static inline void
shmem_init_private (int npes)
{
if (!check_pe_status ()) {
return;
}
shmemi_comms_init ();
/* just note start_pes() not passed 0, it's not a big deal */
if (npes != 0) {
shmemi_trace (SHMEM_LOG_INFO,
"start_pes() was passed %d, should be 0", npes);
}
report_up ();
/*
* and we're up and running
*/
}
int main(void) {
/* pin map:
*
* PB0 hardware shift (r/l, TODO: split r/l)
* PB1 row data out (to 74HC595)
* PB2 row shift (same)
* PB3 row X8 direct output
* PB4 col in Y9
* PB5 col in Y8
* PB6 XTAL
* PB7 XTAL
*
* PC0 col in Y5
* PC1 col in Y0
* PC2 col in Y1
* PC3 col in Y2
* PC4 col in Y3
* PC5 col in Y4
* PC6 !RESET
*
* PD0 RXD
* PD1 TXD
* PD2 col in Y6
* PD3 col in Y7
* PD4 NC
* PD5 NC
* PD6 NC
* PD7 NC
*
* We're not un-scrambling the rows here, we are just using them directly to index the lookup table.
*
* The device outputs 9N1 (!) data on its uart. The 9th bit indicates key press (1) or release (0), the remaining 8
* bits the USB HID keycode.
*/
DDRB = 0x0f; /* row outputs, shift */
/* uart setup */
DDRD |= 0x02;
UBRR0 = F_CPU/16/(BAUDRATE-1);
UCSR0B = (1<<TXEN0) | (1<<UCSZ02);
UCSR0C = (1<<UCSZ01) | (1<<UCSZ00);
int ridx = 0;
reset_row();
while (23) {
uint16_t cols = read_cols();
uint8_t cidx = ridx;
if (ridx == 30)
cols |= (PINB&1)<<1; /* map hard shift to keycode 0x1f (31) */
while (cidx < ridx+10) {
if (keystate[cidx] > 1) {
keystate[cidx]--;
} else if (keystate[cidx] < 0) {
keystate[cidx]++;
} else {
uint8_t c = keymap[cidx];
if (cols & 1) {
if (!keystate[cidx]) {
keystate[cidx] = DEBOUNCE_TIME;
report_down(c);
}
} else {
if (keystate[cidx]) {
keystate[cidx] = -DEBOUNCE_TIME;
report_up(c);
}
}
}
cidx ++;
cols >>= 1;
}
if (ridx == 80) {
ridx = 0;
reset_row();
} else {
ridx += 10;
next_row();
}
_delay_us(100);
}
}