File content as of revision 35:ef0921d9b5bd:

#include "mbed.h"
#include "rtos.h"
#include "SDFileSystem.h"
#include "button.h"
#include "buttonArray.h"
#include <string>
#include <iostream>
#include "emic2.h"

using namespace std;

// DEFINE I/O
PwmOut myservo(p21);
DigitalIn pb1 (p20);
PwmOut myservo2(p22);
DigitalIn pb2 (p19);
PwmOut myservo3(p23);
DigitalIn pb3 (p18);
PwmOut myservo4(p24);
DigitalIn pb4 (p17);
PwmOut myservo5(p25);
DigitalIn pb5 (p16);
PwmOut myservo6(p26);
DigitalIn pb6 (p15);

//DigitalOut led1(LED1);
//DigitalOut led3(LED3);
//DigitalOut led4(LED4);

//DigitalIn linpot(p9);
Serial pc(USBTX, USBRX);
SDFileSystem sd(p5, p6, p7, p8, "sd"); //SD card
//button button1(myservo, pb1, linpot);
button button1(myservo, pb1, 1);
button button2(myservo2, pb2, 2);
button button3(myservo3, pb3, 3);
button button4(myservo4, pb4, 4);
button button5(myservo5, pb5, 5);
button button6(myservo6, pb6, 6);

buttonArray buttonarr(button1, button2, button3, button4, button5, button6);

emic2 myTTS(p28, p27); //serial RX,TX pins to emic

// INITIALIZE VARIABLES
// add mode, reset buttons
int start = 0;
int submit = 0;
// Buttons begins in up state
int state = 0;
int state2 = 0;
int state3 = 0;
int state4 = 0;
int state5 = 0;
int state6 = 0;
int count = 0;

// THREADS

void button_thread()
{
    while(true) {
        state = button1.updateState();
        state6 = button6.updateState();

        //led4 = button1.getLp();
        Thread::wait(100); // wait till thread is done
    }
}

void button2_thread()
{
    while(true) {
        state2 = button2.updateState();
        Thread::wait(200); // wait till thread is done
    }
}

// thread for the custom button
void button3_thread()
{
    while(true) {
        state3 = button3.updateState();
        Thread::wait(200); // wait till thread is done
    }
}

// thread for the custom button
void button4_thread()
{
    while(true) {
        state4 = button4.updateState();
        Thread::wait(200); // wait till thread is done
    }
}

// thread for the custom button
void button5_thread()
{
    while(true) {
        state5 = button5.updateState();
        Thread::wait(200); // wait till thread is done
    }
}

// thread for the custom button
void button6_thread()
{
    while(true) {
        state6 = button6.updateState();
        Thread::wait(200); // wait till thread is done
    }
}

void submit_thread()
{
    Thread::wait(500); // wait till thread is done
}

void start_thread()
{
    // read pb_start
    // if 1
    start = 1;
    //pc.printf("start %d ", start);
    // else 0
    Thread::wait(500); // wait till thread is done
}


int main()
{
    // SETUP
    // pull up the pushbutton to prevent bouncing
    pb1.mode(PullUp);
    pb2.mode(PullUp);
    pb3.mode(PullUp);
    pb4.mode(PullUp);
    pb5.mode(PullUp);
    pb6.mode(PullUp);
    wait(.001);

    // servos begin at 30 degrees
    // replace with a button setup function
    buttonarr.setup();

    // PARSE INPUT FILE FOR LETTERS AND WORDS
    char delimiter = ',';
    // TODO: fix the letters
    string letter[2];
    string word[2];
    char check;
    string temp;
    string tempword = "";
    int counter = 0;
    FILE *fp = fopen("/sd/plan.txt", "r"); //create file
    if(fp == NULL) {
        //pc.printf("Could not open file for write\n");
    }
    check = fgetc(fp); //grabs a char from file
    while(check != '\n') {  //while not at the end of line for letters
        if((check == delimiter) && (temp.length() == 1)) {  //at a comma and have a letter stored
            letter[counter] = temp; //write letter
            //pc.printf("Letter: %s \n", letter[counter]);
            counter = counter + 1;  //increment counter
        } else {
            temp = check;   //store letter
        }
        check = fgetc(fp);  //grabs next char
    }
    counter = 0;    //reset counter
    check = fgetc(fp);  //grabs next char
    while(!feof(fp)) {  //while not at the end of line for words
        if(check == delimiter) {  //when at the comma at the end of a word
            word[counter] = tempword;   //write word
            //pc.printf("Word: %s \n", word[counter]);
            tempword = "";
            counter = counter + 1;  //increment counter
        } else {
            tempword = tempword + check;    //concatenate letters to build word
        }
        check = fgetc(fp);  //grabs next char
    }
    fclose(fp); //close file

    Thread t1(button_thread);
    Thread t2(button2_thread);
    Thread t3(button3_thread);
    Thread t4(button4_thread);
    Thread t5(button5_thread);
    //Thread t6(button6_thread);
    t1.start(button_thread);
    t2.start(button2_thread);
    t3.start(button3_thread);
    t4.start(button4_thread);
    t5.start(button5_thread);

    // when submitted
    //while (submit == 0) {}
    // start button threads and submit thread
    // if submit close button threads and submit thread
    // check result
    // play results on speaker
    // save results

    //TEXT-TO-SPEECH LOGIC
    myTTS.volume(18); //max volume
    myTTS.voice(2);

    myTTS.speakf("SWelcome to Bat, the Braille Assistive Teacher. This device will help you learn how to write and type braille.\r");  // Send the desired string to convert to speech
    myTTS.ready(); //ready waits for speech to finish from last command with a ":" response

    char* braille;
    char userinput;

    // INITIAL RESET
    int reset = 1;
    myTTS.speakf("SPlease setup the device by pressing down all the buttons.\r");
    myTTS.ready(); //ready waits for speech to finish from last command with a ":" response
    while(reset == 1) {
        sprintf(braille, "%d%d%d%d%d%d", button1.getPress(), button2.getPress(),
                button3.getPress(), button4.getPress(), button5.getPress(), button6.getPress());
        userinput = buttonarr.checkVal(braille);
        if(userinput == '!') {
            reset = 0;
        } else {
            reset = 0; // TODO: remove this line
            myTTS.speakf("SSetup failed. Please try again.\r");
            myTTS.ready(); //ready waits for speech to finish from last command with a ":" response
        }
    }

    int lettersize = sizeof(letter)/sizeof(letter[0]);

    for(int i = 0; i < lettersize; i++) {  //iterate through the letter array
        char currletter = letter[i][0];
        //pc.printf("letter: %c \n", currletter);
        int* pinsup = buttonarr.pinsUp(currletter);
        int currpress;
        int numpinsups = pinsup[0];  // size of array is first element of pinsup
        string presspin = "STo write the letter ";
        presspin = presspin + letter[i];
        presspin = presspin + ", press buttons";

        for (int j = 1; j < numpinsups; j++) {  // get what pins to press
            currpress = pinsup[j];
            switch (currpress) {
                case 1:
                    presspin = presspin + " 1,";
                    break;
                case 2:
                    presspin = presspin + " 2,";
                    break;
                case 3:
                    presspin = presspin + " 3,";
                    break;
                case 4:
                    presspin = presspin + " 4,";
                    break;
                case 5:
                    presspin = presspin + " 5,";
                    break;
                case 6:
                    presspin = presspin + " 6,";
                    break;
            }
        }
        myTTS.speakf("%s\r",presspin);
        myTTS.ready(); //ready waits for speech to finish from last command with a ":" response
        wait(1);

        //WORKS UP TO HERE

        // PARSE LETTERS
        sprintf(braille, "%d%d%d%d%d%d", button1.getPress(), button2.getPress(),
                button3.getPress(), button4.getPress(), button5.getPress(), button6.getPress());
        userinput = buttonarr.checkVal(braille);
        pc.printf(" %s ", braille);
        //pc.printf("userinput: %c", userinput);
        // get input
        //pc.printf("Your input was: %c", userinput);
        int currwrong;
        string wrongpin;
        // check result
        pc.printf("\n %c %c", userinput, currletter);
        int* wrongpins = buttonarr.wrongPins(braille, currletter);
        int test = 1;
        while(test == 1) {
            //pc.printf("In while loop");
            wrongpin = "SYour answer is incorrect. Buttons";
            for (int j = 1; j < wrongpins[0]; j++) {  // get what pins are wrong
                currwrong = wrongpins[j];
                //pc.printf("currwrong: %d", currwrong);
                switch (currwrong) {
                    case 1:
                        wrongpin = wrongpin + " 1,";
                        break;
                    case 2:
                        wrongpin = wrongpin + " 2,";
                        break;
                    case 3:
                        wrongpin = wrongpin + " 3,";
                        break;
                    case 4:
                        wrongpin = wrongpin + " 4,";
                        break;
                    case 5:
                        wrongpin = wrongpin + " 5,";
                        break;
                    case 6:
                        wrongpin = wrongpin + " 6,";
                        break;
                }
            }
            //pc.printf("end for loop");
            if (wrongpins[0] > 1) {
                wrongpin = wrongpin + " are wrong. Please try again.";
                myTTS.speakf("%s\r",wrongpin);
                myTTS.ready(); //ready waits for speech to finish from last command with a ":" response
                //UPDATE THE PINS THAT ARE WRONG BY CHECKING AGAIN BELOW
                sprintf(braille, "%d%d%d%d%d%d", button1.getPress(), button2.getPress(),
                        button3.getPress(), button4.getPress(), button5.getPress(), button6.getPress());
                userinput = buttonarr.checkVal(braille);
                // get input
                //pc.printf("Your input was: %c", userinput);

                // check result
                wrongpins = buttonarr.wrongPins(braille, currletter);
            } else {
                test = 0;
                myTTS.speakf("SGood job! Your answer is correct.\r");
                myTTS.ready(); //ready waits for speech to finish from last command with a ":" response
            }
        }
        reset = 1;
        myTTS.speakf("SNow reset the device by pressing down all the buttons.\r");
        myTTS.ready(); //ready waits for speech to finish from last command with a ":" response
        while(reset == 1) {
            sprintf(braille, "%d%d%d%d%d%d", button1.getPress(), button2.getPress(),
                    button3.getPress(), button4.getPress(), button5.getPress(), button6.getPress());
            userinput = buttonarr.checkVal(braille);
            if(userinput == '!') {
                reset = 0;
            } else {
                reset = 0; // TODO: remove this line
                myTTS.speakf("SSetup failed. Please try again.\r");
                myTTS.ready(); //ready waits for speech to finish from last command with a ":" response
            }
        }
    }

    // WORD CODE

    // WORD COUNTER
    // go through each word
    // go through each letter in the word
    // get user input
    // when buttons reset - save previous letter
    // loop until submit button is pressed
    // compare words
    // check what letters were wrong
    // give wrong letters - correct spelling is...
    /*
    string currword;
    int wordsize = sizeof(word)/sizeof(word[0]);

    myTTS.speakf("SLet us now put these letters together to form words. Please reset buttons after each letter. Press down the submit button when done.\r");  // Send the desired string to convert to speech
    myTTS.ready(); //ready waits for speech to finish from last command with a ":" response

    // loop through each of the words
    for(int i = 0; i < wordsize; i++) {  //iterate through the word array
        currword = word[i];
        presspin = "To type the word ";
        presspin = presspin + word[i];
        presspin = presspin + ", type letters ";
        for (int j = 0; j < currword.length(); j++) {
            presspin = presspin + ", "+ currword[j];
        }
        myTTS.speakf("S%s\r", presspin);
        myTTS.ready();

        string wordinput;

        // loop through each of the letters
        olduserinput;
        incorrect = 1;
        char userinput;
        char* braille;

        // while(!submit)
        while (incorrect) {
            // replace for loop with submit
            // while (!submit) {
            for (int j = 0; j < currword.length(); j++) {
                //currletter = currword[j];
                // check if all buttons were pressed
                wait(1);

                char* braille;
                char* oldbraille;
                
                // wait for input
                while (strcmp(braille, "000000") == 0) {}
                
                // while buttons have not been released
                while (strcmp(braille, "000000") != 0) {
                    oldbraille = braille;
                    sprintf(braille, "%d%d%d%d%d%d", button1.getPress(), button2.getPress(),
                            button3.getPress(), button4.getPress(), button5.getPress(), button6.getPress());
                } // at the end of this, braille contains the letter representation
                // flip braille values
                userinput = checkVal(braille);
                wordinput[j] = olduserinput;
            }

            // check result of words
            if (wordinput.compare(currword) == 0) { // input is correct
                incorrect = 0;
                myTTS.speakf("Good job!\r");
                myTTS.ready(); //ready waits for speech to finish from last command with a ":" response
            } else {
                incorrect = 0; // delete this line
                myTTS.speakf("SPlease try again!.\r");
                myTTS.ready(); //ready waits for speech to finish from last command with a ":" response
            }
        }*/


    // MAIN THREAD
    while(true) {
        Thread::wait(500); // wait till thread is done
    }
}