#include "print.h"
#include "util.h"
#include "debug.h"
-#include "host.h"
-#include "led.h"
#include "adb.h"
#include "matrix.h"
# error "MATRIX_ROWS must not exceed 255"
#endif
-#define CAPS 0x39
-#define CAPS_UP (CAPS | 0x80)
-#define ROW(key) ((key)>>3&0x0F)
-#define COL(key) ((key)&0x07)
-
-static bool _matrix_is_modified = false;
+static bool is_modified = false;
// matrix state buffer(1:on, 0:off)
#if (MATRIX_COLS <= 8)
-static uint8_t *matrix;
-static uint8_t _matrix0[MATRIX_ROWS];
+static uint8_t matrix[MATRIX_ROWS];
#else
-static uint16_t *matrix;
-static uint16_t _matrix0[MATRIX_ROWS];
+static uint16_t matrix[MATRIX_ROWS];
#endif
#ifdef MATRIX_HAS_GHOST
static bool matrix_has_ghost_in_row(uint8_t row);
#endif
-static void _register_key(uint8_t key);
+static void register_key(uint8_t key);
inline
void matrix_init(void)
{
adb_host_init();
+ // wait for keyboard to boot up and receive command
+ _delay_ms(1000);
+ // Enable keyboard left/right modifier distinction
+ // Addr:Keyboard(0010), Cmd:Listen(10), Register3(11)
+ // upper byte: reserved bits 0000, device address 0010
+ // lower byte: device handler 00000011
+ adb_host_listen(0x2B,0x02,0x03);
// initialize matrix state: all keys off
- for (uint8_t i=0; i < MATRIX_ROWS; i++) _matrix0[i] = 0x00;
- matrix = _matrix0;
+ for (uint8_t i=0; i < MATRIX_ROWS; i++) matrix[i] = 0x00;
- print_enable = true;
debug_enable = true;
- debug_matrix = true;
- debug_keyboard = true;
- debug_mouse = true;
+ //debug_matrix = true;
+ //debug_keyboard = true;
+ //debug_mouse = true;
print("debug enabled.\n");
return;
}
uint8_t matrix_scan(void)
{
+ /* extra_key is volatile and more convoluted than necessary because gcc refused
+ to generate valid code otherwise. Making extra_key uint8_t and constructing codes
+ here via codes = extra_key<<8 | 0xFF; would consistently fail to even LOAD
+ extra_key from memory, and leave garbage in the high byte of codes. I tried
+ dozens of code variations and it kept generating broken assembly output. So
+ beware if attempting to make extra_key code more logical and efficient. */
+ static volatile uint16_t extra_key = 0xFFFF;
uint16_t codes;
uint8_t key0, key1;
- _matrix_is_modified = false;
- codes = adb_host_kbd_recv();
+ is_modified = false;
+
+ codes = extra_key;
+ extra_key = 0xFFFF;
+
+ if ( codes == 0xFFFF )
+ {
+ _delay_ms(12); // delay for preventing overload of poor ADB keyboard controller
+ codes = adb_host_kbd_recv();
+ }
key0 = codes>>8;
key1 = codes&0xFF;
-#ifdef MATRIX_HAS_LOCKING_CAPS
- // Send Caps key up event
- if (matrix_is_on(ROW(CAPS), COL(CAPS))) {
- _matrix_is_modified = true;
- _register_key(CAPS_UP);
+ if (debug_matrix && codes) {
+ print("adb_host_kbd_recv: "); phex16(codes); print("\n");
}
-#endif
+
if (codes == 0) { // no keys
return 0;
- } else if (key0 == 0xFF && key1 != 0xFF) { // error
- return codes&0xFF;
+ } else if (codes == 0x7F7F) { // power key press
+ register_key(0x7F);
+ } else if (codes == 0xFFFF) { // power key release
+ register_key(0xFF);
+ } else if (key0 == 0xFF) { // error
+ xprintf("adb_host_kbd_recv: ERROR(%d)\n", codes);
+ return key1;
} else {
-#ifdef MATRIX_HAS_LOCKING_CAPS
- if (host_keyboard_leds() & (1<<USB_LED_CAPS_LOCK)) {
- // Ignore LockingCaps key down event when CAPS LOCK is on
- if (key0 == CAPS && (key1 == CAPS || key1 == 0xFF)) return 0;
- if (key0 == CAPS) key0 = key1;
- if (key1 == CAPS) key1 = 0xFF;
- // Convert LockingCaps key up event into down event
- if (key0 == CAPS_UP) key0 = CAPS;
- if (key1 == CAPS_UP) key1 = CAPS;
- } else {
- // CAPS LOCK off:
- // Ignore LockingCaps key up event when CAPS LOCK is off
- if (key0 == CAPS_UP && (key1 == CAPS_UP || key1 == 0xFF)) return 0;
- if (key0 == CAPS_UP) key0 = key1;
- if (key1 == CAPS_UP) key1 = 0xFF;
- }
-#endif
- _matrix_is_modified = true;
- _register_key(key0);
+ register_key(key0);
if (key1 != 0xFF) // key1 is 0xFF when no second key.
- _register_key(key1);
+ extra_key = key1<<8 | 0xFF; // process in a separate call
}
- if (debug_enable) {
- print("adb_host_kbd_recv: "); phex16(codes); print("\n");
- }
return 1;
}
bool matrix_is_modified(void)
{
- return _matrix_is_modified;
+ return is_modified;
}
inline
void matrix_print(void)
{
+ if (!debug_matrix) return;
#if (MATRIX_COLS <= 8)
- print("\nr/c 01234567\n");
+ print("r/c 01234567\n");
#else
- print("\nr/c 0123456789ABCDEF\n");
+ print("r/c 0123456789ABCDEF\n");
#endif
for (uint8_t row = 0; row < matrix_rows(); row++) {
phex(row); print(": ");
#endif
inline
-static void _register_key(uint8_t key)
+static void register_key(uint8_t key)
{
uint8_t col, row;
col = key&0x07;
} else {
matrix[row] |= (1<<col);
}
+ is_modified = true;
}