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98 pfowler 1 
/*
2 
 * atcpad.c
3 
 *
4 
 * Created: 7/06/2013 10:15:34 PM
5 
 *  Author: pfowler
6 
 */
7 
 
8 
 
33 pfowler 9 
#include <avr/io.h>
10 
#include <avr/pgmspace.h>
11 
#include <avr/interrupt.h>
12 
 
13 
#include <util/delay.h>
14 
#include <avr/wdt.h>
100 pfowler 15 
#include <stdlib.h>
16 
#include <string.h>
17 
 
98 pfowler 18 
#include "usbdrv.h"
19 
#include "atcpad.h"
20 
#include "avrutil.h"
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#include "lcd.h"
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#include "wire.h"
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#include "hiddesc.h"
24 
 
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#define BUTTONS	 		1
26 
#define ROTARYS			1
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#define LCD_UPDATE		11
29 
#define	ROTARY_UPDATE	5
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102 pfowler 31 
void pcInterrupt(uint8_t);
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uint8_t getKey(void);
33 
void updateLcd();
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void checkRotarys();
35 
void checkButtons(void);
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// * = 0x25, #=0x20
39 
// F9 = 0x42, F12 = 0x45
40 
uint8_t keyMap[] = { 	0x1E, 0x1F, 0x20,
41 
						0x21, 0x22, 0x23,
42 
						0x24, 0x25, 0x26,
43 
						0x42, 0x27, 0x45 };
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uint8_t lcdRectangle[] = {
46 
	0B00011111,
47 
	0B00010001,
48 
	0B00010001,
49 
	0B00010001,
50 
	0B00010001,
51 
	0B00010001,
52 
	0B00010001,
53 
	0B00011111 };
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55 
 
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uint8_t oldpotVal = 0;
57 
uint8_t keySelect = 1;
58 
 
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// Start these of at different times, so they
60 
//  don't kick of it the same loop run
61 
volatile uint8_t lcdTimer = 8;
62 
volatile uint8_t rotaryTimer = 5;
63 
 
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volatile struct {
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        uint8_t current;
66 
        uint8_t last;
67 
        uint8_t mask;
68 
} pcInt[3];
69 
 
70 
volatile struct {
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	uint8_t detected;
72 
	uint8_t timer;
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	uint8_t waitup;
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} buttons[BUTTONS];
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volatile struct {
77 
 
78 
	union {
79 
		uint8_t data;
80 
		struct {
81 
			uint8_t stat:4;
82 
			uint8_t sent:4;
83 
		};
84 
	};
85 
} rotary[ROTARYS];
86 
 
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int main(void)
88 
{
89 
 
90 
	setup();
91 
 
92 
    while(1)
93 
    {
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		wdt_reset();
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        loop();
96 
    }
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}
98 
 
98 pfowler 99 
void setup() {
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	/*
101 
		DDR : 1 = Output, 0 = Input
102 
		PORT: 1 = Pullup for Input, otherwise set output
103 
		PIN : Read input pin
104 
	*/
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	/*
107 
		PB0	- Output 		- Keypad 2
108 
		PB1	- Output 		- Keypad 7
109 
		PB2	- Output 		- Keypad 6
110 
		PB3	- Output 		- Keypad 4
111 
		PB4	- Input, Pullup		- Function select
112 
		PB5	- Input, Pullup		- Function select
113 
	*/
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	DDRB	= 0B00001111;
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	PORTB 	= 0B00111111;
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	/*
118 
		PD0	- Input, Pullup, PCINT16	- Rotary 1a
119 
		PD1	- Input, Pullup, PCINT17	- Rotary 1b
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121 
 
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		PD4	- Output		- Keypad select status led
123 
		PD5	- Input, Pullup		- Keypad 3
124 
		PD6	- Input, Pullup		- Keypad 1
125 
		PD7	- Input, Pullup		- Keypad 5
126 
	*/
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	DDRD	= 0B00010000;
128 
	PORTD	= 0B11110011;
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	PCMSK2 |= (( 1 << PCINT16 ) | ( 1 << PCINT17 )); //enable encoder pins interrupt sources
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	PCICR |= ( 1 << PCIE2 ); //enable pin change interrupts
132 
 
133 
	analogInit();
134 
	sysclockInit();
135 
 
136 
	reportKeyboard.report_id = 1;
137 
	reportJoystick.report_id = 2;
138 
 
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	usbDeviceDisconnect();  /* enforce re-enumeration, do this while interrupts are disabled! */
140 
	_delay_ms(500);
141 
	usbDeviceConnect();
33 pfowler 142 
 
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	sei();
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	wdt_enable(WDTO_1S);
145 
	usbInit();
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	i2c_master();
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	lcd_init();
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	lcd_createChar(0x00, lcdRectangle);
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	char strTime[] = {'T', 'i', 'm', 'e', ':', 0x00};
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	lcd_setCursor(0, 1);
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	lcd_print(strTime);
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155 
	buttons[0].detected = 0;
156 
	buttons[0].timer = 0;
157 
	buttons[0].waitup = 0;
158 
 
159 
	cbi(PORTD, 4);
98 pfowler 160 
 
161 
}
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98 pfowler 163 
void loop() {
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   	usbPoll();
166 
 
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	if (lcdTimer==0) {
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		updateLcd();
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		lcdTimer = LCD_UPDATE;
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	}
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172 
 
173 
	if (rotaryTimer==0) {
174 
		checkRotarys();
175 
		rotaryTimer = ROTARY_UPDATE;
176 
	}
177 
 
102 pfowler 178 
 
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	checkButtons();
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181 
 
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	if(usbInterruptIsReady()){
183 
	    usbSendHidReport((uchar*)&reportKeyboard, sizeof(reportKeyboard));
184 
	    usbSendHidReport((uchar*)&reportJoystick, sizeof(reportJoystick));
100 pfowler 185 
    }
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}
187 
 
188 
uint8_t getKey() {
189 
	uint8_t col, row = 0;
190 
	uint8_t key = 0;
191 
	uint8_t n = 1;
192 
 
193 
	for (row=0; row<=3; row++) {
194 
		cbi(PORTB, row);
195 
		_delay_us(10);				// Wait for the port to change
196 
 
197 
		for (col=5; col<=7; col++) {
198 
			if (rbi(PIND, col) == 0)
98 pfowler 199 
			key = n;
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			n++;
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		}
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203 
		sbi(PORTB, row);
204 
	}
205 
	return key;
206 
}
207 
 
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void checkRotarys() {
209 
	uint8_t rot = 0;
210 
	for (rot=0; rot<=(ROTARYS - 1); rot++) {
211 
		if (rotary[rot].stat == 0x01 && rotary[rot].sent == 0) {
212 
			rotary[rot].sent = 1;
213 
			switch (rot) {
214 
				case(0):        reportJoystick.rot1a = 1; break;
215 
				case(1):        reportJoystick.rot2a = 1; break;
216 
			}
217 
		} else if (rotary[rot].stat == 0x02 && rotary[rot].sent == 0) {
218 
			rotary[rot].sent = 1;
219 
			switch (rot) {
220 
				case(0):      reportJoystick.rot1b = 1; break;
221 
				case(1):      reportJoystick.rot2b = 1; break;
222 
			}
223 
		} else {
224 
			rotary[rot].sent = 0;
225 
		}
226 
		rotary[rot].stat = 0;
227 
 
102 pfowler 228 
		// tha fuck is this?
229 
		//if (rbi(PINB, PB4))
230 
		//	rotary[rot].sent = 0;
101 pfowler 231 
	}
232 
}
233 
 
234 
void checkButtons() {
235 
 
236 
	reportJoystick.data1[0] = (-128 + analogRead(0));
237 
	reportJoystick.data1[1] = (-128 + analogRead(1));
238 
	reportJoystick.data2 = 0x0000;				// Clear all the buttons
239 
 
240 
	reportKeyboard.modifier = 0x00;
241 
	reportKeyboard.keycode = 0x00;
242 
 
243 
	uint8_t key = getKey();
244 
	if (rbi(keySelect, 0)) {
245 
		// Keypad is joystick
246 
		if (key > 0)
247 
			reportJoystick.data2 |= (1 << (--key));
248 
		} else {
249 
		// Keypad is keyboard
250 
		if (key > 0) {
251 
			//if (key==10 || key==12) // Left shift, for *, #
252 
			//	reportKeyboard.modifier |= (1<<1);
253 
			reportKeyboard.keycode = keyMap[--key];
254 
		}
255 
	}
256 
 
257 
	// Only one button for now
258 
	if (rbi(PINB, 5) == 0 && buttons[0].detected == 0 && buttons[0].timer == 0) {
259 
		buttons[0].detected = 1;
260 
		buttons[0].timer = 5;
102 pfowler 261 
		buttons[0].waitup = 0;
101 pfowler 262 
	}
263 
 
264 
	if (rbi(PINB, 5) == 1 && buttons[0].waitup == 1) {
265 
		buttons[0].detected = 0;
266 
		buttons[0].timer = 0;
267 
		buttons[0].waitup = 0;
268 
	}
269 
 
270 
	if (buttons[0].detected == 1 && buttons[0].timer == 0 && buttons[0].waitup == 0 ) {
271 
 
272 
		xbi(keySelect, 0);
273 
 
274 
		if (keySelect == 0)
275 
			sbi(PORTD, PD4);
276 
		else
277 
			cbi(PORTD, PD4);
278 
 
279 
		buttons[0].waitup = 1;
280 
	}
281 
}
282 
 
100 pfowler 283 
void updateLcd() {
284 
	usbPoll();
285 
 
286 
 
287 
	char syschar[10];
288 
	ultoa(systime, syschar, 10);
289 
	lcd_overprint_right(syschar, 10, 5, 1);
290 
 
291 
	uint8_t potVal = map_8(analogRead(0), 0, 255, 0, 100);
292 
	if (potVal != oldpotVal) {
293 
		lcd_percent_graph(potVal, 0, 0);
294 
		oldpotVal = potVal;
295 
 
296 
		char pot[3];
297 
		utoa(potVal, pot, 10);
298 
		lcd_overprint_right(pot, 3, 11, 0);
299 
 
300 
		// Set percentage
301 
		lcd_setCursor(15, 0);
302 
		lcd_char(0x25);
303 
	}
304 
}
305 
 
97 pfowler 306 
void millis_tick() {
98 pfowler 307 
 
97 pfowler 308 
}
309 
 
102 pfowler 310 
/*
311 
 *
312 
 * Process the Pin Change Interrupt.
313 
 * pcint provides what bank caused the interrupt
314 
 *
315 
 */
316 
void pcInterrupt(uint8_t pcint) {
317 
 
318 
        switch (pcint) {
319 
                case 0: pcInt[pcint].current = PINB; break;
320 
                case 1: pcInt[pcint].current = PIND; break;
321 
                case 2: pcInt[pcint].current = PINC; break;
322 
        }
323 
        //pcInt[pcint].current = PIND;
324 
        pcInt[pcint].mask = pcInt[pcint].current ^ pcInt[pcint].last;
325 
        pcInt[pcint].last = pcInt[pcint].current;
326 
 
327 
        // Select what rotary we are dealing with
328 
        //   based on the pc interrupt that fired.
329 
        uint8_t rot = 0;
330 
        if (pcint == 1)
331 
                rot = 1;
332 
 
333 
        // If rot stat is not 0, we havn't sent
334 
        //  our last results yet. Skip this click.
335 
        if (rotary[rot].stat != 0) {
336 
                pcInt[pcint].mask = 0;
337 
                return;
338 
        }
339 
        // Check which pin caused the interrupt. If they both
340 
        //  equal 0, the pin that interrupted is the direction
341 
        if (rbi(pcInt[pcint].current, PCINT17) == 0
342 
                && rbi(pcInt[pcint].current, PCINT17) == 0
343 
                && rbi(pcInt[pcint].mask, PCINT16) ) {
344 
                        rotary[rot].stat = 1;
345 
        } else if (rbi(pcInt[pcint].current, PCINT16) == 0
346 
                && rbi(pcInt[pcint].current, PCINT17) == 0
347 
                && rbi(pcInt[pcint].mask, PCINT17) ) {
348 
                        rotary[rot].stat = 2;
349 
        }
350 
 
351 
        // Clear the mask so we know we've delth with it
352 
        pcInt[pcint].mask = 0;
353 
}
354 
 
33 pfowler 355 
ISR(TIMER0_OVF_vect) {
63 pfowler 356 
	tmr0_ovf++;
99 pfowler 357 
	if (tmr0_ovf >= sys_ovf_tick) {
63 pfowler 358 
		systime++;
359 
		tmr0_ovf = 0;
99 pfowler 360 
		//millis_tick();	// Not working, taking too long to call?
361 
 
101 pfowler 362 
		if (buttons[0].timer)
99 pfowler 363 
			buttons[0].timer--;
100 pfowler 364 
 
101 pfowler 365 
		if (lcdTimer)
366 
			lcdTimer--;
367 
 
368 
		if (rotaryTimer)
369 
			rotaryTimer--;
370 
 
63 pfowler 371 
	}
33 pfowler 372 
}
102 pfowler 373 
 
374 
ISR(PCINT0_vect) {
375 
        pcInterrupt(0);
376 
}
377 
 
378 
ISR(PCINT1_vect) {
379 
        pcInterrupt(1);
380 
}
381 
 
382 
ISR(PCINT2_vect) {
383 
        pcInterrupt(2);
384 
}
385 
 
386 
 
98 pfowler 387 
void usbSendHidReport(uchar * data, uchar len) {
388 
	while(1)
389 
	{
390 
		usbPoll();
391 
		if (usbInterruptIsReady())
392 
		{
393 
			usbSetInterrupt(data, len);
394 
			break;
395 
		}
396 
	}
33 pfowler 397 
}
398 
 
98 pfowler 399 
usbMsgLen_t usbFunctionSetup(uchar data[8]) {
400 
	usbRequest_t *rq = (void *)data;
33 pfowler 401 
 
98 pfowler 402 
	if((rq->bmRequestType & USBRQ_TYPE_MASK) == USBRQ_TYPE_CLASS) {
403 
		switch (rq->bRequest) {
404 
			case USBRQ_HID_GET_REPORT:
100 pfowler 405 
				if (rq->wValue.bytes[0] == 1)
406 
					return sizeof(reportKeyboard);
407 
				else if (rq->wValue.bytes[0] == 2)
408 
					return sizeof(reportJoystick);
409 
				else
410 
					return 0;
98 pfowler 411 
			case USBRQ_HID_GET_IDLE:
100 pfowler 412 
				usbMsgPtr = &idleRate;
101 pfowler 413 
				return 1;
98 pfowler 414 
 
415 
 
416 
 
417 
			default:
101 pfowler 418 
				return 0;
98 pfowler 419 
		}
420 
	}
421 
	return 0;
62 pfowler 422 
}
423 
 
98 pfowler 424 
void hadUsbReset(void) {
99 pfowler 425 
}