Frazer Legge / Mbed 2 deprecated Assignment_3__Embedded_Software

chad

Dependencies:   MCP23017 WattBob_TextLCD mbed-rtos mbed

main.cpp@16:bebcc7d24f3e, 2017-03-10 (annotated)

Committer:
f_legge
Date:
Fri Mar 10 18:50:37 2017 +0000
Revision:
16:bebcc7d24f3e
Parent:
15:85616bc0e2ae
Child:
17:bc25d5f47bab
Task1 Working;

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 16:bebcc7d24f3e 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 14:ede0e7ed2745 11
f_legge 14:ede0e7ed2745 12
f_legge 4:70553c83c65a 13 // Pointers to LCD Screen
f_legge 4:70553c83c65a 14 MCP23017 *par_port; // pointer to 16-bit parallel I/O chip
f_legge 4:70553c83c65a 15 WattBob_TextLCD *lcd; // pointer to 2*16 character LCD object
f_legge 13:ad04937ca366 16 FILE *fp; // pointer to uSD object
f_legge 4:70553c83c65a 17
f_legge 16:bebcc7d24f3e 18 SDFileSystem sd(p5, p6, p7, p8, "sd"); //uSD pinout
f_legge 14:ede0e7ed2745 19
f_legge 4:70553c83c65a 20 // Digital I/O p11 to p20
f_legge 16:bebcc7d24f3e 21 DigitalIn Fq(p14); // Digital frequency in for measurement
f_legge 14:ede0e7ed2745 22 DigitalIn DS(p12); // Digital switch input
f_legge 14:ede0e7ed2745 23 DigitalIn DS_s(p13); // Digital shutdown switch
f_legge 16:bebcc7d24f3e 24 DigitalOut WD_pulse_out(p11); // Watchdog Pulse
f_legge 14:ede0e7ed2745 25 DigitalOut led1(LED1);
f_legge 14:ede0e7ed2745 26 DigitalOut led2(LED2);
f_legge 4:70553c83c65a 27
f_legge 16:bebcc7d24f3e 28
f_legge 16:bebcc7d24f3e 29
f_legge 4:70553c83c65a 30 // Analogue I/O p15 to p20
f_legge 16:bebcc7d24f3e 31 AnalogIn A1_(p15); // Analogue input to be filtered
f_legge 14:ede0e7ed2745 32 AnalogIn A2_(p16); // Analogue input to be filtered
f_legge 4:70553c83c65a 33
f_legge 4:70553c83c65a 34 // Timer objects
f_legge 14:ede0e7ed2745 35 //Ticker tick; // Clock timer for CycExec
f_legge 14:ede0e7ed2745 36 Ticker ticker;
f_legge 15:85616bc0e2ae 37 Timer timer; // Frequency Timer
f_legge 15:85616bc0e2ae 38 Timer T5; // Timer for idle states
f_legge 4:70553c83c65a 39
f_legge 4:70553c83c65a 40 // Constant Declaration
f_legge 5:e1ade53bce83 41 const int SampFreq = 100; // Sampling Frequency
f_legge 5:e1ade53bce83 42 const int WD = 6000; // Watchdog pulse length
f_legge 4:70553c83c65a 43
f_legge 4:70553c83c65a 44 // Variable Declaration
f_legge 14:ede0e7ed2745 45 int tck = 1; // Used to define what task is called (CycExec)
f_legge 0:10e3e2697134 46
f_legge 15:85616bc0e2ae 47 int FqIn; // Frequency input boolean
f_legge 16:bebcc7d24f3e 48 float period; // Frequency timer variable (Frequency Check)
f_legge 16:bebcc7d24f3e 49 float freq; // Frequency return variable (Frequency Check)
f_legge 4:70553c83c65a 50
f_legge 15:85616bc0e2ae 51 int DSIn; // Switch Input boolean
f_legge 16:bebcc7d24f3e 52 int switch_state;
f_legge 10:2414d28be4ba 53
f_legge 16:bebcc7d24f3e 54 int WD_pulse;
f_legge 12:d088f8024cf0 55
f_legge 10:2414d28be4ba 56
f_legge 15:85616bc0e2ae 57 float A1_in; // Analogue 1 input variable
f_legge 16:bebcc7d24f3e 58 float A2_in; // Analogue 2 input variable
f_legge 16:bebcc7d24f3e 59 float A1_val; // Analogue 1 return variable (Analogue In)
f_legge 16:bebcc7d24f3e 60 float A2_val; // Analogue 2 return variable (Analogue In)
f_legge 4:70553c83c65a 61
f_legge 16:bebcc7d24f3e 62 int DS_sIn; // Shutdown Switch
f_legge 16:bebcc7d24f3e 63 int error_code; // Error code variable
f_legge 6:c538f317f426 64
f_legge 16:bebcc7d24f3e 65 int logcount; // Keep track of log number
f_legge 4:70553c83c65a 66
f_legge 14:ede0e7ed2745 67
f_legge 14:ede0e7ed2745 68
f_legge 4:70553c83c65a 69 ////////////////////////////////////////////////////////////////////////////////
f_legge 4:70553c83c65a 70 //
f_legge 4:70553c83c65a 71 // Main Program
f_legge 4:70553c83c65a 72 //
f_legge 13:ad04937ca366 73
f_legge 13:ad04937ca366 74 void CycExec()
f_legge 14:ede0e7ed2745 75 {
f_legge 16:bebcc7d24f3e 76 /*
f_legge 16:bebcc7d24f3e 77 if(tck % 10 == 6) { // Every Second (needs offset) freq
f_legge 16:bebcc7d24f3e 78 //Task1();
f_legge 16:bebcc7d24f3e 79 } else if(tck % 3 == 2) { // Every 1/3 sec Dig In
f_legge 16:bebcc7d24f3e 80 Task2();
f_legge 16:bebcc7d24f3e 81 } else if(tck % 20 == 7) { // Every 2 sec WD
f_legge 16:bebcc7d24f3e 82 Task3();
f_legge 16:bebcc7d24f3e 83 } else if(tck % 5 == 0) { // Every 1/2 sec Ana In
f_legge 15:85616bc0e2ae 84 Task4();
f_legge 16:bebcc7d24f3e 85 } else if(tck % 20 == 1) { // Every 2 sec LCD
f_legge 16:bebcc7d24f3e 86 Task5();
f_legge 16:bebcc7d24f3e 87 } else if(tck % 5 == 3) { // Every 0.5 sec Error
f_legge 16:bebcc7d24f3e 88 // Task6();
f_legge 16:bebcc7d24f3e 89 } else if(tck % 5 == 4) { // Every 1/2 sec Log
f_legge 16:bebcc7d24f3e 90 // Task7();
f_legge 16:bebcc7d24f3e 91 }
f_legge 16:bebcc7d24f3e 92 //else{ // S/D
f_legge 16:bebcc7d24f3e 93 // Task8();
f_legge 16:bebcc7d24f3e 94 //}*/
f_legge 16:bebcc7d24f3e 95
f_legge 16:bebcc7d24f3e 96 Task1();
f_legge 16:bebcc7d24f3e 97
f_legge 16:bebcc7d24f3e 98 led2 = !led2;
f_legge 16:bebcc7d24f3e 99
f_legge 16:bebcc7d24f3e 100 FqIn = Fq;
f_legge 16:bebcc7d24f3e 101 DSIn = DS;
f_legge 16:bebcc7d24f3e 102 A1_in = A1_;
f_legge 16:bebcc7d24f3e 103 A2_in = A2_;
f_legge 16:bebcc7d24f3e 104 DS_sIn = DS_s;
f_legge 16:bebcc7d24f3e 105 WD_pulse_out = WD_pulse;
f_legge 16:bebcc7d24f3e 106
f_legge 16:bebcc7d24f3e 107 tck++;
f_legge 16:bebcc7d24f3e 108
f_legge 14:ede0e7ed2745 109 }
f_legge 14:ede0e7ed2745 110
f_legge 4:70553c83c65a 111
f_legge 4:70553c83c65a 112 int main()
f_legge 16:bebcc7d24f3e 113 {
f_legge 4:70553c83c65a 114 // LCD Init
f_legge 4:70553c83c65a 115 par_port = new MCP23017(p9, p10, 0x40); // initialise 16-bit I/O chip
f_legge 14:ede0e7ed2745 116 par_port->config(0x0F00, 0x0F00, 0x0F00);
f_legge 16:bebcc7d24f3e 117
f_legge 4:70553c83c65a 118 lcd = new WattBob_TextLCD(par_port); // initialise 2*26 char display
f_legge 4:70553c83c65a 119 par_port->write_bit(1,BL_BIT); // turn LCD backlight ON
f_legge 16:bebcc7d24f3e 120
f_legge 16:bebcc7d24f3e 121 lcd->cls(); // clear display
f_legge 16:bebcc7d24f3e 122
f_legge 16:bebcc7d24f3e 123
f_legge 16:bebcc7d24f3e 124
f_legge 4:70553c83c65a 125 // .csv log Init
f_legge 16:bebcc7d24f3e 126 mkdir("/sd/logs", 0777);
f_legge 16:bebcc7d24f3e 127 fp = fopen ("/sd/logs/log.txt", "w"); // Pointer to log file on uSD
f_legge 16:bebcc7d24f3e 128 fprintf(fp, "Log of Frazer Legge's Embedded Software Assignment 2\n\n");
f_legge 16:bebcc7d24f3e 129
f_legge 16:bebcc7d24f3e 130 ticker.attach(&CycExec, 1.0); // Period set to 25ms
f_legge 16:bebcc7d24f3e 131
f_legge 16:bebcc7d24f3e 132 while(1) {
f_legge 14:ede0e7ed2745 133 led1 = !led1;
f_legge 16:bebcc7d24f3e 134 wait(0.2);
f_legge 16:bebcc7d24f3e 135 }
f_legge 14:ede0e7ed2745 136 }
f_legge 14:ede0e7ed2745 137
f_legge 14:ede0e7ed2745 138
f_legge 14:ede0e7ed2745 139
f_legge 14:ede0e7ed2745 140