mirror of
https://github.com/eddyem/stm32samples.git
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55 lines
1.6 KiB
C
55 lines
1.6 KiB
C
/*
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* This file is part of the F303usartDMA project.
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* Copyright 2021 Edward V. Emelianov <edward.emelianoff@gmail.com>.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "stm32f3.h"
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#include "hardware.h"
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#include "usart.h"
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volatile uint32_t Tms = 0;
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void sys_tick_handler(void){
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++Tms;
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}
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int main(void){
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//sysreset();
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if(!StartHSE()) StartHSI();
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SysTick_Config((uint32_t)72000); // 1ms
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hw_setup();
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usart_setup();
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uint32_t ctr = Tms;
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while(1){
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if(Tms - ctr > 499){
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ctr = Tms;
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pin_toggle(GPIOB, 1 << 1 | 1 << 0); // toggle LED @ PB0
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}
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if(usart_ovr()) usart_send("Buffer overflow occured!\n");
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if(chk_usart()){ // usart1 received data, store in in buffer
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char *txt = NULL;
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int r = usart_getline(&txt);
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if(r){
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txt[r] = 0;
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usart_send("Got data: _");
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usart_send(txt);
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usart_send("_\n");
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}
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}
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}
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}
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