File content as of revision 16:bebcc7d24f3e:

// Paramater Allocation
// Paramater: 17
// Log Option: 1 (uSD)
// Watchdog Pulse Length: 6ms
// Watchdog Repetion Rate: 0.5
// Error Display: 1 (LCD)
// Execution time display: Task5 (LDC display)

#include "main.h"



// Pointers to LCD Screen
MCP23017            *par_port;  // pointer to 16-bit parallel I/O chip
WattBob_TextLCD     *lcd;       // pointer to 2*16 character LCD object
FILE                *fp;        // pointer to uSD object

SDFileSystem sd(p5, p6, p7, p8, "sd");    //uSD pinout

// Digital I/O p11 to p20
DigitalIn Fq(p14);              // Digital frequency in for measurement
DigitalIn DS(p12);              // Digital switch input
DigitalIn DS_s(p13);            // Digital shutdown switch
DigitalOut WD_pulse_out(p11);   // Watchdog Pulse
DigitalOut led1(LED1);
DigitalOut led2(LED2);



// Analogue I/O p15 to p20
AnalogIn A1_(p15);              // Analogue input to be filtered
AnalogIn A2_(p16);              // Analogue input to be filtered

// Timer objects
//Ticker tick;                  // Clock timer for CycExec
Ticker ticker;
Timer timer;                    // Frequency Timer
Timer T5;                       // Timer for idle states

// Constant Declaration
const int SampFreq = 100;       // Sampling Frequency
const int WD = 6000;            // Watchdog pulse length

// Variable Declaration
int tck = 1;               // Used to define what task is called (CycExec)

int FqIn;                  // Frequency input boolean
float period;                 // Frequency timer variable (Frequency Check)
float freq;                   // Frequency return variable (Frequency Check)

int DSIn;                  // Switch Input boolean
int switch_state;

int WD_pulse;


float A1_in;                // Analogue 1 input variable
float A2_in;                // Analogue 2 input variable
float A1_val;                 // Analogue 1 return variable (Analogue In)
float A2_val;                 // Analogue 2 return variable (Analogue In)

int DS_sIn;              // Shutdown Switch
int error_code;             // Error code variable

int logcount;               // Keep track of log number



////////////////////////////////////////////////////////////////////////////////
//
// Main Program
//

void CycExec()
{
/*
    if(tck % 10 == 6) {         // Every Second (needs offset) freq
        //Task1();
    } else if(tck % 3 == 2) {  // Every 1/3 sec      Dig In
        Task2();
    } else if(tck % 20 == 7) {  // Every 2 sec       WD
        Task3();
    } else if(tck % 5 == 0) {  // Every 1/2 sec      Ana In
        Task4();
    } else if(tck % 20 == 1) {  // Every 2 sec      LCD
        Task5();
    } else if(tck % 5 == 3) {  // Every 0.5 sec     Error
        //    Task6();
    } else if(tck % 5 == 4) { // Every 1/2 sec      Log
        //    Task7();
    }
    //else{                   //                    S/D
    //    Task8();
    //}*/

    Task1();

    led2 = !led2;

    FqIn = Fq;
    DSIn = DS;
    A1_in = A1_;
    A2_in = A2_;
    DS_sIn = DS_s;
    WD_pulse_out = WD_pulse;

    tck++;

}


int main()
{
    // LCD Init
    par_port = new MCP23017(p9, p10, 0x40); // initialise 16-bit I/O chip
    par_port->config(0x0F00, 0x0F00, 0x0F00);

    lcd = new WattBob_TextLCD(par_port);    // initialise 2*26 char display
    par_port->write_bit(1,BL_BIT);          // turn LCD backlight ON

    lcd->cls(); // clear display



    // .csv log Init
    mkdir("/sd/logs", 0777);
    fp = fopen ("/sd/logs/log.txt", "w");       // Pointer to log file on uSD
    fprintf(fp, "Log of Frazer Legge's Embedded Software Assignment 2\n\n");

    ticker.attach(&CycExec, 1.0);          // Period set to 25ms

    while(1) {
        led1 = !led1;
        wait(0.2);
    }
}