70 lines
1.7 KiB
C
70 lines
1.7 KiB
C
#include <arch/delay.h>
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#include <board/kbc.h>
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#include <board/kbscan.h>
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#include <board/keymap.h>
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#include <common/debug.h>
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bool kbscan_enabled = false;
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void kbscan_init(void) {
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KSOCTRL = 0x05;
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KSICTRLR = 0x04;
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// Set all outputs to GPIO mode, low, and inputs
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KSOL = 0;
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KSOH1 = 0;
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KSOLGCTRL = 0xFF;
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KSOLGOEN = 0;
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KSOHGCTRL = 0xFF;
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KSOHGOEN = 0;
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}
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void kbscan_event(void) {
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static uint8_t kbscan_layer = 0;
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static uint8_t kbscan_last[KM_OUT] = { 0 };
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int i;
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for (i = 0; i < KM_OUT; i++) {
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// Set current line as output
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if (i < 8) {
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KSOLGOEN = 1 << i;
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KSOHGOEN = 0;
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} else if (i < 16) {
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KSOLGOEN = 0;
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KSOHGOEN = 1 << (i - 8);
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}
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// TODO: figure out optimal delay
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delay_ticks(10);
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uint8_t new = ~KSI;
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uint8_t last = kbscan_last[i];
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if (new != last) {
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int j;
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for (j = 0; j < 8; j++) {
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bool new_b = new & (1 << j);
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bool last_b = last & (1 << j);
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if (new_b != last_b) {
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uint16_t key = keymap(i, j, kbscan_layer);
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DEBUG("KB %d, %d, %d = 0x%04X, %d\n", i, j, kbscan_layer, key, new_b);
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if (key == K_FN) {
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if (new_b) kbscan_layer = 1;
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else kbscan_layer = 0;
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} else if (kbscan_enabled && key) {
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kbc_scancode(&KBC, key, new_b);
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}
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}
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}
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kbscan_last[i] = new;
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}
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}
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// Reset all lines to inputs
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KSOLGOEN = 0;
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KSOHGOEN = 0;
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// TODO: figure out optimal delay
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delay_ticks(10);
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}
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