Andrew Reed / Mbed OS CITY1082-i2c_master

Initial

Dependencies:   TextLCD2

main.cpp@2:3dabedbecf5e, 2020-02-04 (annotated)

Committer:
reedas
Date:
Tue Feb 04 09:30:49 2020 +0000
Revision:
2:3dabedbecf5e
Parent:
0:e9613d017b5e
Child:
3:6bdfc9e9afc5
Arduino slave update v3

Who changed what in which revision?

UserRevisionLine numberNew contents of line
reedas 0:e9613d017b5e 1 /* mbed Microcontroller Library
reedas 0:e9613d017b5e 2 * Copyright (c) 2019 ARM Limited
reedas 0:e9613d017b5e 3 * SPDX-License-Identifier: Apache-2.0
reedas 0:e9613d017b5e 4 *
reedas 0:e9613d017b5e 5 * I2C Master code for Cypress PSoC 6 communicating with Arduino
reedas 0:e9613d017b5e 6 * =============================================================
reedas 0:e9613d017b5e 7 *
reedas 0:e9613d017b5e 8 * This module sets the PSoC 6 up as the master on the I2C bus
reedas 0:e9613d017b5e 9 * and periodically collects a set of environment data from an arduino
reedas 0:e9613d017b5e 10 * running the code below:
reedas 2:3dabedbecf5e 11 */
reedas 2:3dabedbecf5e 12 //
reedas 2:3dabedbecf5e 13 // //I2C SLAVE CODE
reedas 2:3dabedbecf5e 14 // //I2C Communication between Two Arduino
reedas 2:3dabedbecf5e 15 // //CircuitDigest
reedas 2:3dabedbecf5e 16 // //Pramoth.T
reedas 2:3dabedbecf5e 17 //
reedas 2:3dabedbecf5e 18 // #include<Wire.h> //Library for I2C Communication // // functions
reedas 2:3dabedbecf5e 19 // #include <Adafruit_Sensor.h>
reedas 2:3dabedbecf5e 20 // #include <DHT.h>
reedas 2:3dabedbecf5e 21 // #include <DHT_U.h>
reedas 2:3dabedbecf5e 22 //
reedas 2:3dabedbecf5e 23 // #define DHTPIN 4 // Digital pin connected to the DHT sensor
reedas 2:3dabedbecf5e 24 // // Feather HUZZAH ESP8266 note: use pins 3, 4, 5, 12, 13 or 14 --
reedas 2:3dabedbecf5e 25 // // Pin 15 can work but DHT must be disconnected during program upload.
reedas 2:3dabedbecf5e 26 //
reedas 2:3dabedbecf5e 27 // // Uncomment the type of sensor in use:
reedas 2:3dabedbecf5e 28 // #define DHTTYPE DHT11 // DHT 11
reedas 2:3dabedbecf5e 29 // //#define DHTTYPE DHT22 // DHT 22 (AM2302)
reedas 2:3dabedbecf5e 30 // //#define DHTTYPE DHT21 // DHT 21 (AM2301)
reedas 2:3dabedbecf5e 31 //
reedas 2:3dabedbecf5e 32 // // See guide for details on sensor wiring and usage:
reedas 2:3dabedbecf5e 33 // // https://learn.adafruit.com/dht/overview
reedas 2:3dabedbecf5e 34 //
reedas 2:3dabedbecf5e 35 // DHT_Unified dht(DHTPIN, DHTTYPE);
reedas 2:3dabedbecf5e 36 //
reedas 2:3dabedbecf5e 37 // uint32_t delayMS;
reedas 2:3dabedbecf5e 38 // #include <PreciseLM35.h>
reedas 2:3dabedbecf5e 39 // #define TESTING false
reedas 2:3dabedbecf5e 40 //
reedas 2:3dabedbecf5e 41 // const int pinLM35 = A2;
reedas 2:3dabedbecf5e 42 // PreciseLM35 lm35(pinLM35, DEFAULT);
reedas 2:3dabedbecf5e 43 //
reedas 2:3dabedbecf5e 44 //
reedas 2:3dabedbecf5e 45 // unsigned char txDataPacket[10];
reedas 2:3dabedbecf5e 46 // unsigned char rxCommandPacket[8];
reedas 2:3dabedbecf5e 47 // unsigned char rxCommandNum;
reedas 2:3dabedbecf5e 48 // unsigned char rxCommand = 0;
reedas 2:3dabedbecf5e 49 // bool SW1Pressed = 0;
reedas 2:3dabedbecf5e 50 // bool SW2Pressed = 0;
reedas 2:3dabedbecf5e 51 //
reedas 2:3dabedbecf5e 52 // int blueLed = 13;
reedas 2:3dabedbecf5e 53 // int SW1Pin = 2;
reedas 2:3dabedbecf5e 54 // int SW2Pin = 3;
reedas 2:3dabedbecf5e 55 //
reedas 2:3dabedbecf5e 56 // void setup()
reedas 2:3dabedbecf5e 57 //
reedas 2:3dabedbecf5e 58 // {
reedas 2:3dabedbecf5e 59 // pinMode(SW1Pin, INPUT);
reedas 2:3dabedbecf5e 60 // pinMode(SW2Pin, INPUT);
reedas 2:3dabedbecf5e 61 // pinMode(blueLed, OUTPUT);
reedas 2:3dabedbecf5e 62 // dht.begin();
reedas 2:3dabedbecf5e 63 // sensor_t sensor;
reedas 2:3dabedbecf5e 64 // dht.temperature().getSensor(&sensor);
reedas 2:3dabedbecf5e 65 // dht.humidity().getSensor(&sensor);
reedas 2:3dabedbecf5e 66 // delayMS = sensor.min_delay / 1000;
reedas 2:3dabedbecf5e 67 // Serial.begin(115200); //Begins Serial Communication at // 9600 baud rate
reedas 2:3dabedbecf5e 68 // Wire.begin(8); //Begins I2C communication with // // Slave Address as 8 at pin (A4,A5)
reedas 2:3dabedbecf5e 69 // Wire.onReceive(receiveEvent); //Function call when Slave receives // value from master
reedas 2:3dabedbecf5e 70 // Wire.onRequest(requestEvent); //Function call when Master request // value from Slave
reedas 2:3dabedbecf5e 71 // }
reedas 2:3dabedbecf5e 72 //
reedas 2:3dabedbecf5e 73 // void loop(void)
reedas 2:3dabedbecf5e 74 // {
reedas 2:3dabedbecf5e 75 // unsigned char SW1Debounced;
reedas 2:3dabedbecf5e 76 // unsigned char SW2Debounced;
reedas 2:3dabedbecf5e 77 // int temperature = 20;
reedas 2:3dabedbecf5e 78 // while (1) {
reedas 2:3dabedbecf5e 79 // if (rxCommandNum || TESTING) {
reedas 2:3dabedbecf5e 80 //
reedas 2:3dabedbecf5e 81 //
reedas 2:3dabedbecf5e 82 // Serial.println("Slave Received Command From Master:"); //Prints in // // Serial Monitor
reedas 2:3dabedbecf5e 83 // Serial.print(rxCommand);
reedas 2:3dabedbecf5e 84 // Serial.print(" - ");
reedas 2:3dabedbecf5e 85 // Serial.println(rxCommandNum);
reedas 2:3dabedbecf5e 86 // for (int i = 0; i < 8; i++) {
reedas 2:3dabedbecf5e 87 // Serial.print( rxCommandPacket[i] );
reedas 2:3dabedbecf5e 88 // Serial.print( " - " );
reedas 2:3dabedbecf5e 89 // }
reedas 2:3dabedbecf5e 90 // Serial.println(" ");
reedas 2:3dabedbecf5e 91 // for (int i = 0; i < 10; i++) {
reedas 2:3dabedbecf5e 92 // Serial.print( txDataPacket[i] );
reedas 2:3dabedbecf5e 93 // Serial.print( " - " );
reedas 2:3dabedbecf5e 94 // }
reedas 2:3dabedbecf5e 95 // Serial.println(" ");
reedas 2:3dabedbecf5e 96 // rxCommandNum = 0;
reedas 2:3dabedbecf5e 97 // }
reedas 2:3dabedbecf5e 98 // sensors_event_t event;
reedas 2:3dabedbecf5e 99 // int potvalue = map( analogRead(A0), 0, 1023, 0, 100); // // Reads analog value from POT (0-5V)
reedas 2:3dabedbecf5e 100 // int lightlevel = map(analogRead(A1), 0, 1023, 0, 100); // // Ambient light level
reedas 2:3dabedbecf5e 101 // int humidityInt = 101;
reedas 2:3dabedbecf5e 102 // temperature = ((int)((lm35.readCelsius()) * 10)); // // // Ambient Temperature
reedas 2:3dabedbecf5e 103 // dht.humidity().getEvent(&event);
reedas 2:3dabedbecf5e 104 // if (isnan(event.relative_humidity)) {
reedas 2:3dabedbecf5e 105 // Serial.println(F("Error reading humidity!"));
reedas 2:3dabedbecf5e 106 // }
reedas 2:3dabedbecf5e 107 // else {
reedas 2:3dabedbecf5e 108 // humidityInt = (int)event.relative_humidity;
reedas 2:3dabedbecf5e 109 // Serial.print(F("Humidity: "));
reedas 2:3dabedbecf5e 110 // Serial.print(humidityInt);
reedas 2:3dabedbecf5e 111 // Serial.println(F("%"));
reedas 2:3dabedbecf5e 112 // }
reedas 2:3dabedbecf5e 113 // txDataPacket[0] = potvalue;
reedas 2:3dabedbecf5e 114 // txDataPacket[1] = 0; // or potvalue >> 8;
reedas 2:3dabedbecf5e 115 // txDataPacket[2] = lightlevel;
reedas 2:3dabedbecf5e 116 // txDataPacket[3] = 0; // or lightlevel >> 8;
reedas 2:3dabedbecf5e 117 // txDataPacket[4] = temperature;
reedas 2:3dabedbecf5e 118 // txDataPacket[5] = temperature >> 8;
reedas 2:3dabedbecf5e 119 // SW1Debounced = (SW1Debounced << 1) | digitalRead(SW1Pin);
reedas 2:3dabedbecf5e 120 // if (SW1Debounced == 0) SW1Pressed = 1;
reedas 2:3dabedbecf5e 121 // SW2Debounced = (SW2Debounced << 1) | digitalRead(SW2Pin);
reedas 2:3dabedbecf5e 122 // if (SW2Debounced == 0) SW2Pressed = 1;
reedas 2:3dabedbecf5e 123 // txDataPacket[6] = SW1Pressed;
reedas 2:3dabedbecf5e 124 // txDataPacket[7] = SW2Pressed;
reedas 2:3dabedbecf5e 125 // txDataPacket[8] = humidityInt;
reedas 2:3dabedbecf5e 126 // txDataPacket[9] = 0;
reedas 2:3dabedbecf5e 127 // digitalWrite(blueLed, rxCommandPacket[1] & 1);
reedas 2:3dabedbecf5e 128 // delay(delayMS);
reedas 2:3dabedbecf5e 129 // if (TESTING) delay(2000);
reedas 2:3dabedbecf5e 130 // }
reedas 2:3dabedbecf5e 131 // }
reedas 2:3dabedbecf5e 132 //
reedas 2:3dabedbecf5e 133 // void receiveEvent (int howMany) //This Function is called // when Slave receives value from master
reedas 2:3dabedbecf5e 134 // { for (int i = 0; i < howMany; i++) {
reedas 2:3dabedbecf5e 135 // rxCommandPacket[i] = Wire.read(); //Used to read value // received from master and store in variable SlaveReceived
reedas 2:3dabedbecf5e 136 // }
reedas 2:3dabedbecf5e 137 // rxCommandNum = howMany;
reedas 2:3dabedbecf5e 138 // rxCommand = rxCommandPacket[0];
reedas 2:3dabedbecf5e 139 // } *
reedas 0:e9613d017b5e 140
reedas 0:e9613d017b5e 141 #include "mbed.h"
reedas 0:e9613d017b5e 142 #include "platform/mbed_thread.h"
reedas 0:e9613d017b5e 143 #include "TextLCD.h"
reedas 0:e9613d017b5e 144 #include "GUI.h"
reedas 0:e9613d017b5e 145 #include "cy8ckit_028_tft.h"
reedas 0:e9613d017b5e 146
reedas 0:e9613d017b5e 147
reedas 0:e9613d017b5e 148 #define UNO_CMD (0x10) // Command byte to Uno
reedas 0:e9613d017b5e 149 #define UNO_CMD_CONF (0x01) // Configuration data
reedas 0:e9613d017b5e 150 #define UNO_ADDR (0x10) // LM75 address
reedas 0:e9613d017b5e 151
reedas 0:e9613d017b5e 152 //I2C i2c(P8_1, P8_0);
reedas 0:e9613d017b5e 153 I2C i2c(I2C_SDA, I2C_SCL);
reedas 0:e9613d017b5e 154 TextLCD_I2C lcd(&i2c, 0x7e, TextLCD::LCD16x2 /*, TextLCD::WS0010*/); // I2C exp: I2C bus, PCF8574 Slaveaddress, LCD Type
reedas 2:3dabedbecf5e 155 TextLCD_I2C lcd2(&i2c, 0x4e, TextLCD::LCD16x2 /*, TextLCD::WS0010*/); // I2C exp: I2C bus, PCF8574 Slaveaddress, LCD Type
reedas 0:e9613d017b5e 156 DigitalOut myled(LED1);
reedas 0:e9613d017b5e 157
reedas 0:e9613d017b5e 158 //Serial pc(SERIAL_TX, SERIAL_RX);
reedas 0:e9613d017b5e 159 Serial pc(USBTX, USBRX);
reedas 0:e9613d017b5e 160
reedas 0:e9613d017b5e 161 volatile char TempCelsiusDisplay[] = "+abc.d C";
reedas 0:e9613d017b5e 162
reedas 0:e9613d017b5e 163 int main()
reedas 0:e9613d017b5e 164 {
reedas 0:e9613d017b5e 165
reedas 0:e9613d017b5e 166 char data_write[8];
reedas 2:3dabedbecf5e 167 char data_read[10];
reedas 0:e9613d017b5e 168 char buffer[120];
reedas 0:e9613d017b5e 169
reedas 0:e9613d017b5e 170 /* Initialise display */
reedas 0:e9613d017b5e 171 GUI_Init();
reedas 0:e9613d017b5e 172 GUI_Clear();
reedas 0:e9613d017b5e 173
reedas 0:e9613d017b5e 174 lcd.cls();
reedas 0:e9613d017b5e 175 lcd.setBacklight(TextLCD::LightOn);
reedas 0:e9613d017b5e 176 lcd.setCursor(TextLCD::CurOff_BlkOff);
reedas 2:3dabedbecf5e 177 lcd2.cls();
reedas 2:3dabedbecf5e 178 lcd2.setBacklight(TextLCD::LightOn);
reedas 2:3dabedbecf5e 179 lcd2.setCursor(TextLCD::CurOff_BlkOff);
reedas 0:e9613d017b5e 180
reedas 0:e9613d017b5e 181 /* Configure the Temperature sensor device STLM75:
reedas 0:e9613d017b5e 182 - Thermostat mode Interrupt
reedas 0:e9613d017b5e 183 - Fault tolerance: 0
reedas 0:e9613d017b5e 184 */
reedas 0:e9613d017b5e 185 data_write[0] = UNO_CMD;
reedas 0:e9613d017b5e 186 data_write[1] = 0x08;
reedas 0:e9613d017b5e 187
reedas 0:e9613d017b5e 188 GUI_SetFont(GUI_FONT_10_1);
reedas 0:e9613d017b5e 189 GUI_SetTextAlign(GUI_TA_LEFT);
reedas 0:e9613d017b5e 190 int status = i2c.write(UNO_ADDR, data_write, 2, 0);
reedas 0:e9613d017b5e 191 if (status != 0) { // Error
reedas 0:e9613d017b5e 192 GUI_DispStringAt("I2C Error", 0, 220);
reedas 0:e9613d017b5e 193 while (1) {
reedas 0:e9613d017b5e 194 myled = !myled;
reedas 0:e9613d017b5e 195 ThisThread::sleep_for(200);
reedas 0:e9613d017b5e 196 }
reedas 0:e9613d017b5e 197 }
reedas 0:e9613d017b5e 198 GUI_DispStringAt("I2C Connected", 0, 220);
reedas 0:e9613d017b5e 199 GUI_SetFont(GUI_FONT_20B_1);
reedas 0:e9613d017b5e 200 GUI_DispStringAt("Data from Arduino", 0, 0);
reedas 0:e9613d017b5e 201
reedas 0:e9613d017b5e 202 while (1) {
reedas 0:e9613d017b5e 203 // Read Arduino data
reedas 0:e9613d017b5e 204 data_write[0] = UNO_CMD;
reedas 0:e9613d017b5e 205 i2c.write(UNO_ADDR, data_write, 2, 1); // no stop
reedas 2:3dabedbecf5e 206 if (i2c.read(UNO_ADDR, data_read, 10, 0)) {
reedas 0:e9613d017b5e 207 GUI_SetFont(GUI_FONT_10_1);
reedas 0:e9613d017b5e 208 GUI_DispStringAt("I2C receive error ", 0, 220);
reedas 0:e9613d017b5e 209 } else {
reedas 0:e9613d017b5e 210 GUI_SetFont(GUI_FONT_10_1);
reedas 0:e9613d017b5e 211 GUI_DispStringAt("I2C Data Received ", 0, 220);
reedas 0:e9613d017b5e 212
reedas 0:e9613d017b5e 213 // read eight bytes
reedas 0:e9613d017b5e 214 // pot value - msb-0, lsb-1
reedas 0:e9613d017b5e 215 // light level - msb-2, lsb-3
reedas 0:e9613d017b5e 216 // temperature - msb-4, lsb-5
reedas 0:e9613d017b5e 217 // sw1 state - 6 - 0-255 based on how long pressed
reedas 0:e9613d017b5e 218 // sw2 state - 7 - 0-255 based on how long pressed
reedas 2:3dabedbecf5e 219 // Humidity - msb-9, lsb-8
reedas 0:e9613d017b5e 220
reedas 0:e9613d017b5e 221 // Calculate temperature value in Celcius
reedas 0:e9613d017b5e 222 int tempval = (int)((int)data_read[5] << 8) | data_read[4];
reedas 0:e9613d017b5e 223 if (tempval < 0) {
reedas 0:e9613d017b5e 224 TempCelsiusDisplay[0] = '-';
reedas 0:e9613d017b5e 225 } else {
reedas 0:e9613d017b5e 226 TempCelsiusDisplay[0] = '+';
reedas 0:e9613d017b5e 227 }
reedas 0:e9613d017b5e 228
reedas 0:e9613d017b5e 229 // Integer part
reedas 0:e9613d017b5e 230 TempCelsiusDisplay[1] = (tempval / 1000) + 0x30;
reedas 0:e9613d017b5e 231 TempCelsiusDisplay[2] = ((tempval % 1000) / 100) + 0x30;
reedas 0:e9613d017b5e 232 TempCelsiusDisplay[3] = ((tempval % 1000) % 100 / 10) + 0x30;
reedas 0:e9613d017b5e 233 TempCelsiusDisplay[5] = ((tempval % 1000) % 100 % 10) + 0x30;
reedas 0:e9613d017b5e 234
reedas 0:e9613d017b5e 235 //Switches
reedas 0:e9613d017b5e 236
reedas 0:e9613d017b5e 237 unsigned char SW1State = data_read[6];
reedas 0:e9613d017b5e 238 unsigned char SW2State = data_read[7];
reedas 0:e9613d017b5e 239
reedas 0:e9613d017b5e 240 //light level
reedas 0:e9613d017b5e 241 int lightDisplay = (int)((int)data_read[3] << 8) | data_read[2];
reedas 0:e9613d017b5e 242
reedas 0:e9613d017b5e 243 //potentiometer value
reedas 0:e9613d017b5e 244 int potValue = (int)((int)data_read[1] << 8) | data_read[0];
reedas 2:3dabedbecf5e 245
reedas 2:3dabedbecf5e 246 int humidity = (int)((int)data_read[9] << 8) | data_read[8];
reedas 0:e9613d017b5e 247
reedas 0:e9613d017b5e 248 // Display result
reedas 2:3dabedbecf5e 249 pc.printf("temp = %s, Light is %3d%%, Hum is %3d%%%s%s\n", TempCelsiusDisplay, lightDisplay, humidity, SW1State?", SW1 pressed":"", SW2State?", SW2 pressed":"");
reedas 0:e9613d017b5e 250
reedas 0:e9613d017b5e 251 lcd.locate(0,0);
reedas 2:3dabedbecf5e 252 lcd.printf("Temp Lght Hum 12");
reedas 0:e9613d017b5e 253 lcd.locate(0,1);
reedas 2:3dabedbecf5e 254 lcd.printf(" %2dC %2d%c %2d%c %s%s", tempval/10, lightDisplay, 0x25, humidity, 0x25, SW1State?"1":"_", SW2State?"2":"_");
reedas 2:3dabedbecf5e 255 lcd2.locate(0,0);
reedas 2:3dabedbecf5e 256 lcd2.printf("Temp Lght Pot 12");
reedas 2:3dabedbecf5e 257 lcd2.locate(0,1);
reedas 2:3dabedbecf5e 258 lcd2.printf(" %2dC %2d%c %2d%c %s%s", tempval/10, lightDisplay, 0x25, potValue, 0x25, SW1State?"1":"_", SW2State?"2":"_");
reedas 0:e9613d017b5e 259
reedas 2:3dabedbecf5e 260 sprintf(buffer,"Temp is %2dC \nLight Level is %2d%c \nPot Value is %2d%c \nHumidity is %2d%c \n%s \n%s ", tempval/10, lightDisplay, 0x25, potValue, 0x25, humidity, 0x25, SW1State?"SW1 Pressed ":"SW1 Released", SW2State?"SW2 Pressed ":"SW2 Released");
reedas 0:e9613d017b5e 261 GUI_SetFont(GUI_FONT_20_1);
reedas 0:e9613d017b5e 262 GUI_DispStringAt(buffer, 0, 40);
reedas 0:e9613d017b5e 263 }
reedas 0:e9613d017b5e 264 myled = !myled;
reedas 2:3dabedbecf5e 265 data_write[1] = data_write[1] ^ 0x01;
reedas 2:3dabedbecf5e 266 thread_sleep_for(250);
reedas 0:e9613d017b5e 267 }
reedas 0:e9613d017b5e 268
reedas 0:e9613d017b5e 269 }
reedas 0:e9613d017b5e 270