Subversion Repositories group.electronics

/*
 * atcpad.c
 *
 * Created: 7/06/2013 10:15:34 PM
 *  Author: pfowler
 */ 


#include <avr/io.h>
#include <avr/pgmspace.h>
#include <avr/interrupt.h>

#include <util/delay.h>
#include <avr/wdt.h>
#include "usbdrv.h"

#include "atcpad.h"
#include "avrutil.h"
#include "lcd.h"
#include "wire.h"
#include "hiddesc.h"

#define BUTTONS 1
#define ON              1
#define OFF             0

// * = 0x25, #=0x20
// F9 = 0x42, F12 = 0x45
uint8_t keyMap[] = {    0x1E, 0x1F, 0x20,
                                                0x21, 0x22, 0x23,
                                                0x24, 0x25, 0x26,
                                                0x42, 0x27, 0x45 };
uint8_t keySelect = 1;
uint8_t lcdRectangle[] = {   
        0B00011111,
        0B00010001,
        0B00010001,
        0B00010001,
        0B00010001,
        0B00010001,
        0B00010001,
        0B00011111 };

uint8_t getKey(void);

volatile struct {
        uint8_t detected;
        uint8_t timer;
        uint8_t debounced;
} buttons[BUTTONS];

int main(void)
{
        
        setup();
        
    while(1)
    {
        loop(); 
    }
}

void setup() {
        /*
                DDR : 1 = Output, 0 = Input
                PORT: 1 = Pullup for Input, otherwise set output
                PIN : Read input pin
        */

        /*
                PB0     - Output                - Keypad 2
                PB1     - Output                - Keypad 7
                PB2     - Output                - Keypad 6
                PB3     - Output                - Keypad 4
                PB4     - Input, Pullup         - Function select
                PB5     - Input, Pullup         - Function select
        */
        DDRB            = 0B00001111;
        PORTB   = 0B00111111;

        /*
                PD0     - Input, Pullup, PCINT16        - Rotary 1a
                PD1     - Input, Pullup, PCINT17        - Rotary 1b


                PD4     - Output                - Keypad select status led
                PD5     - Input, Pullup         - Keypad 3
                PD6     - Input, Pullup         - Keypad 1
                PD7     - Input, Pullup         - Keypad 5
        */
        DDRD            = 0B00010000;
        PORTD           = 0B11110011;

        PCMSK2 |= (( 1 << PCINT16 ) | ( 1 << PCINT17 )); //enable encoder pins interrupt sources
        PCICR |= ( 1 << PCIE2 ); //enable pin change interrupts
        
        analogInit();
        sysclockInit();
        
        reportKeyboard.report_id = 1;
        reportJoystick.report_id = 2;   
        
        usbDeviceDisconnect();  /* enforce re-enumeration, do this while interrupts are disabled! */
        _delay_ms(500);
        usbDeviceConnect();

        wdt_enable(WDTO_1S);
        usbInit();
        usbPoll();

        sei();
        i2c_master();
        lcd_init();
        lcd_createChar(0x00, lcdRectangle);
        usbPoll();

        char strTime[] = {'T', 'i', 'm', 'e', ':', 0x00};
        lcd_setCursor(0, 1);
        lcd_print(strTime);
                
}

void loop() {
    
        if(usbInterruptIsReady()){
            reportJoystick.data1[0] = (-128 + analogRead(0));
            reportJoystick.data1[1] = (-128 + analogRead(1));
            reportJoystick.data2 = 0x0000;                              // Clear all the buttons

            reportKeyboard.modifier = 0x00;
            reportKeyboard.keycode = 0x00;

            uint8_t key = getKey();
            if (rbi(keySelect, 0)) {
                    // Keypad is joystick
                    if (key > 0)
                                reportJoystick.data2 |= (1 << (--key));
                    } else {
                    // Keypad is keyboard
                    if (key > 0) {
                            //if (key==10 || key==12) // Left shift, for *, #
                            //  reportKeyboard.modifier |= (1<<1);
                            reportKeyboard.keycode = keyMap[--key];
                    }
            }
            usbSendHidReport((uchar*)&reportKeyboard, sizeof(reportKeyboard));
            usbSendHidReport((uchar*)&reportJoystick, sizeof(reportJoystick));
    }   
}

uint8_t getKey() {
        uint8_t col, row = 0;
        uint8_t key = 0;
        uint8_t n = 1;

        for (row=0; row<=3; row++) {
                cbi(PORTB, row);
                _delay_us(10);                          // Wait for the port to change

                for (col=5; col<=7; col++) {
                        if (rbi(PIND, col) == 0)
                        key = n;
                        n++;
                }

                sbi(PORTB, row);
        }
        return key;
}

void millis_tick() {
        if (buttons[0].detected && buttons[0].timer)
                buttons[0].timer--;
        
        //lcdupdate = 1;
}

ISR(TIMER0_OVF_vect) {
        tmr0_ovf++;
        if (tmr0_ovf>=sys_ovf_tick) {
                systime++;
                tmr0_ovf = 0;
                millis_tick();
        }
}

void usbSendHidReport(uchar * data, uchar len) {
        while(1)
        {
                usbPoll();
                if (usbInterruptIsReady())
                {
                        usbSetInterrupt(data, len);
                        break;
                }
        }
}

usbMsgLen_t usbFunctionSetup(uchar data[8]) {
        usbRequest_t *rq = (void *)data;

        if((rq->bmRequestType & USBRQ_TYPE_MASK) == USBRQ_TYPE_CLASS) {
                switch (rq->bRequest) {
                        case USBRQ_HID_GET_REPORT:
                        if (rq->wValue.bytes[0] == 1)
                        return sizeof(reportKeyboard);
                        else if (rq->wValue.bytes[0] == 2)
                        return sizeof(reportJoystick);
                        else
                        return 0;
                        case USBRQ_HID_GET_IDLE:
                        usbMsgPtr = &idleRate;
                        return 1;
                        
                        
                        
                        default:
                        return 0;
                }
        }
        return 0;
}

void hadUsbReset(void) {
}