Nikola Cvetković / Mbed 2 deprecated 13E044EMS_Env_Ch_DS1820

Prvi publish za klima komoru bez regulacije

Dependencies:   mbed Adafruit_GFX DS1820

main.cpp@1:aa2a0b18bdb1, 2022-06-29 (annotated)

Committer:
tzwell
Date:
Wed Jun 29 12:35:37 2022 +0000
Revision:
1:aa2a0b18bdb1
Parent:
0:d859694d093c 
Prvi commit za klima komoru bez regulacije

Who changed what in which revision?

UserRevisionLine numberNew contents of line
tzwell 0:d859694d093c 1 /*
tzwell 1:aa2a0b18bdb1 2 * Enviromental Chamber for PCB testing
tzwell 1:aa2a0b18bdb1 3 *
tzwell 1:aa2a0b18bdb1 4 * The Department of Electronics and Digital Systems
tzwell 1:aa2a0b18bdb1 5 * School of Electrical Engineering, University of Belgrade
tzwell 0:d859694d093c 6 *
tzwell 1:aa2a0b18bdb1 7 * May 2022.
tzwell 0:d859694d093c 8 *
tzwell 0:d859694d093c 9 */
tzwell 0:d859694d093c 10
tzwell 0:d859694d093c 11 #include "mbed.h"
tzwell 1:aa2a0b18bdb1 12 #include "Adafruit_GFX.h"
tzwell 1:aa2a0b18bdb1 13 #include "Adafruit_GFX_Config.h"
tzwell 1:aa2a0b18bdb1 14 #include "Adafruit_SSD1306.h"
tzwell 1:aa2a0b18bdb1 15 #include "DHT.h"
tzwell 1:aa2a0b18bdb1 16 #include "DS1820.h"
tzwell 1:aa2a0b18bdb1 17 #include <ctype.h>
tzwell 1:aa2a0b18bdb1 18
tzwell 1:aa2a0b18bdb1 19
tzwell 1:aa2a0b18bdb1 20 // A pin used for temperature sensor
tzwell 1:aa2a0b18bdb1 21 #define DATA_PIN A0
tzwell 1:aa2a0b18bdb1 22 #define MAX_PROBES 16
tzwell 1:aa2a0b18bdb1 23
tzwell 1:aa2a0b18bdb1 24 // I2C address, 60d or 0x3c:
tzwell 1:aa2a0b18bdb1 25 #define I2C_REAL_ADD 0x3c
tzwell 1:aa2a0b18bdb1 26 #define I2C_ADDRESS I2C_REAL_ADD << 1
tzwell 0:d859694d093c 27
tzwell 1:aa2a0b18bdb1 28 // Set OLED width and heigth [pixel]:
tzwell 1:aa2a0b18bdb1 29 #define OLED_WIDTH_PX 128
tzwell 1:aa2a0b18bdb1 30 #define OLED_HEIGHT_PX 64
tzwell 1:aa2a0b18bdb1 31
tzwell 1:aa2a0b18bdb1 32 // Multipliers of POT1 and POT2 for OLED rectangle position:
tzwell 1:aa2a0b18bdb1 33 #define WIDTH_SCALER 128
tzwell 1:aa2a0b18bdb1 34 #define HEIGHT_SCALER
tzwell 1:aa2a0b18bdb1 35
tzwell 1:aa2a0b18bdb1 36 // Min and max temp:
tzwell 1:aa2a0b18bdb1 37 #define TEMP_MIN 0
tzwell 1:aa2a0b18bdb1 38 #define TEMP_MAX 70
tzwell 1:aa2a0b18bdb1 39
tzwell 1:aa2a0b18bdb1 40 // UART2 defines
tzwell 1:aa2a0b18bdb1 41 #define COMMAND_LENGTH 3
tzwell 1:aa2a0b18bdb1 42
tzwell 1:aa2a0b18bdb1 43 // Time delay for acquisition
tzwell 1:aa2a0b18bdb1 44 #define TEMP_DELAY 1.0f
tzwell 1:aa2a0b18bdb1 45
tzwell 1:aa2a0b18bdb1 46 // Time delay for debounce [ms]
tzwell 1:aa2a0b18bdb1 47 #define DEBOUNCE_PER 30
tzwell 0:d859694d093c 48
tzwell 0:d859694d093c 49 /*
tzwell 1:aa2a0b18bdb1 50 * Globar variables
tzwell 0:d859694d093c 51 */
tzwell 0:d859694d093c 52
tzwell 1:aa2a0b18bdb1 53 // Timer for temperature acquisition
tzwell 1:aa2a0b18bdb1 54 Ticker temp_timer;
tzwell 0:d859694d093c 55
tzwell 1:aa2a0b18bdb1 56 // Buttons for relay control
tzwell 1:aa2a0b18bdb1 57 InterruptIn button_sw1 (PC_9);
tzwell 1:aa2a0b18bdb1 58 InterruptIn button_sw2 (PC_8);
tzwell 1:aa2a0b18bdb1 59
tzwell 1:aa2a0b18bdb1 60 // Relay selection signals
tzwell 1:aa2a0b18bdb1 61 DigitalOut relay_select1(PA_10); // D2
tzwell 1:aa2a0b18bdb1 62 DigitalOut relay_select2(PB_3); // D3
tzwell 1:aa2a0b18bdb1 63
tzwell 1:aa2a0b18bdb1 64 // DS1820 sensor object
tzwell 1:aa2a0b18bdb1 65 DS1820* probe[MAX_PROBES];
tzwell 1:aa2a0b18bdb1 66
tzwell 1:aa2a0b18bdb1 67 // Temperature variables
tzwell 1:aa2a0b18bdb1 68 float temp;
tzwell 1:aa2a0b18bdb1 69 int end_temp;
tzwell 1:aa2a0b18bdb1 70
tzwell 1:aa2a0b18bdb1 71 // DS1820 status and acquisition confirmation flag
tzwell 1:aa2a0b18bdb1 72 char data_acquired = 0;
tzwell 1:aa2a0b18bdb1 73
tzwell 1:aa2a0b18bdb1 74 // UART2 flags and variables
tzwell 1:aa2a0b18bdb1 75 char command_received = 0;
tzwell 1:aa2a0b18bdb1 76 char command_buffer[COMMAND_LENGTH] = {0};
tzwell 1:aa2a0b18bdb1 77 char incorrect_command = 0;
tzwell 1:aa2a0b18bdb1 78 char intro_printed = 0;
tzwell 1:aa2a0b18bdb1 79
tzwell 1:aa2a0b18bdb1 80 // Initialize UART for CLI
tzwell 1:aa2a0b18bdb1 81 Serial uart2(PA_2, PA_3);
tzwell 1:aa2a0b18bdb1 82
tzwell 1:aa2a0b18bdb1 83 // Initialize I2C for OLED display
tzwell 1:aa2a0b18bdb1 84 I2C i2c(PB_14,PB_13);
tzwell 1:aa2a0b18bdb1 85
tzwell 1:aa2a0b18bdb1 86 // Initialize OLED display:
tzwell 1:aa2a0b18bdb1 87 Adafruit_SSD1306_I2c myOled(i2c,PB_5,I2C_ADDRESS,OLED_HEIGHT_PX,OLED_WIDTH_PX);
tzwell 1:aa2a0b18bdb1 88
tzwell 1:aa2a0b18bdb1 89 // Declarations for interrupt routines
tzwell 1:aa2a0b18bdb1 90 void ISR_button_sw1 (void);
tzwell 1:aa2a0b18bdb1 91 void ISR_button_sw2 (void);
tzwell 1:aa2a0b18bdb1 92 void ISR_temp(void);
tzwell 1:aa2a0b18bdb1 93 void ISR_Rx(void);
tzwell 1:aa2a0b18bdb1 94
tzwell 1:aa2a0b18bdb1 95 // Declaration of display refresh function
tzwell 1:aa2a0b18bdb1 96 void refresh_display (void);
tzwell 1:aa2a0b18bdb1 97
tzwell 1:aa2a0b18bdb1 98 // Declaration of message parsing function
tzwell 1:aa2a0b18bdb1 99 void parse_message (void);
tzwell 1:aa2a0b18bdb1 100
tzwell 0:d859694d093c 101 int main()
tzwell 0:d859694d093c 102 {
tzwell 1:aa2a0b18bdb1 103 char cmd = 0;
tzwell 1:aa2a0b18bdb1 104 int ref_temp = 0;
tzwell 0:d859694d093c 105
tzwell 1:aa2a0b18bdb1 106 // Initialize OLED:
tzwell 1:aa2a0b18bdb1 107 myOled.begin();
tzwell 1:aa2a0b18bdb1 108
tzwell 1:aa2a0b18bdb1 109 // Set ISRs for buttons
tzwell 1:aa2a0b18bdb1 110 button_sw1.fall(&ISR_button_sw1);
tzwell 1:aa2a0b18bdb1 111 button_sw2.fall(&ISR_button_sw2);
tzwell 0:d859694d093c 112
tzwell 1:aa2a0b18bdb1 113 // Initialize probes
tzwell 1:aa2a0b18bdb1 114 int num_devices = 0;
tzwell 1:aa2a0b18bdb1 115 while(DS1820::unassignedProbe(DATA_PIN)) {
tzwell 1:aa2a0b18bdb1 116 probe[num_devices] = new DS1820(DATA_PIN);
tzwell 1:aa2a0b18bdb1 117 num_devices++;
tzwell 1:aa2a0b18bdb1 118 if (num_devices == MAX_PROBES)
tzwell 1:aa2a0b18bdb1 119 break;
tzwell 1:aa2a0b18bdb1 120 }
tzwell 1:aa2a0b18bdb1 121
tzwell 1:aa2a0b18bdb1 122 printf("Found %d device(s)\r\n\n", num_devices);
tzwell 1:aa2a0b18bdb1 123
tzwell 1:aa2a0b18bdb1 124 printf("Dobrodosli u Pajinu i Cveletovu komoru!\n\r");
tzwell 1:aa2a0b18bdb1 125 printf("Spremite se jer polecemo!!1!\n\r");
tzwell 1:aa2a0b18bdb1 126
tzwell 0:d859694d093c 127 while(true)
tzwell 0:d859694d093c 128 {
tzwell 1:aa2a0b18bdb1 129 if (!intro_printed)
tzwell 1:aa2a0b18bdb1 130 {
tzwell 1:aa2a0b18bdb1 131 printf("Molimo, unesite 's' za start: \n\r");
tzwell 1:aa2a0b18bdb1 132 scanf("%c", &cmd);
tzwell 1:aa2a0b18bdb1 133 intro_printed = 1;
tzwell 1:aa2a0b18bdb1 134 }
tzwell 1:aa2a0b18bdb1 135 if (cmd == 's')
tzwell 1:aa2a0b18bdb1 136 {
tzwell 1:aa2a0b18bdb1 137 printf("Molimo, unesite zeljenu temperaturu: \n\r");
tzwell 1:aa2a0b18bdb1 138 scanf("%d", &ref_temp);
tzwell 1:aa2a0b18bdb1 139 if (ref_temp > TEMP_MIN && ref_temp < TEMP_MAX)
tzwell 1:aa2a0b18bdb1 140 {
tzwell 1:aa2a0b18bdb1 141 temp_timer.attach(&ISR_temp, TEMP_DELAY);
tzwell 1:aa2a0b18bdb1 142 }
tzwell 1:aa2a0b18bdb1 143 cmd = 0;
tzwell 1:aa2a0b18bdb1 144 }
tzwell 1:aa2a0b18bdb1 145
tzwell 1:aa2a0b18bdb1 146 if (data_acquired)
tzwell 1:aa2a0b18bdb1 147 {
tzwell 1:aa2a0b18bdb1 148 refresh_display();
tzwell 1:aa2a0b18bdb1 149 data_acquired = 0;
tzwell 1:aa2a0b18bdb1 150 }
tzwell 0:d859694d093c 151 }
tzwell 0:d859694d093c 152 }
tzwell 0:d859694d093c 153
tzwell 1:aa2a0b18bdb1 154 // Display refresh function definition
tzwell 1:aa2a0b18bdb1 155 void refresh_display (void)
tzwell 1:aa2a0b18bdb1 156 {
tzwell 1:aa2a0b18bdb1 157 myOled.clearDisplay();
tzwell 1:aa2a0b18bdb1 158 // myOled.printf("It is %3.1foC\r\n", probe.temperature());
tzwell 1:aa2a0b18bdb1 159 myOled.display();
tzwell 1:aa2a0b18bdb1 160 // printf("It is %3.1foC\r\n", probe.temperature());
tzwell 1:aa2a0b18bdb1 161 }
tzwell 0:d859694d093c 162
tzwell 1:aa2a0b18bdb1 163 // Definition of message parsing function
tzwell 1:aa2a0b18bdb1 164 void parse_message (void)
tzwell 1:aa2a0b18bdb1 165 {
tzwell 1:aa2a0b18bdb1 166 if (command_buffer[0] == 's')
tzwell 1:aa2a0b18bdb1 167 {
tzwell 1:aa2a0b18bdb1 168 if (isdigit(command_buffer[1]) && isdigit(command_buffer[2]))
tzwell 1:aa2a0b18bdb1 169 {
tzwell 1:aa2a0b18bdb1 170 end_temp = (command_buffer[1] - 48) * 10 + (command_buffer[2] - 48);
tzwell 1:aa2a0b18bdb1 171 }
tzwell 1:aa2a0b18bdb1 172 else
tzwell 1:aa2a0b18bdb1 173 {
tzwell 1:aa2a0b18bdb1 174 incorrect_command = 1;
tzwell 1:aa2a0b18bdb1 175 }
tzwell 1:aa2a0b18bdb1 176 }
tzwell 1:aa2a0b18bdb1 177 else if (command_buffer[0] == 'e')
tzwell 1:aa2a0b18bdb1 178 {
tzwell 1:aa2a0b18bdb1 179
tzwell 1:aa2a0b18bdb1 180 }
tzwell 1:aa2a0b18bdb1 181 else
tzwell 1:aa2a0b18bdb1 182 {
tzwell 1:aa2a0b18bdb1 183 incorrect_command = 1;
tzwell 1:aa2a0b18bdb1 184 }
tzwell 1:aa2a0b18bdb1 185 }
tzwell 1:aa2a0b18bdb1 186
tzwell 1:aa2a0b18bdb1 187 // ISR for temperature acquisition
tzwell 1:aa2a0b18bdb1 188 void ISR_temp (void)
tzwell 1:aa2a0b18bdb1 189 {
tzwell 1:aa2a0b18bdb1 190 printf("t\n");
tzwell 1:aa2a0b18bdb1 191 probe[0]->convertTemperature(true, DS1820::all_devices);
tzwell 1:aa2a0b18bdb1 192 printf("It is %3.1foC\r\n", probe[0]->temperature());
tzwell 1:aa2a0b18bdb1 193 data_acquired = 1;
tzwell 1:aa2a0b18bdb1 194 }
tzwell 1:aa2a0b18bdb1 195
tzwell 1:aa2a0b18bdb1 196 // ISR for Relay 1 control
tzwell 1:aa2a0b18bdb1 197 void ISR_button_sw1 (void)
tzwell 1:aa2a0b18bdb1 198 {
tzwell 1:aa2a0b18bdb1 199 wait_ms(DEBOUNCE_PER);
tzwell 1:aa2a0b18bdb1 200
tzwell 1:aa2a0b18bdb1 201 if (!button_sw1)
tzwell 1:aa2a0b18bdb1 202 {
tzwell 1:aa2a0b18bdb1 203 relay_select1 = !relay_select1;
tzwell 1:aa2a0b18bdb1 204 }
tzwell 1:aa2a0b18bdb1 205 }
tzwell 1:aa2a0b18bdb1 206
tzwell 1:aa2a0b18bdb1 207 // ISR for Relay 2 control
tzwell 1:aa2a0b18bdb1 208 void ISR_button_sw2 (void)
tzwell 1:aa2a0b18bdb1 209 {
tzwell 1:aa2a0b18bdb1 210 wait_ms(DEBOUNCE_PER);
tzwell 1:aa2a0b18bdb1 211
tzwell 1:aa2a0b18bdb1 212 if (!button_sw2)
tzwell 1:aa2a0b18bdb1 213 {
tzwell 1:aa2a0b18bdb1 214 relay_select2 = !relay_select2;
tzwell 1:aa2a0b18bdb1 215 }
tzwell 1:aa2a0b18bdb1 216 }