO_LEN) || (tx_buffer_size == 0), ESP_FAIL, UART_TAG, "uart tx buffer length error");

then everything is Ok

espressif / esp-idf

uart_driver_install(1550): uart rx buffer length error (IDFGH-11584) #12703