Lab 4-2 State only PIC

    /*
        switch( state ){
            case 'A':
                SerialTransmit("A\r\n");
                if(PORTDbits.RD2 == 0){ state = 'B'; }
                break;
            case 'B':
                SerialTransmit("B\r\n");
                if(PORTDbits.RD2 == 1){
                    changeState++;
                    if(changeState >= 1000){
                        state       = 'C';
                        changeState = 0;
                    }
                }
                break;
            case 'C':
                //SerialTransmit("C\r\n");
                // LED on
                LATDbits.LATD1 = 1;  //  writing 1 to pin RD1
                // ADC  channelA, Read form AN0 -- PIN 25
                AD1CON1SET = 0x0002;         // start sampling ...
                _delay(100*US_TO_CT_TICKS);   // for 50 uS
                AD1CON1CLR = 0x0002;         // start Converting
                while (!(AD1CON1 & 0x0001)); // conversion done?
                channel0   = ADC1BUF0;       // yes then get ADC value
                // save into EEPROM...
                // ...
                // ...

                if( countR >= 300){
                    state  = 'E';
                    countR = 0;
                }
                else{
                    StartTime = ReadCoreTimer();  // Get CoreTimer value for StartTime
                    state = 'D';
                    sprintf(buf, "save into EEPROM...%d\r\n", countR);
                }
                break;
            case 'D':
                SerialTransmit(buf);
                // LED off
                LATDbits.LATD1 = 0;  //  writing 0 to pin RD1
                // ...wait 1 second
                if( ReadCoreTimer() - StartTime >=  Time1S ){
                    state = 'C';
                    countR++;
                }
                break;
            case 'E':
                SerialTransmit("E\r\n");
                if(PORTDbits.RD2 == 0){ state = 'F'; }
                break;
            case 'F':
                SerialTransmit("F\r\n");
                if(PORTDbits.RD2 == 1){
                    changeState++;
                    if(changeState >= 1000){
                        state = 'G';
                        changeState = 0;
                    }
                }
                break;
            case 'G':
                // Read data form EEPROM

                // sent data use UART
                sprintf(buf, "%d\r\n", channel0);
                SerialTransmit(buf);
                // LED off
                LATDbits.LATD1 = 0;  //  writing 0 to pin RD1
                state = 'A';
                break;
        }

         */