mirror of
https://github.com/eddyem/stm32samples.git
synced 2025-12-06 02:35:23 +03:00
118 lines
3.2 KiB
C
118 lines
3.2 KiB
C
/*
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* This file is part of the canrelay 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 "adc.h"
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#include "buttons.h"
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#include "can.h"
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#include "custom_buttons.h"
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#include "flash.h"
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#include "hardware.h"
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#include "strfunct.h"
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#include "usb.h"
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#include "usb_lib.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 USBBUF 63
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// usb getline
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static char *get_USB(){
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static char tmpbuf[USBBUF+1], *curptr = tmpbuf;
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static int rest = USBBUF;
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uint8_t x = USB_receive((uint8_t*)curptr);
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if(!x) return NULL;
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curptr[x] = 0;
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if(x == 1 && *curptr == 0x7f){ // backspace
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if(curptr > tmpbuf){
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--curptr;
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USND("\b \b");
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}
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return NULL;
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}
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USB_sendstr(curptr); // echo
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if(curptr[x-1] == '\n'){ // || curptr[x-1] == '\r'){
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curptr = tmpbuf;
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rest = USBBUF;
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// omit empty lines
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if(tmpbuf[0] == '\n') return NULL;
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// and wrong empty lines
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if(tmpbuf[0] == '\r' && tmpbuf[1] == '\n') return NULL;
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return tmpbuf;
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}
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curptr += x; rest -= x;
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if(rest <= 0){ // buffer overflow
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curptr = tmpbuf;
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rest = USBBUF;
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}
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return NULL;
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}
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int main(void){
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uint8_t ctr, len;
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CAN_message *can_mesg;
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char *txt;
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sysreset();
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SysTick_Config(6000, 1);
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flashstorage_init();
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gpio_setup();
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USB_setup();
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CAN_setup(DEFAULT_CAN_SPEED);
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adc_setup();
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timers_setup();
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RCC->CSR |= RCC_CSR_RMVF; // remove reset flags
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iwdg_setup();
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while (1){
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IWDG->KR = IWDG_REFRESH; // refresh watchdog
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process_keys();
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custom_buttons_process();
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can_proc();
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usb_proc();
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if(CAN_get_status() == CAN_FIFO_OVERRUN){
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SEND("CAN bus fifo overrun occured!\n");
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sendbuf();
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}
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while((can_mesg = CAN_messagebuf_pop())){
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if(can_mesg && isgood(can_mesg->ID)){
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if(ShowMsgs){ // new data in buff
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IWDG->KR = IWDG_REFRESH;
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len = can_mesg->length;
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printu(Tms);
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SEND(" #");
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printuhex(can_mesg->ID);
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for(ctr = 0; ctr < len; ++ctr){
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SEND(" ");
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printuhex(can_mesg->data[ctr]);
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}
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newline(); sendbuf();
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}
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}
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}
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if((txt = get_USB())){
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IWDG->KR = IWDG_REFRESH;
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cmd_parser(txt);
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}
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}
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return 0;
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}
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