void fsm_scan_update(void)
{
switch(current_scan_state) {
case KEY_SCAN_INACTIVE:
if (DEVELOPMENT_DEBUG && (systick_hit || wkup_hit)) {
ASSERT_ERROR(0);
}
if (HAS_DELAYED_WAKEUP) {
app_kbd_enable_delayed_scanning(true);
} else {
app_kbd_enable_scanning();
}
current_scan_state = KEY_SCAN_IDLE; // Transition from KEY_SCAN_INACTIVE -> KEY_SCAN_IDLE
break;
case KEY_SCAN_IDLE:
if (DEVELOPMENT_DEBUG && systick_hit) {
ASSERT_ERROR(0);
}
if (wkup_hit) {
// dbg_puts(DBG_SCAN_LVL, "KEY_SCAN_IDLE -> Wakeup! -> KEY_SCANNING\r\n");
scanning_substate = 0;
GLOBAL_INT_DISABLE();
current_scan_state = KEY_SCANNING; // Transition from KEY_SCAN_IDLE -> KEY_SCANNING
app_kbd_start_scanning();
wkup_hit = false;
GLOBAL_INT_RESTORE();
}
break;
case KEY_STATUS_UPD:
if (DEVELOPMENT_DEBUG && wkup_hit) {
ASSERT_ERROR(0);
}
if (systick_hit) {
systick_hit = false;
if (app_kbd_update_status()) {
scanning_substate = 0;
current_scan_state = KEY_SCANNING; // Transition from KEY_STATUS_UPD -> KEY_SCANNING
// scan once to save time!
if (app_kbd_scan_matrix(&scanning_substate)) {
current_scan_state = KEY_STATUS_UPD; // Transition from KEY_SCANNING -> KEY_STATUS_UPD
}
} else {
GLOBAL_INT_DISABLE();
app_kbd_enable_scanning();
current_scan_state = KEY_SCAN_IDLE; // Transition from KEY_STATUS_UPD -> KEY_SCAN_IDLE
GLOBAL_INT_RESTORE();
}
}
break;
case KEY_SCANNING:
if (DEVELOPMENT_DEBUG && wkup_hit) {
ASSERT_ERROR(0);
}
if (systick_hit) {
systick_hit = false;
if (app_kbd_scan_matrix(&scanning_substate)) {
current_scan_state = KEY_STATUS_UPD; // Transition from KEY_SCANNING -> KEY_STATUS_UPD
} // else the state remains unchanged and next time we will scan the next row
}
break;
default:
break;
}
}
/*
* Description : Key scan FSM.
*
* Returns : void
*
*/
void fsm_scan_update(void)
{
switch(current_scan_state)
{
case KEY_SCAN_INACTIVE:
// if (main_fsm_changed)
if (true)
{
// main_fsm_changed = false;
app_kbd_enable_scanning();
current_scan_state = KEY_SCAN_IDLE; // Transition from KEY_SCAN_INACTIVE -> KEY_SCAN_IDLE
}
if (DEVELOPMENT__NO_OTP)
{
if (systick_hit || wkup_hit)
__asm("BKPT #0\n");
}
break;
case KEY_SCAN_IDLE:
// if (main_fsm_changed)
if (false)
{
// main_fsm_changed = false;
app_kbd_disable_scanning();
current_scan_state = KEY_SCAN_INACTIVE; // Transition from KEY_SCAN_IDLE -> KEY_SCAN_INACTIVE
}
else if (wkup_hit)
{
scanning_substate = 0;
app_kbd_start_scanning();
current_scan_state = KEY_SCANNING; // Transition from KEY_SCAN_IDLE -> KEY_SCANNING
}
wkup_hit = false; // just in case...
if (DEVELOPMENT__NO_OTP)
{
if (systick_hit)
__asm("BKPT #0\n");
}
break;
case KEY_STATUS_UPD:
if (DEVELOPMENT__NO_OTP)
{
if (wkup_hit)
__asm("BKPT #0\n");
}
if (systick_hit)
{
if (app_kbd_update_status())
{
scanning_substate = 0;
current_scan_state = KEY_SCANNING; // Transition from KEY_STATUS_UPD -> KEY_SCANNING
// scan once to save time!
if (app_kbd_scan_matrix(&scanning_substate))
current_scan_state = KEY_STATUS_UPD; // Transition from KEY_SCANNING -> KEY_STATUS_UPD
}
else
{
current_scan_state = KEY_SCAN_IDLE; // Transition from KEY_STATUS_UPD -> KEY_SCAN_IDLE
}
systick_hit = false;
}
break;
case KEY_SCANNING:
if (DEVELOPMENT__NO_OTP)
{
if (wkup_hit)
__asm("BKPT #0\n");
}
if (systick_hit)
{
if (app_kbd_scan_matrix(&scanning_substate))
current_scan_state = KEY_STATUS_UPD; // Transition from KEY_SCANNING -> KEY_STATUS_UPD
// else the state remains unchanged and next time we will scan the next row
systick_hit = false;
}
break;
default:
break;
}
}
