mirror of
https://github.com/espressif/esp-idf.git
synced 2024-10-05 20:47:46 -04:00
9924d9f271
Closes https://github.com/espressif/esp-idf/issues/8879 Closes https://github.com/espressif/esp-idf/issues/8738
98 lines
2.6 KiB
C
98 lines
2.6 KiB
C
/*
|
|
* SPDX-FileCopyrightText: 2019-2022 Espressif Systems (Shanghai) CO LTD
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <stdbool.h>
|
|
#include <stddef.h>
|
|
#include <stdint.h>
|
|
#include "esp_err.h"
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/**
|
|
* @file usb_console.h
|
|
* This file contains definitions of low-level USB console functions.
|
|
* These functions are not considered to be a public interface and
|
|
* should not be called by applications directly.
|
|
* Application interface to the USB console is provided either by
|
|
* "cdcacm" VFS driver, or by the USB CDC driver in TinyUSB.
|
|
*/
|
|
|
|
|
|
/**
|
|
* RX/TX callback function type
|
|
* @param arg callback-specific context pointer
|
|
*/
|
|
typedef void (*esp_usb_console_cb_t)(void* arg);
|
|
|
|
/**
|
|
* Initialize USB console output using ROM USB CDC driver.
|
|
* This function is called by the early startup code if USB CDC is
|
|
* selected as the console output option.
|
|
* @return
|
|
* - ESP_OK on success
|
|
* - ESP_ERR_NO_MEM
|
|
* - other error codes from the interrupt allocator
|
|
*/
|
|
esp_err_t esp_usb_console_init(void);
|
|
|
|
/**
|
|
* Write a buffer to USB CDC
|
|
* @param buf data to write
|
|
* @param size size of the data, in bytes
|
|
* @return -1 on error, otherwise the number of bytes
|
|
*/
|
|
ssize_t esp_usb_console_write_buf(const char* buf, size_t size);
|
|
|
|
/**
|
|
* @brief Wait until all buffered USB CDC output is written
|
|
*
|
|
* @return ssize_t Number of bytes written, or -1 if the driver is not initialized
|
|
*/
|
|
ssize_t esp_usb_console_flush(void);
|
|
|
|
/**
|
|
* @brief Read data from USB CDC
|
|
*
|
|
* May read less data than requested.
|
|
*
|
|
* @param buf Buffer to read data into
|
|
* @param buf_size Size of the buffer
|
|
* @return ssize_t Number of bytes written into the buffer, or -1 if the driver is not initialized
|
|
*/
|
|
ssize_t esp_usb_console_read_buf(char* buf, size_t buf_size);
|
|
|
|
/**
|
|
* @brief Get the number of bytes available for reading from USB CDC
|
|
*
|
|
* @return ssize_t Number of bytes available, or -1 if the driver is not initialized
|
|
*/
|
|
ssize_t esp_usb_console_available_for_read(void);
|
|
|
|
/**
|
|
* @brief Check if data can be written into USB CDC
|
|
*
|
|
* @return true if data can be written now without blocking
|
|
*/
|
|
bool esp_usb_console_write_available(void);
|
|
|
|
/**
|
|
* @brief Set RX/TX callback functions to be called from ISR
|
|
*
|
|
* @param rx_cb RX callback function
|
|
* @param tx_cb TX callback function
|
|
* @param arg callback-specific context pointer
|
|
* @return ESP_OK if the callbacks were set, ESP_ERR_INVALID_STATE if the driver is not initialized
|
|
*/
|
|
esp_err_t esp_usb_console_set_cb(esp_usb_console_cb_t rx_cb, esp_usb_console_cb_t tx_cb, void* arg);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|