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feat(ulp): added lp-core exception as wake-up source

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This commit is contained in:
Marius Vikhammer
2025-05-15 13:47:22 +08:00
parent ab2829d65f
commit 04fdae2f67
13 changed files with 81 additions and 12 deletions
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2
components/esp_hw_support/include/esp_private/esp_pmu.h
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@@ -114,8 +114,10 @@ typedef enum {
#if SOC_LP_CORE_SUPPORTED
#define RTC_LP_CORE_TRIG_EN PMU_LP_CORE_WAKEUP_EN //!< LP core wakeup
#define RTC_LP_CORE_TRAP_TRIG_EN PMU_LP_CORE_TRAP_WAKEUP_EN //!< LP core trap (exception) wakeup
#else
#define RTC_LP_CORE_TRIG_EN 0
#define RTC_LP_CORE_TRAP_TRIG_EN 0
#endif //SOC_LP_CORE_SUPPORTED
#if SOC_LP_VAD_SUPPORTED

1
components/esp_hw_support/port/esp32c5/private_include/pmu_bit_defs.h
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@@ -20,6 +20,7 @@ extern "C" {
#define PMU_UART1_WAKEUP_EN BIT(7)
#define PMU_BLE_SOC_WAKEUP_EN BIT(10)
#define PMU_LP_CORE_WAKEUP_EN BIT(11)
#define PMU_LP_CORE_TRAP_WAKEUP_EN BIT(12)
#define PMU_USB_WAKEUP_EN BIT(14)
#ifdef __cplusplus

1
components/esp_hw_support/port/esp32c6/private_include/pmu_bit_defs.h
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@@ -21,6 +21,7 @@ extern "C" {
#define PMU_SDIO_WAKEUP_EN BIT(8)
#define PMU_BLE_SOC_WAKEUP_EN BIT(10)
#define PMU_LP_CORE_WAKEUP_EN BIT(11)
#define PMU_LP_CORE_TRAP_WAKEUP_EN BIT(12)
#define PMU_USB_WAKEUP_EN BIT(14)
#ifdef __cplusplus

13
components/esp_hw_support/sleep_modes.c
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@@ -1052,7 +1052,7 @@ static esp_err_t SLEEP_FN_ATTR esp_sleep_start(uint32_t sleep_flags, uint32_t cl
#elif CONFIG_ULP_COPROC_TYPE_RISCV
if (s_config.wakeup_triggers & (RTC_COCPU_TRIG_EN | RTC_COCPU_TRAP_TRIG_EN)) {
#elif CONFIG_ULP_COPROC_TYPE_LP_CORE
if (s_config.wakeup_triggers & RTC_LP_CORE_TRIG_EN) {
if (s_config.wakeup_triggers & (RTC_LP_CORE_TRIG_EN | RTC_LP_CORE_TRAP_TRIG_EN)) {
#endif
#ifdef CONFIG_IDF_TARGET_ESP32
rtc_hal_ulp_wakeup_enable();
@@ -1752,7 +1752,11 @@ esp_err_t esp_sleep_enable_ulp_wakeup(void)
s_config.wakeup_triggers |= (RTC_COCPU_TRIG_EN | RTC_COCPU_TRAP_TRIG_EN);
return ESP_OK;
#elif CONFIG_ULP_COPROC_TYPE_LP_CORE
s_config.wakeup_triggers |= RTC_LP_CORE_TRIG_EN;
#if CONFIG_ULP_TRAP_WAKEUP
s_config.wakeup_triggers |= RTC_LP_CORE_TRIG_EN | RTC_LP_CORE_TRAP_TRIG_EN;
#else
s_config.wakeup_triggers |= RTC_LP_CORE_TRIG_EN;
#endif
return ESP_OK;
#else
return ESP_ERR_NOT_SUPPORTED;
@@ -2339,6 +2343,8 @@ esp_sleep_wakeup_cause_t esp_sleep_get_wakeup_cause(void)
#if SOC_LP_CORE_SUPPORTED
} else if (wakeup_cause & RTC_LP_CORE_TRIG_EN) {
return ESP_SLEEP_WAKEUP_ULP;
} else if (wakeup_cause & RTC_LP_CORE_TRAP_TRIG_EN) {
return ESP_SLEEP_WAKEUP_COCPU_TRAP_TRIG;
#endif
#if SOC_LP_VAD_SUPPORTED
} else if (wakeup_cause & RTC_LP_VAD_TRIG_EN) {
@@ -2427,6 +2433,9 @@ uint32_t esp_sleep_get_wakeup_causes(void)
if (wakeup_cause_raw & RTC_LP_CORE_TRIG_EN) {
wakeup_cause |= BIT(ESP_SLEEP_WAKEUP_ULP);
}
if (wakeup_cause_raw & RTC_LP_CORE_TRAP_TRIG_EN) {
wakeup_cause |= BIT(ESP_SLEEP_WAKEUP_COCPU_TRAP_TRIG);
}
#endif
#if SOC_LP_VAD_SUPPORTED
if (wakeup_cause_raw & RTC_LP_VAD_TRIG_EN) {

8
components/esp_rom/esp32c5/include/esp32c5/rom/rtc.h
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@@ -1,5 +1,5 @@
/*
* SPDX-FileCopyrightText: 2022-2024 Espressif Systems (Shanghai) CO LTD
* SPDX-FileCopyrightText: 2022-2025 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
@@ -126,8 +126,8 @@ typedef enum {
SAR_TRIG = BIT9,
BT_TRIG = BIT10,
RISCV_TRIG = BIT11,
XTAL_DEAD_TRIG = BIT12,
RISCV_TRAP_TRIG = BIT13,
RISCV_TRAP_TRIG = BIT12,
XTAL_DEAD_TRIG = BIT13,
USB_TRIG = BIT14
} WAKEUP_REASON;
@@ -144,8 +144,8 @@ typedef enum {
SAR_TRIG_EN = SAR_TRIG,
BT_TRIG_EN = BT_TRIG,
RISCV_TRIG_EN = RISCV_TRIG,
XTAL_DEAD_TRIG_EN = XTAL_DEAD_TRIG,
RISCV_TRAP_TRIG_EN = RISCV_TRAP_TRIG,
XTAL_DEAD_TRIG_EN = XTAL_DEAD_TRIG,
USB_TRIG_EN = USB_TRIG
} WAKEUP_ENABLE;

6
components/esp_rom/esp32c6/include/esp32c6/rom/rtc.h
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@@ -131,8 +131,8 @@ typedef enum {
SAR_TRIG = BIT9,
BT_TRIG = BIT10,
RISCV_TRIG = BIT11,
XTAL_DEAD_TRIG = BIT12,
RISCV_TRAP_TRIG = BIT13,
RISCV_TRAP_TRIG = BIT12,
XTAL_DEAD_TRIG = BIT13,
USB_TRIG = BIT14
} WAKEUP_REASON;
@@ -150,8 +150,8 @@ typedef enum {
SAR_TRIG_EN = SAR_TRIG,
BT_TRIG_EN = BT_TRIG,
RISCV_TRIG_EN = RISCV_TRIG,
XTAL_DEAD_TRIG_EN = XTAL_DEAD_TRIG,
RISCV_TRAP_TRIG_EN = RISCV_TRAP_TRIG,
XTAL_DEAD_TRIG_EN = XTAL_DEAD_TRIG,
USB_TRIG_EN = USB_TRIG
} WAKEUP_ENABLE;

11
components/ulp/Kconfig
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@@ -92,12 +92,21 @@ menu "Ultra Low Power (ULP) Co-processor"
Note: For LP ROM prints to work properly, make sure that the LP core boots
from the LP ROM.
config ULP_TRAP_WAKEUP
depends on ULP_COPROC_TYPE_LP_CORE
bool
prompt "Enable wakeup of HP-CPU when LP-core encounters an exception"
default "y"
help
Set this option to also trigger a wakeup signal to the HP-CPU when
the LP-core encounters an exception.
menu "ULP Debugging Options"
config ULP_PANIC_OUTPUT_ENABLE
depends on ULP_COPROC_TYPE_LP_CORE && SOC_ULP_LP_UART_SUPPORTED
bool
prompt "Enable panic handler which outputs over LP UART"
default "y" if SOC_LP_CORE_SUPPORT_STORE_LOAD_EXCEPTIONS
default "n"
help
Set this option to enable panic handler functionality. If this option is
enabled then the LP Core will output a panic dump over LP UART,

2
components/ulp/test_apps/lp_core/lp_core_basic_tests/main/CMakeLists.txt
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@@ -100,3 +100,5 @@ endif()
ulp_embed_binary(lp_core_test_app_prefix1 "lp_core/test_main_prefix1.c" "${lp_core_exp_dep_srcs}" PREFIX "ulp1_")
ulp_embed_binary(lp_core_test_app_prefix2 "lp_core/test_main_prefix2.c" "${lp_core_exp_dep_srcs}" PREFIX "ulp2_")
ulp_embed_binary(lp_core_test_app_exception "lp_core/test_main_exception.c" "${lp_core_exp_dep_srcs}")

10
components/ulp/test_apps/lp_core/lp_core_basic_tests/main/lp_core/test_main_exception.c Normal file
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@@ -0,0 +1,10 @@
/*
* SPDX-FileCopyrightText: 2025 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
int main(void)
{
asm volatile("unimp");
}

32
components/ulp/test_apps/lp_core/lp_core_basic_tests/main/test_lp_core.c
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@@ -46,6 +46,9 @@ extern const uint8_t lp_core_main_gpio_bin_end[] asm("_binary_lp_core_test_app
extern const uint8_t lp_core_main_isr_bin_start[] asm("_binary_lp_core_test_app_isr_bin_start");
extern const uint8_t lp_core_main_isr_bin_end[] asm("_binary_lp_core_test_app_isr_bin_end");
extern const uint8_t lp_core_main_exception_bin_start[] asm("_binary_lp_core_test_app_exception_bin_start");
extern const uint8_t lp_core_main_exception_bin_end[] asm("_binary_lp_core_test_app_exception_bin_end");
static void load_and_start_lp_core_firmware(ulp_lp_core_cfg_t* cfg, const uint8_t* firmware_start, const uint8_t* firmware_end)
{
TEST_ASSERT(ulp_lp_core_load_binary(firmware_start,
@@ -383,3 +386,32 @@ TEST_CASE("LP core ISR tests", "[ulp]")
TEST_ASSERT_EQUAL(ISR_TEST_ITERATIONS, ulp_io_isr_counter);
#endif //SOC_RTCIO_PIN_COUNT > 0
}
#if SOC_DEEP_SLEEP_SUPPORTED
void lp_core_prep_exception_wakeup(void)
{
/* Load ULP firmware and start the coprocessor */
ulp_lp_core_cfg_t cfg = {
.wakeup_source = ULP_LP_CORE_WAKEUP_SOURCE_HP_CPU,
};
load_and_start_lp_core_firmware(&cfg, lp_core_main_exception_bin_start, lp_core_main_exception_bin_end);
TEST_ASSERT(esp_sleep_enable_ulp_wakeup() == ESP_OK);
/* Setup test data */
/* Enter Deep Sleep */
esp_deep_sleep_start();
}
static void check_reset_reason_ulp_trap_wakeup(void)
{
printf("Wakeup cause: 0x%"PRIx32"\n", esp_sleep_get_wakeup_causes());
TEST_ASSERT(esp_sleep_get_wakeup_causes() & BIT(ESP_SLEEP_WAKEUP_COCPU_TRAP_TRIG));
}
TEST_CASE_MULTIPLE_STAGES("LP-core exception can wakeup main cpu", "[ulp]",
lp_core_prep_exception_wakeup,
check_reset_reason_ulp_trap_wakeup);
#endif //SOC_DEEP_SLEEP_SUPPORTED

1
components/ulp/test_apps/lp_core/lp_core_basic_tests/sdkconfig.ci.defaults
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@@ -3,4 +3,3 @@ CONFIG_ESP_TASK_WDT_INIT=n
CONFIG_ULP_COPROC_ENABLED=y
CONFIG_ULP_COPROC_TYPE_LP_CORE=y
CONFIG_ULP_COPROC_RESERVE_MEM=12000
CONFIG_ULP_PANIC_OUTPUT_ENABLE=y

1
components/ulp/test_apps/lp_core/lp_core_basic_tests/sdkconfig.defaults
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@@ -3,4 +3,3 @@ CONFIG_ESP_TASK_WDT_INIT=n
CONFIG_ULP_COPROC_ENABLED=y
CONFIG_ULP_COPROC_TYPE_LP_CORE=y
CONFIG_ULP_COPROC_RESERVE_MEM=12000
CONFIG_ULP_PANIC_OUTPUT_ENABLE=y

5
docs/en/migration-guides/release-6.x/6.0/system.rst
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@@ -218,3 +218,8 @@ System Console (STDIO)
``esp_vfs_cdcacm.h`` has been moved to the new component ``esp_usb_cdc_rom_console``, you will now have to add an explicit ``REQUIRES`` for ``esp_usb_cdc_rom_console`` if using any functions from this header.
ULP
---
The LP-Core will now wake-up the main CPU when it encounters an exception during deep sleep. This feature is enabled by default but can be disabled via the :ref:`CONFIG_ULP_TRAP_WAKEUP` Kconfig option is this behavior is not desired.