19f884877a19a3c1df57ebc7cb6fe88ac158f5b4
[tmk_keyboard.git] / keyboard / pana_m8 / pana_m8.c
1 #include <avr/io.h>
2 #include <avr/pgmspace.h>
3 #include "matrix.h"
4 #include "led.h"
5 #include "wait.h"
6 #include "debug.h"
7
8 #define CLK_HI() (PORTD |= (1<<0))
9 #define CLK_LO() (PORTD &= ~(1<<0))
10 #define STATE() (PIND & (1<<1))
11 #define RST_HI() (PORTD |= (1<<3))
12 #define RST_LO() (PORTD &= ~(1<<3))
13 #define SENSE() (PIND & (1<<2))
14
15 static matrix_row_t matrix[8] = {};
16
17
18 void matrix_init(void)
19 {
20 debug_enable = true;
21 debug_keyboard = true;
22 debug_matrix = true;
23
24 // PD0: Clock. Counter couts up at falling edge.
25 // PD1: Key State. Hi if selected key is activated.
26 // PD2: Sense. Lo if any key is activated while Reset is Hi.
27 // PD3: Reset. Resets counters at riging edge.
28 DDRD |= (1<<3) | (1<<0); // output
29 DDRD &= ~((1<<2) | (1<<1)); // input
30 PORTD &= ~((1<<3) | (1<<0)); // low
31 PORTD |= (1<<2) | (1<<1); // pull-up
32
33 dprintf("init\n");
34 }
35
36 uint8_t matrix_scan(void)
37 {
38 // TODO: debouce & unplug detect
39 // Reset counters
40 RST_HI();
41 wait_us(10);
42 RST_LO();
43 wait_us(10);
44
45 // 8x8 matrix: row:sense, col:drive, key_on:hi
46 for (uint8_t col = 0; col < 8; col++) {
47 for (uint8_t row = 0; row < 8; row++) {
48 CLK_HI();
49 wait_us(10);
50
51 if (STATE()) {
52 matrix[row] |= (1<<col);
53 } else {
54 matrix[row] &= ~(1<<col);
55 }
56
57 // proceed counter - next row
58 CLK_LO();
59 wait_us(10);
60 }
61 }
62 return 1;
63 }
64
65 matrix_row_t matrix_get_row(uint8_t row)
66 {
67 return matrix[row];
68 }
69
70 void led_set(uint8_t usb_led)
71 {
72 }
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