soc: espressif: esp32c2: Enable deep sleep support (2aca4ef0) · Commits · Wenxi XU / zephyr

soc/espressif/esp32c2/CMakeLists.txt

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		@@ -10,3 +10,6 @@ zephyr_sources(
		zephyr_include_directories(.)

		zephyr_sources_ifndef(CONFIG_BOOTLOADER_MCUBOOT hw_init.c)

		zephyr_library_sources_ifdef(CONFIG_PM power.c)
		zephyr_library_sources_ifdef(CONFIG_POWEROFF poweroff.c)

+2 −0

0 → 100644

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		/*
		* Copyright (c) 2025 Espressif Systems (Shanghai) Co., Ltd.
		*
		* SPDX-License-Identifier: Apache-2.0
		*/

		#include <zephyr/pm/pm.h>
		#include <zephyr/irq.h>
		#include <esp_sleep.h>

		#include <zephyr/logging/log.h>
		LOG_MODULE_DECLARE(soc, CONFIG_SOC_LOG_LEVEL);

		/* Invoke Low Power/System Off specific Tasks */
		void pm_state_set(enum pm_state state, uint8_t substate_id)
		{
		ARG_UNUSED(substate_id);

		switch (state) {
		case PM_STATE_STANDBY:
		/* Nothing to do. */
		break;
		default:
		LOG_DBG("Unsupported power state %u", state);
		break;
		}
		}

		/* Handle SOC specific activity after Low Power Mode Exit */
		void pm_state_exit_post_ops(enum pm_state state, uint8_t substate_id)
		{
		ARG_UNUSED(substate_id);

		switch (state) {
		case PM_STATE_STANDBY:
		irq_unlock(MSTATUS_IEN);
		__asm__ volatile("wfi");
		esp_light_sleep_start();
		break;
		default:
		LOG_DBG("Unsupported power state %u", state);
		break;
		}
		}

0 → 100644

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		/*
		* Copyright (c) 2025 Espressif Systems (Shanghai) Co., Ltd.
		* SPDX-License-Identifier: Apache-2.0
		*/

		#include <zephyr/sys/poweroff.h>

		#include <esp_sleep.h>

		void z_sys_poweroff(void)
		{
		/* Forces RTC domain to be always on */
		esp_sleep_pd_config(ESP_PD_DOMAIN_XTAL, ESP_PD_OPTION_ON);
		esp_deep_sleep_start();
		}