mirror of
https://github.com/eddyem/stm32samples.git
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57 lines
1.6 KiB
C
57 lines
1.6 KiB
C
/*
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* This file is part of the I2Cscan project.
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* Copyright 2020 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 "hardware.h"
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#include "usb_dev.h"
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volatile uint32_t Tms = 0;
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/* Called when systick fires */
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void sys_tick_handler(void){
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++Tms;
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}
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#define STRLEN (256)
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int main(void){
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char inbuff[RBINSZ+1];
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uint32_t lastT = 0;
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StartHSE();
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hw_setup();
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USBPU_OFF();
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SysTick_Config(72000);
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USB_setup();
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#ifndef EBUG
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iwdg_setup();
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#endif
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USBPU_ON();
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while (1){
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IWDG->KR = IWDG_REFRESH; // refresh watchdog
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if(lastT > Tms || Tms - lastT > 499){
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LED_blink(LED0);
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lastT = Tms;
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}
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int l = USB_receivestr(inbuff, RBINSZ);
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if(l < 0) USB_sendstr("ERROR: USB buffer overflow or string was too long\n");
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else if(l){
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USB_sendstr("RECEIVED: _"); USB_sendstr(inbuff); USB_sendstr("_\n");
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}
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}
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return 0;
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}
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