mirror of
https://github.com/eddyem/stm32samples.git
synced 2025-12-06 10:45:11 +03:00
117 lines
3.0 KiB
C
117 lines
3.0 KiB
C
/*
|
|
* This file is part of the pwmtest project.
|
|
* Copyright 2020 Edward V. Emelianov <edward.emelianoff@gmail.com>.
|
|
*
|
|
* 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
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* 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 <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "proto.h"
|
|
#include "usb.h"
|
|
#include "hardware.h"
|
|
|
|
/**
|
|
* @brief getnum - get uint32_t
|
|
* @param buf (i) - string with text
|
|
* @param N (o) - number found
|
|
* @return 1 if all OK
|
|
*/
|
|
static int getnum(const char *buf, uint32_t *N){
|
|
char c;
|
|
int found = 0;
|
|
uint32_t val = 0;
|
|
while((c = *buf)){
|
|
if(c == '\t' || c == ' ') ++buf;
|
|
else break;
|
|
}
|
|
while((c = *buf++)){
|
|
if(c < '0' || c > '9') break;
|
|
val = val * 10 + (uint32_t)(c - '0');
|
|
found = 1;
|
|
}
|
|
if(found){
|
|
*N = val;
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
const char *parse_cmd(const char *buf){
|
|
uint32_t U = 0;
|
|
#define GETN() getnum(buf+1, &U)
|
|
if(buf[1] != '\n'){
|
|
switch(*buf){ // multisymbol commands
|
|
case 'D': // change duty
|
|
if(GETN()){
|
|
if(changePWMduty(U)) return "OK\n";
|
|
else return "Wrong\n";
|
|
}else return "Wrong number\n";
|
|
break;
|
|
case 'F': // change frequency
|
|
if(GETN()){
|
|
if(changePWMfreq(U)) return "OK\n";
|
|
else return "Wrong\n";
|
|
}else return "Wrong number\n";
|
|
break;
|
|
default:
|
|
return buf;
|
|
}
|
|
}
|
|
switch(*buf){
|
|
case '0':
|
|
PWM_OFF();
|
|
return "PWM is off\n";
|
|
break;
|
|
case '1':
|
|
PWM_ON();
|
|
return "PWM is on\n";
|
|
break;
|
|
case 'R':
|
|
USB_send("Soft reset\n");
|
|
NVIC_SystemReset();
|
|
break;
|
|
case 'W':
|
|
USB_send("Wait for reboot\n");
|
|
while(1){nop();};
|
|
break;
|
|
default: // help
|
|
return
|
|
"'0' - turn OFF PWM\n"
|
|
"'1' - turn ON PWM\n"
|
|
"'D n' - change duty (promille)\n"
|
|
"'F n' - change freq (Hz)\n"
|
|
"'R' - software reset\n"
|
|
"'W' - test watchdog\n"
|
|
;
|
|
break;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
static char strbuf[11];
|
|
// return string buffer (strbuf) with val
|
|
char *u2str(uint32_t val){
|
|
char *bufptr = &strbuf[10];
|
|
*bufptr = 0;
|
|
if(!val){
|
|
*(--bufptr) = '0';
|
|
}else{
|
|
while(val){
|
|
*(--bufptr) = val % 10 + '0';
|
|
val /= 10;
|
|
}
|
|
}
|
|
return bufptr;
|
|
}
|