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SourceVuESP-IDF Framework and ExamplesESP-IDFuart_get_tx_buffer_free_size()

uart_get_tx_buffer_free_size() function

UART get TX ring buffer free space size

Syntax

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Summary

Declaration

Definition

from uart.h:610

esp_err_t uart_get_tx_buffer_free_size(uart_port_t uart_num, size_t *size);

Implemented in uart.c:1569

Arguments

Argument

Description

uart_num

UART port number, the max port number is (UART_NUM_MAX -1).

size

Pointer of size_t to accept the free space size

Return value

- ESP_OK Success - ESP_ERR_INVALID_ARG Parameter error

Examples

References

from examples