Darren Fitzgerald / Mbed 2 deprecated XBEE_Project_FRDM

XBEE Project for FRDM-K64F - program number 1 of 2.

Dependencies:   C12832 LM75B SDFileSystem XBee mbed

main.cpp@0:add6ccfe6b49, 2017-01-11 (annotated)

Committer:
darrenf87
Date:
Wed Jan 11 20:18:18 2017 +0000
Revision:
0:add6ccfe6b49
XBEE project for FRDM-K64F device. This project is number 1 of 2 programs for the final real time embedded systems report.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
darrenf87 0:add6ccfe6b49 1 #include "mbed.h" /*Include standard mbed library*/
darrenf87 0:add6ccfe6b49 2 #include "XBee.h" /*Include library for XBee transmitter/reciever*/
darrenf87 0:add6ccfe6b49 3 #include "C12832.h" /*Include library for temperature sensor*/
darrenf87 0:add6ccfe6b49 4 #include "LM75B.h" /*Include library for LCD display*/
darrenf87 0:add6ccfe6b49 5 #include "SDFileSystem.h" /*Include library for SD card read/write*/
darrenf87 0:add6ccfe6b49 6
darrenf87 0:add6ccfe6b49 7 Serial xbee1(D1,D0); /*Declare XBee transmit/receive as pins 1 and 0*/
darrenf87 0:add6ccfe6b49 8 DigitalOut rst1(D3); /*Declare pin 3 as the reset pin for the XBee*/
darrenf87 0:add6ccfe6b49 9 LM75B temp(PTE25,PTE24); /*Declare temperature sensor transmit/recieve as pins 24 and 25*/
darrenf87 0:add6ccfe6b49 10 DigitalOut red(PTB22); /*Declare pin 22 as the red LED*/
darrenf87 0:add6ccfe6b49 11 DigitalOut green(PTE26); /*Declare pin 26 as the green LED*/
darrenf87 0:add6ccfe6b49 12 DigitalOut blue(PTB21); /*Declare pin 21 as the blue LED*/
darrenf87 0:add6ccfe6b49 13 DigitalOut relay(D4); /*Declare pin 4 as the output to an external relay*/
darrenf87 0:add6ccfe6b49 14
darrenf87 0:add6ccfe6b49 15 C12832 lcd(D11, D13, D12, D7, D10); /*Assign pins for LCD display (MOSI, SCK, Reset, A0 and nCS)*/
darrenf87 0:add6ccfe6b49 16 SDFileSystem sd(PTE3, PTE1, PTE2, PTE4, "sd"); /*Assign pins for SD card us (MOSI, MISO, sclk and cs*/
darrenf87 0:add6ccfe6b49 17
darrenf87 0:add6ccfe6b49 18 int main() { /*Start of main function*/
darrenf87 0:add6ccfe6b49 19 rst1 = 0; /*Set XBee reset pin to 0*/
darrenf87 0:add6ccfe6b49 20 wait_ms(1); /*Wait 1 millisecond*/
darrenf87 0:add6ccfe6b49 21 rst1 = 1; /*Set XBee reset pin to 1*/
darrenf87 0:add6ccfe6b49 22 wait_ms(1); /*Wait 1 millisecond*/
darrenf87 0:add6ccfe6b49 23 FILE *File = fopen("/sd/BTLDirectory.txt", "w"); /*Open file*/
darrenf87 0:add6ccfe6b49 24
darrenf87 0:add6ccfe6b49 25
darrenf87 0:add6ccfe6b49 26 lcd.locate(20,0); /*Locate the area to print in on the LCD*/
darrenf87 0:add6ccfe6b49 27 lcd.printf("Battery Temperature"); /*Output to LCD screen at position 20,0*/
darrenf87 0:add6ccfe6b49 28 lcd.locate(18,10); /*Locate the area to print in on the LCD*/
darrenf87 0:add6ccfe6b49 29 lcd.printf("Monitoring - DMOS A"); /*Output to LCD screen at position 18,10*/
darrenf87 0:add6ccfe6b49 30 lcd.locate(15,20); /*Locate the area to print in on the LCD*/
darrenf87 0:add6ccfe6b49 31 lcd.printf("(C) D.Fitzgerald - 2016"); /*Output to the LCD screen at position 15,20*/
darrenf87 0:add6ccfe6b49 32 wait(5); /*Wait 5 seconds (displays the above message for 5 seconds*/
darrenf87 0:add6ccfe6b49 33 lcd.cls(); /*Clear all messages from LCD screen*/
darrenf87 0:add6ccfe6b49 34
darrenf87 0:add6ccfe6b49 35 int a; /*Declare 'a' as an integer value*/
darrenf87 0:add6ccfe6b49 36 int b; /*Declare 'b' as an integer value*/
darrenf87 0:add6ccfe6b49 37 int c; /*Declare 'c' as an integer value*/
darrenf87 0:add6ccfe6b49 38 int d; /*Declare 'd' as an integer value*/
darrenf87 0:add6ccfe6b49 39
darrenf87 0:add6ccfe6b49 40 lcd.locate(6,0); /*Locate the area to print on the LCD*/
darrenf87 0:add6ccfe6b49 41 lcd.printf("DMOS A Batteries = "); /*Output to LCD screen at position 6,0*/
darrenf87 0:add6ccfe6b49 42 lcd.locate(6,16); /*Locate the area to print on the LCD*/
darrenf87 0:add6ccfe6b49 43 lcd.printf("DMOS B Batteries = "); /*Output to LCD screen at position 6,16*/
darrenf87 0:add6ccfe6b49 44
darrenf87 0:add6ccfe6b49 45 d=1; /*Set value of 'd' to be '1' permanently*/
darrenf87 0:add6ccfe6b49 46
darrenf87 0:add6ccfe6b49 47 while (d>0) { /*Infinite while loop whilst d is greater than 0, which is always*/
darrenf87 0:add6ccfe6b49 48 /*The three LED's must be 'logically notted' in order to force them off before use*/
darrenf87 0:add6ccfe6b49 49 green=!green; /*Logically not the green LED*/
darrenf87 0:add6ccfe6b49 50 red=!red; /*Logically not the red LED*/
darrenf87 0:add6ccfe6b49 51 blue=!blue; /*Logically not the blue LED (not used but still needs to be turned off to prevent mixing with other colours*/
darrenf87 0:add6ccfe6b49 52 a = temp.read(); /*Read the temperature from the LM75 temperature sensor*/
darrenf87 0:add6ccfe6b49 53 /*XBee devices are capable of duplex communications, which is utilised in the next two steps*/
darrenf87 0:add6ccfe6b49 54 xbee1.putc(a); /*Put the read temperature into the XBee output port*/
darrenf87 0:add6ccfe6b49 55 b = xbee1.getc(); /*Retrieve the temperature that is being sent from the other ARM MBED device from the XBee*/
darrenf87 0:add6ccfe6b49 56 lcd.locate(100,0); /*Locate the area to print the temperature to on the LCD screen*/
darrenf87 0:add6ccfe6b49 57 lcd.printf("%d C\n",a); /*Print the temperature from the other ARM MBED device at location 100,0*/
darrenf87 0:add6ccfe6b49 58 lcd.locate(100,16); /*Locate the area to print the temperature to on the LCD screen*/
darrenf87 0:add6ccfe6b49 59 lcd.printf("%d C\n",b); /*Print the temperature from the local ARM MBED device at location 100,16*/
darrenf87 0:add6ccfe6b49 60 wait_us(10); /*Wait 10 microseconds*/
darrenf87 0:add6ccfe6b49 61 c = abs(a-b); /*Subtract the local temperature from the remote temperature and create this as an absolute (positive) only value*/
darrenf87 0:add6ccfe6b49 62 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*/
darrenf87 0:add6ccfe6b49 63 /*The LED's have to be forced off to prevent the RGB LED mixing it's colours*/
darrenf87 0:add6ccfe6b49 64 green=1; /*Turn the green LED on*/
darrenf87 0:add6ccfe6b49 65 blue=0; /*Force the red LED off*/
darrenf87 0:add6ccfe6b49 66 red=0; /*Force the blue LED off*/
darrenf87 0:add6ccfe6b49 67 } /*End of If loop*/
darrenf87 0:add6ccfe6b49 68 else{ /*If the temperature difference calculated as 'c' is anything other than the parameter set in the previous if loop, do the following...*/
darrenf87 0:add6ccfe6b49 69 red=1; /*Turn the red LED on*/
darrenf87 0:add6ccfe6b49 70 green=0; /*Force the green LED off*/
darrenf87 0:add6ccfe6b49 71 blue=0; /*Force the blue LED off*/
darrenf87 0:add6ccfe6b49 72 relay=1; /*Apply a logic value of '1' to pin 8, to activate an external relay in order to turn off battery charging supply*/
darrenf87 0:add6ccfe6b49 73 fprintf(File, "The battery box temperatures on this train have differed by\nat least 3 degrees during the course of the day"); /*Store number of events to SD Card*/
darrenf87 0:add6ccfe6b49 74 fclose(File); /*Close SD Card File*/
darrenf87 0:add6ccfe6b49 75 } /*End of If loop*/
darrenf87 0:add6ccfe6b49 76 } /*End of infinite while loop*/
darrenf87 0:add6ccfe6b49 77 } /*End of main function*/