usb_init();
while (!usb_configured()) /* wait */ ;
- // Wait an extra second for the PC's operating system to load drivers
- // and do whatever it does to actually be ready for input
- // needs such long time in my PC.
- /* wait for debug print. no need for normal use */
- for (int i =0; i < 6; i++) {
- LED_CONFIG;
- LED_ON;
- _delay_ms(500);
- LED_OFF;
- _delay_ms(500);
- }
-
// Configure timer 0 to generate a timer overflow interrupt every
// 256*1024 clock cycles, or approx 61 Hz when using 16 MHz clock
// This demonstrates how to use interrupts to implement a simple
matrix_init();
+ matrix_scan();
+ // debug on when 4 keys are pressed
+ if (matrix_key_count() == 4) print_enable = true;
+
+ /* wait for debug pipe to print greetings. */
+ if (print_enable) {
+ for (int i =0; i < 6; i++) {
+ LED_CONFIG;
+ LED_ON;
+ _delay_ms(500);
+ LED_OFF;
+ _delay_ms(500);
+ }
+ }
print("\nt.m.k. keyboard 1.2\n");
while (1) {
proc_matrix();