File content as of revision 10:098c2fa0a1a6:

/*   ELEC351 COURSEWORK 2018 
DESIGNED USING MBED ONLINE COMPILER IMPORTED TO KEIL
LIAM GRAZIER // DOUG TILLEY // ALEX BARON 
 */
#include "mbed.h"
#include "components.hpp"
#include "lglcd.h"
#include "time.h"
#include "stdio.h"
#define RED_DONE 1
#define YELLOW_DONE 2
//setup i/o
DigitalIn onBoardSwitch(USER_BUTTON);
DigitalOut onBoardLED(LED1);
DigitalOut redLED(PE_15);
DigitalOut yellowLED(PB_10);
DigitalOut greenLED(PB_11);
DigitalIn  SW1(PE_12);
DigitalIn  SW2(PE_14);
AnalogIn adcIn(PA_0);
//sd block class init
SDBlockDevice sd(PB_5, D12, D13, D10);// miso, sclk, cs 
//setup mutex locks
Mutex Lock1;
Mutex Lock2;
Mutex Remove;
//time setup start
time_t rawtime;
struct tm * timeinfo;
int year, month ,day, hour, minute, second;
char input = 0; 
char jtime[32];
char jdate[32];
char jdate1[32];
//time setup end 
//temp,pres sensor setup.
#ifdef BME
BME280 sensor(D14, D15);
#else
BMP280 sensor(D14, D15);
#endif
//lcd init from my class/
lglcd mylcd(D7,D6,D5,D4,D3,D2);
void runanalysis(void) //task gets data, converts and prints to lcd
{
    while(1)
    {     
        Lock1.lock();
        double temp = sensor.getTemperature(); //get temp
        double pressure = sensor.getPressure(); //get pressure
        double lightin = adcIn; //get light as a number 0-1 range 
        //storage for the above three lines for later conversion
        char TEM[6];
        char PRE[5];  
        char LIGHT[6];
        //conversion from double floats to a Chars 
        sprintf(TEM,"%.2f", temp);
        sprintf(PRE,"%.2f", pressure);
        sprintf(LIGHT,"%.2f", lightin);
        mylcd.setline(1,1);
        mylcd.write("L:");
        //below if's for determining light levels 
        if(lightin > 0.7 && lightin < 0.9) 
        {
            mylcd.setline(1,4);
            mylcd.write("|||||||||MAX");    
        }
        else if(lightin > 0.55 && lightin < 0.69)
        {
            mylcd.setline(1,4);
            mylcd.write("|||||||     ");
        }
        else if(lightin > 0.5 && lightin < 0.54)
        {
            mylcd.setline(1,4);
            mylcd.write("|||||       ");
        }
        else if(lightin > 0.4 && lightin < 0.54)
        {
            mylcd.setline(1,4);
            mylcd.write("|||         ");
        }
        else if(lightin > 0.3 && lightin < 0.39)
        {
            mylcd.setline(1,4);
            mylcd.write("||          ");
        } 
        else if(lightin > 0.06 && lightin < 0.29)
        {
            mylcd.setline(1,4);
            mylcd.write("LOW LIGHT    ");
        } 
        else if(lightin < 0.05)
        {
            mylcd.setline(1,4);
            mylcd.write("             ");
            mylcd.setline(1,4);
            mylcd.write("disconnected"); //LDR most likely connected 
        }
        mylcd.setline(2,1);
        mylcd.write("P:");
        mylcd.write(PRE);
        mylcd.setline(2,10);
        mylcd.write("T:");
        mylcd.write(TEM);
        wait(0.01);
        Lock1.unlock();
        Thread::signal_wait(SIG_READY); //singal thread triggered by ticker 
    }
}
void sdwipe(void)//sd delete function
{ 
    while(1)
    {
        Lock2.lock();
time_t seconds = time(NULL);
char prefix[4];
char jdate2[32];
strcpy(prefix,"/sd/");
strftime(jdate1, 32, "%F", localtime(&seconds));
strftime(jdate, 32, "%F\n\r", localtime(&seconds));
strftime(jtime, 32, "%X\n\r", localtime(&seconds));
sprintf(jdate2,"%s%s",prefix,jdate1);
FATFileSystem fs("sd", &sd);
char filename[32];
char suffix[4];
strcpy(suffix,".txt");
sprintf(filename,"%s%s",jdate2,suffix); //calculates filename to be used using date
FILE* fp = fopen(filename,"w");//w overwrites file (deleteing) with a blank string 
    if (fp == NULL) {
        errorCode(FATAL);
        printf("SD FAIL\n\r");
        mylcd.clear();
        mylcd.setline(1,0);
        mylcd.write("SD FAIL");
    }
    if (fp != NULL){
    printf("ALL RECORDS DELETED FROM SD\n\r");
    fprintf(fp,"%s" "\n\r"); //blank string in for blank placehold 
    wait(0.01);
    break;
    }
    break;
    fclose(fp);      //close file 
}
}
void sdwrite(void) //write data to SD 
{
    while(1)
    {
        Lock2.lock();
        time_t seconds = time(NULL);
        char prefix[4];
        char jdate2[32];
        //conversions for time / floats to strings 
        strcpy(prefix,"/sd/");
        strftime(jdate1, 32, "%F", localtime(&seconds));
        strftime(jdate, 32, "%F\n\r", localtime(&seconds));
        strftime(jtime, 32, "%X\n\r", localtime(&seconds));
        sprintf(jdate2,"%s%s",prefix,jdate1);
        FATFileSystem fs("sd", &sd);
        Lock1.lock();
        //get data 
        double P = sensor.getPressure();
        double L = adcIn;
        double t = sensor.getTemperature();
        //create datastores
        char filename[32];
        char suffix[4];
        char tem[6];
        char pre[5];  
        char light[6];
        char com[1];
        //convert to data store
        strcpy(com, ",");
        sprintf(pre,"%.2f", P);
        sprintf(tem,"%.2f",t);
        sprintf(light,"%.2f\n\r", L);
        strcpy(suffix,".txt");
        Lock1.unlock();
        Lock1.lock();
        //calculate filename
        sprintf(filename,"%s%s",jdate2,suffix);
        Lock1.unlock();
        FILE* fp = fopen(filename,"a"); //open file
        if (fp == NULL) //if sd file empty (NOT ABLE TO OPEN FILE)
        {
            errorCode(FATAL);
            printf("SD FAIL\n\r");
            mylcd.clear();
            mylcd.setline(1,0);
            mylcd.write("SD FAIL");
        }
        if (fp != NULL) //if sd IS NOT empty (ABLE TO OPEN FILE)
        {
            char sdbuf[64];//buffer for write to SD 
            sprintf(sdbuf,"%s%s%s%s%s%s%s%s%s\n\r",jdate,com,jtime,com,pre,com,tem,com,light); //conversion of all data for print to char 
            fprintf(fp,"%s",sdbuf); //print the char converted above
            wait(0.01);//small wait
        }
        fclose(fp);      //close file
        Lock2.unlock(); 
        Thread::signal_wait(SIG_READY2); //thread signal from ticket in main    
    }
}
void sdrun(void) //task for checking the SD card is In and init. 
{
    if ( sd.init() != 0)  //if sd not initaliseed 
    {
        printf("Init failed\n\r");
        mylcd.clear();
        mylcd.setline(1,1);
        mylcd.write("CANNOT INIT SD");        
        errorCode(FATAL);
    }
    if( sd.init() == 0) //if sd is initalised (BLOCKING IF NOT AS NO RETURN FUNCTION)
    {
        printf("Init Success \n\r");
        mylcd.clear();
        mylcd.setline(1,1);
        mylcd.write("SD GOOD MAN");
        wait(0.5); //flash the SD error / good code! 
    }
}
void sdcheck(void) //same as sdrun blocking but enables error codes also. 
{
    if(sd.init() != 0)
    {
        printf("Init failed \n\r");
        mylcd.clear();
        mylcd.setline(1,1);
        mylcd.write("CANNOT INIT SD\n\r");        
        errorCode(FATAL);
    }
    if( sd.init() == 0)
    {
    //printf("SD Good\n\r"); //used for debugging
    }
}
void sdremove(void) //sd card removal (triggered by interrupt)
{
    while(1)
    {
        Thread::signal_wait(SIG_REMOVE); //singal triggered by ticker in main 
        mylcd.clear();  
        Remove.lock();
        sd.deinit(); //denit the sd (SAFE TO REMOVE)
        mylcd.clear();
        Lock1.lock();
        mylcd.setline(2,0);
        greenLED = 1;
        mylcd.write("R"); //write a R character to empty placehold on the LCD indicating safe to remove. 
        Lock1.unlock();
        printf("SD REMOVED\n\r");
        errorCode(FATAL); //Fire LEDS to indicate 
        Remove.unlock();
    }
}
void lcdstart(void) //task for testing LCD on start of code. 
{
    mylcd.clear();
    mylcd.setline(1,1);
    mylcd.write("INIT. SYSTEM");
    mylcd.setline(2,1);
    mylcd.write("ELEC351");
}
void errorCode(ELEC350_ERROR_CODE err) //nicks error code from sample 
{
    switch (err)
    {
        case OK:
        greenLED = 1;
        wait(1.0);
        greenLED = 0;
        return;                
        case FATAL:
        while(1) 
        {
            redLED = 1;
            wait(0.1);
            redLED = 0;
            wait(0.1);                
        }
    }
}
void DispTime(void) //gets time from epoc and converts and prints. 
{
    time_t Count = time(NULL);                      //Read the RTC Time
    printf("Current Time - %s\n\r", ctime(&Count)); //Print the current time
}
void setuptime(void) //setupp and init time function 
{
    /*Initialising the time for our program to easy edit*/
    time ( &rawtime );
    timeinfo = localtime ( &rawtime );
    time ( &rawtime );
    timeinfo = localtime ( &rawtime );  
}
void runtime(void) //edit time function called in serial 
{
    while(1) //When added to the main code this will be changed to a while "SETDATE"
    {  
        /*promts the user to input which edit they would like*/
        printf ("What part do you want to edit? Time(T)/All(A).\n\r"); 
        fflush(stdout); 
        scanf ("%s",&input);
        /*Switch case input*/
        switch(input)
        {
        case 'T': 
            //Sequential Entering, Hour, Minute, Second respectively
            printf ("Enter hour:(00-23) \n\r"); 
            fflush(stdout); 
            scanf ("%d",&hour);
            printf ("Enter minute:(00-59) \n\r"); 
            fflush(stdout); 
            scanf ("%d",&minute);
            printf ("Enter second:(00-59) \n\r"); 
            fflush(stdout); 
            scanf ("%d",&second);
        break;
        /*Case A ----- All values Update sequence*/
        case 'A':
            printf ("Enter year:(0-9999) \n\r"); fflush(stdout); scanf ("%d",&year);
            printf ("Enter month:(01-12) \n\r"); fflush(stdout); scanf ("%d",&month);      
            printf ("Enter day:(01-31) \n\r"); fflush(stdout); scanf ("%d",&day);
            printf ("Enter hour:(00-23)\n\r"); fflush(stdout); scanf ("%d",&hour);
            printf ("Enter minute:(00-59) \n\r"); fflush(stdout); scanf ("%d",&minute);
            printf ("Enter second:(00-59) \n\r"); fflush(stdout); scanf ("%d",&second);
        break;
        /*default to reset ----- Month Update sequence*/
        default:
            printf  ("Invalid\n\r");
            set_time(1515513600);
        }  
        /*Updating all the timings after the user has input all the data*/
        /*Put here as once the user has finished editing it does a batch update*/
        timeinfo->tm_year = year - 1900;
        timeinfo->tm_mon = month - 1;
        timeinfo->tm_mday = day;
        timeinfo->tm_hour = hour;
        timeinfo->tm_min = minute;
        timeinfo->tm_sec = second;
        time_t CurrTime = mktime(timeinfo); //Convert the to UNIX time
        set_time(CurrTime);                 //Sets time using the UNIX time
        DispTime();  
        return;                       //Display the new time
    }
}
void rundate(void)//setup date function 
{
    while(1) //When added to the main code this will be changed to a while "SETDATE"
        {
            /*promts the user to input which edit they would like*/
            printf ("What part do you want to edit? Date(D)/All(A).\n\r"); 
            fflush(stdout); 
            scanf ("%s",&input);
            /*Switch case input*/
            switch(input)
            {
                /*Case D ----- Date Update sequence*/  
                case 'D': 
                    //Sequential Entering, Day, Month, Year respectively 
                    printf ("Enter day:(01-31) \n\r"); 
                    fflush(stdout); 
                    scanf ("%d",&day); 
                    printf ("Enter month:(01-12) \n\r"); 
                    fflush(stdout); 
                    scanf ("%d",&month);
                    printf ("Enter year:(1970-9999) \n\r"); 
                    fflush(stdout); 
                    scanf ("%d",&year);                       
                break;    
                /*Case A ----- All values Update sequence*/
                case 'A':
                    printf ("Enter year:(0-9999) \n\r"); fflush(stdout); scanf ("%d",&year);
                    printf ("Enter month:(01-12) \n\r"); fflush(stdout); scanf ("%d",&month);      
                    printf ("Enter day:(01-31) \n\r"); fflush(stdout); scanf ("%d",&day);
                    printf ("Enter hour:(00-23)\n\r"); fflush(stdout); scanf ("%d",&hour);
                    printf ("Enter minute:(00-59) \n\r"); fflush(stdout); scanf ("%d",&minute);
                    printf ("Enter second:(00-59) \n\r"); fflush(stdout); scanf ("%d",&second);
                break;
                /*default to reset ----- Month Update sequence*/
                default:
                    printf  ("Invalid\n\r");
                    set_time(1515513600);
            }  
            /*Updating all the timings after the user has input all the data*/
           /*Put here as once the user has finished editing it does a batch update*/
            timeinfo->tm_year = year - 1900;
            timeinfo->tm_mon = month - 1;
            timeinfo->tm_mday = day;
            timeinfo->tm_hour = hour;
            timeinfo->tm_min = minute;
            timeinfo->tm_sec = second;
            time_t CurrTime = mktime(timeinfo); //Convert the to UNIX time
            set_time(CurrTime);                 //Sets time using the UNIX time
            DispTime();  
            return;                       //Display the new time
        }
}