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/*
* The MIT License (MIT)
*
* Copyright (c) 2016 Matthias P. Braendli
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#pragma once
const uint16_t GPIOA_PIN_USART2_RX = GPIO_Pin_3;
const uint16_t GPIOA_PIN_USART2_TX = GPIO_Pin_2;
char msg[32];
static int cnt = 0;
void printcnt(void)
{
snprintf(msg, 31, "%d ", cnt++);
char* c = msg;
while (*c) {
USART_SendData(USART2, *c);
while(USART_GetFlagStatus(USART2, USART_FLAG_TXE) == RESET) ;
c++;
}
}
static void usart_puts(USART_TypeDef* USART, const char* str)
{
while(*str) {
// wait until data register is empty
USART_SendData(USART, *str);
while(USART_GetFlagStatus(USART, USART_FLAG_TXE) == RESET) ;
str++;
}
}
#define MAX_MSG_LEN 80
static char usart_debug_message[MAX_MSG_LEN];
void usart_debug(const char *format, ...)
{
va_list list;
va_start(list, format);
vsnprintf(usart_debug_message, MAX_MSG_LEN-1, format, list);
usart_puts(USART2, usart_debug_message);
va_end(list);
}
void usart_debug_puts(const char* str)
{
usart_puts(USART2, str);
}
void USART2_IRQHandler(void)
{
/* RXNE handler */
if(USART_GetITStatus(USART2, USART_IT_RXNE) != RESET)
{
/* If received 't', toggle LED and transmit 'T' */
if((char)USART_ReceiveData(USART2) == 't')
{
USART_SendData(USART2, 'T');
//while(USART_GetFlagStatus(USART2, USART_FLAG_TXE) == RESET) ;
}
else {
USART_SendData(USART2, 'N');
USART_SendData(USART2, 'o');
USART_SendData(USART2, '!');
USART_SendData(USART2, '\n');
}
}
}
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