// matrix power saving
#define MATRIX_POWER_SAVE 10000
static uint32_t matrix_last_modified = 0;
-static bool matrix_power = true;
// matrix state buffer(1:on, 0:off)
static matrix_row_t *matrix;
matrix_prev = matrix;
matrix = tmp;
- matrix_power_up();
+ // power on
+ if (!KEY_POWER_STATE()) KEY_POWER_ON();
for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
for (uint8_t col = 0; col < MATRIX_COLS; col++) {
KEY_SELECT(row, col);
}
if (matrix[row] ^ matrix_prev[row]) matrix_last_modified = timer_read32();
}
- matrix_power_down();
+ // power off
+ if (KEY_POWER_STATE() &&
+ (USB_DeviceState == DEVICE_STATE_Suspended ||
+ USB_DeviceState == DEVICE_STATE_Unattached ) &&
+ timer_elapsed32(matrix_last_modified) > MATRIX_POWER_SAVE) {
+ KEY_POWER_OFF();
+ suspend_power_down();
+ }
return 1;
}
}
void matrix_power_up(void) {
- if (matrix_power) return;
KEY_POWER_ON();
- matrix_power = true;
}
void matrix_power_down(void) {
- if (!matrix_power) return;
- // doesn't power save while USB connection is active
- if (USB_DeviceState == DEVICE_STATE_Configured) return;
- if (timer_elapsed32(matrix_last_modified) <= MATRIX_POWER_SAVE) return;
KEY_POWER_OFF();
- suspend_power_down(WDTO_15MS);
- matrix_power = false;
}