]>
Commit | Line | Data |
---|---|---|
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 PD1:State PD2:Sense_All PD3:Reset(Scan_All) | |
25 | DDRD = (1<<3) | (1<<0); | |
26 | PORTD = (1<<2) | (1<<1); | |
27 | ||
28 | dprintf("init\n"); | |
29 | } | |
30 | ||
31 | uint8_t matrix_scan(void) | |
32 | { | |
33 | ||
34 | // Scan_all resets counter | |
35 | RST_HI(); | |
36 | wait_us(10); | |
37 | // TODO: cannot get reliable value from SENSE() | |
38 | //uint8_t s = SENSE() | STATE(); | |
39 | //if (!SENSE()) return 0; // no activated key | |
40 | RST_LO(); | |
41 | wait_us(10); | |
42 | //if (!s) return 0; | |
43 | ||
44 | // 8x8 matrix: row:sense, col:drive, key_on:hi | |
45 | for (uint8_t col = 0; col < 8; col++) { | |
46 | for (uint8_t row = 0; row < 8; row++) { | |
47 | CLK_HI(); | |
48 | wait_us(10); | |
49 | ||
50 | if (STATE()) { | |
51 | matrix[row] |= (1<<col); | |
52 | } else { | |
53 | matrix[row] &= ~(1<<col); | |
54 | } | |
55 | ||
56 | // clock lo - next row | |
57 | CLK_LO(); | |
58 | wait_us(10); | |
59 | } | |
60 | } | |
61 | return 1; | |
62 | } | |
63 | ||
64 | matrix_row_t matrix_get_row(uint8_t row) | |
65 | { | |
66 | return matrix[row]; | |
67 | } | |
68 | ||
69 | void led_set(uint8_t usb_led) | |
70 | { | |
71 | } |