Andrew Reed
Initial
Diff: main.cpp
- Revision:
- 0:e9613d017b5e
- Child:
- 2:3dabedbecf5e
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Tue Jan 14 11:29:18 2020 +0000
@@ -0,0 +1,225 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2019 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * I2C Master code for Cypress PSoC 6 communicating with Arduino
+ * =============================================================
+ *
+ * This module sets the PSoC 6 up as the master on the I2C bus
+ * and periodically collects a set of environment data from an arduino
+ * running the code below:
+ *
+ * //I2C SLAVE CODE
+ * //I2C Communication between Two Arduino
+ * //CircuitDigest
+ * //Pramoth.T
+ *
+ * #include<Wire.h> //Library for I2C Communication functions
+ *
+ * #include <PreciseLM35.h>
+ *
+ * const int pinLM35 = A2;
+ * PreciseLM35 lm35(pinLM35, DEFAULT);
+ *
+ *
+ * unsigned char txDataPacket[8];
+ * unsigned char rxCommandPacket[8];
+ * unsigned char rxCommandNum;
+ * unsigned char rxCommand = 0;
+ * bool SW1Pressed = 0;
+ * bool SW2Pressed = 0;
+ *
+ *
+ * int SW1Pin = 2;
+ * int SW2Pin = 3;
+ *
+ * void setup()
+ *
+ * {
+ * pinMode(SW1Pin, INPUT);
+ * pinMode(SW2Pin, INPUT);
+ * Serial.begin(9600); //Begins Serial Communication at 9600 baud rate
+ * Wire.begin(8); //Begins I2C communication with Slave Address as 8 at pin (A4,A5)
+ * Wire.onReceive(receiveEvent); //Function call when Slave receives value from master
+ * Wire.onRequest(requestEvent); //Function call when Master request value from Slave
+ * }
+ *
+ * void loop(void)
+ * {
+ * unsigned char SW1Debounced;
+ * unsigned char SW2Debounced;
+ *
+ * if (rxCommandNum) {
+ *
+ *
+ * Serial.println("Slave Received Command From Master:"); //Prints in Serial Monitor
+ * Serial.print(rxCommand);
+ * Serial.print(" - ");
+ * Serial.println(rxCommandNum);
+ * for (int i = 0; i < 8; i++) {
+ * Serial.print( rxCommandPacket[i] );
+ * Serial.print( " - " );
+ * }
+ * Serial.println(" ");
+ * for (int i = 0; i < 8; i++) {
+ * Serial.print( txDataPacket[i] );
+ * Serial.print( " - " );
+ * }
+ * Serial.println(" ");
+ * rxCommandNum = 0;
+ * }
+ * int potvalue = map( analogRead(A0), 0, 1023, 0, 100); // Reads analog value from POT (0-5V)
+ * int lightlevel = map(analogRead(A1), 0, 1023, 0, 100); // Ambient light level
+ * int temperature = (int)((lm35.readCelsius()) * 10); // Ambient Temperature
+ * txDataPacket[0] = potvalue;
+ * txDataPacket[1] = 0; // or potvalue >> 8;
+ * txDataPacket[2] = lightlevel;
+ * txDataPacket[3] = 0; // or lightlevel >> 8;
+ * txDataPacket[4] = temperature;
+ * txDataPacket[5] = temperature >> 8;
+ * SW1Debounced = (SW1Debounced << 1) | digitalRead(SW1Pin);
+ * if (SW1Debounced == 0) SW1Pressed = 1;
+ * SW2Debounced = (SW2Debounced << 1) | digitalRead(SW2Pin);
+ * if (SW2Debounced == 0) SW2Pressed = 1;
+ * txDataPacket[6] = SW1Pressed;
+ * txDataPacket[7] = SW2Pressed;
+ *
+ * // delay(500);
+ * }
+ *
+ * void receiveEvent (int howMany) //This Function is called when Slave receives value from master
+ * { for (int i = 0; i < howMany; i++) {
+ * rxCommandPacket[i] = Wire.read(); //Used to read value received from master and store in variable SlaveReceived
+ * }
+ * rxCommandNum = howMany;
+ * rxCommand = rxCommandPacket[0];
+ * }
+ *
+ * void requestEvent() //This Function is called when Master wants data from slave
+ * {
+ * Wire.write(txDataPacket, 8); // sends eight bytes of data to master
+ * SW1Pressed = 0; // Clear key presses on send to master
+ * SW2Pressed = 0;
+ * }
+ *
+ */
+
+#include "mbed.h"
+#include "platform/mbed_thread.h"
+#include "TextLCD.h"
+#include "GUI.h"
+#include "cy8ckit_028_tft.h"
+
+
+#define UNO_CMD (0x10) // Command byte to Uno
+#define UNO_CMD_CONF (0x01) // Configuration data
+#define UNO_ADDR (0x10) // LM75 address
+
+//I2C i2c(P8_1, P8_0);
+I2C i2c(I2C_SDA, I2C_SCL);
+TextLCD_I2C lcd(&i2c, 0x7e, TextLCD::LCD16x2 /*, TextLCD::WS0010*/); // I2C exp: I2C bus, PCF8574 Slaveaddress, LCD Type
+//TextLCD_I2C lcd(&i2c, 0x4e, TextLCD::LCD16x2 /*, TextLCD::WS0010*/); // I2C exp: I2C bus, PCF8574 Slaveaddress, LCD Type
+DigitalOut myled(LED1);
+
+//Serial pc(SERIAL_TX, SERIAL_RX);
+Serial pc(USBTX, USBRX);
+
+volatile char TempCelsiusDisplay[] = "+abc.d C";
+
+int main()
+{
+
+ char data_write[8];
+ char data_read[8];
+ char buffer[120];
+
+ /* Initialise display */
+ GUI_Init();
+ GUI_Clear();
+
+ lcd.cls();
+ lcd.setBacklight(TextLCD::LightOn);
+ lcd.setCursor(TextLCD::CurOff_BlkOff);
+
+ /* Configure the Temperature sensor device STLM75:
+ - Thermostat mode Interrupt
+ - Fault tolerance: 0
+ */
+ data_write[0] = UNO_CMD;
+ data_write[1] = 0x08;
+
+ GUI_SetFont(GUI_FONT_10_1);
+ GUI_SetTextAlign(GUI_TA_LEFT);
+ int status = i2c.write(UNO_ADDR, data_write, 2, 0);
+ if (status != 0) { // Error
+ GUI_DispStringAt("I2C Error", 0, 220);
+ while (1) {
+ myled = !myled;
+ ThisThread::sleep_for(200);
+ }
+ }
+ GUI_DispStringAt("I2C Connected", 0, 220);
+ GUI_SetFont(GUI_FONT_20B_1);
+ GUI_DispStringAt("Data from Arduino", 0, 0);
+
+ while (1) {
+ // Read Arduino data
+ data_write[0] = UNO_CMD;
+ i2c.write(UNO_ADDR, data_write, 2, 1); // no stop
+ if (i2c.read(UNO_ADDR, data_read, 8, 0)) {
+ GUI_SetFont(GUI_FONT_10_1);
+ GUI_DispStringAt("I2C receive error ", 0, 220);
+ } else {
+ GUI_SetFont(GUI_FONT_10_1);
+ GUI_DispStringAt("I2C Data Received ", 0, 220);
+
+ // read eight bytes
+ // pot value - msb-0, lsb-1
+ // light level - msb-2, lsb-3
+ // temperature - msb-4, lsb-5
+ // sw1 state - 6 - 0-255 based on how long pressed
+ // sw2 state - 7 - 0-255 based on how long pressed
+
+ // Calculate temperature value in Celcius
+ int tempval = (int)((int)data_read[5] << 8) | data_read[4];
+ if (tempval < 0) {
+ TempCelsiusDisplay[0] = '-';
+ } else {
+ TempCelsiusDisplay[0] = '+';
+ }
+
+ // Integer part
+ TempCelsiusDisplay[1] = (tempval / 1000) + 0x30;
+ TempCelsiusDisplay[2] = ((tempval % 1000) / 100) + 0x30;
+ TempCelsiusDisplay[3] = ((tempval % 1000) % 100 / 10) + 0x30;
+ TempCelsiusDisplay[5] = ((tempval % 1000) % 100 % 10) + 0x30;
+
+ //Switches
+
+ unsigned char SW1State = data_read[6];
+ unsigned char SW2State = data_read[7];
+
+ //light level
+ int lightDisplay = (int)((int)data_read[3] << 8) | data_read[2];
+
+ //potentiometer value
+ int potValue = (int)((int)data_read[1] << 8) | data_read[0];
+
+ // Display result
+ pc.printf("temp = %s, Light is %3d%%, Pot is %3d%%%s%s\n", TempCelsiusDisplay, lightDisplay, potValue, SW1State?", SW1 pressed":"", SW2State?", SW2 pressed":"");
+
+ lcd.locate(0,0);
+ lcd.printf("Temp Lght Pot 12");
+ lcd.locate(0,1);
+ lcd.printf(" %2dC %2d%c %2d%c %s%s", tempval/10, lightDisplay, 0x25, potValue, 0x25, SW1State?"1":"_", SW2State?"2":"_");
+
+ sprintf(buffer,"Temp is %2dC \nLight Level is %2d%c \nPot Value is %2d%c \n%s \n%s ", tempval/10, lightDisplay, 0x25, potValue, 0x25, SW1State?"SW1 Pressed ":"SW1 Released", SW2State?"SW2 Pressed ":"SW2 Released");
+ GUI_SetFont(GUI_FONT_20_1);
+ GUI_DispStringAt(buffer, 0, 40);
+ }
+ myled = !myled;
+ thread_sleep_for(100);
+ }
+
+}
+