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