mirror of
https://github.com/eddyem/stm32samples.git
synced 2025-12-06 18:55:13 +03:00
94 lines
2.1 KiB
C
94 lines
2.1 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 "dmagpio.h"
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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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void parse_incoming_buf(uint8_t *buf, int *len){
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static int lastidx = 0;
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int l = *len;
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for(; lastidx < l; ++lastidx){
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uint8_t cmd = buf[lastidx];
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usb_send(cmd);
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if(cmd == '\n'){
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dmagpio_transfer(buf, *len);
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*len = 0;
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lastidx = 0;
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return;
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}
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}
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}
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/**
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* Send char array wrd thru USB
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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 buff as hex values
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* @param buf - buffer to print
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* @param l - buf length
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* @param s - function to send a byte
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*/
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void print_hex(uint8_t *buff, uint8_t l){
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void putc(uint8_t c){
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if(c < 10)
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usb_send(c + '0');
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else
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usb_send(c + 'a' - 10);
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}
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usb_send('0'); usb_send('x'); // prefix 0x
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while(l--){
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putc(buff[l] >> 4);
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putc(buff[l] & 0x0f);
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}
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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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