XBEE Project for LPC1768 - program number 2 of 2.
Dependencies: C12832 LM75B XBee mbed
Diff: main.cpp
- Revision:
- 0:07d7e2c4db5f
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main.cpp Wed Jan 11 20:20:33 2017 +0000 @@ -0,0 +1,71 @@ +#include "mbed.h" /*Include standard mbed library*/ +#include "XBee.h" /*Include library for XBee transmitter/reciever*/ +#include "LM75B.h" /*Include library for temperature sensor*/ +#include "C12832A1Z.h" /*Include library for LCD display*/ + +Serial xbee1(p9,p10); /*Declare XBee transmit/receive as pins 9 and 10*/ +DigitalOut rst1(p30); /*Declare pin 29 as the reset pin for the XBee*/ +LM75B temp(p28,p27); /*Declare temperature sensor transmit/recieve as pins 27 and 28*/ +DigitalOut red(p23); /*Declare pin 23 as the red LED*/ +DigitalOut green(p24); /*Declare pin 24 as the green LED*/ +DigitalOut blue(p25); /*Declare pin 25 as the blue LED*/ +DigitalOut relay(p8); /*Declare pin 8 as the output to an external relay*/ + +C12832A1Z lcd(p5, p7, p6, p8, p11); /*Set pins for LCD display (MOSI, SCK, Reset, A0 and nCS)*/ + +int main() { /*Start of main function*/ + rst1 = 0; /*Set XBee reset pin to 0*/ + wait_ms(1); /*Wait 1 millisecond*/ + rst1 = 1; /*Set XBee reset pin to 1*/ + wait_ms(1); /*Wait 1 millisecond*/ + + lcd.locate(20,0); /*Locate the area to print in on the LCD*/ + lcd.printf("Battery Temperature"); /*Output to LCD screen at position 20,0*/ + lcd.locate(18,10); /*Locate the area to print in on the LCD*/ + lcd.printf("Monitoring - DMOS B"); /*Output to LCD screen at position 18,10*/ + lcd.locate(15,20); /*Locate the area to print in on the LCD*/ + lcd.printf("(C) D.Fitzgerald - 2016"); /*Output to the LCD screen at position 15,20*/ + wait(5); /*Wait 5 seconds (displays the above message for 5 seconds*/ + lcd.cls(); /*Clear all messages from LCD screen*/ + + int a; /*Declare 'a' as an integer value*/ + int b; /*Declare 'b' as an integer value*/ + int c; /*Declare 'c' as an integer value*/ + int d; /*Declare 'd' as an integer value*/ + + lcd.locate(6,0); /*Locate the area to print on the LCD*/ + lcd.printf("DMOS A Batteries = "); /*Output to LCD screen at position 6,0*/ + lcd.locate(6,16); /*Locate the area to print on the LCD*/ + lcd.printf("DMOS B Batteries = "); /*Output to LCD screen at position 6,16*/ + + d=1; /*Set value of 'd' to be '1' permanently*/ + + while (d>0) { /*Infinite while loop whilst d is greater than 0, which is always*/ + /*The three LED's must be 'logically notted' in order to force them off before use*/ + green=!green; /*Logically not the green LED*/ + red=!red; /*Logically not the red LED*/ + blue=!blue; /*Logically not the blue LED (not used but still needs to be turned off to prevent mixing with other colours*/ + b = temp.read(); /*Read the temperature from the LM75 temperature sensor*/ + /*XBee devices are capable of duplex communications, which is utilised in the next two steps*/ + xbee1.putc(b); /*Put the read temperature into the XBee output port*/ + a = xbee1.getc(); /*Retrieve the temperature that is being sent from the other ARM MBED device from the XBee*/ + lcd.locate(100,0); /*Locate the area to print the temperature to on the LCD screen*/ + lcd.printf("%d C\n",a); /*Print the temperature from the other ARM MBED device at location 100,0*/ + lcd.locate(100,16); /*Locate the area to print the temperature to on the LCD screen*/ + lcd.printf("%d C\n",b); /*Print the temperature from the local ARM MBED device at location 100,16*/ + wait_us(10); /*Wait 10 microseconds*/ + c = abs(a-b); /*Subtract the local temperature from the remote temperature and create this as an absolute (positive) only value*/ + if(c<3){ /*Start of If loop for if the temperature difference calculated in the previous step is equal to or less than 3 degrees*/ + /*The LED's have to be forced off to prevent the RGB LED mixing it's colours*/ + green=1; /*Turn the green LED on*/ + red=0; /*Force the red LED off*/ + blue=0; /*Force the blue LED off*/ + } /*End of If loop*/ + else{ /*If the temperature difference calculated as 'c' is anything other than the parameter set in the previous if loop, do the following...*/ + red=1; /*Turn the red LED on*/ + green=0; /*Force the green LED off*/ + blue=0; /*Force the blue LED off*/ + relay=1; /*Apply a logic value of '1' to pin 8, to activate an external relay in order to turn off battery charging supply*/ + } /*End of If loop*/ + } /*End of infinite while loop*/ +} /*End of main function*/ \ No newline at end of file