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fix(ulp): record wakeup causes before lp core request sleep

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This commit is contained in:
hebinglin
2026-06-29 16:25:56 +08:00
parent 3a77af68b2
commit a764b5f222
18 changed files with 146 additions and 16 deletions
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components/ulp/lp_core/lp_core.c
+20 -2
View File
@@ -1,5 +1,5 @@
/*
* SPDX-FileCopyrightText: 2023-2025 Espressif Systems (Shanghai) CO LTD
* SPDX-FileCopyrightText: 2023-2026 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
@@ -35,6 +35,11 @@
extern uint32_t _rtc_ulp_memory_start;
#endif //ESP_ROM_HAS_LP_ROM
#if SOC_LP_CORE_HW_AUTO_CLRWAKEUPCAUSE
#include "hal/lp_aon_hal.h"
#include "rom/rtc.h"
#endif
const static char* TAG = "ulp-lp-core";
#define WAKEUP_SOURCE_MAX_NUMBER 6
@@ -175,6 +180,19 @@ esp_err_t ulp_lp_core_load_binary(const uint8_t* program_binary, size_t program_
return ESP_OK;
}
void ulp_lp_core_sleep_start(void)
{
#if SOC_LP_CORE_HW_AUTO_CLRWAKEUPCAUSE
/* LP store register to save wakeup cause for HP core to query.
* Using a hardware register avoids symbol linking issues between
* the independently compiled HP and LP core binaries.
* Save PMU wakeup cause to LP store register for HP core to query */
lp_aon_hal_store_wakeup_cause(pmu_ll_hp_get_wakeup_cause(&PMU));
#endif
lp_core_ll_request_sleep();
}
void ulp_lp_core_stop(void)
{
if (esp_cpu_dbgr_is_attached()) {
@@ -188,7 +206,7 @@ void ulp_lp_core_stop(void)
}
/* Disable wake-up source and put lp core to sleep */
lp_core_ll_set_wakeup_source(0);
lp_core_ll_request_sleep();
ulp_lp_core_sleep_start();
}
void ulp_lp_core_sw_intr_to_lp_trigger(void)
components/ulp/lp_core/lp_core/lp_core_utils.c
+19 -2
View File
@@ -27,6 +27,10 @@
#include "ulp_lp_core_cpu_freq_shared.h"
#include "ulp_lp_core_lp_uart_shared.h"
#include "ulp_lp_core_uart.h"
#if SOC_LP_CORE_HW_AUTO_CLRWAKEUPCAUSE
#include "hal/lp_aon_hal.h"
#include "rom/rtc.h"
#endif
static uint32_t lp_wakeup_cause = 0;
@@ -150,9 +154,22 @@ void ulp_lp_core_delay_cycles(uint32_t cycles)
}
}
void ulp_lp_core_sleep_start_lp_core(void)
{
#if SOC_LP_CORE_HW_AUTO_CLRWAKEUPCAUSE
/* LP store register to save wakeup cause for HP core to query.
* Using a hardware register avoids symbol linking issues between
* the independently compiled HP and LP core binaries.
* Save PMU wakeup cause to LP store register for HP core to query */
lp_aon_hal_store_wakeup_cause(pmu_ll_hp_get_wakeup_cause(&PMU));
#endif
lp_core_ll_request_sleep();
}
void ulp_lp_core_halt(void)
{
lp_core_ll_request_sleep();
ulp_lp_core_sleep_start_lp_core();
while (1);
}
@@ -161,7 +178,7 @@ void ulp_lp_core_stop_lp_core(void)
{
/* Disable wake-up source and put lp core to sleep */
lp_core_ll_set_wakeup_source(0);
lp_core_ll_request_sleep();
ulp_lp_core_sleep_start_lp_core();
}
void __attribute__((noreturn)) abort(void)