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LED pattern definition on early boot reset

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LED Double blink while button is held

FAST blink for 3 seconds when config is reset
This commit is contained in:
bennydiamond
2026-03-26 12:31:20 -04:00
parent dba3679e2f
commit 2bfbe5358b
1 changed files with 20 additions and 0 deletions
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rtlplayground.c
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@@ -749,6 +749,7 @@ void early_boot_handle_button(void)
if (gpio_pin_test(machine.reset_pin))
return;
set_sys_led_state(SYS_LED_FAST);
print_string("\n[Reset button held at boot]\n");
if (gpio_pin_test(machine.reset_pin))
@@ -756,7 +757,13 @@ void early_boot_handle_button(void)
const __xdata uint32_t min_hold_ticks = 10UL * SYS_TICK_HZ;
const __xdata uint32_t max_hold_ticks = 30UL * SYS_TICK_HZ;
const __xdata uint32_t blink_ticks = SYS_TICK_HZ / 10; // 100 ms
const __xdata uint32_t pause_ticks = SYS_TICK_HZ / 2; // 500 ms
__xdata uint32_t start_ticks = ticks;
__xdata uint32_t last_blink_step = start_ticks;
__xdata uint8_t blink_step = 0;
set_sys_led_state(SYS_LED_ON);
while (!gpio_pin_test(machine.reset_pin)) {
__xdata uint32_t held_ticks = ticks - start_ticks;
@@ -766,12 +773,25 @@ void early_boot_handle_button(void)
return;
}
// Double blink pattern while button is held:
// ON (100ms), OFF (100ms), ON (100ms), OFF (500ms)
__xdata uint32_t step_ticks = (blink_step == 3) ? pause_ticks : blink_ticks;
if ((ticks - last_blink_step) >= step_ticks) {
blink_step = (blink_step + 1) & 0x3;
set_sys_led_state((blink_step == 0 || blink_step == 2) ? SYS_LED_ON : SYS_LED_OFF);
last_blink_step = ticks;
}
PCON |= 1;
}
set_sys_led_state(SYS_LED_ON);
if ((ticks - start_ticks) >= min_hold_ticks) {
print_string("[Button held 10s-30s at boot; restoring default config]\n");
set_sys_led_state(SYS_LED_FAST);
flash_default_config();
delay(3UL * SYS_TICK_HZ);
}
}