Andrew Klimenyuk / Mbed 2 deprecated STM32F103C8T6_WIFI_Heating_system

STM32F103C8T6_WIFI_Heating_system

Dependencies:   mbed mbed-STM32F103C8T6 eeprom_flash Watchdog PinDetect DS1820

  1. Bluepill STM32F103C8T6 Heating system
    1. _This project is core part of bigger heating system project!_

Features - Reading temperature from four DS18B20 sensors - Making a decision about switching on/off heater and pomp - Executing simple user commands from UART - Storing state parameters to program memory (EEPROM emulation)

main.cpp@24:4c5909becda6, 2018-09-15 (annotated)

Committer:
andrewklmn
Date:
Sat Sep 15 19:43:38 2018 +0000
Revision:
24:4c5909becda6
Parent:
23:33d6689834c6
Child:
25:49e5d653d789
Interrupt In

Who changed what in which revision?

UserRevisionLine numberNew contents of line
hudakz 5:3c3ef17a17a6 1 #include "stm32f103c8t6.h"
hudakz 0:ab218237069e 2 #include "mbed.h"
andrewklmn 17:718e41e971f8 3 #include "DS1820.h"
andrewklmn 19:74f78a777ffa 4 #include <string>
andrewklmn 12:187e02ab447f 5
andrewklmn 12:187e02ab447f 6 char a[128] = ""; // RX command buffer
andrewklmn 12:187e02ab447f 7 char i = 0; // RX char pointer
andrewklmn 14:d954558361b9 8 static char recieved = 0;
andrewklmn 12:187e02ab447f 9
andrewklmn 17:718e41e971f8 10 Serial pc(PA_2, PA_3);
andrewklmn 23:33d6689834c6 11 DigitalOut myled(LED1);
andrewklmn 24:4c5909becda6 12 InterruptIn pb(PA_11);
andrewklmn 17:718e41e971f8 13
andrewklmn 12:187e02ab447f 14 // This function is called when a character goes into the RX buffer.
andrewklmn 12:187e02ab447f 15 void rxCallback() {
andrewklmn 12:187e02ab447f 16 char c;
andrewklmn 14:d954558361b9 17 c = pc.getc();
andrewklmn 12:187e02ab447f 18 if (recieved == 0){ // skip if command was already received
andrewklmn 12:187e02ab447f 19 if ( c == 0x0d || c == 0x0a ) {
andrewklmn 12:187e02ab447f 20 recieved = 1;
andrewklmn 12:187e02ab447f 21 } else {
andrewklmn 12:187e02ab447f 22 if (i==16){ // max length of command from SERIAL
andrewklmn 12:187e02ab447f 23 a[0] = c;
andrewklmn 12:187e02ab447f 24 a[1] = '\0';
andrewklmn 12:187e02ab447f 25 i = 0;
andrewklmn 12:187e02ab447f 26 } else {
andrewklmn 12:187e02ab447f 27 a[i] = c;
andrewklmn 12:187e02ab447f 28 i++;
andrewklmn 12:187e02ab447f 29 a[i] = '\0';
andrewklmn 12:187e02ab447f 30 };
andrewklmn 14:d954558361b9 31 };
andrewklmn 12:187e02ab447f 32 };
andrewklmn 12:187e02ab447f 33 };
andrewklmn 12:187e02ab447f 34
andrewklmn 23:33d6689834c6 35
andrewklmn 23:33d6689834c6 36 void pb_hit_interrupt (void) {
andrewklmn 23:33d6689834c6 37 pc.printf("Button pressed\r\n");
andrewklmn 23:33d6689834c6 38 };
hudakz 10:4b88be251088 39
hudakz 0:ab218237069e 40 int main() {
andrewklmn 12:187e02ab447f 41
hudakz 10:4b88be251088 42 confSysClock(); //Configure system clock (72MHz HSE clock, 48MHz USB clock)
andrewklmn 22:32beca745706 43
andrewklmn 23:33d6689834c6 44 pb.mode(PullUp);
andrewklmn 23:33d6689834c6 45 pb.fall(&pb_hit_interrupt);
andrewklmn 22:32beca745706 46
andrewklmn 22:32beca745706 47 float temp[5] = {
andrewklmn 22:32beca745706 48 85,85,85,85,85 // initial temperature
andrewklmn 22:32beca745706 49 };
andrewklmn 22:32beca745706 50
andrewklmn 22:32beca745706 51 int error[5] = {
andrewklmn 22:32beca745706 52 0,0,0,0,0 // initial state
andrewklmn 22:32beca745706 53 };
andrewklmn 22:32beca745706 54
andrewklmn 19:74f78a777ffa 55 string labels[5] = {
andrewklmn 19:74f78a777ffa 56 "OUTDOOR",
andrewklmn 19:74f78a777ffa 57 "LITOS",
andrewklmn 19:74f78a777ffa 58 "MEBEL",
andrewklmn 19:74f78a777ffa 59 "HOT WATER",
andrewklmn 19:74f78a777ffa 60 "BACK WATER"
andrewklmn 19:74f78a777ffa 61 };
hudakz 10:4b88be251088 62
andrewklmn 19:74f78a777ffa 63 DS1820 ds1820[5] = {
andrewklmn 19:74f78a777ffa 64 DS1820(PA_9), // substitute PA_9 with actual mbed pin name connected to the OUTDOOR
andrewklmn 19:74f78a777ffa 65 DS1820(PA_8), // substitute PA_8 with actual mbed pin name connected to the INDOOR LITOS
andrewklmn 19:74f78a777ffa 66 DS1820(PA_7), // substitute PA_7 with actual mbed pin name connected to the INDOOR MEBEL
andrewklmn 19:74f78a777ffa 67 DS1820(PA_6), // substitute PA_6 with actual mbed pin name connected to the HOT WATER
andrewklmn 19:74f78a777ffa 68 DS1820(PA_5) // substitute PA_6 with actual mbed pin name connected to the HOT WATER
andrewklmn 19:74f78a777ffa 69 };
andrewklmn 19:74f78a777ffa 70
andrewklmn 12:187e02ab447f 71 pc.attach(&rxCallback, Serial::RxIrq);
andrewklmn 15:721546347507 72 pc.baud(115200);
andrewklmn 21:819277430a55 73 pc.printf("Wifi Heating system\r\n");
andrewklmn 19:74f78a777ffa 74
andrewklmn 19:74f78a777ffa 75 for ( int j=0; j < 5; j++ ) {
andrewklmn 19:74f78a777ffa 76 if(ds1820[j].begin()) {
andrewklmn 19:74f78a777ffa 77 pc.printf("%s sensor present!\r\n", labels[j].c_str());
andrewklmn 19:74f78a777ffa 78 } else {
andrewklmn 20:4f3a45fd4bbb 79 //pc.printf("No %s sensor found!\r\n", labels[j].c_str());
andrewklmn 19:74f78a777ffa 80 };
andrewklmn 17:718e41e971f8 81 };
andrewklmn 17:718e41e971f8 82
hudakz 0:ab218237069e 83 while(1) {
hudakz 5:3c3ef17a17a6 84 // The on-board LED is connected, via a resistor, to +3.3V (not to GND).
hudakz 3:c6a589f444b9 85 // So to turn the LED on or off we have to set it to 0 or 1 respectively
hudakz 7:accb2c83a007 86 myled = 0; // turn the LED on
andrewklmn 12:187e02ab447f 87 wait_ms(50); // 200 millisecond
andrewklmn 12:187e02ab447f 88 myled = 1; // turn the LED off
andrewklmn 12:187e02ab447f 89 wait_ms(50); // 1000 millisecond
andrewklmn 12:187e02ab447f 90 myled = 0; // turn the LED on
andrewklmn 12:187e02ab447f 91 wait_ms(50); // 200 millisecond
andrewklmn 12:187e02ab447f 92 myled = 1; // turn the LED off
andrewklmn 12:187e02ab447f 93 wait_ms(50); // 1000 millisecond
andrewklmn 12:187e02ab447f 94 myled = 0; // turn the LED on
andrewklmn 12:187e02ab447f 95 wait_ms(50); // 200 millisecond
hudakz 7:accb2c83a007 96 myled = 1; // turn the LED off
andrewklmn 17:718e41e971f8 97
andrewklmn 17:718e41e971f8 98
andrewklmn 19:74f78a777ffa 99 // start temperature conversion from analog to digital
andrewklmn 19:74f78a777ffa 100 for ( int j=0; j < 5; j++ ) {
andrewklmn 19:74f78a777ffa 101 ds1820[j].startConversion();
andrewklmn 19:74f78a777ffa 102 };
andrewklmn 19:74f78a777ffa 103
andrewklmn 17:718e41e971f8 104
andrewklmn 21:819277430a55 105 wait(1.0); // let DS1820 complete the temperature conversion
andrewklmn 22:32beca745706 106
andrewklmn 12:187e02ab447f 107 if (recieved == 1) {
andrewklmn 14:d954558361b9 108
andrewklmn 12:187e02ab447f 109 // command was recieved
andrewklmn 12:187e02ab447f 110 pc.printf(a);
andrewklmn 22:32beca745706 111 pc.printf("\r\n");
andrewklmn 22:32beca745706 112
andrewklmn 22:32beca745706 113 // process_command(a);
andrewklmn 12:187e02ab447f 114
andrewklmn 12:187e02ab447f 115 // ready for new command
andrewklmn 14:d954558361b9 116 recieved = 0;
andrewklmn 12:187e02ab447f 117 a[0] = '\0';
andrewklmn 12:187e02ab447f 118 i = 0;
andrewklmn 14:d954558361b9 119 };
andrewklmn 22:32beca745706 120
andrewklmn 22:32beca745706 121
andrewklmn 22:32beca745706 122
andrewklmn 22:32beca745706 123 for ( int j=0; j < 5; j++ ) {
andrewklmn 14:d954558361b9 124
andrewklmn 22:32beca745706 125 error[j] = ds1820[j].read(temp[j]); // read temperature from DS1820 and perform cyclic redundancy check (CRC)
andrewklmn 22:32beca745706 126
andrewklmn 22:32beca745706 127 switch(error[j]) {
andrewklmn 22:32beca745706 128 case 0: // no errors -> 'temp' contains the value of measured temperature
andrewklmn 22:32beca745706 129 pc.printf("%s = %3.1fC \r\n", labels[j].c_str() , temp[j]);
andrewklmn 22:32beca745706 130 break;
andrewklmn 22:32beca745706 131 case 1: // no sensor present -> 'temp' is not updated
andrewklmn 22:32beca745706 132 //pc.printf("no %s sensor present \r\n", labels[j].c_str() );
andrewklmn 22:32beca745706 133 break;
andrewklmn 22:32beca745706 134 case 2: // CRC error -> 'temp' is not updated
andrewklmn 22:32beca745706 135 pc.printf("%s sensor CRC error \r\n", labels[j].c_str() );
andrewklmn 22:32beca745706 136 };
andrewklmn 22:32beca745706 137
andrewklmn 22:32beca745706 138 };
andrewklmn 22:32beca745706 139
andrewklmn 22:32beca745706 140 pc.printf("State %d|%d|%d|%d|%d\r\n", error[0], error[1], error[2], error[3], error[4] );
andrewklmn 22:32beca745706 141 pc.printf("Temp %3.1f|%3.1f|%3.1f|%3.1f|%3.1f\r\n", temp[0], temp[1], temp[2], temp[3], temp[4] );
andrewklmn 22:32beca745706 142 pc.printf("=======================================");
andrewklmn 22:32beca745706 143
andrewklmn 22:32beca745706 144 };
andrewklmn 22:32beca745706 145 };
hudakz 8:f1432e9af6c8 146