Frazer Legge / Mbed 2 deprecated Assignment_3__Embedded_Software

chad

Dependencies:   MCP23017 WattBob_TextLCD mbed-rtos mbed

main.cpp@13:ad04937ca366, 2017-03-07 (annotated)

Committer:
f_legge
Date:
Tue Mar 07 22:32:06 2017 +0000
Revision:
13:ad04937ca366
Parent:
12:d088f8024cf0
Child:
14:ede0e7ed2745
Changed to global Variables;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
f_legge 4:70553c83c65a 1 // Paramater Allocation
f_legge 4:70553c83c65a 2 // Paramater: 17
f_legge 4:70553c83c65a 3 // Log Option: 1 (uSD)
f_legge 4:70553c83c65a 4 // Watchdog Pulse Length: 6ms
f_legge 4:70553c83c65a 5 // Watchdog Repetion Rate: 0.5
f_legge 4:70553c83c65a 6 // Error Display: 1 (LCD)
f_legge 4:70553c83c65a 7 // Execution time display: Task5 (LDC display)
f_legge 4:70553c83c65a 8
f_legge 13:ad04937ca366 9 #include "main.h"
f_legge 0:10e3e2697134 10
f_legge 4:70553c83c65a 11 // Pointers to LCD Screen
f_legge 4:70553c83c65a 12 MCP23017 *par_port; // pointer to 16-bit parallel I/O chip
f_legge 4:70553c83c65a 13 WattBob_TextLCD *lcd; // pointer to 2*16 character LCD object
f_legge 13:ad04937ca366 14 FILE *fp; // pointer to uSD object
f_legge 4:70553c83c65a 15
f_legge 4:70553c83c65a 16 // Digital I/O p11 to p20
f_legge 10:2414d28be4ba 17 DigitalIn Fq(p11); // Digital frequency in for measurement
f_legge 10:2414d28be4ba 18 DigitalIn DS(p12); // Digital switch input
f_legge 10:2414d28be4ba 19 DigitalIn DS_s(p13); // Digital shutdown switch
f_legge 10:2414d28be4ba 20 DigitalOut WD_pulse_out(p14); // Watchdog Pulse
f_legge 12:d088f8024cf0 21 SDFileSystem sd(p5, p6, p7, p8, "sd"); //uSD pinout
f_legge 4:70553c83c65a 22
f_legge 4:70553c83c65a 23 // Analogue I/O p15 to p20
f_legge 11:b48ff77c664a 24 AnalogIn A1_(p15); // Analogue input to be filtered
f_legge 11:b48ff77c664a 25 AnalogIn A2_(p16); // Analogue input to be filtered
f_legge 4:70553c83c65a 26
f_legge 4:70553c83c65a 27 // Timer objects
f_legge 13:ad04937ca366 28 //Ticker tick; // Clock timer for CycExec
f_legge 13:ad04937ca366 29 Thread tick;
f_legge 4:70553c83c65a 30 Timer timer; // Frequency Timer
f_legge 9:d04a313420c7 31 Timer T5; // Timer for idle states
f_legge 4:70553c83c65a 32
f_legge 4:70553c83c65a 33 // Constant Declaration
f_legge 5:e1ade53bce83 34 const int SampFreq = 100; // Sampling Frequency
f_legge 5:e1ade53bce83 35 const int WD = 6000; // Watchdog pulse length
f_legge 4:70553c83c65a 36
f_legge 4:70553c83c65a 37 // Variable Declaration
f_legge 4:70553c83c65a 38 long int tck = 0; // Used to define what task is called (CycExec)
f_legge 0:10e3e2697134 39
f_legge 10:2414d28be4ba 40 bool FqIn = Fq; // Frequency input boolean
f_legge 4:70553c83c65a 41 int period = 0; // Frequency timer variable (Frequency Check)
f_legge 4:70553c83c65a 42 int freq = 0; // Frequency return variable (Frequency Check)
f_legge 4:70553c83c65a 43
f_legge 10:2414d28be4ba 44 bool DSIn = DS; // Switch Input boolean
f_legge 13:ad04937ca366 45 int switch_state = 0;
f_legge 10:2414d28be4ba 46
f_legge 12:d088f8024cf0 47 int WD_pulse;
f_legge 12:d088f8024cf0 48
f_legge 10:2414d28be4ba 49
f_legge 11:b48ff77c664a 50 int A1_in = A1_; // Analogue 1 input variable
f_legge 11:b48ff77c664a 51 int A2_in = A2_; // Analogue 2 input variable
f_legge 4:70553c83c65a 52 int A1_val = 0; // Analogue 1 return variable (Analogue In)
f_legge 4:70553c83c65a 53 int A2_val = 0; // Analogue 2 return variable (Analogue In)
f_legge 4:70553c83c65a 54
f_legge 11:b48ff77c664a 55 bool DS_sIn = DS_s; // Shutdown Switch boolean
f_legge 9:d04a313420c7 56 int error_code = 0; // Error code variable
f_legge 6:c538f317f426 57
f_legge 9:d04a313420c7 58 int logcount = 0; // Keep track of log number
f_legge 4:70553c83c65a 59
f_legge 4:70553c83c65a 60 ////////////////////////////////////////////////////////////////////////////////
f_legge 4:70553c83c65a 61 //
f_legge 4:70553c83c65a 62 // Main Program
f_legge 4:70553c83c65a 63 //
f_legge 13:ad04937ca366 64
f_legge 13:ad04937ca366 65 void CycExec()
f_legge 13:ad04937ca366 66 {/*
f_legge 13:ad04937ca366 67 if(tck % 40 == 4){ // Every Second (needs offset)
f_legge 13:ad04937ca366 68 Task1();
f_legge 13:ad04937ca366 69 }
f_legge 13:ad04937ca366 70 else if(tck % 13 == 8){ // Every 1/3 sec
f_legge 13:ad04937ca366 71 Task2();
f_legge 13:ad04937ca366 72 }
f_legge 13:ad04937ca366 73 else if(tck % 80 == 7){ // Every 2 sec
f_legge 13:ad04937ca366 74 Task3();
f_legge 13:ad04937ca366 75 }
f_legge 13:ad04937ca366 76 else if(tck % 20 == 0){ // Every 1/2 sec
f_legge 13:ad04937ca366 77 Task4();
f_legge 13:ad04937ca366 78 }
f_legge 13:ad04937ca366 79 else if(tck % 80 == 1){ // Every 2 sec
f_legge 13:ad04937ca366 80 Task5();
f_legge 13:ad04937ca366 81 }
f_legge 13:ad04937ca366 82 else if(tck % 20 == 3){ // Every 0.5 sec
f_legge 13:ad04937ca366 83 Task6();
f_legge 13:ad04937ca366 84 }
f_legge 13:ad04937ca366 85 else if(tck % 20 == 10){ // Every 1/2 sec
f_legge 13:ad04937ca366 86 Task7();
f_legge 13:ad04937ca366 87 }*/
f_legge 13:ad04937ca366 88 //else{
f_legge 13:ad04937ca366 89 // Task8();
f_legge 13:ad04937ca366 90 //}
f_legge 13:ad04937ca366 91 Task1();
f_legge 13:ad04937ca366 92 tck++;
f_legge 13:ad04937ca366 93 WD_pulse_out = WD_pulse;
f_legge 13:ad04937ca366 94 }
f_legge 4:70553c83c65a 95
f_legge 4:70553c83c65a 96 int main()
f_legge 4:70553c83c65a 97 {
f_legge 4:70553c83c65a 98 // LCD Init
f_legge 4:70553c83c65a 99 par_port = new MCP23017(p9, p10, 0x40); // initialise 16-bit I/O chip
f_legge 4:70553c83c65a 100 lcd = new WattBob_TextLCD(par_port); // initialise 2*26 char display
f_legge 4:70553c83c65a 101 par_port->write_bit(1,BL_BIT); // turn LCD backlight ON
f_legge 4:70553c83c65a 102 lcd->cls(); // clear display
f_legge 4:70553c83c65a 103
f_legge 4:70553c83c65a 104 // .csv log Init
f_legge 13:ad04937ca366 105 fp = fopen ("/sd/log.txt", "a"); // Pointer to log file on uSD
f_legge 13:ad04937ca366 106 fprintf(fp, "Log of Frazer Legge's Embedded Software Assignment 2\n\n");
f_legge 4:70553c83c65a 107
f_legge 4:70553c83c65a 108 //
f_legge 13:ad04937ca366 109 //tick.attach(&CycExec, 0.025); // Period set to 25ms
f_legge 4:70553c83c65a 110 while(1){
f_legge 12:d088f8024cf0 111 tick.start(&CycExec);
f_legge 13:ad04937ca366 112 wait_ms(100);
f_legge 4:70553c83c65a 113 }
f_legge 13:ad04937ca366 114 }