74 lines
2.1 KiB
C
74 lines
2.1 KiB
C
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// Copyright 2019-2020 Espressif Systems (Shanghai) PTE LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#pragma once
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#include <stdbool.h>
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#include <stddef.h>
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#include <stdint.h>
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#include "esp_err.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* @file usb_console.h
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* This file contains definitions of low-level USB console functions.
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* These functions are not considered to be a public interface and
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* should not be called by applications directly.
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* Application interface to the USB console is provided either by
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* "cdcacm" VFS driver, or by the USB CDC driver in TinyUSB.
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*/
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/**
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* RX/TX callback function type
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* @param arg callback-specific context pointer
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*/
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typedef void (*esp_usb_console_cb_t)(void* arg);
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/**
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* Initialize USB console output using ROM USB CDC driver.
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* This function is called by the early startup code if USB CDC is
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* selected as the console output option.
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* @return
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* - ESP_OK on success
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* - ESP_ERR_NO_MEM
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* - other error codes from the interrupt allocator
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*/
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esp_err_t esp_usb_console_init(void);
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/**
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* Write a buffer to USB CDC
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* @param buf data to write
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* @param size size of the data, in bytes
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* @return -1 on error, otherwise the number of bytes
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*/
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ssize_t esp_usb_console_write_buf(const char* buf, size_t size);
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ssize_t esp_usb_console_flush(void);
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ssize_t esp_usb_console_read_buf(char* buf, size_t buf_size);
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bool esp_usb_console_read_available(void);
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bool esp_usb_console_write_available(void);
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esp_err_t esp_usb_console_set_cb(esp_usb_console_cb_t rx_cb, esp_usb_console_cb_t tx_cb, void* arg);
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#ifdef __cplusplus
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}
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#endif
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