Frazer Legge / Mbed 2 deprecated Assignment_3__Embedded_Software

chad

Dependencies:   MCP23017 WattBob_TextLCD mbed-rtos mbed

main.cpp@11:b48ff77c664a, 2017-03-07 (annotated)

Committer:
f_legge
Date:
Tue Mar 07 19:07:24 2017 +0000
Revision:
11:b48ff77c664a
Parent:
10:2414d28be4ba
Child:
12:d088f8024cf0
First compile. Added offsets to timers

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 4:70553c83c65a 9
f_legge 4:70553c83c65a 10
f_legge 0:10e3e2697134 11 #include "mbed.h"
f_legge 4:70553c83c65a 12 #include "MCP23017.h"
f_legge 4:70553c83c65a 13 #include "WattBob_TextLCD.h"
f_legge 11:b48ff77c664a 14 #include "SDFileSystem.h"
f_legge 11:b48ff77c664a 15 #include "tasks.h"
f_legge 4:70553c83c65a 16
f_legge 4:70553c83c65a 17 #define BACK_LIGHT_ON(INTERFACE) INTERFACE->write_bit(1,BL_BIT)
f_legge 4:70553c83c65a 18 #define BACK_LIGHT_OFF(INTERFACE) INTERFACE->write_bit(0,BL_BIT)
f_legge 0:10e3e2697134 19
f_legge 4:70553c83c65a 20 // Pointers to LCD Screen
f_legge 4:70553c83c65a 21 MCP23017 *par_port; // pointer to 16-bit parallel I/O chip
f_legge 4:70553c83c65a 22 WattBob_TextLCD *lcd; // pointer to 2*16 character LCD object
f_legge 7:71a923f423f4 23 FILE *fo; // pointer to uSD object
f_legge 4:70553c83c65a 24
f_legge 4:70553c83c65a 25 // Digital I/O p11 to p20
f_legge 10:2414d28be4ba 26 DigitalIn Fq(p11); // Digital frequency in for measurement
f_legge 10:2414d28be4ba 27 DigitalIn DS(p12); // Digital switch input
f_legge 10:2414d28be4ba 28 DigitalIn DS_s(p13); // Digital shutdown switch
f_legge 10:2414d28be4ba 29 DigitalOut WD_pulse_out(p14); // Watchdog Pulse
f_legge 4:70553c83c65a 30 SDFileSystem uSD(p5, p6, p7, p8, "uSD"); //uSD pinout
f_legge 4:70553c83c65a 31
f_legge 4:70553c83c65a 32 // Analogue I/O p15 to p20
f_legge 11:b48ff77c664a 33 AnalogIn A1_(p15); // Analogue input to be filtered
f_legge 11:b48ff77c664a 34 AnalogIn A2_(p16); // Analogue input to be filtered
f_legge 4:70553c83c65a 35
f_legge 4:70553c83c65a 36 // Timer objects
f_legge 9:d04a313420c7 37 Ticker tick; // Clock timer for CycExec
f_legge 4:70553c83c65a 38 Timer timer; // Frequency Timer
f_legge 9:d04a313420c7 39 Timer T5; // Timer for idle states
f_legge 4:70553c83c65a 40
f_legge 4:70553c83c65a 41 // Constant Declaration
f_legge 5:e1ade53bce83 42 const int SampFreq = 100; // Sampling Frequency
f_legge 5:e1ade53bce83 43 const int WD = 6000; // Watchdog pulse length
f_legge 4:70553c83c65a 44
f_legge 4:70553c83c65a 45 // Variable Declaration
f_legge 4:70553c83c65a 46 long int tck = 0; // Used to define what task is called (CycExec)
f_legge 0:10e3e2697134 47
f_legge 10:2414d28be4ba 48 bool FqIn = Fq; // Frequency input boolean
f_legge 4:70553c83c65a 49 int period = 0; // Frequency timer variable (Frequency Check)
f_legge 4:70553c83c65a 50 int freq = 0; // Frequency return variable (Frequency Check)
f_legge 4:70553c83c65a 51
f_legge 10:2414d28be4ba 52 bool DSIn = DS; // Switch Input boolean
f_legge 4:70553c83c65a 53 bool switch_state = 0; // Switch high or low (Digital In)
f_legge 10:2414d28be4ba 54
f_legge 10:2414d28be4ba 55 bool WD_pulse;
f_legge 11:b48ff77c664a 56 //bool WD_pulse_out = WD_pulse;
f_legge 10:2414d28be4ba 57
f_legge 11:b48ff77c664a 58 int A1_in = A1_; // Analogue 1 input variable
f_legge 11:b48ff77c664a 59 int A2_in = A2_; // Analogue 2 input variable
f_legge 4:70553c83c65a 60 int A1_val = 0; // Analogue 1 return variable (Analogue In)
f_legge 4:70553c83c65a 61 int A2_val = 0; // Analogue 2 return variable (Analogue In)
f_legge 4:70553c83c65a 62
f_legge 11:b48ff77c664a 63 bool DS_sIn = DS_s; // Shutdown Switch boolean
f_legge 9:d04a313420c7 64 int error_code = 0; // Error code variable
f_legge 6:c538f317f426 65
f_legge 9:d04a313420c7 66 int logcount = 0; // Keep track of log number
f_legge 4:70553c83c65a 67
f_legge 4:70553c83c65a 68 ////////////////////////////////////////////////////////////////////////////////
f_legge 4:70553c83c65a 69 //
f_legge 4:70553c83c65a 70 // Main Program
f_legge 4:70553c83c65a 71 //
f_legge 11:b48ff77c664a 72 void CycExec();
f_legge 4:70553c83c65a 73
f_legge 4:70553c83c65a 74 int main()
f_legge 4:70553c83c65a 75 {
f_legge 4:70553c83c65a 76 // LCD Init
f_legge 4:70553c83c65a 77 par_port = new MCP23017(p9, p10, 0x40); // initialise 16-bit I/O chip
f_legge 4:70553c83c65a 78 lcd = new WattBob_TextLCD(par_port); // initialise 2*26 char display
f_legge 4:70553c83c65a 79 par_port->write_bit(1,BL_BIT); // turn LCD backlight ON
f_legge 4:70553c83c65a 80 lcd->cls(); // clear display
f_legge 4:70553c83c65a 81
f_legge 4:70553c83c65a 82 // .csv log Init
f_legge 7:71a923f423f4 83 fo = fopen ("/uSD/log.csv", "a"); // Pointer to log file on uSD
f_legge 7:71a923f423f4 84 fprintf(fo, "Log of Frazer Legge's Embedded Software Assignment 2\n\n");
f_legge 4:70553c83c65a 85
f_legge 4:70553c83c65a 86 //
f_legge 4:70553c83c65a 87 tick.attach(&CycExec, 0.025); // Period set to 25ms
f_legge 4:70553c83c65a 88 while(1){
f_legge 4:70553c83c65a 89 }
f_legge 0:10e3e2697134 90 }
f_legge 4:70553c83c65a 91
f_legge 4:70553c83c65a 92 void CycExec()
f_legge 4:70553c83c65a 93 {
f_legge 11:b48ff77c664a 94 if(tck % 40 == 4){ // Every Second (needs offset)
f_legge 9:d04a313420c7 95 Task1(timer, FqIn, SampFreq, period, freq);
f_legge 9:d04a313420c7 96 }
f_legge 11:b48ff77c664a 97 else if(tck % 13 == 8){ // Every 1/3 sec
f_legge 9:d04a313420c7 98 Task2(DSIn, switch_state);
f_legge 9:d04a313420c7 99 }
f_legge 11:b48ff77c664a 100 else if(tck % 80 == 7){ // Every 2 sec
f_legge 9:d04a313420c7 101 Task3(WD_pulse, WD);
f_legge 9:d04a313420c7 102 }
f_legge 11:b48ff77c664a 103 else if(tck % 20 == 0){ // Every 1/2 sec
f_legge 9:d04a313420c7 104 Task4(A1_val, A2_val, A1_in, A2_in);
f_legge 9:d04a313420c7 105 }
f_legge 11:b48ff77c664a 106 else if(tck % 80 == 1){ // Every 2 sec
f_legge 10:2414d28be4ba 107 Task5(freq, switch_state, A1_val, A2_val);
f_legge 10:2414d28be4ba 108 }
f_legge 11:b48ff77c664a 109 else if(tck % 20 == 3){ // Every 0.5 sec
f_legge 10:2414d28be4ba 110 Task6(switch_state, A1_val, A2_val, error_code);
f_legge 9:d04a313420c7 111 }
f_legge 11:b48ff77c664a 112 else if(tck % 20 == 10){ // Every 1/2 sec
f_legge 10:2414d28be4ba 113 Task7(logcount, freq, switch_state, A1_val, A2_val);
f_legge 9:d04a313420c7 114 }
f_legge 11:b48ff77c664a 115 else if(tck % 20 == 12){
f_legge 11:b48ff77c664a 116 Task8(DS_sIn, tick, T5);
f_legge 9:d04a313420c7 117 }
f_legge 10:2414d28be4ba 118 tck++;
f_legge 9:d04a313420c7 119 }
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