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"power off" fix (SX RESET)

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liquidraver
2026-03-19 08:49:30 +01:00
parent 6db225145b
commit ef65aff0e6
1 changed files with 16 additions and 1 deletions
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zephcore/helpers/ui/ui_task.c
+16 -1
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@@ -581,7 +581,22 @@ static void action_deep_sleep(void)
gps_power_off_for_shutdown();
mesh_disable_power_regulators();
/* 5. Configure GPIO SENSE for button wakeup, then enter System OFF.
/* 5. Hold the LoRa radio in hardware reset.
*
* sys_poweroff() bypasses device PM — the SX126x hardware duty cycle
* would otherwise keep cycling autonomously (drawing mA) while the
* SoC is in System OFF (~1µA). Drive RESET low; nRF52 GPIO output
* latches persist across System OFF so the chip stays in reset (0µA).
* On wakeup, the driver's sx126x_init() re-asserts then releases reset. */
#if DT_NODE_EXISTS(DT_ALIAS(lora0)) && DT_NODE_HAS_PROP(DT_ALIAS(lora0), reset_gpios)
{
static const struct gpio_dt_spec lora_reset =
GPIO_DT_SPEC_GET(DT_ALIAS(lora0), reset_gpios);
gpio_pin_configure_dt(&lora_reset, GPIO_OUTPUT_ACTIVE);
}
#endif
/* 6. Configure GPIO SENSE for button wakeup, then enter System OFF.
*
* The nRF GPIO driver does not implement GPIO_INT_WAKEUP, so the
* wakeup-source DTS property has no effect on nRF52. We must set