File content as of revision 1:8cad7e957324:

/*
#include "mbed.h"
#include <string>
#include <stdio.h>
#include <stdlib.h>

DigitalOut led1(LED1, 0);
DigitalOut led2(LED2, 0);
DigitalOut led3(LED3, 0);
DigitalOut led4(LED4, 0);
DigitalOut do21(p21, 0);

Serial pc(USBTX, USBRX);  // for PC debug
LocalFileSystem fs("local");

long double configData[3];
string strData[3];


//returns if the given character is a number or decimal point character
bool Is_Num_Char(char c)
{
    bool isChar = false;
    if((c >= '0' and c <= '9') or c == '.') {
        isChar = true;
    }
    return isChar;
}

//From: https://os.mbed.com/questions/83075/Is-it-possible-to-read-a-small-text-file/
//Reads config.txt from local drive
bool Print_Config()
{
    bool flg_error;
    printf("Opening file 'config.txt'... ");
    FILE*   fp = fopen("/local/config.txt", "r");
    printf("%s\n\r", (!fp ? "Fail :(" : "OK"));
    if (!fp) {
        error("error: %s (%d)\n", strerror(errno), -errno);
        flg_error = 1;
    }
    while (!feof(fp)) {
        int c = fgetc(fp);
        printf("%c", c);
    }

    fclose(fp);
    printf("\r\n===========\r\n");
    return flg_error;
}

//Reads reads and converts data from config file
void Get_Config_data()
{
    printf("Get Config data\r\n");
    FILE*   fp = fopen("/local/config.txt", "r");
    int c;
    char stateData = 0; //which data it is reading on duration, off duration e.t.c.
    char stateRead = 0; //0 = parsing, 1 = reading data
    char* pEnd;
    string data;

    while (!feof(fp)) {
        c = fgetc(fp);
        if (Is_Num_Char(c)) {
            data.push_back(c);
            stateRead = 1;
            c = NULL;
        } else if (stateRead == 1) {
            //convert to double and add to Data
            strData[stateData] = data;
            configData[stateData] = strtod(data.c_str(), &pEnd);
            data.clear();
            stateData++;
            stateRead = 0;
        }
    }

    fclose(fp);

    //configData[0] = configData[0] /10; //wait functions
    //configData[2] = configData[2] /10;

}


//init function
void init()
{

    Print_Config();
    //Get_Config_data();
}

int main()
{
    printf("STARTING\r\n");
    init();
    //printf("Strings: On: %s, repeat: %s, Off: %s \r\n", strData[0].c_str(),strData[1].c_str(), strData[2].c_str() );
    //printf("Data: %Lf, %Lf, %Lf\r\n",configData[0]*10,configData[1],configData[2]*10); //multiplying back to real values




    printf("END \r\n");
    return 0;
}
*/


#include "mbed.h"
#include <string>
#include <stdio.h>
#include <stdlib.h>

DigitalOut led1(LED1);
DigitalOut led2(LED2);
DigitalOut led3(LED3);
DigitalOut led4(LED4);
DigitalOut do21(p21);
InterruptIn di22(p22,PullDown); //removing di22 and its related calls and functions causes a major fault for unknown reasons so it has been left in dispite not being used.

Serial pc(USBTX, USBRX);  // for PC debug
LocalFileSystem fs("local");

bool flg_start = 0;
bool flg_END = false;
long double configData[3];
string strData[3];

//returns if the given character is a number or decimal point character
bool Is_Num_Char(char c)
{
    bool isChar = false;
    if((c >= '0' and c <= '9') or c == '.') {
        isChar = true;
    }
    return isChar;
}

//From: https://os.mbed.com/questions/83075/Is-it-possible-to-read-a-small-text-file/
//Reads config.txt from local drive
bool Print_Config()
{
    bool flg_error;
    printf("Opening file 'config.txt'... ");
    FILE*   fp = fopen("/local/config.txt", "r");
    printf("%s\n\r", (!fp ? "Fail :(" : "OK"));
    if (!fp) {
        error("error: %s (%d)\n", strerror(errno), -errno);
        flg_error = 1;
    }
    while (!feof(fp)) {
        int c = fgetc(fp);
        printf("%c", c);
    }

    fclose(fp);
    printf("\r\n===========\r\n");
    return flg_error;
}

//Reads reads and converts data from config file
void Get_Config_data()
{
    printf("Get Config data\r\n");
    FILE*   fp = fopen("/local/config.txt", "r");
    int c;
    char stateData = 0; //which data it is reading on duration, off duration e.t.c.
    char stateRead = 0; //0 = parsing, 1 = reading data
    char* pEnd;
    string data;

    while (!feof(fp)) {
        c = fgetc(fp);
        if (Is_Num_Char(c)) {
            data.push_back(c);
            stateRead = 1;
            c = NULL;
        } else if (stateRead == 1) {
            //convert to double and add to Data
            strData[stateData] = data;
            configData[stateData] = strtod(data.c_str(), &pEnd);
            data.clear();
            stateData++;
            stateRead = 0;
        }
    }

    fclose(fp);


}

// Runs wait functions and divides by 10 to account for error in function
// unused as calling function causes too much of a delay when below miliseconds
void wait_fixed(float t)
{
    thread_sleep_for(t / 10);
}


//Flips output
void run_Cycle()
{
    //printf("On \r\n");
    do21 = 1;
    led1 = 1;
    thread_sleep_for(configData[0]);

    //printf("Off \r\n");
    do21 = 0;
    led1 = 0;
}

//interrupt function to start cycling
void start()
{
    flg_start = 1;
}

//init function
void init()
{
    do21 = 0;
    di22.rise(&start);
    Print_Config();
    Get_Config_data();
}

void cycle_loop()
{
    while(1) {
        run_Cycle();
        thread_sleep_for(configData[2]);
    }
}

void serial_mode()
{
    bool flg_read = true;
    string str;
    char c;
    pc.baud(9600);
    pc.printf("Serial Mode\n\r");
    while(flg_read) {
        c = pc.getc();
        pc.putc(c);
        if (c == '\n') {
            if (str == "on\r") {
                do21 = 1;
                led1 = 1;
                pc.printf("power on\r\n");

            } else if (str == "off\r") {
                do21 = 0;
                led1 = 0;
                pc.printf("power off\r\n");

            } else if (str == "cycle\r") {
                run_Cycle();
                pc.printf("cycled\r\n");

            } else if(str == "cycle2\r") {
                pc.printf("clycle loop, power cycle box to stop\r\n");
                cycle_loop();

            } else if( str == "exit\r") {
                flg_read = false;
            } else {
                pc.printf("unknown command, see README for command list\r\n");
            }
            str = "";
        } else {
            str.push_back(c);
        }
    }
    pc.printf("exit serial mode \r\n");
}


int main()
{
    int Mode;
    printf("STARTING\r\n");
    init();
    printf("Strings: On: %s, repeat: %s, Off: %s \r\n", strData[0].c_str(),strData[1].c_str(), strData[2].c_str() );
    printf("Data: %Lf, %Lf, %Lf\r\n",configData[0],configData[1],configData[2]);

    while(!flg_END) {
    Mode = (int)configData[1];
        if(Mode == 0) {
            run_Cycle();
        } else if(Mode == 1) {
            cycle_loop();
        } else if(Mode == 2) {
            serial_mode();
            Get_Config_data();
            printf("Data: %Lf, %Lf, %Lf\r\n",configData[0],configData[1],configData[2]);

        } else {
            printf("Invalid Mode");
        }
    }

    printf("END \r\n");
    return 0;
}