mirror of
https://github.com/eddyem/stm32samples.git
synced 2025-12-06 02:35:23 +03:00
108 lines
2.8 KiB
C
108 lines
2.8 KiB
C
/*
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* user_proto.c
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*
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* Copyright 2014 Edward V. Emelianov <eddy@sao.ru, 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 2 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, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*/
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#include "cdcacm.h"
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#include "main.h"
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#include "hardware_ini.h"
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#include "timer.h"
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void help(){
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P("g\tShow this help\n");
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P("t\tShow current approx. time\n");
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P("+\tIncrease speed by 100\n");
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P("-\tDecrease speed by 100\n");
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P("g\tGet current speed\n");
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}
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/**
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* parce command buffer buf with length len
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* return 0 if buffer processed or len if there's not enough data in buffer
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*/
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int parce_incoming_buf(char *buf, int len){
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uint8_t command;
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int i = 0;
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for(; i < len; i++){
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command = buf[i];
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if(!command) continue; // omit zero
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switch (command){
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case 'h': // show help
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help();
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break;
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case 't':
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newline();
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print_int(Timer); // be careful for Time >= 2^{31}!!!
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newline();
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break;
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case 'g':
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P("Current speed: ");
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print_int(current_RPM);
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P("rpm\n");
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break;
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case '+':
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increase_speed();
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break;
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case '-':
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decrease_speed();
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break;
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break;
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case '\n': // show newline, space and tab as is
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case '\r':
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case ' ':
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case '\t':
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break;
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default:
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command = '?'; // echo '?' on unknown command in byte mode
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}
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usb_send(command); // echo readed byte
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}
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return 0; // all data processed - 0 bytes leave in buffer
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}
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/**
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* Send char array wrd thru USB or UART
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*/
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void prnt(uint8_t *wrd){
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if(!wrd) return;
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while(*wrd) usb_send(*wrd++);
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}
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/**
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* Print decimal integer value
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* @param N - value to print
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* @param s - function to send a byte
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*/
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void print_int(int32_t N){
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uint8_t buf[10], L = 0;
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if(N < 0){
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usb_send('-');
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N = -N;
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}
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if(N){
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while(N){
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buf[L++] = N % 10 + '0';
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N /= 10;
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}
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while(L--) usb_send(buf[L]);
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}else usb_send('0');
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}
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