mirror of
https://github.com/espressif/esp-idf.git
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66fb5a29bb
Apply the pre-commit hook whitespace fixes to all files in the repo. (Line endings, blank lines at end of file, trailing whitespace)
110 lines
2.9 KiB
C
110 lines
2.9 KiB
C
// Copyright 2010-2020 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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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <stdint.h>
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#define ESP_ROM_CDC_ACM_WORK_BUF_MIN 128
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typedef enum {
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ESP_ROM_UART_0,
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ESP_ROM_UART_1,
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ESP_ROM_UART_USB
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} esp_rom_uart_num_t;
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/**
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* @brief Wait for UART TX FIFO is empty and all data has been sent out.
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*
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* @param uart_no UART port number
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*/
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void esp_rom_uart_tx_wait_idle(uint8_t uart_no);
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/**
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* @brief Set clock source and baud rate for UART.
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*
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* @param uart_no UART port number
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* @param clock_hz Source clock (in Hz)
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* @param baud_rate Baud rate to set
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*/
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void esp_rom_uart_set_clock_baudrate(uint8_t uart_no, uint32_t clock_hz, uint32_t baud_rate);
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/**
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* @brief Wait until UART TX FIFO is empty (i.e. flush TX FIFO)
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*
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* @param uart_no UART port number
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*/
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void esp_rom_uart_flush_tx(uint8_t uart_no);
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/**
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* @brief Transmit one character to the console channel.
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*
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* @param c Character to send
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* @return
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* - 0 on success
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* - 1 on failure
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*/
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int esp_rom_uart_tx_one_char(uint8_t c);
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/**
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* @brief Transmit one character to the console channel.
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* @note This function is a wrapper over esp_rom_uart_tx_one_char, it can help handle line ending issue by replacing '\n' with '\r\n'.
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*
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* @param c Character to send
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*/
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void esp_rom_uart_putc(char c);
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/**
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* @brief Get one character from the console channel.
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*
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* @param c Where to store the character
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* @return
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* - 0 on success
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* - 1 on failure or no data available
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*/
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int esp_rom_uart_rx_one_char(uint8_t *c);
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/**
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* @brief Get one line of string from console channel (line ending won't be stored in the buffer).
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*
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* @param str Where to store the string
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* @param max_len Maximum length of the buffer (including the NULL delimiter)
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* @return always return 0 when on success or wait in a loop for rx data
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*/
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int esp_rom_uart_rx_string(uint8_t *str, uint8_t max_len);
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/**
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* @brief Set the UART port used by ets_printf.
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*
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* @param uart_no UART port number
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*/
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void esp_rom_uart_set_as_console(uint8_t uart_no);
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/**
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* @brief Initialize the USB ACM UART
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* @note The ACM working memroy should be at least 128 bytes (ESP_ROM_CDC_ACM_WORK_BUF_MIN) in size.
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*
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* @param cdc_acm_work_mem Pointer to the work memroy used for CDC-ACM
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* @param cdc_acm_work_mem_len Length of work memory
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*/
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void esp_rom_uart_usb_acm_init(void *cdc_acm_work_mem, int cdc_acm_work_mem_len);
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#ifdef __cplusplus
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}
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#endif
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