diff options
Diffstat (limited to 'converter/adb_usb/matrix.c')
| -rw-r--r-- | converter/adb_usb/matrix.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/converter/adb_usb/matrix.c b/converter/adb_usb/matrix.c index a616d10e40..54be2b0f57 100644 --- a/converter/adb_usb/matrix.c +++ b/converter/adb_usb/matrix.c @@ -67,6 +67,13 @@ uint8_t matrix_cols(void) 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++) matrix[i] = 0x00; @@ -85,6 +92,7 @@ uint8_t matrix_scan(void) uint8_t key0, key1; is_modified = false; + _delay_ms(12); // delay for preventing overload of poor ADB keyboard controller codes = adb_host_kbd_recv(); key0 = codes>>8; key1 = codes&0xFF; @@ -100,9 +108,7 @@ uint8_t matrix_scan(void) } else if (codes == 0xFFFF) { // power key release register_key(0xFF); } else if (key0 == 0xFF) { // error - if (debug_matrix) print("adb_host_kbd_recv: ERROR(matrix cleared.)\n"); - // clear matrix to unregister all keys - for (uint8_t i=0; i < MATRIX_ROWS; i++) matrix[i] = 0x00; + xprintf("adb_host_kbd_recv: ERROR(%02X)\n", codes); return key1; } else { register_key(key0); |