STM32F1xx micro-controller C firmware template
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/* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <>.
/** library for USB CDC ACM communication (API)
* @file usb_cdcacm.h
* @author King Kévin <>
* @date 2016
#pragma once
/** transmit and receive buffer sizes */
#define CDCACM_BUFFER 64
/** how many bytes available in the received buffer since last read */
extern volatile uint8_t cdcacm_received;
/** setup USB CDC ACM peripheral */
void cdcacm_setup(void);
/** get character received over USB (blocking)
* @return character received over USB
* @note blocks until character is received over USB when received buffer is empty
char cdcacm_getchar(void);
/** send character over USB (non-blocking)
* @param[in] c character to send
* @note blocks if transmit buffer is full, else puts in buffer and returns
void cdcacm_putchar(char c);