ESP-IDF
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Outline
#include <stddef.h>
#include <string.h>
#include <sys/lock.h>
#include <sys/param.h>
#include "esp_attr.h"
#include "esp_sleep.h"
#include "esp_cpu.h"
#include "soc/soc.h"
#include "soc/rtc.h"
#include "soc/soc_caps.h"
#include "hal/uart_ll.h"
#include "hal/clk_tree_ll.h"
#include "hal/lp_timer_ll.h"
#include "hal/lp_timer_hal.h"
#include "hal/rtc_cntl_ll.h"
#include "hal/pmu_ll.h"
#include "sdkconfig.h"
#include "esp_rom_uart.h"
#include "esp_rom_sys.h"
#include "esp32/rom/rtc.h"
#include "esp32s2/rom/rtc.h"
#include "esp32s3/rom/rtc.h"
#include "esp32c3/rom/rtc.h"
#include "esp32c6/rom/rtc.h"
#include "esp32h2/rom/rtc.h"
esp_wake_stub_sleep(esp_deep_sleep_wake_stub_fn_t)
esp_wake_stub_uart_tx_wait_idle(uint8_t)
esp_wake_stub_set_wakeup_time(uint64_t)
esp_wake_stub_get_wakeup_cause()
Files
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SourceVuESP-IDF Framework and ExamplesESP-IDFcomponents/esp_hw_support/sleep_wake_stub.c
 
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/* * SPDX-FileCopyrightText: 2023-2024 Espressif Systems (Shanghai) CO LTD * * SPDX-License-Identifier: Apache-2.0 *//* ... */ #include <stddef.h> #include <string.h> #include <sys/lock.h> #include <sys/param.h> #include "esp_attr.h" #include "esp_sleep.h" #include "esp_cpu.h" #include "soc/soc.h" #include "soc/rtc.h" #include "soc/soc_caps.h" #include "hal/uart_ll.h" #include "hal/clk_tree_ll.h"12 includes #if SOC_LP_TIMER_SUPPORTED #include "hal/lp_timer_ll.h" #include "hal/lp_timer_hal.h"/* ... */ #else #include "hal/rtc_cntl_ll.h" #endif #if SOC_PMU_SUPPORTED #include "hal/pmu_ll.h" #endif #include "sdkconfig.h" #include "esp_rom_uart.h" #include "esp_rom_sys.h" #ifdef CONFIG_IDF_TARGET_ESP32 #include "esp32/rom/rtc.h" #elif CONFIG_IDF_TARGET_ESP32S2 #include "esp32s2/rom/rtc.h" #elif CONFIG_IDF_TARGET_ESP32S3 #include "esp32s3/rom/rtc.h" #elif CONFIG_IDF_TARGET_ESP32C3 #include "esp32c3/rom/rtc.h" #elif CONFIG_IDF_TARGET_ESP32C6 #include "esp32c6/rom/rtc.h" #elif CONFIG_IDF_TARGET_ESP32H2 #include "esp32h2/rom/rtc.h" #endif void RTC_IRAM_ATTR esp_wake_stub_sleep(esp_deep_sleep_wake_stub_fn_t new_stub) { #if CONFIG_IDF_TARGET_ESP32 // Since the app core of esp32 does not support access to RTC_FAST_MEMORY, // `esp_set_deep_sleep_wake_stub` is not declared in RTC_FAST_MEMORY, // so we cannot call it here REG_WRITE(RTC_ENTRY_ADDR_REG, (uint32_t)new_stub);/* ... */ #else esp_set_deep_sleep_wake_stub(new_stub); #endif #if SOC_PM_SUPPORT_DEEPSLEEP_CHECK_STUB_ONLY esp_set_deep_sleep_wake_stub_default_entry(); #else set_rtc_memory_crc(); #endif // SOC_PM_SUPPORT_DEEPSLEEP_CHECK_STUB_MEM // Go to sleep. #if SOC_PMU_SUPPORTED pmu_ll_hp_clear_wakeup_intr_status(&PMU); pmu_ll_hp_clear_reject_intr_status(&PMU); pmu_ll_hp_clear_reject_cause(&PMU); pmu_ll_hp_set_sleep_enable(&PMU);/* ... */ #else rtc_cntl_ll_sleep_enable(); #endif // A few CPU cycles may be necessary for the sleep to start... #if __XTENSA__ xt_utils_wait_for_intr(); #else rv_utils_wait_for_intr(); #endif // __XTENSA__ // never reaches here. }{ ... } void RTC_IRAM_ATTR esp_wake_stub_uart_tx_wait_idle(uint8_t uart_no) { while (!uart_ll_is_tx_idle(UART_LL_GET_HW(uart_no))) {}; }{ ... } void RTC_IRAM_ATTR esp_wake_stub_set_wakeup_time(uint64_t time_in_us) { uint64_t rtc_count_delta = time_in_us * (1 << RTC_CLK_CAL_FRACT) / clk_ll_rtc_slow_load_cal(); #if SOC_LP_TIMER_SUPPORTED lp_timer_ll_counter_snapshot(&LP_TIMER); uint32_t lo = lp_timer_ll_get_counter_value_low(&LP_TIMER, 0); uint32_t hi = lp_timer_ll_get_counter_value_high(&LP_TIMER, 0); uint64_t rtc_curr_count = (uint64_t)hi << 32 | lo; lp_timer_ll_clear_alarm_intr_status(&LP_TIMER); lp_timer_ll_set_alarm_target(&LP_TIMER, 0, rtc_curr_count + rtc_count_delta); lp_timer_ll_set_target_enable(&LP_TIMER, 0, true);/* ... */ #else uint64_t rtc_curr_count = rtc_cntl_ll_get_rtc_time(); rtc_cntl_ll_set_wakeup_timer(rtc_curr_count + rtc_count_delta);/* ... */ #endif }{ ... } uint32_t RTC_IRAM_ATTR esp_wake_stub_get_wakeup_cause(void) { #if SOC_PMU_SUPPORTED return pmu_ll_hp_get_wakeup_cause(&PMU); #else return rtc_cntl_ll_get_wakeup_cause(); #endif }{ ... }
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