STM32F103C8T6_WIFI_Heating_system
Dependencies: mbed mbed-STM32F103C8T6 eeprom_flash Watchdog PinDetect DS1820
- Bluepill STM32F103C8T6 Heating system
- _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@35:74a546766adb, 2018-09-17 (annotated)
- Committer:
- andrewklmn
- Date:
- Mon Sep 17 20:15:38 2018 +0000
- Revision:
- 35:74a546766adb
- Parent:
- 34:09d8edcce624
- Child:
- 37:c9b96afec535
epprom_flash updated
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
hudakz | 5:3c3ef17a17a6 | 1 | #include "stm32f103c8t6.h" |
hudakz | 0:ab218237069e | 2 | #include "mbed.h" |
andrewklmn | 27:007e17df5ba0 | 3 | #include "mbed_events.h" |
andrewklmn | 27:007e17df5ba0 | 4 | #include <stdio.h> |
andrewklmn | 17:718e41e971f8 | 5 | #include "DS1820.h" |
andrewklmn | 26:750f21025bb9 | 6 | #include "PinDetect.h" |
andrewklmn | 31:0a516ceaec4d | 7 | #include "Watchdog.h" |
andrewklmn | 35:74a546766adb | 8 | #include "eeprom_flash.h" |
andrewklmn | 19:74f78a777ffa | 9 | #include <string> |
andrewklmn | 12:187e02ab447f | 10 | |
andrewklmn | 27:007e17df5ba0 | 11 | // Create a queue that can hold a maximum of 32 events |
andrewklmn | 27:007e17df5ba0 | 12 | EventQueue queue(32 * EVENTS_EVENT_SIZE); |
andrewklmn | 27:007e17df5ba0 | 13 | // Create a thread that'll run the event queue's dispatch function |
andrewklmn | 27:007e17df5ba0 | 14 | //Thread t; |
andrewklmn | 27:007e17df5ba0 | 15 | |
andrewklmn | 32:aebbfe391bbc | 16 | Watchdog wd; |
andrewklmn | 27:007e17df5ba0 | 17 | |
andrewklmn | 12:187e02ab447f | 18 | char a[128] = ""; // RX command buffer |
andrewklmn | 12:187e02ab447f | 19 | char i = 0; // RX char pointer |
andrewklmn | 14:d954558361b9 | 20 | static char recieved = 0; |
andrewklmn | 12:187e02ab447f | 21 | |
andrewklmn | 17:718e41e971f8 | 22 | Serial pc(PA_2, PA_3); |
andrewklmn | 23:33d6689834c6 | 23 | DigitalOut myled(LED1); |
andrewklmn | 17:718e41e971f8 | 24 | |
andrewklmn | 34:09d8edcce624 | 25 | DigitalOut pomp_OFF(PA_12); // pomp off |
andrewklmn | 34:09d8edcce624 | 26 | DigitalOut heater_OFF(PA_15); // heater off |
andrewklmn | 34:09d8edcce624 | 27 | |
andrewklmn | 34:09d8edcce624 | 28 | |
andrewklmn | 27:007e17df5ba0 | 29 | float temp[5] = { |
andrewklmn | 27:007e17df5ba0 | 30 | 85,85,85,85,85 // initial temperature |
andrewklmn | 27:007e17df5ba0 | 31 | }; |
andrewklmn | 27:007e17df5ba0 | 32 | |
andrewklmn | 27:007e17df5ba0 | 33 | int temp_error[5] = { |
andrewklmn | 27:007e17df5ba0 | 34 | 0,0,0,0,0 // initial state |
andrewklmn | 27:007e17df5ba0 | 35 | }; |
andrewklmn | 27:007e17df5ba0 | 36 | |
andrewklmn | 27:007e17df5ba0 | 37 | string labels[5] = { |
andrewklmn | 27:007e17df5ba0 | 38 | "OUTDOOR", |
andrewklmn | 27:007e17df5ba0 | 39 | "LITOS", |
andrewklmn | 27:007e17df5ba0 | 40 | "MEBEL", |
andrewklmn | 27:007e17df5ba0 | 41 | "HOT WATER", |
andrewklmn | 27:007e17df5ba0 | 42 | "BACK WATER" |
andrewklmn | 27:007e17df5ba0 | 43 | }; |
andrewklmn | 27:007e17df5ba0 | 44 | |
andrewklmn | 27:007e17df5ba0 | 45 | DS1820 ds1820[5] = { |
andrewklmn | 27:007e17df5ba0 | 46 | DS1820(PA_9), // substitute PA_9 with actual mbed pin name connected to the OUTDOOR |
andrewklmn | 27:007e17df5ba0 | 47 | DS1820(PA_8), // substitute PA_8 with actual mbed pin name connected to the INDOOR LITOS |
andrewklmn | 27:007e17df5ba0 | 48 | DS1820(PA_7), // substitute PA_7 with actual mbed pin name connected to the INDOOR MEBEL |
andrewklmn | 27:007e17df5ba0 | 49 | DS1820(PA_6), // substitute PA_6 with actual mbed pin name connected to the HOT WATER |
andrewklmn | 27:007e17df5ba0 | 50 | DS1820(PA_5) // substitute PA_6 with actual mbed pin name connected to the HOT WATER |
andrewklmn | 27:007e17df5ba0 | 51 | }; |
andrewklmn | 27:007e17df5ba0 | 52 | |
andrewklmn | 27:007e17df5ba0 | 53 | |
andrewklmn | 29:5940a80717e4 | 54 | |
andrewklmn | 12:187e02ab447f | 55 | // This function is called when a character goes into the RX buffer. |
andrewklmn | 12:187e02ab447f | 56 | void rxCallback() { |
andrewklmn | 12:187e02ab447f | 57 | char c; |
andrewklmn | 14:d954558361b9 | 58 | c = pc.getc(); |
andrewklmn | 12:187e02ab447f | 59 | if (recieved == 0){ // skip if command was already received |
andrewklmn | 12:187e02ab447f | 60 | if ( c == 0x0d || c == 0x0a ) { |
andrewklmn | 29:5940a80717e4 | 61 | while ( pc.readable() ) c = pc.getc(); |
andrewklmn | 12:187e02ab447f | 62 | recieved = 1; |
andrewklmn | 12:187e02ab447f | 63 | } else { |
andrewklmn | 12:187e02ab447f | 64 | if (i==16){ // max length of command from SERIAL |
andrewklmn | 12:187e02ab447f | 65 | a[0] = c; |
andrewklmn | 12:187e02ab447f | 66 | a[1] = '\0'; |
andrewklmn | 12:187e02ab447f | 67 | i = 0; |
andrewklmn | 12:187e02ab447f | 68 | } else { |
andrewklmn | 12:187e02ab447f | 69 | a[i] = c; |
andrewklmn | 12:187e02ab447f | 70 | i++; |
andrewklmn | 12:187e02ab447f | 71 | a[i] = '\0'; |
andrewklmn | 12:187e02ab447f | 72 | }; |
andrewklmn | 14:d954558361b9 | 73 | }; |
andrewklmn | 12:187e02ab447f | 74 | }; |
andrewklmn | 12:187e02ab447f | 75 | }; |
andrewklmn | 12:187e02ab447f | 76 | |
andrewklmn | 23:33d6689834c6 | 77 | |
andrewklmn | 23:33d6689834c6 | 78 | void pb_hit_interrupt (void) { |
andrewklmn | 27:007e17df5ba0 | 79 | pc.printf("Button pressed\r\n"); |
andrewklmn | 23:33d6689834c6 | 80 | }; |
andrewklmn | 25:49e5d653d789 | 81 | |
andrewklmn | 25:49e5d653d789 | 82 | void pb_out_interrupt (void) { |
andrewklmn | 27:007e17df5ba0 | 83 | pc.printf("Button unpressed\r\n"); |
andrewklmn | 25:49e5d653d789 | 84 | }; |
andrewklmn | 27:007e17df5ba0 | 85 | |
andrewklmn | 27:007e17df5ba0 | 86 | void start_temp(){ |
andrewklmn | 29:5940a80717e4 | 87 | |
andrewklmn | 29:5940a80717e4 | 88 | __disable_irq(); |
andrewklmn | 29:5940a80717e4 | 89 | |
andrewklmn | 27:007e17df5ba0 | 90 | for ( int j=0; j < 5; j++ ) { |
andrewklmn | 27:007e17df5ba0 | 91 | if(ds1820[j].begin()) { |
andrewklmn | 27:007e17df5ba0 | 92 | ds1820[j].startConversion(); |
andrewklmn | 27:007e17df5ba0 | 93 | pc.printf("%s sensor present!\r\n", labels[j].c_str()); |
andrewklmn | 27:007e17df5ba0 | 94 | } else { |
andrewklmn | 27:007e17df5ba0 | 95 | pc.printf("No %s sensor found!\r\n", labels[j].c_str()); |
andrewklmn | 27:007e17df5ba0 | 96 | }; |
andrewklmn | 27:007e17df5ba0 | 97 | }; |
andrewklmn | 29:5940a80717e4 | 98 | __enable_irq(); |
andrewklmn | 29:5940a80717e4 | 99 | |
andrewklmn | 27:007e17df5ba0 | 100 | }; |
andrewklmn | 27:007e17df5ba0 | 101 | |
andrewklmn | 27:007e17df5ba0 | 102 | void at_command(){ |
andrewklmn | 27:007e17df5ba0 | 103 | if (recieved == 1) { |
andrewklmn | 27:007e17df5ba0 | 104 | |
andrewklmn | 32:aebbfe391bbc | 105 | __disable_irq(); |
andrewklmn | 32:aebbfe391bbc | 106 | |
andrewklmn | 27:007e17df5ba0 | 107 | // command was recieved |
andrewklmn | 32:aebbfe391bbc | 108 | |
andrewklmn | 32:aebbfe391bbc | 109 | if (a[0]=='A' && a[1]=='T') { |
andrewklmn | 32:aebbfe391bbc | 110 | |
andrewklmn | 32:aebbfe391bbc | 111 | if ( a[2]=='\0') { |
andrewklmn | 32:aebbfe391bbc | 112 | //pc.printf(a); |
andrewklmn | 32:aebbfe391bbc | 113 | pc.printf("OK\r\n"); |
andrewklmn | 33:2c54746f7518 | 114 | } else { |
andrewklmn | 33:2c54746f7518 | 115 | pc.printf("Wrong AT command\r\n"); |
andrewklmn | 32:aebbfe391bbc | 116 | }; |
andrewklmn | 32:aebbfe391bbc | 117 | } else { |
andrewklmn | 32:aebbfe391bbc | 118 | pc.printf("Wrong request\r\n"); |
andrewklmn | 32:aebbfe391bbc | 119 | }; |
andrewklmn | 27:007e17df5ba0 | 120 | |
andrewklmn | 27:007e17df5ba0 | 121 | // process_command(a); |
andrewklmn | 27:007e17df5ba0 | 122 | |
andrewklmn | 32:aebbfe391bbc | 123 | __enable_irq(); |
andrewklmn | 32:aebbfe391bbc | 124 | |
andrewklmn | 27:007e17df5ba0 | 125 | // ready for new command |
andrewklmn | 27:007e17df5ba0 | 126 | recieved = 0; |
andrewklmn | 27:007e17df5ba0 | 127 | a[0] = '\0'; |
andrewklmn | 27:007e17df5ba0 | 128 | i = 0; |
andrewklmn | 27:007e17df5ba0 | 129 | }; |
andrewklmn | 27:007e17df5ba0 | 130 | }; |
andrewklmn | 27:007e17df5ba0 | 131 | |
andrewklmn | 27:007e17df5ba0 | 132 | |
andrewklmn | 27:007e17df5ba0 | 133 | void check_temp(){ |
andrewklmn | 27:007e17df5ba0 | 134 | |
andrewklmn | 27:007e17df5ba0 | 135 | myled = 0; // turn the LED on |
andrewklmn | 27:007e17df5ba0 | 136 | |
andrewklmn | 32:aebbfe391bbc | 137 | // kick the watchdog |
andrewklmn | 32:aebbfe391bbc | 138 | wd.Service(); |
andrewklmn | 29:5940a80717e4 | 139 | |
andrewklmn | 29:5940a80717e4 | 140 | __disable_irq(); |
andrewklmn | 29:5940a80717e4 | 141 | |
andrewklmn | 27:007e17df5ba0 | 142 | for ( int j=0; j < 5; j++ ) { |
andrewklmn | 27:007e17df5ba0 | 143 | |
andrewklmn | 27:007e17df5ba0 | 144 | temp_error[j] = ds1820[j].read(temp[j]); // read temperature from DS1820 and perform cyclic redundancy check (CRC) |
andrewklmn | 27:007e17df5ba0 | 145 | |
andrewklmn | 27:007e17df5ba0 | 146 | switch(temp_error[j]) { |
andrewklmn | 27:007e17df5ba0 | 147 | case 0: // no errors -> 'temp' contains the value of measured temperature |
andrewklmn | 27:007e17df5ba0 | 148 | pc.printf("%s = %3.1fC \r\n", labels[j].c_str() , temp[j]); |
andrewklmn | 27:007e17df5ba0 | 149 | break; |
andrewklmn | 27:007e17df5ba0 | 150 | case 1: // no sensor present -> 'temp' is not updated |
andrewklmn | 27:007e17df5ba0 | 151 | pc.printf("no %s sensor present \r\n", labels[j].c_str() ); |
andrewklmn | 27:007e17df5ba0 | 152 | break; |
andrewklmn | 27:007e17df5ba0 | 153 | case 2: // CRC error -> 'temp' is not updated |
andrewklmn | 27:007e17df5ba0 | 154 | pc.printf("%s sensor CRC error \r\n", labels[j].c_str() ); |
andrewklmn | 27:007e17df5ba0 | 155 | }; |
andrewklmn | 27:007e17df5ba0 | 156 | // start temperature conversion from analog to digital |
andrewklmn | 27:007e17df5ba0 | 157 | ds1820[j].startConversion(); |
andrewklmn | 27:007e17df5ba0 | 158 | }; |
andrewklmn | 29:5940a80717e4 | 159 | |
andrewklmn | 27:007e17df5ba0 | 160 | pc.printf("State %d|%d|%d|%d|%d\r\n", temp_error[0], temp_error[1], temp_error[2], temp_error[3], temp_error[4] ); |
andrewklmn | 27:007e17df5ba0 | 161 | 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 | 27:007e17df5ba0 | 162 | pc.printf("======================================="); |
andrewklmn | 29:5940a80717e4 | 163 | |
andrewklmn | 29:5940a80717e4 | 164 | __enable_irq(); |
andrewklmn | 29:5940a80717e4 | 165 | |
andrewklmn | 27:007e17df5ba0 | 166 | myled = 1; // turn the LED off |
andrewklmn | 27:007e17df5ba0 | 167 | }; |
andrewklmn | 27:007e17df5ba0 | 168 | |
andrewklmn | 31:0a516ceaec4d | 169 | |
andrewklmn | 27:007e17df5ba0 | 170 | |
hudakz | 10:4b88be251088 | 171 | |
hudakz | 0:ab218237069e | 172 | int main() { |
andrewklmn | 12:187e02ab447f | 173 | |
hudakz | 10:4b88be251088 | 174 | confSysClock(); //Configure system clock (72MHz HSE clock, 48MHz USB clock) |
andrewklmn | 26:750f21025bb9 | 175 | |
andrewklmn | 32:aebbfe391bbc | 176 | wd.Configure(5.0); |
andrewklmn | 32:aebbfe391bbc | 177 | |
andrewklmn | 26:750f21025bb9 | 178 | PinDetect pb(PA_11); |
andrewklmn | 23:33d6689834c6 | 179 | pb.mode(PullUp); |
andrewklmn | 26:750f21025bb9 | 180 | |
andrewklmn | 26:750f21025bb9 | 181 | // Delay for initial pullup to take effect |
andrewklmn | 26:750f21025bb9 | 182 | wait(.005); |
andrewklmn | 26:750f21025bb9 | 183 | |
andrewklmn | 26:750f21025bb9 | 184 | pb.attach_deasserted(&pb_hit_interrupt); |
andrewklmn | 26:750f21025bb9 | 185 | pb.attach_asserted(&pb_out_interrupt); |
andrewklmn | 26:750f21025bb9 | 186 | //pb.rise(&pb_out_interrupt); |
andrewklmn | 26:750f21025bb9 | 187 | pb.setSampleFrequency(); |
andrewklmn | 22:32beca745706 | 188 | |
andrewklmn | 12:187e02ab447f | 189 | pc.attach(&rxCallback, Serial::RxIrq); |
andrewklmn | 15:721546347507 | 190 | pc.baud(115200); |
andrewklmn | 32:aebbfe391bbc | 191 | pc.printf("\r\n\r\nWifi Heating system\r\n"); |
andrewklmn | 19:74f78a777ffa | 192 | |
andrewklmn | 27:007e17df5ba0 | 193 | |
andrewklmn | 34:09d8edcce624 | 194 | pomp_OFF = 0; |
andrewklmn | 34:09d8edcce624 | 195 | heater_OFF = 0; |
andrewklmn | 34:09d8edcce624 | 196 | wait(0.25); |
andrewklmn | 34:09d8edcce624 | 197 | pomp_OFF = 1; |
andrewklmn | 34:09d8edcce624 | 198 | heater_OFF = 1; |
andrewklmn | 34:09d8edcce624 | 199 | wait(0.25); |
andrewklmn | 34:09d8edcce624 | 200 | pomp_OFF = 0; |
andrewklmn | 34:09d8edcce624 | 201 | heater_OFF = 0; |
andrewklmn | 34:09d8edcce624 | 202 | wait(0.25); |
andrewklmn | 34:09d8edcce624 | 203 | pomp_OFF = 1; |
andrewklmn | 34:09d8edcce624 | 204 | heater_OFF = 1; |
andrewklmn | 34:09d8edcce624 | 205 | wait(0.25); |
andrewklmn | 34:09d8edcce624 | 206 | |
andrewklmn | 17:718e41e971f8 | 207 | |
andrewklmn | 27:007e17df5ba0 | 208 | queue.call( start_temp ); |
andrewklmn | 27:007e17df5ba0 | 209 | queue.call_every(100, at_command); |
andrewklmn | 27:007e17df5ba0 | 210 | queue.call_every(1000, check_temp); |
andrewklmn | 27:007e17df5ba0 | 211 | |
andrewklmn | 27:007e17df5ba0 | 212 | // Start queue |
andrewklmn | 27:007e17df5ba0 | 213 | queue.dispatch(); |
andrewklmn | 22:32beca745706 | 214 | }; |
hudakz | 8:f1432e9af6c8 | 215 |