mirror of
https://github.com/eddyem/stm32samples.git
synced 2026-02-28 11:54:30 +03:00
code tested
This commit is contained in:
325
F1:F103/shutter/proto.c
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325
F1:F103/shutter/proto.c
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/*
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* This file is part of the shutter project.
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* Copyright 2022 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 "hardware.h"
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#include "proto.h"
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#include "shutter.h"
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#include "usb.h"
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#include "version.inc"
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char *omit_spaces(const char *buf){
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while(*buf){
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if(*buf > ' ') break;
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++buf;
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}
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return (char*)buf;
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}
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// In case of overflow return `buf` and N==0xffffffff
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// read decimal number & return pointer to next non-number symbol
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static char *getdec(const char *buf, uint32_t *N){
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char *start = (char*)buf;
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uint32_t num = 0;
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while(*buf){
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char c = *buf;
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if(c < '0' || c > '9'){
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break;
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}
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if(num > 429496729 || (num == 429496729 && c > '5')){ // overflow
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*N = 0xffffff;
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return start;
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}
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num *= 10;
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num += c - '0';
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++buf;
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}
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*N = num;
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return (char*)buf;
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}
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// read hexadecimal number (without 0x prefix!)
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static char *gethex(const char *buf, uint32_t *N){
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char *start = (char*)buf;
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uint32_t num = 0;
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while(*buf){
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char c = *buf;
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uint8_t M = 0;
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if(c >= '0' && c <= '9'){
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M = '0';
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}else if(c >= 'A' && c <= 'F'){
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M = 'A' - 10;
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}else if(c >= 'a' && c <= 'f'){
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M = 'a' - 10;
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}
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if(M){
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if(num & 0xf0000000){ // overflow
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*N = 0xffffff;
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return start;
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}
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num <<= 4;
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num += c - M;
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}else{
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break;
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}
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++buf;
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}
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*N = num;
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return (char*)buf;
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}
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// read octal number (without 0 prefix!)
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static char *getoct(const char *buf, uint32_t *N){
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char *start = (char*)buf;
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uint32_t num = 0;
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while(*buf){
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char c = *buf;
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if(c < '0' || c > '7'){
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break;
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}
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if(num & 0xe0000000){ // overflow
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*N = 0xffffff;
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return start;
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}
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num <<= 3;
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num += c - '0';
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++buf;
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}
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*N = num;
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return (char*)buf;
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}
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// read binary number (without b prefix!)
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static char *getbin(const char *buf, uint32_t *N){
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char *start = (char*)buf;
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uint32_t num = 0;
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while(*buf){
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char c = *buf;
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if(c < '0' || c > '1'){
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break;
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}
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if(num & 0x80000000){ // overflow
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*N = 0xffffff;
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return start;
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}
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num <<= 1;
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if(c == '1') num |= 1;
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++buf;
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}
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*N = num;
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return (char*)buf;
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}
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/**
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* @brief getnum - read uint32_t from string (dec, hex or bin: 127, 0x7f, 0b1111111)
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* @param buf - buffer with number and so on
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* @param N - the number read
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* @return pointer to first non-number symbol in buf
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* (if it is == buf, there's no number or if *N==0xffffffff there was overflow)
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*/
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char *getnum(const char *txt, uint32_t *N){
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char *nxt = NULL;
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char *s = omit_spaces(txt);
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if(*s == '0'){ // hex, oct or 0
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if(s[1] == 'x' || s[1] == 'X'){ // hex
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nxt = gethex(s+2, N);
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if(nxt == s+2) nxt = (char*)txt;
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}else if(s[1] > '0'-1 && s[1] < '8'){ // oct
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nxt = getoct(s+1, N);
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if(nxt == s+1) nxt = (char*)txt;
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}else{ // 0
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nxt = s+1;
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*N = 0;
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}
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}else if(*s == 'b' || *s == 'B'){
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nxt = getbin(s+1, N);
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if(nxt == s+1) nxt = (char*)txt;
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}else{
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nxt = getdec(s, N);
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if(nxt == s) nxt = (char*)txt;
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}
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return nxt;
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}
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const char* helpmsg =
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"https://github.com/eddyem/stm32samples/tree/master/F1:F103/shutter build#" BUILD_NUMBER " @ " BUILD_DATE "\n"
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"'0' - shutter CLO\n"
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"'1' - shutter OPE\n"
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"'2' - shutter HIZ\n"
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"'A' - get raw ADC values\n"
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"'C' - close shutter / abort exposition\n"
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"'E n' - expose for n milliseconds\n"
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"'O' - open shutter\n"
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"'R' - software reset\n"
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"'S' - get shutter state; also hall and ccd inputs state (1 - active)\n"
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"'t' - get MCU temperature (/10degC)\n"
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"'T' - get Tms\n"
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"'v' - get Vdd (/100V)\n"
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"'V' - get shutter voltage (/100V)\n"
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"'W' - test watchdog\n"
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;
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static char stbuf[256], *bptr = NULL;
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static int blen = 0;
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static void initbuf(){bptr = stbuf; blen = 255; *bptr = 0;}
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void add2buf(const char *s){
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while(blen && *s){
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*bptr++ = *s++;
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--blen;
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}
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*bptr = 0;
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}
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void bufputchar(char c){
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if(blen == 0) return;
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*bptr++ = c;
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--blen;
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*bptr = 0;
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}
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static const char *OK = "OK", *ERR = "ERR";
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const char *parse_cmd(const char *buf){
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uint32_t u3;
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initbuf();
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if(buf[1] == '\n' || buf[1] == '\r' || !buf[1]){ // one symbol commands
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switch(*buf){
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case '0':
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SHTRCLOSE();
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add2buf("regstate=close");
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break;
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case '1':
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SHTROPEN();
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add2buf("regstate=open");
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break;
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case '2':
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SHTRHIZ();
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add2buf("regstate=hiz");
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break;
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case 'A':
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for(int i = 0; i < NUMBER_OF_ADC_CHANNELS; ++i){
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add2buf("\nadc");
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bufputchar('0' + i);
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bufputchar('=');
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add2buf(u2str(getADCval(i)));
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}
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break;
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case 'C':
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if(close_shutter()) add2buf(OK);
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else add2buf(ERR);
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break;
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case 'O':
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if(open_shutter()) add2buf(OK);
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else add2buf(ERR);
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break;
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case 'R':
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USB_sendstr("Soft reset\n");
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USB_sendall();
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NVIC_SystemReset();
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break;
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case 'S':
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print_shutter_state();
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add2buf("hall=");
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bufputchar('0' + CHKHALL());
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add2buf("\nccd=");
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bufputchar('0' + CHKCCD());
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break;
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break;
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case 't':
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add2buf("mcut=");
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add2buf(u2str(getMCUtemp()));
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break;
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case 'T':
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add2buf("tms=");
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add2buf(u2str(Tms));
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break;
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case 'v':
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add2buf("vdd=");
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add2buf(u2str(getVdd()));
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break;
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case 'V':
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u3 = getADCvoltage(CHSHTR) * SHTRVMUL;
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add2buf("voltage=");
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add2buf(u2str(u3));
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break;
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case 'W':
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USB_sendstr("Wait for reboot\n");
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USB_sendall();
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while(1){nop();};
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break;
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default:
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return helpmsg;
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}
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}else{ // long messages
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uint32_t Num = 0;
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char *nxt;
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switch(*buf){
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case 'E':
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++buf;
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nxt = getnum(buf, &Num);
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if(buf == nxt){
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if(Num == 0) return "ERRNUM\n";
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return "I32OVERFLOW\n";
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}
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if(shutterstate != SHUTTER_RELAX){
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add2buf(ERR);
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break;
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}
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if(expose_shutter(Num)) add2buf(OK);
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else add2buf(ERR);
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break;
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default:
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return buf;
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}
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}
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bufputchar('\n');
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return stbuf;
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}
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// return string with number `val`
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char *u2str(uint32_t val){
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static char strbuf[11];
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char *bufptr = &strbuf[10];
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*bufptr = 0;
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if(!val){
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*(--bufptr) = '0';
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}else{
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while(val){
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*(--bufptr) = val % 10 + '0';
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val /= 10;
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}
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}
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return bufptr;
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}
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char *u2hexstr(uint32_t val){
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static char strbuf[11] = "0x";
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char *sptr = strbuf + 2;
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uint8_t *ptr = (uint8_t*)&val + 3;
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int8_t i, j, z=1;
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for(i = 0; i < 4; ++i, --ptr){
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if(*ptr == 0){ // omit leading zeros
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if(i == 3) z = 0;
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if(z) continue;
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}
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else z = 0;
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for(j = 1; j > -1; --j){
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uint8_t half = (*ptr >> (4*j)) & 0x0f;
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if(half < 10) *sptr++ = half + '0';
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else *sptr++ = half - 10 + 'a';
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}
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}
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*sptr = 0;
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return strbuf;
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}
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