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esp32, esp32s2: move sleep modes code to esp_system

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This commit is contained in:
Renz Bagaporo 2020-04-23 12:39:07 +08:00
parent 14902da344
commit b30522f701
9 changed files with 187 additions and 1121 deletions
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4
components/esp32/CMakeLists.txt
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@ -22,7 +22,6 @@ else()
"intr_alloc.c"
"pm_esp32.c"
"pm_trace.c"
"sleep_modes.c"
"spiram.c"
"spiram_psram.c"
"system_api_esp32.c")
@ -31,10 +30,9 @@ else()
set(requires driver efuse soc) #unfortunately rom/uart uses SOC registers directly
# driver is a public requirement because esp_sleep.h uses gpio_num_t & touch_pad_t
# app_update is added here because cpu_start.c uses esp_ota_get_app_description() function.
# esp_timer is added here because cpu_start.c uses esp_timer
set(priv_requires app_trace app_update bootloader_support log mbedtls nvs_flash pthread
set(priv_requires app_trace app_update bootloader_support esp_system log mbedtls nvs_flash pthread
spi_flash vfs espcoredump esp_common perfmon esp_timer esp_ipc)
set(fragments linker.lf ld/esp32_fragments.lf)

4
components/esp32s2/CMakeLists.txt
View File

@ -21,7 +21,6 @@ else()
"intr_alloc.c"
"pm_esp32s2.c"
"pm_trace.c"
"sleep_modes.c"
"spiram.c"
"spiram_psram.c"
"system_api_esp32s2.c"
@ -33,11 +32,10 @@ else()
set(requires driver efuse)
# driver is a public requirement because esp_sleep.h uses gpio_num_t & touch_pad_t
# app_update is added here because cpu_start.c uses esp_ota_get_app_description() function.
# esp_timer is added here because cpu_start.c uses esp_timer
set(priv_requires
app_trace app_update bootloader_support log mbedtls nvs_flash
app_trace app_update bootloader_support esp_system log mbedtls nvs_flash
pthread spi_flash vfs espcoredump esp_common esp_timer)
set(fragments linker.lf ld/esp32s2_fragments.lf)

359
components/esp32s2/include/esp_sleep.h
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@ -1,359 +0,0 @@
// Copyright 2015-2017 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#pragma once
#include <stdint.h>
#include "esp_err.h"
#include "driver/gpio.h"
#include "driver/touch_pad.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief Logic function used for EXT1 wakeup mode.
*/
typedef enum {
ESP_EXT1_WAKEUP_ALL_LOW = 0, //!< Wake the chip when all selected GPIOs go low
ESP_EXT1_WAKEUP_ANY_HIGH = 1 //!< Wake the chip when any of the selected GPIOs go high
} esp_sleep_ext1_wakeup_mode_t;
/**
* @brief Power domains which can be powered down in sleep mode
*/
typedef enum {
ESP_PD_DOMAIN_RTC_PERIPH, //!< RTC IO, sensors and ULP co-processor
ESP_PD_DOMAIN_RTC_SLOW_MEM, //!< RTC slow memory
ESP_PD_DOMAIN_RTC_FAST_MEM, //!< RTC fast memory
ESP_PD_DOMAIN_XTAL, //!< XTAL oscillator
ESP_PD_DOMAIN_MAX //!< Number of domains
} esp_sleep_pd_domain_t;
/**
* @brief Power down options
*/
typedef enum {
ESP_PD_OPTION_OFF, //!< Power down the power domain in sleep mode
ESP_PD_OPTION_ON, //!< Keep power domain enabled during sleep mode
ESP_PD_OPTION_AUTO //!< Keep power domain enabled in sleep mode, if it is needed by one of the wakeup options. Otherwise power it down.
} esp_sleep_pd_option_t;
/**
* @brief Sleep wakeup cause
*/
typedef enum {
ESP_SLEEP_WAKEUP_UNDEFINED, //!< In case of deep sleep, reset was not caused by exit from deep sleep
ESP_SLEEP_WAKEUP_ALL, //!< Not a wakeup cause, used to disable all wakeup sources with esp_sleep_disable_wakeup_source
ESP_SLEEP_WAKEUP_EXT0, //!< Wakeup caused by external signal using RTC_IO
ESP_SLEEP_WAKEUP_EXT1, //!< Wakeup caused by external signal using RTC_CNTL
ESP_SLEEP_WAKEUP_TIMER, //!< Wakeup caused by timer
ESP_SLEEP_WAKEUP_TOUCHPAD, //!< Wakeup caused by touchpad
ESP_SLEEP_WAKEUP_ULP, //!< Wakeup caused by ULP program
ESP_SLEEP_WAKEUP_GPIO, //!< Wakeup caused by GPIO (light sleep only)
ESP_SLEEP_WAKEUP_UART, //!< Wakeup caused by UART (light sleep only)
ESP_SLEEP_WAKEUP_WIFI, //!< Wakeup caused by WIFI (light sleep only)
ESP_SLEEP_WAKEUP_COCPU, //!< Wakeup caused by COCPU int
ESP_SLEEP_WAKEUP_COCPU_TRAP_TRIG, //!< Wakeup caused by COCPU crash
} esp_sleep_source_t;
/* Leave this type define for compatibility */
typedef esp_sleep_source_t esp_sleep_wakeup_cause_t;
/**
* @brief Disable wakeup source
*
* This function is used to deactivate wake up trigger for source
* defined as parameter of the function.
*
* @note This function does not modify wake up configuration in RTC.
* It will be performed in esp_sleep_start function.
*
* See docs/sleep-modes.rst for details.
*
* @param source - number of source to disable of type esp_sleep_source_t
* @return
* - ESP_OK on success
* - ESP_ERR_INVALID_STATE if trigger was not active
*/
esp_err_t esp_sleep_disable_wakeup_source(esp_sleep_source_t source);
/**
* @brief Enable wakeup by ULP coprocessor
*
* @return
* - ESP_OK on success
*/
esp_err_t esp_sleep_enable_ulp_wakeup(void);
/**
* @brief Enable wakeup by timer
* @param time_in_us time before wakeup, in microseconds
* @return
* - ESP_OK on success
* - ESP_ERR_INVALID_ARG if value is out of range (TBD)
*/
esp_err_t esp_sleep_enable_timer_wakeup(uint64_t time_in_us);
/**
* @brief Enable wakeup by touch sensor
*
* @note In revisions 0 and 1 of the ESP32, touch wakeup source
* can not be used when RTC_PERIPH power domain is forced
* to be powered on (ESP_PD_OPTION_ON) or when ext0 wakeup
* source is used.
*
* @note The FSM mode of the touch button should be configured
* as the timer trigger mode.
*
* @return
* - ESP_OK on success
* - ESP_ERR_NOT_SUPPORTED if additional current by touch (CONFIG_ESP32_RTC_EXT_CRYST_ADDIT_CURRENT) is enabled.
* - ESP_ERR_INVALID_STATE if wakeup triggers conflict
*/
esp_err_t esp_sleep_enable_touchpad_wakeup(void);
/**
* @brief Get the touch pad which caused wakeup
*
* If wakeup was caused by another source, this function will return TOUCH_PAD_MAX;
*
* @return touch pad which caused wakeup
*/
touch_pad_t esp_sleep_get_touchpad_wakeup_status(void);
/**
* @brief Enable wakeup using a pin
*
* This function uses external wakeup feature of RTC_IO peripheral.
* It will work only if RTC peripherals are kept on during sleep.
*
* This feature can monitor any pin which is an RTC IO. Once the pin transitions
* into the state given by level argument, the chip will be woken up.
*
* @note This function does not modify pin configuration. The pin is
* configured in esp_sleep_start, immediately before entering sleep mode.
*
* @note In revisions 0 and 1 of the ESP32, ext0 wakeup source
* can not be used together with touch or ULP wakeup sources.
*
* @param gpio_num GPIO number used as wakeup source. Only GPIOs which are have RTC
* functionality can be used: 0,2,4,12-15,25-27,32-39.
* @param level input level which will trigger wakeup (0=low, 1=high)
* @return
* - ESP_OK on success
* - ESP_ERR_INVALID_ARG if the selected GPIO is not an RTC GPIO,
* or the mode is invalid
* - ESP_ERR_INVALID_STATE if wakeup triggers conflict
*/
esp_err_t esp_sleep_enable_ext0_wakeup(gpio_num_t gpio_num, int level);
/**
* @brief Enable wakeup using multiple pins
*
* This function uses external wakeup feature of RTC controller.
* It will work even if RTC peripherals are shut down during sleep.
*
* This feature can monitor any number of pins which are in RTC IOs.
* Once any of the selected pins goes into the state given by mode argument,
* the chip will be woken up.
*
* @note This function does not modify pin configuration. The pins are
* configured in esp_sleep_start, immediately before
* entering sleep mode.
*
* @note internal pullups and pulldowns don't work when RTC peripherals are
* shut down. In this case, external resistors need to be added.
* Alternatively, RTC peripherals (and pullups/pulldowns) may be
* kept enabled using esp_sleep_pd_config function.
*
* @param mask bit mask of GPIO numbers which will cause wakeup. Only GPIOs
* which are have RTC functionality can be used in this bit map:
* 0,2,4,12-15,25-27,32-39.
* @param mode select logic function used to determine wakeup condition:
* - ESP_EXT1_WAKEUP_ALL_LOW: wake up when all selected GPIOs are low
* - ESP_EXT1_WAKEUP_ANY_HIGH: wake up when any of the selected GPIOs is high
* @return
* - ESP_OK on success
* - ESP_ERR_INVALID_ARG if any of the selected GPIOs is not an RTC GPIO,
* or mode is invalid
*/
esp_err_t esp_sleep_enable_ext1_wakeup(uint64_t mask, esp_sleep_ext1_wakeup_mode_t mode);
/**
* @brief Enable wakeup from light sleep using GPIOs
*
* Each GPIO supports wakeup function, which can be triggered on either low level
* or high level. Unlike EXT0 and EXT1 wakeup sources, this method can be used
* both for all IOs: RTC IOs and digital IOs. It can only be used to wakeup from
* light sleep though.
*
* To enable wakeup, first call gpio_wakeup_enable, specifying gpio number and
* wakeup level, for each GPIO which is used for wakeup.
* Then call this function to enable wakeup feature.
*
* @note In revisions 0 and 1 of the ESP32, GPIO wakeup source
* can not be used together with touch or ULP wakeup sources.
*
* @return
* - ESP_OK on success
* - ESP_ERR_INVALID_STATE if wakeup triggers conflict
*/
esp_err_t esp_sleep_enable_gpio_wakeup(void);
/**
* @brief Enable wakeup from light sleep using UART
*
* Use uart_set_wakeup_threshold function to configure UART wakeup threshold.
*
* Wakeup from light sleep takes some time, so not every character sent
* to the UART can be received by the application.
*
* @param uart_num UART port to wake up from
* @return
* - ESP_OK on success
* - ESP_ERR_INVALID_ARG if wakeup from given UART is not supported
*/
esp_err_t esp_sleep_enable_uart_wakeup(int uart_num);
/**
* @brief Get the bit mask of GPIOs which caused wakeup (ext1)
*
* If wakeup was caused by another source, this function will return 0.
*
* @return bit mask, if GPIOn caused wakeup, BIT(n) will be set
*/
uint64_t esp_sleep_get_ext1_wakeup_status(void);
/**
* @brief Enable wakeup by WiFi MAC
* @return
* - ESP_OK on success
*/
esp_err_t esp_sleep_enable_wifi_wakeup(void);
/**
* @brief Set power down mode for an RTC power domain in sleep mode
*
* If not set set using this API, all power domains default to ESP_PD_OPTION_AUTO.
*
* @param domain power domain to configure
* @param option power down option (ESP_PD_OPTION_OFF, ESP_PD_OPTION_ON, or ESP_PD_OPTION_AUTO)
* @return
* - ESP_OK on success
* - ESP_ERR_INVALID_ARG if either of the arguments is out of range
*/
esp_err_t esp_sleep_pd_config(esp_sleep_pd_domain_t domain,
esp_sleep_pd_option_t option);
/**
* @brief Enter deep sleep with the configured wakeup options
*
* This function does not return.
*/
void esp_deep_sleep_start(void) __attribute__((noreturn));
/**
* @brief Enter light sleep with the configured wakeup options
*
* @return
* - ESP_OK on success (returned after wakeup)
* - ESP_ERR_INVALID_STATE if WiFi or BT is not stopped
*/
esp_err_t esp_light_sleep_start(void);
/**
* @brief Enter deep-sleep mode
*
* The device will automatically wake up after the deep-sleep time
* Upon waking up, the device calls deep sleep wake stub, and then proceeds
* to load application.
*
* Call to this function is equivalent to a call to esp_deep_sleep_enable_timer_wakeup
* followed by a call to esp_deep_sleep_start.
*
* esp_deep_sleep does not shut down WiFi, BT, and higher level protocol
* connections gracefully.
* Make sure relevant WiFi and BT stack functions are called to close any
* connections and deinitialize the peripherals. These include:
* - esp_bluedroid_disable
* - esp_bt_controller_disable
* - esp_wifi_stop
*
* This function does not return.
*
* @param time_in_us deep-sleep time, unit: microsecond
*/
void esp_deep_sleep(uint64_t time_in_us) __attribute__((noreturn));
/**
* @brief Get the wakeup source which caused wakeup from sleep
*
* @return cause of wake up from last sleep (deep sleep or light sleep)
*/
esp_sleep_wakeup_cause_t esp_sleep_get_wakeup_cause(void);
/**
* @brief Default stub to run on wake from deep sleep.
*
* Allows for executing code immediately on wake from sleep, before
* the software bootloader or ESP-IDF app has started up.
*
* This function is weak-linked, so you can implement your own version
* to run code immediately when the chip wakes from
* sleep.
*
* See docs/deep-sleep-stub.rst for details.
*/
void esp_wake_deep_sleep(void);
/**
* @brief Function type for stub to run on wake from sleep.
*
*/
typedef void (*esp_deep_sleep_wake_stub_fn_t)(void);
/**
* @brief Install a new stub at runtime to run on wake from deep sleep
*
* If implementing esp_wake_deep_sleep() then it is not necessary to
* call this function.
*
* However, it is possible to call this function to substitute a
* different deep sleep stub. Any function used as a deep sleep stub
* must be marked RTC_IRAM_ATTR, and must obey the same rules given
* for esp_wake_deep_sleep().
*/
void esp_set_deep_sleep_wake_stub(esp_deep_sleep_wake_stub_fn_t new_stub);
/**
* @brief Get current wake from deep sleep stub
* @return Return current wake from deep sleep stub, or NULL if
* no stub is installed.
*/
esp_deep_sleep_wake_stub_fn_t esp_get_deep_sleep_wake_stub(void);
/**
* @brief The default esp-idf-provided esp_wake_deep_sleep() stub.
*
* See docs/deep-sleep-stub.rst for details.
*/
void esp_default_wake_deep_sleep(void);
#ifdef __cplusplus
}
#endif

720
components/esp32s2/sleep_modes.c
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@ -1,720 +0,0 @@
// Copyright 2015-2017 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include <stddef.h>
#include <sys/lock.h>
#include <sys/param.h>
#include "esp_attr.h"
#include "esp_sleep.h"
#include "esp_private/esp_timer_private.h"
#include "esp_log.h"
#include "esp32s2/clk.h"
#include "esp_newlib.h"
#include "esp_spi_flash.h"
#include "esp32s2/rom/cache.h"
#include "esp32s2/rom/rtc.h"
#include "esp_rom_uart.h"
#include "esp_rom_sys.h"
#include "soc/cpu.h"
#include "soc/rtc.h"
#include "soc/spi_periph.h"
#include "soc/dport_reg.h"
#include "soc/extmem_reg.h"
#include "soc/soc_memory_layout.h"
#include "soc/uart_caps.h"
#include "hal/wdt_hal.h"
#include "hal/clk_gate_ll.h"
#include "driver/rtc_io.h"
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "sdkconfig.h"
// If light sleep time is less than that, don't power down flash
#define FLASH_PD_MIN_SLEEP_TIME_US 2000
// Time from VDD_SDIO power up to first flash read in ROM code
#define VDD_SDIO_POWERUP_TO_FLASH_READ_US 700
// Extra time it takes to enter and exit light sleep and deep sleep
// For deep sleep, this is until the wake stub runs (not the app).
#ifdef CONFIG_ESP32S2_RTC_CLK_SRC_EXT_CRYS
#define LIGHT_SLEEP_TIME_OVERHEAD_US (650 + 30 * 240 / CONFIG_ESP32S2_DEFAULT_CPU_FREQ_MHZ)
#define DEEP_SLEEP_TIME_OVERHEAD_US (650 + 100 * 240 / CONFIG_ESP32S2_DEFAULT_CPU_FREQ_MHZ)
#else
#define LIGHT_SLEEP_TIME_OVERHEAD_US (250 + 30 * 240 / CONFIG_ESP32S2_DEFAULT_CPU_FREQ_MHZ)
#define DEEP_SLEEP_TIME_OVERHEAD_US (250 + 100 * 240 / CONFIG_ESP32S2_DEFAULT_CPU_FREQ_MHZ)
#endif // CONFIG_ESP32S2_RTC_CLK_SRC_EXT_CRYS
// Minimal amount of time we can sleep for
#define LIGHT_SLEEP_MIN_TIME_US 200
#define CHECK_SOURCE(source, value, mask) ((s_config.wakeup_triggers & mask) && \
(source == value))
/**
* Internal structure which holds all requested deep sleep parameters
*/
typedef struct {
esp_sleep_pd_option_t pd_options[ESP_PD_DOMAIN_MAX];
uint64_t sleep_duration;
uint32_t wakeup_triggers : 15;
uint32_t ext1_trigger_mode : 1;
uint32_t ext1_rtc_gpio_mask : 18;
uint32_t ext0_trigger_level : 1;
uint32_t ext0_rtc_gpio_num : 5;
uint32_t sleep_time_adjustment;
uint64_t rtc_ticks_at_sleep_start;
} sleep_config_t;
static sleep_config_t s_config = {
.pd_options = { ESP_PD_OPTION_AUTO, ESP_PD_OPTION_AUTO, ESP_PD_OPTION_AUTO },
.wakeup_triggers = 0
};
/* Internal variable used to track if light sleep wakeup sources are to be
expected when determining wakeup cause. */
static bool s_light_sleep_wakeup = false;
/* Updating RTC_MEMORY_CRC_REG register via set_rtc_memory_crc()
is not thread-safe. */
static _lock_t lock_rtc_memory_crc;
static const char* TAG = "sleep";
static uint32_t get_power_down_flags(void);
static void ext0_wakeup_prepare(void);
static void ext1_wakeup_prepare(void);
static void timer_wakeup_prepare(void);
static void touch_wakeup_prepare(void);
/* Wake from deep sleep stub
See esp_deepsleep.h esp_wake_deep_sleep() comments for details.
*/
esp_deep_sleep_wake_stub_fn_t esp_get_deep_sleep_wake_stub(void)
{
_lock_acquire(&lock_rtc_memory_crc);
uint32_t stored_crc = REG_READ(RTC_MEMORY_CRC_REG);
set_rtc_memory_crc();
uint32_t calc_crc = REG_READ(RTC_MEMORY_CRC_REG);
REG_WRITE(RTC_MEMORY_CRC_REG, stored_crc);
_lock_release(&lock_rtc_memory_crc);
if (stored_crc != calc_crc) {
return NULL;
}
esp_deep_sleep_wake_stub_fn_t stub_ptr = (esp_deep_sleep_wake_stub_fn_t) REG_READ(RTC_ENTRY_ADDR_REG);
if (!esp_ptr_executable(stub_ptr)) {
return NULL;
}
return stub_ptr;
}
void esp_set_deep_sleep_wake_stub(esp_deep_sleep_wake_stub_fn_t new_stub)
{
_lock_acquire(&lock_rtc_memory_crc);
REG_WRITE(RTC_ENTRY_ADDR_REG, (uint32_t)new_stub);
set_rtc_memory_crc();
_lock_release(&lock_rtc_memory_crc);
}
void RTC_IRAM_ATTR esp_default_wake_deep_sleep(void) {
/* Clear MMU for CPU 0 */
REG_SET_BIT(EXTMEM_CACHE_DBG_INT_ENA_REG, EXTMEM_CACHE_DBG_EN);
}
void __attribute__((weak, alias("esp_default_wake_deep_sleep"))) esp_wake_deep_sleep(void);
void esp_deep_sleep(uint64_t time_in_us)
{
esp_sleep_enable_timer_wakeup(time_in_us);
esp_deep_sleep_start();
}
static void IRAM_ATTR flush_uarts(void)
{
for (int i = 0; i < SOC_UART_NUM; ++i) {
if (periph_ll_periph_enabled(PERIPH_UART0_MODULE + i)) {
esp_rom_uart_tx_wait_idle(i);
}
}
}
static void IRAM_ATTR suspend_uarts(void)
{
for (int i = 0; i < SOC_UART_NUM; ++i) {
if (periph_ll_periph_enabled(PERIPH_UART0_MODULE + i)) {
REG_CLR_BIT(UART_FLOW_CONF_REG(i), UART_FORCE_XON);
REG_SET_BIT(UART_FLOW_CONF_REG(i), UART_SW_FLOW_CON_EN | UART_FORCE_XOFF);
while (REG_GET_FIELD(UART_FSM_STATUS_REG(i), UART_ST_UTX_OUT) != 0) {
;
}
}
}
}
static void IRAM_ATTR resume_uarts(void)
{
for (int i = 0; i < SOC_UART_NUM; ++i) {
if (periph_ll_periph_enabled(PERIPH_UART0_MODULE + i)) {
REG_CLR_BIT(UART_FLOW_CONF_REG(i), UART_FORCE_XOFF);
REG_SET_BIT(UART_FLOW_CONF_REG(i), UART_FORCE_XON);
REG_CLR_BIT(UART_FLOW_CONF_REG(i), UART_SW_FLOW_CON_EN | UART_FORCE_XON);
}
}
}
static uint32_t IRAM_ATTR esp_sleep_start(uint32_t pd_flags)
{
// Stop UART output so that output is not lost due to APB frequency change.
// For light sleep, suspend UART output — it will resume after wakeup.
// For deep sleep, wait for the contents of UART FIFO to be sent.
if (pd_flags & RTC_SLEEP_PD_DIG) {
flush_uarts();
} else {
suspend_uarts();
}
// Save current frequency and switch to XTAL
// Save current frequency and switch to XTAL
rtc_cpu_freq_config_t cpu_freq_config;
rtc_clk_cpu_freq_get_config(&cpu_freq_config);
rtc_clk_cpu_freq_set_xtal();
// Configure pins for external wakeup
if (s_config.wakeup_triggers & RTC_EXT0_TRIG_EN) {
ext0_wakeup_prepare();
}
if (s_config.wakeup_triggers & RTC_EXT1_TRIG_EN) {
ext1_wakeup_prepare();
}
// Enable ULP wakeup
if (s_config.wakeup_triggers & RTC_ULP_TRIG_EN) {
// no-op for esp32s2
}
// Enable Touch wakeup
if (s_config.wakeup_triggers & RTC_TOUCH_TRIG_EN) {
touch_wakeup_prepare();
}
uint32_t reject_triggers = 0;
if ((pd_flags & RTC_SLEEP_PD_DIG) == 0) {
/* Light sleep, enable sleep reject for faster return from this function,
* in case the wakeup is already triggerred.
*/
reject_triggers = s_config.wakeup_triggers;
}
// Enter sleep
rtc_sleep_config_t config = RTC_SLEEP_CONFIG_DEFAULT(pd_flags);
rtc_sleep_init(config);
// Configure timer wakeup
if ((s_config.wakeup_triggers & RTC_TIMER_TRIG_EN) &&
s_config.sleep_duration > 0) {
timer_wakeup_prepare();
}
uint32_t result = rtc_sleep_start(s_config.wakeup_triggers, reject_triggers, 1);
// Restore CPU frequency
rtc_clk_cpu_freq_set_config(&cpu_freq_config);
// re-enable UART output
resume_uarts();
return result;
}
void IRAM_ATTR esp_deep_sleep_start(void)
{
// record current RTC time
s_config.rtc_ticks_at_sleep_start = rtc_time_get();
esp_sync_counters_rtc_and_frc();
// Configure wake stub
if (esp_get_deep_sleep_wake_stub() == NULL) {
esp_set_deep_sleep_wake_stub(esp_wake_deep_sleep);
}
// Decide which power domains can be powered down
uint32_t pd_flags = get_power_down_flags();
// Correct the sleep time
s_config.sleep_time_adjustment = DEEP_SLEEP_TIME_OVERHEAD_US;
// Enter sleep
esp_sleep_start(RTC_SLEEP_PD_DIG | RTC_SLEEP_PD_VDDSDIO | pd_flags);
// Because RTC is in a slower clock domain than the CPU, it
// can take several CPU cycles for the sleep mode to start.
while (1) {
;
}
}
/**
* Helper function which handles entry to and exit from light sleep
* Placed into IRAM as flash may need some time to be powered on.
*/
static esp_err_t esp_light_sleep_inner(uint32_t pd_flags,
uint32_t flash_enable_time_us,
rtc_vddsdio_config_t vddsdio_config) IRAM_ATTR __attribute__((noinline));
static esp_err_t esp_light_sleep_inner(uint32_t pd_flags,
uint32_t flash_enable_time_us,
rtc_vddsdio_config_t vddsdio_config)
{
// Enter sleep
esp_err_t err = esp_sleep_start(pd_flags);
// If VDDSDIO regulator was controlled by RTC registers before sleep,
// restore the configuration.
if (vddsdio_config.force) {
rtc_vddsdio_set_config(vddsdio_config);
}
// If SPI flash was powered down, wait for it to become ready
if (pd_flags & RTC_SLEEP_PD_VDDSDIO) {
// Wait for the flash chip to start up
esp_rom_delay_us(flash_enable_time_us);
}
return err;
}
esp_err_t esp_light_sleep_start(void)
{
static portMUX_TYPE light_sleep_lock = portMUX_INITIALIZER_UNLOCKED;
portENTER_CRITICAL(&light_sleep_lock);
/* We will be calling esp_timer_private_advance inside DPORT access critical
* section. Make sure the code on the other CPU is not holding esp_timer
* lock, otherwise there will be deadlock.
*/
esp_timer_private_lock();
s_config.rtc_ticks_at_sleep_start = rtc_time_get();
uint64_t frc_time_at_start = esp_timer_get_time();
DPORT_STALL_OTHER_CPU_START();
// Decide which power domains can be powered down
uint32_t pd_flags = get_power_down_flags();
// Amount of time to subtract from actual sleep time.
// This is spent on entering and leaving light sleep.
s_config.sleep_time_adjustment = LIGHT_SLEEP_TIME_OVERHEAD_US;
// Decide if VDD_SDIO needs to be powered down;
// If it needs to be powered down, adjust sleep time.
const uint32_t flash_enable_time_us = VDD_SDIO_POWERUP_TO_FLASH_READ_US;
#ifndef CONFIG_SPIRAM
const uint32_t vddsdio_pd_sleep_duration = MAX(FLASH_PD_MIN_SLEEP_TIME_US,
flash_enable_time_us + LIGHT_SLEEP_TIME_OVERHEAD_US + LIGHT_SLEEP_MIN_TIME_US);
if (s_config.sleep_duration > vddsdio_pd_sleep_duration) {
pd_flags |= RTC_SLEEP_PD_VDDSDIO;
s_config.sleep_time_adjustment += flash_enable_time_us;
}
#endif //CONFIG_SPIRAM
rtc_vddsdio_config_t vddsdio_config = rtc_vddsdio_get_config();
// Safety net: enable WDT in case exit from light sleep fails
wdt_hal_context_t rtc_wdt_ctx = {.inst = WDT_RWDT, .rwdt_dev = &RTCCNTL};
bool wdt_was_enabled = wdt_hal_is_enabled(&rtc_wdt_ctx); // If WDT was enabled in the user code, then do not change it here.
if (!wdt_was_enabled) {
wdt_hal_init(&rtc_wdt_ctx, WDT_RWDT, 0, false);
uint32_t stage_timeout_ticks = (uint32_t)(1000ULL * rtc_clk_slow_freq_get_hz() / 1000ULL);
wdt_hal_write_protect_disable(&rtc_wdt_ctx);
wdt_hal_config_stage(&rtc_wdt_ctx, WDT_STAGE0, stage_timeout_ticks, WDT_STAGE_ACTION_RESET_RTC);
wdt_hal_enable(&rtc_wdt_ctx);
wdt_hal_write_protect_enable(&rtc_wdt_ctx);
}
// Enter sleep, then wait for flash to be ready on wakeup
esp_err_t err = esp_light_sleep_inner(pd_flags,
flash_enable_time_us, vddsdio_config);
s_light_sleep_wakeup = true;
// FRC1 has been clock gated for the duration of the sleep, correct for that.
uint64_t rtc_ticks_at_end = rtc_time_get();
uint64_t frc_time_at_end = esp_timer_get_time();
uint64_t rtc_time_diff = rtc_time_slowclk_to_us(rtc_ticks_at_end - s_config.rtc_ticks_at_sleep_start,
esp_clk_slowclk_cal_get());
uint64_t frc_time_diff = frc_time_at_end - frc_time_at_start;
int64_t time_diff = rtc_time_diff - frc_time_diff;
/* Small negative values (up to 1 RTC_SLOW clock period) are possible,
* for very small values of sleep_duration. Ignore those to keep esp_timer
* monotonic.
*/
if (time_diff > 0) {
esp_timer_private_advance(time_diff);
}
esp_set_time_from_rtc();
esp_timer_private_unlock();
DPORT_STALL_OTHER_CPU_END();
if (!wdt_was_enabled) {
wdt_hal_write_protect_disable(&rtc_wdt_ctx);
wdt_hal_disable(&rtc_wdt_ctx);
wdt_hal_write_protect_enable(&rtc_wdt_ctx);
}
portEXIT_CRITICAL(&light_sleep_lock);
return err;
}
esp_err_t esp_sleep_disable_wakeup_source(esp_sleep_source_t source)
{
// For most of sources it is enough to set trigger mask in local
// configuration structure. The actual RTC wake up options
// will be updated by esp_sleep_start().
if (source == ESP_SLEEP_WAKEUP_ALL) {
s_config.wakeup_triggers = 0;
} else if (CHECK_SOURCE(source, ESP_SLEEP_WAKEUP_TIMER, RTC_TIMER_TRIG_EN)) {
s_config.wakeup_triggers &= ~RTC_TIMER_TRIG_EN;
s_config.sleep_duration = 0;
} else if (CHECK_SOURCE(source, ESP_SLEEP_WAKEUP_EXT0, RTC_EXT0_TRIG_EN)) {
s_config.ext0_rtc_gpio_num = 0;
s_config.ext0_trigger_level = 0;
s_config.wakeup_triggers &= ~RTC_EXT0_TRIG_EN;
} else if (CHECK_SOURCE(source, ESP_SLEEP_WAKEUP_EXT1, RTC_EXT1_TRIG_EN)) {
s_config.ext1_rtc_gpio_mask = 0;
s_config.ext1_trigger_mode = 0;
s_config.wakeup_triggers &= ~RTC_EXT1_TRIG_EN;
} else if (CHECK_SOURCE(source, ESP_SLEEP_WAKEUP_TOUCHPAD, RTC_TOUCH_TRIG_EN)) {
s_config.wakeup_triggers &= ~RTC_TOUCH_TRIG_EN;
} else if (CHECK_SOURCE(source, ESP_SLEEP_WAKEUP_GPIO, RTC_GPIO_TRIG_EN)) {
s_config.wakeup_triggers &= ~RTC_GPIO_TRIG_EN;
} else if (CHECK_SOURCE(source, ESP_SLEEP_WAKEUP_UART, (RTC_UART0_TRIG_EN | RTC_UART1_TRIG_EN))) {
s_config.wakeup_triggers &= ~(RTC_UART0_TRIG_EN | RTC_UART1_TRIG_EN);
}
#ifdef CONFIG_ESP32S2_ULP_COPROC_ENABLED
else if (CHECK_SOURCE(source, ESP_SLEEP_WAKEUP_ULP, RTC_ULP_TRIG_EN)) {
s_config.wakeup_triggers &= ~RTC_ULP_TRIG_EN;
}
#endif
else {
ESP_LOGE(TAG, "Incorrect wakeup source (%d) to disable.", (int) source);
return ESP_ERR_INVALID_STATE;
}
return ESP_OK;
}
esp_err_t esp_sleep_enable_ulp_wakeup(void)
{
s_config.wakeup_triggers |= (RTC_ULP_TRIG_EN | RTC_COCPU_TRIG_EN | RTC_COCPU_TRAP_TRIG_EN);
return ESP_OK;
}
esp_err_t esp_sleep_enable_timer_wakeup(uint64_t time_in_us)
{
s_config.wakeup_triggers |= RTC_TIMER_TRIG_EN;
s_config.sleep_duration = time_in_us;
return ESP_OK;
}
static void timer_wakeup_prepare(void)
{
uint32_t period = esp_clk_slowclk_cal_get();
int64_t sleep_duration = (int64_t) s_config.sleep_duration - (int64_t) s_config.sleep_time_adjustment;
if (sleep_duration < 0) {
sleep_duration = 0;
}
int64_t rtc_count_delta = rtc_time_us_to_slowclk(sleep_duration, period);
rtc_sleep_set_wakeup_time(s_config.rtc_ticks_at_sleep_start + rtc_count_delta);
SET_PERI_REG_MASK(RTC_CNTL_INT_CLR_REG, RTC_CNTL_MAIN_TIMER_INT_CLR_M);
SET_PERI_REG_MASK(RTC_CNTL_SLP_TIMER1_REG, RTC_CNTL_MAIN_TIMER_ALARM_EN_M);
}
/* In deep sleep mode, only the sleep channel is supported, and other touch channels should be turned off. */
static void touch_wakeup_prepare(void)
{
touch_pad_sleep_channel_t slp_config;
touch_pad_fsm_stop();
touch_pad_clear_channel_mask(SOC_TOUCH_SENSOR_BIT_MASK_MAX);
touch_pad_sleep_channel_get_info(&slp_config);
touch_pad_set_channel_mask(BIT(slp_config.touch_num));
touch_pad_fsm_start();
}
esp_err_t esp_sleep_enable_touchpad_wakeup(void)
{
if (s_config.wakeup_triggers & (RTC_EXT0_TRIG_EN)) {
ESP_LOGE(TAG, "Conflicting wake-up trigger: ext0");
return ESP_ERR_INVALID_STATE;
}
s_config.wakeup_triggers |= RTC_TOUCH_TRIG_EN;
return ESP_OK;
}
touch_pad_t esp_sleep_get_touchpad_wakeup_status(void)
{
if (esp_sleep_get_wakeup_cause() != ESP_SLEEP_WAKEUP_TOUCHPAD) {
return TOUCH_PAD_MAX;
}
touch_pad_t pad_num;
esp_err_t ret = touch_pad_get_wakeup_status(&pad_num); //TODO 723diff commit id:fda9ada1b
assert(ret == ESP_OK && "wakeup reason is RTC_TOUCH_TRIG_EN but SENS_TOUCH_MEAS_EN is zero");
return pad_num;
}
esp_err_t esp_sleep_enable_ext0_wakeup(gpio_num_t gpio_num, int level)
{
if (level < 0 || level > 1) {
return ESP_ERR_INVALID_ARG;
}
if (!RTC_GPIO_IS_VALID_GPIO(gpio_num)) {
return ESP_ERR_INVALID_ARG;
}
if (s_config.wakeup_triggers & (RTC_TOUCH_TRIG_EN | RTC_ULP_TRIG_EN)) {
ESP_LOGE(TAG, "Conflicting wake-up triggers: touch / ULP");
return ESP_ERR_INVALID_STATE;
}
s_config.ext0_rtc_gpio_num = rtc_io_number_get(gpio_num);
s_config.ext0_trigger_level = level;
s_config.wakeup_triggers |= RTC_EXT0_TRIG_EN;
return ESP_OK;
}
static void ext0_wakeup_prepare(void)
{
int rtc_gpio_num = s_config.ext0_rtc_gpio_num;
// Set GPIO to be used for wakeup
REG_SET_FIELD(RTC_IO_EXT_WAKEUP0_REG, RTC_IO_EXT_WAKEUP0_SEL, rtc_gpio_num);
// Set level which will trigger wakeup
SET_PERI_REG_BITS(RTC_CNTL_EXT_WAKEUP_CONF_REG, 0x1,
s_config.ext0_trigger_level, RTC_CNTL_EXT_WAKEUP0_LV_S);
// Find GPIO descriptor in the rtc_io_desc table and configure the pad
const rtc_io_desc_t* desc = &rtc_io_desc[rtc_gpio_num];
REG_SET_BIT(desc->reg, desc->mux);
SET_PERI_REG_BITS(desc->reg, 0x3, 0, desc->func);
REG_SET_BIT(desc->reg, desc->ie);
}
esp_err_t esp_sleep_enable_ext1_wakeup(uint64_t mask, esp_sleep_ext1_wakeup_mode_t mode)
{
if (mode > ESP_EXT1_WAKEUP_ANY_HIGH) {
return ESP_ERR_INVALID_ARG;
}
// Translate bit map of GPIO numbers into the bit map of RTC IO numbers
uint32_t rtc_gpio_mask = 0;
for (int gpio = 0; mask; ++gpio, mask >>= 1) {
if ((mask & 1) == 0) {
continue;
}
if (!RTC_GPIO_IS_VALID_GPIO(gpio)) {
ESP_LOGE(TAG, "Not an RTC IO: GPIO%d", gpio);
return ESP_ERR_INVALID_ARG;
}
rtc_gpio_mask |= BIT(rtc_io_number_get(gpio));
}
s_config.ext1_rtc_gpio_mask = rtc_gpio_mask;
s_config.ext1_trigger_mode = mode;
s_config.wakeup_triggers |= RTC_EXT1_TRIG_EN;
return ESP_OK;
}
static void ext1_wakeup_prepare(void)
{
// Configure all RTC IOs selected as ext1 wakeup inputs
uint32_t rtc_gpio_mask = s_config.ext1_rtc_gpio_mask;
for (int gpio = 0; gpio < GPIO_PIN_COUNT && rtc_gpio_mask != 0; ++gpio) {
int rtc_pin = rtc_io_number_get(gpio);
if ((rtc_gpio_mask & BIT(rtc_pin)) == 0) {
continue;
}
const rtc_io_desc_t* desc = &rtc_io_desc[rtc_pin];
// Route pad to RTC
REG_SET_BIT(desc->reg, desc->mux);
SET_PERI_REG_BITS(desc->reg, 0x3, 0, desc->func);
// set input enable in sleep mode
REG_SET_BIT(desc->reg, desc->ie);
// Pad configuration depends on RTC_PERIPH state in sleep mode
if (s_config.pd_options[ESP_PD_DOMAIN_RTC_PERIPH] != ESP_PD_OPTION_ON) {
// RTC_PERIPH will be powered down, so RTC_IO_ registers will
// loose their state. Lock pad configuration.
// Pullups/pulldowns also need to be disabled.
REG_CLR_BIT(desc->reg, desc->pulldown);
REG_CLR_BIT(desc->reg, desc->pullup);
REG_SET_BIT(RTC_CNTL_PAD_HOLD_REG, desc->hold_force);
}
// Keep track of pins which are processed to bail out early
rtc_gpio_mask &= ~BIT(rtc_pin);
}
// Clear state from previous wakeup
REG_SET_BIT(RTC_CNTL_EXT_WAKEUP1_REG, RTC_CNTL_EXT_WAKEUP1_STATUS_CLR);
// Set pins to be used for wakeup
REG_SET_FIELD(RTC_CNTL_EXT_WAKEUP1_REG, RTC_CNTL_EXT_WAKEUP1_SEL, s_config.ext1_rtc_gpio_mask);
// Set logic function (any low, all high)
SET_PERI_REG_BITS(RTC_CNTL_EXT_WAKEUP_CONF_REG, 0x1,
s_config.ext1_trigger_mode, RTC_CNTL_EXT_WAKEUP1_LV_S);
}
uint64_t esp_sleep_get_ext1_wakeup_status(void)
{
if (esp_sleep_get_wakeup_cause() != ESP_SLEEP_WAKEUP_EXT1) {
return 0;
}
uint32_t status = REG_GET_FIELD(RTC_CNTL_EXT_WAKEUP1_STATUS_REG, RTC_CNTL_EXT_WAKEUP1_STATUS);
// Translate bit map of RTC IO numbers into the bit map of GPIO numbers
uint64_t gpio_mask = 0;
for (int gpio = 0; gpio < GPIO_PIN_COUNT; ++gpio) {
if (!RTC_GPIO_IS_VALID_GPIO(gpio)) {
continue;
}
int rtc_pin = rtc_io_number_get(gpio);
if ((status & BIT(rtc_pin)) == 0) {
continue;
}
gpio_mask |= 1ULL << gpio;
}
return gpio_mask;
}
esp_err_t esp_sleep_enable_gpio_wakeup(void)
{
if (s_config.wakeup_triggers & (RTC_TOUCH_TRIG_EN | RTC_ULP_TRIG_EN)) {
ESP_LOGE(TAG, "Conflicting wake-up triggers: touch / ULP");
return ESP_ERR_INVALID_STATE;
}
s_config.wakeup_triggers |= RTC_GPIO_TRIG_EN;
return ESP_OK;
}
esp_err_t esp_sleep_enable_uart_wakeup(int uart_num)
{
if (uart_num == 0) {
s_config.wakeup_triggers |= RTC_UART0_TRIG_EN;
} else if (uart_num == 1) {
s_config.wakeup_triggers |= RTC_UART1_TRIG_EN;
} else {
return ESP_ERR_INVALID_ARG;
}
return ESP_OK;
}
esp_err_t esp_sleep_enable_wifi_wakeup(void)
{
s_config.wakeup_triggers |= RTC_WIFI_TRIG_EN;
return ESP_OK;
}
esp_sleep_wakeup_cause_t esp_sleep_get_wakeup_cause(void)
{
if (rtc_get_reset_reason(0) != DEEPSLEEP_RESET && !s_light_sleep_wakeup) {
return ESP_SLEEP_WAKEUP_UNDEFINED;
}
uint32_t wakeup_cause = REG_GET_FIELD(RTC_CNTL_SLP_WAKEUP_CAUSE_REG, RTC_CNTL_WAKEUP_CAUSE);
if (wakeup_cause & RTC_EXT0_TRIG_EN) {
return ESP_SLEEP_WAKEUP_EXT0;
} else if (wakeup_cause & RTC_EXT1_TRIG_EN) {
return ESP_SLEEP_WAKEUP_EXT1;
} else if (wakeup_cause & RTC_TIMER_TRIG_EN) {
return ESP_SLEEP_WAKEUP_TIMER;
} else if (wakeup_cause & RTC_TOUCH_TRIG_EN) {
return ESP_SLEEP_WAKEUP_TOUCHPAD;
} else if (wakeup_cause & RTC_ULP_TRIG_EN) {
return ESP_SLEEP_WAKEUP_ULP;
} else if (wakeup_cause & RTC_GPIO_TRIG_EN) {
return ESP_SLEEP_WAKEUP_GPIO;
} else if (wakeup_cause & (RTC_UART0_TRIG_EN | RTC_UART1_TRIG_EN)) {
return ESP_SLEEP_WAKEUP_UART;
} else if (wakeup_cause & RTC_WIFI_TRIG_EN) {
return ESP_SLEEP_WAKEUP_WIFI;
} else if (wakeup_cause & RTC_COCPU_TRIG_EN) {
return ESP_SLEEP_WAKEUP_ULP;
} else if (wakeup_cause & RTC_COCPU_TRAP_TRIG_EN) {
return ESP_SLEEP_WAKEUP_COCPU_TRAP_TRIG;
} else {
return ESP_SLEEP_WAKEUP_UNDEFINED;
}
}
esp_err_t esp_sleep_pd_config(esp_sleep_pd_domain_t domain,
esp_sleep_pd_option_t option)
{
if (domain >= ESP_PD_DOMAIN_MAX || option > ESP_PD_OPTION_AUTO) {
return ESP_ERR_INVALID_ARG;
}
s_config.pd_options[domain] = option;
return ESP_OK;
}
static uint32_t get_power_down_flags(void)
{
// Where needed, convert AUTO options to ON. Later interpret AUTO as OFF.
// RTC_SLOW_MEM is needed for the ULP, so keep RTC_SLOW_MEM powered up if ULP
// is used and RTC_SLOW_MEM is Auto.
// If there is any data placed into .rtc.data or .rtc.bss segments, and
// RTC_SLOW_MEM is Auto, keep it powered up as well.
// Labels are defined in the linker script, see esp32s2.ld.
extern int _rtc_slow_length;
if ((s_config.pd_options[ESP_PD_DOMAIN_RTC_SLOW_MEM] == ESP_PD_OPTION_AUTO) &&
((size_t) &_rtc_slow_length > 0 ||
(s_config.wakeup_triggers & RTC_ULP_TRIG_EN))) {
s_config.pd_options[ESP_PD_DOMAIN_RTC_SLOW_MEM] = ESP_PD_OPTION_ON;
}
// RTC_FAST_MEM is needed for deep sleep stub.
// If RTC_FAST_MEM is Auto, keep it powered on, so that deep sleep stub
// can run.
// In the new chip revision, deep sleep stub will be optional,
// and this can be changed.
if (s_config.pd_options[ESP_PD_DOMAIN_RTC_FAST_MEM] == ESP_PD_OPTION_AUTO) {
s_config.pd_options[ESP_PD_DOMAIN_RTC_FAST_MEM] = ESP_PD_OPTION_ON;
}
// RTC_PERIPH is needed for EXT0 wakeup and GPIO wakeup.
// If RTC_PERIPH is auto, and EXT0/GPIO aren't enabled, power down RTC_PERIPH.
if (s_config.pd_options[ESP_PD_DOMAIN_RTC_PERIPH] == ESP_PD_OPTION_AUTO) {
if (s_config.wakeup_triggers & (RTC_EXT0_TRIG_EN | RTC_GPIO_TRIG_EN)) {
s_config.pd_options[ESP_PD_DOMAIN_RTC_PERIPH] = ESP_PD_OPTION_ON;
} else if (s_config.wakeup_triggers & (RTC_TOUCH_TRIG_EN | RTC_ULP_TRIG_EN)) {
// In both rev. 0 and rev. 1 of ESP32, forcing power up of RTC_PERIPH
// prevents ULP timer and touch FSMs from working correctly.
s_config.pd_options[ESP_PD_DOMAIN_RTC_PERIPH] = ESP_PD_OPTION_OFF;
}
}
if (s_config.pd_options[ESP_PD_DOMAIN_XTAL] == ESP_PD_OPTION_AUTO) {
s_config.pd_options[ESP_PD_DOMAIN_XTAL] = ESP_PD_OPTION_OFF;
}
const char* option_str[] = {"OFF", "ON", "AUTO(OFF)" /* Auto works as OFF */};
ESP_LOGD(TAG, "RTC_PERIPH: %s, RTC_SLOW_MEM: %s, RTC_FAST_MEM: %s",
option_str[s_config.pd_options[ESP_PD_DOMAIN_RTC_PERIPH]],
option_str[s_config.pd_options[ESP_PD_DOMAIN_RTC_SLOW_MEM]],
option_str[s_config.pd_options[ESP_PD_DOMAIN_RTC_FAST_MEM]]);
// Prepare flags based on the selected options
uint32_t pd_flags = 0;
if (s_config.pd_options[ESP_PD_DOMAIN_RTC_FAST_MEM] != ESP_PD_OPTION_ON) {
pd_flags |= RTC_SLEEP_PD_RTC_FAST_MEM;
}
if (s_config.pd_options[ESP_PD_DOMAIN_RTC_SLOW_MEM] != ESP_PD_OPTION_ON) {
pd_flags |= RTC_SLEEP_PD_RTC_SLOW_MEM;
}
if (s_config.pd_options[ESP_PD_DOMAIN_RTC_PERIPH] != ESP_PD_OPTION_ON) {
pd_flags |= RTC_SLEEP_PD_RTC_PERIPH;
}
// if (s_config.pd_options[ESP_PD_DOMAIN_XTAL] != ESP_PD_OPTION_ON) {
// pd_flags |= RTC_SLEEP_PD_XTAL;
// }
return pd_flags;
}

2
components/esp_system/CMakeLists.txt
View File

@ -1,4 +1,4 @@
idf_component_register(SRCS "panic.c" "system_api.c" "startup.c" "system_time.c"
idf_component_register(SRCS "panic.c" "system_api.c" "startup.c" "sleep_modes.c" "system_time.c"
INCLUDE_DIRS include
PRIV_REQUIRES spi_flash app_update
# requirements due to startup code

29
components/esp32/include/esp_sleep.h → components/esp_system/include/esp_sleep.h
View File

@ -16,8 +16,9 @@
#include <stdint.h>
#include "esp_err.h"
#include "driver/gpio.h"
#include "driver/touch_pad.h"
#include "hal/touch_sensor_types.h"
#include "hal/gpio_types.h"
#ifdef __cplusplus
extern "C" {
@ -64,6 +65,9 @@ typedef enum {
ESP_SLEEP_WAKEUP_ULP, //!< Wakeup caused by ULP program
ESP_SLEEP_WAKEUP_GPIO, //!< Wakeup caused by GPIO (light sleep only)
ESP_SLEEP_WAKEUP_UART, //!< Wakeup caused by UART (light sleep only)
ESP_SLEEP_WAKEUP_WIFI, //!< Wakeup caused by WIFI (light sleep only)
ESP_SLEEP_WAKEUP_COCPU, //!< Wakeup caused by COCPU int
ESP_SLEEP_WAKEUP_COCPU_TRAP_TRIG, //!< Wakeup caused by COCPU crash
} esp_sleep_source_t;
/* Leave this type define for compatibility */
@ -89,7 +93,7 @@ esp_err_t esp_sleep_disable_wakeup_source(esp_sleep_source_t source);
/**
* @brief Enable wakeup by ULP coprocessor
* @note ULP wakeup source cannot be used when RTC_PERIPH power domain is forced
* @note On ESP32, ULP wakeup source cannot be used when RTC_PERIPH power domain is forced
* to be powered on (ESP_PD_OPTION_ON) or when ext0 wakeup source is used.
* @return
* - ESP_OK on success
@ -110,9 +114,8 @@ esp_err_t esp_sleep_enable_timer_wakeup(uint64_t time_in_us);
/**
* @brief Enable wakeup by touch sensor
*
* @note Touch wakeup source cannot be used when RTC_PERIPH power domain is forced
* to be powered on (ESP_PD_OPTION_ON) or when ext0 wakeup
* source is used.
* @note In revisions 0 and 1 of the ESP32, touch wakeup source
* can not be used when RTC_PERIPH power domain is forced
*
* @note The FSM mode of the touch button should be configured
* as the timer trigger mode.
@ -145,7 +148,8 @@ touch_pad_t esp_sleep_get_touchpad_wakeup_status(void);
* @note This function does not modify pin configuration. The pin is
* configured in esp_sleep_start, immediately before entering sleep mode.
*
* @note ext0 wakeup source cannot be used together with touch or ULP wakeup sources.
* @note In revisions 0 and 1 of the ESP32, ext0 wakeup source
* can not be used together with touch or ULP wakeup sources.
*
* @param gpio_num GPIO number used as wakeup source. Only GPIOs which are have RTC
* functionality can be used: 0,2,4,12-15,25-27,32-39.
@ -202,7 +206,8 @@ esp_err_t esp_sleep_enable_ext1_wakeup(uint64_t mask, esp_sleep_ext1_wakeup_mode
* wakeup level, for each GPIO which is used for wakeup.
* Then call this function to enable wakeup feature.
*
* @note GPIO wakeup source cannot be used together with touch or ULP wakeup sources.
* @note In revisions 0 and 1 of the ESP32, GPIO wakeup source
* can not be used together with touch or ULP wakeup sources.
*
* @return
* - ESP_OK on success
@ -227,6 +232,14 @@ esp_err_t esp_sleep_enable_gpio_wakeup(void);
*/
esp_err_t esp_sleep_enable_uart_wakeup(int uart_num);
/**
* @brief Enable wakeup by WiFi MAC
* @return
* - ESP_OK on success
*/
esp_err_t esp_sleep_enable_wifi_wakeup(void);
/**
* @brief Get the bit mask of GPIOs which caused wakeup (ext1)
*

187
components/esp32/sleep_modes.c → components/esp_system/sleep_modes.c
View File

@ -15,17 +15,12 @@
#include <stddef.h>
#include <sys/lock.h>
#include <sys/param.h>
#include "esp_attr.h"
#include "esp_sleep.h"
#include "esp_private/esp_timer_private.h"
#include "esp_log.h"
#include "esp32/clk.h"
#include "esp_newlib.h"
#include "esp_spi_flash.h"
#include "esp_rom_sys.h"
#include "esp32/rom/cache.h"
#include "esp32/rom/rtc.h"
#include "esp_rom_uart.h"
#include "soc/cpu.h"
#include "soc/rtc.h"
#include "soc/spi_periph.h"
@ -34,9 +29,25 @@
#include "hal/wdt_hal.h"
#include "driver/rtc_io.h"
#include "driver/uart.h"
#include "driver/touch_sensor_common.h"
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "soc/uart_caps.h"
#include "hal/clk_gate_ll.h"
#include "sdkconfig.h"
#include "esp_rom_uart.h"
#ifdef CONFIG_IDF_TARGET_ESP32
#include "esp32/rom/cache.h"
#include "esp32/rom/rtc.h"
#include "esp32/clk.h"
#elif CONFIG_IDF_TARGET_ESP32S2
#include "esp32s2/clk.h"
#include "esp32s2/rom/cache.h"
#include "esp32s2/rom/rtc.h"
#include "esp32s2/rom/ets_sys.h"
#include "soc/extmem_reg.h"
#endif
// If light sleep time is less than that, don't power down flash
#define FLASH_PD_MIN_SLEEP_TIME_US 2000
@ -44,15 +55,25 @@
// Time from VDD_SDIO power up to first flash read in ROM code
#define VDD_SDIO_POWERUP_TO_FLASH_READ_US 700
// Extra time it takes to enter and exit light sleep and deep sleep
// For deep sleep, this is until the wake stub runs (not the app).
#ifdef CONFIG_ESP32_RTC_CLK_SRC_EXT_CRYS
#define LIGHT_SLEEP_TIME_OVERHEAD_US (650 + 30 * 240 / CONFIG_ESP32_DEFAULT_CPU_FREQ_MHZ)
#define DEEP_SLEEP_TIME_OVERHEAD_US (650 + 100 * 240 / CONFIG_ESP32_DEFAULT_CPU_FREQ_MHZ)
#ifdef CONFIG_IDF_TARGET_ESP32
#define DEFAULT_CPU_FREQ_MHZ CONFIG_ESP32_DEFAULT_CPU_FREQ_MHZ
#elif CONFIG_IDF_TARGET_ESP32S2
#define DEFAULT_CPU_FREQ_MHZ CONFIG_ESP32S2_DEFAULT_CPU_FREQ_MHZ
#endif
#if defined(CONFIG_ESP32_RTC_CLK_SRC_EXT_CRYS) || defined(CONFIG_ESP32S2_RTC_CLK_SRC_EXT_CRYS)
#define LIGHT_SLEEP_TIME_OVERHEAD_US (650 + 30 * 240 / DEFAULT_CPU_FREQ_MHZ)
#define DEEP_SLEEP_TIME_OVERHEAD_US (650 + 100 * 240 / DEFAULT_CPU_FREQ_MHZ)
#else
#define LIGHT_SLEEP_TIME_OVERHEAD_US (250 + 30 * 240 / CONFIG_ESP32_DEFAULT_CPU_FREQ_MHZ)
#define DEEP_SLEEP_TIME_OVERHEAD_US (250 + 100 * 240 / CONFIG_ESP32_DEFAULT_CPU_FREQ_MHZ)
#endif // CONFIG_ESP32_RTC_CLK_SRC
#define LIGHT_SLEEP_TIME_OVERHEAD_US (250 + 30 * 240 / DEFAULT_CPU_FREQ_MHZ)
#define DEEP_SLEEP_TIME_OVERHEAD_US (250 + 100 * 240 / DEFAULT_CPU_FREQ_MHZ)
#endif
#if defined(CONFIG_IDF_TARGET_ESP32) && defined(CONFIG_ESP32_DEEP_SLEEP_WAKEUP_DELAY)
#define DEEP_SLEEP_WAKEUP_DELAY CONFIG_ESP32_DEEP_SLEEP_WAKEUP_DELAY
#else
#define DEEP_SLEEP_WAKEUP_DELAY 0
#endif
// Minimal amount of time we can sleep for
#define LIGHT_SLEEP_MIN_TIME_US 200
@ -95,6 +116,11 @@ static void ext0_wakeup_prepare(void);
static void ext1_wakeup_prepare(void);
static void timer_wakeup_prepare(void);
#ifdef CONFIG_IDF_TARGET_ESP32S2
static void touch_wakeup_prepare(void);
#endif
/* Wake from deep sleep stub
See esp_deepsleep.h esp_wake_deep_sleep() comments for details.
*/
@ -127,17 +153,21 @@ void esp_set_deep_sleep_wake_stub(esp_deep_sleep_wake_stub_fn_t new_stub)
void RTC_IRAM_ATTR esp_default_wake_deep_sleep(void) {
/* Clear MMU for CPU 0 */
#if CONFIG_IDF_TARGET_ESP32
_DPORT_REG_WRITE(DPORT_PRO_CACHE_CTRL1_REG,
_DPORT_REG_READ(DPORT_PRO_CACHE_CTRL1_REG) | DPORT_PRO_CACHE_MMU_IA_CLR);
_DPORT_REG_WRITE(DPORT_PRO_CACHE_CTRL1_REG,
_DPORT_REG_READ(DPORT_PRO_CACHE_CTRL1_REG) & (~DPORT_PRO_CACHE_MMU_IA_CLR));
#if CONFIG_ESP32_DEEP_SLEEP_WAKEUP_DELAY > 0
#if DEEP_SLEEP_WAKEUP_DELAY > 0
// ROM code has not started yet, so we need to set delay factor
// used by esp_rom_delay_us first.
ets_update_cpu_frequency_rom(ets_get_detected_xtal_freq() / 1000000);
// This delay is configured in menuconfig, it can be used to give
// the flash chip some time to become ready.
esp_rom_delay_us(CONFIG_ESP32_DEEP_SLEEP_WAKEUP_DELAY);
esp_rom_delay_us(DEEP_SLEEP_WAKEUP_DELAY);
#endif
#elif CONFIG_IDF_TARGET_ESP32S2
REG_SET_BIT(EXTMEM_CACHE_DBG_INT_ENA_REG, EXTMEM_CACHE_DBG_EN);
#endif
}
@ -149,29 +179,57 @@ void esp_deep_sleep(uint64_t time_in_us)
esp_deep_sleep_start();
}
// [refactor-todo] provide target logic for body of uart functions below
static void IRAM_ATTR flush_uarts(void)
{
for (int i = 0; i < 3; ++i) {
for (int i = 0; i < SOC_UART_NUM; ++i) {
#ifdef CONFIG_IDF_TARGET_ESP32
esp_rom_uart_tx_wait_idle(i);
#elif CONFIG_IDF_TARGET_ESP32S2
if (periph_ll_periph_enabled(PERIPH_UART0_MODULE + i)) {
esp_rom_uart_tx_wait_idle(i);
}
#endif
}
}
static void IRAM_ATTR suspend_uarts(void)
{
for (int i = 0; i < 3; ++i) {
for (int i = 0; i < SOC_UART_NUM; ++i) {
#ifdef CONFIG_IDF_TARGET_ESP32
/* Note: Set `UART_FORCE_XOFF` can't stop new Tx request. */
REG_SET_BIT(UART_FLOW_CONF_REG(i), UART_FORCE_XOFF);
while (REG_GET_FIELD(UART_STATUS_REG(i), UART_ST_UTX_OUT) != 0) {
;
}
#elif CONFIG_IDF_TARGET_ESP32S2
if (periph_ll_periph_enabled(PERIPH_UART0_MODULE + i)) {
REG_CLR_BIT(UART_FLOW_CONF_REG(i), UART_FORCE_XON);
REG_SET_BIT(UART_FLOW_CONF_REG(i), UART_SW_FLOW_CON_EN | UART_FORCE_XOFF);
while (REG_GET_FIELD(UART_FSM_STATUS_REG(i), UART_ST_UTX_OUT) != 0) {
;
}
}
#endif
}
}
static void IRAM_ATTR resume_uarts(void)
{
for (int i = 0; i < 3; ++i) {
for (int i = 0; i < SOC_UART_NUM; ++i) {
#ifdef CONFIG_IDF_TARGET_ESP32
REG_CLR_BIT(UART_FLOW_CONF_REG(i), UART_FORCE_XOFF);
REG_SET_BIT(UART_FLOW_CONF_REG(i), UART_FORCE_XON);
REG_CLR_BIT(UART_FLOW_CONF_REG(i), UART_FORCE_XON);
#elif CONFIG_IDF_TARGET_ESP32S2
if (periph_ll_periph_enabled(PERIPH_UART0_MODULE + i)) {
REG_CLR_BIT(UART_FLOW_CONF_REG(i), UART_FORCE_XON);
REG_SET_BIT(UART_FLOW_CONF_REG(i), UART_SW_FLOW_CON_EN | UART_FORCE_XOFF);
while (REG_GET_FIELD(UART_FSM_STATUS_REG(i), UART_ST_UTX_OUT) != 0) {
;
}
}
#endif
}
}
@ -198,17 +256,31 @@ static uint32_t IRAM_ATTR esp_sleep_start(uint32_t pd_flags)
if (s_config.wakeup_triggers & RTC_EXT1_TRIG_EN) {
ext1_wakeup_prepare();
}
#ifdef CONFIG_IDF_TARGET_ESP32
// Enable ULP wakeup
if (s_config.wakeup_triggers & RTC_ULP_TRIG_EN) {
SET_PERI_REG_MASK(RTC_CNTL_STATE0_REG, RTC_CNTL_ULP_CP_WAKEUP_FORCE_EN);
}
#endif
#ifdef CONFIG_IDF_TARGET_ESP32S2
// Enable Touch wakeup
if (s_config.wakeup_triggers & RTC_TOUCH_TRIG_EN) {
touch_wakeup_prepare();
}
#endif
uint32_t reject_triggers = 0;
if ((pd_flags & RTC_SLEEP_PD_DIG) == 0 && (s_config.wakeup_triggers & RTC_GPIO_TRIG_EN)) {
/* Light sleep, enable sleep reject for faster return from this function,
* in case the wakeup is already triggerred.
*/
#if CONFIG_IDF_TARGET_ESP32
reject_triggers = RTC_CNTL_LIGHT_SLP_REJECT_EN_M | RTC_CNTL_GPIO_REJECT_EN_M;
#elif CONFIG_IDF_TARGET_ESP32S2
reject_triggers = s_config.wakeup_triggers;
#endif
}
// Enter sleep
@ -220,7 +292,12 @@ static uint32_t IRAM_ATTR esp_sleep_start(uint32_t pd_flags)
s_config.sleep_duration > 0) {
timer_wakeup_prepare();
}
#ifdef CONFIG_IDF_TARGET_ESP32
uint32_t result = rtc_sleep_start(s_config.wakeup_triggers, reject_triggers);
#elif CONFIG_IDF_TARGET_ESP32S2
uint32_t result = rtc_sleep_start(s_config.wakeup_triggers, reject_triggers, 1);
#endif
// Restore CPU frequency
rtc_clk_cpu_freq_set_config(&cpu_freq_config);
@ -248,7 +325,11 @@ void IRAM_ATTR esp_deep_sleep_start(void)
s_config.sleep_time_adjustment = DEEP_SLEEP_TIME_OVERHEAD_US;
// Enter sleep
#ifdef CONFIG_IDF_TARGET_ESP32
esp_sleep_start(RTC_SLEEP_PD_DIG | RTC_SLEEP_PD_VDDSDIO | RTC_SLEEP_PD_XTAL | pd_flags);
#elif CONFIG_IDF_TARGET_ESP32S2
esp_sleep_start(RTC_SLEEP_PD_DIG | RTC_SLEEP_PD_VDDSDIO | pd_flags);
#endif
// Because RTC is in a slower clock domain than the CPU, it
// can take several CPU cycles for the sleep mode to start.
@ -308,8 +389,7 @@ esp_err_t esp_light_sleep_start(void)
// Decide if VDD_SDIO needs to be powered down;
// If it needs to be powered down, adjust sleep time.
const uint32_t flash_enable_time_us = VDD_SDIO_POWERUP_TO_FLASH_READ_US
+ CONFIG_ESP32_DEEP_SLEEP_WAKEUP_DELAY;
const uint32_t flash_enable_time_us = VDD_SDIO_POWERUP_TO_FLASH_READ_US + DEEP_SLEEP_WAKEUP_DELAY;
#ifndef CONFIG_SPIRAM
const uint32_t vddsdio_pd_sleep_duration = MAX(FLASH_PD_MIN_SLEEP_TIME_US,
@ -395,7 +475,7 @@ esp_err_t esp_sleep_disable_wakeup_source(esp_sleep_source_t source)
} else if (CHECK_SOURCE(source, ESP_SLEEP_WAKEUP_UART, (RTC_UART0_TRIG_EN | RTC_UART1_TRIG_EN))) {
s_config.wakeup_triggers &= ~(RTC_UART0_TRIG_EN | RTC_UART1_TRIG_EN);
}
#ifdef CONFIG_ESP32_ULP_COPROC_ENABLED
#if defined(CONFIG_ESP32_ULP_COPROC_ENABLED) || defined(CONFIG_ESP32S2_ULP_COPROC_ENABLED)
else if (CHECK_SOURCE(source, ESP_SLEEP_WAKEUP_ULP, RTC_ULP_TRIG_EN)) {
s_config.wakeup_triggers &= ~RTC_ULP_TRIG_EN;
}
@ -409,9 +489,10 @@ esp_err_t esp_sleep_disable_wakeup_source(esp_sleep_source_t source)
esp_err_t esp_sleep_enable_ulp_wakeup(void)
{
#ifdef CONFIG_IDF_TARGET_ESP32
#ifdef CONFIG_ESP32_RTC_EXT_CRYST_ADDIT_CURRENT
return ESP_ERR_NOT_SUPPORTED;
#endif
#endif // CONFIG_ESP32_RTC_EXT_CRYST_ADDIT_CURRENT
#ifdef CONFIG_ESP32_ULP_COPROC_ENABLED
if(s_config.wakeup_triggers & RTC_EXT0_TRIG_EN) {
ESP_LOGE(TAG, "Conflicting wake-up trigger: ext0");
@ -419,8 +500,11 @@ esp_err_t esp_sleep_enable_ulp_wakeup(void)
}
s_config.wakeup_triggers |= RTC_ULP_TRIG_EN;
return ESP_OK;
#else
#else // CONFIG_ESP32_ULP_COPROC_ENABLED
return ESP_ERR_INVALID_STATE;
#endif // CONFIG_ESP32_ULP_COPROC_ENABLED
#elif CONFIG_IDF_TARGET_ESP32S2
return ESP_ERR_NOT_SUPPORTED;
#endif
}
@ -441,8 +525,27 @@ static void timer_wakeup_prepare(void)
int64_t rtc_count_delta = rtc_time_us_to_slowclk(sleep_duration, period);
rtc_sleep_set_wakeup_time(s_config.rtc_ticks_at_sleep_start + rtc_count_delta);
#ifdef CONFIG_IDF_TARGET_ESP32S2
SET_PERI_REG_MASK(RTC_CNTL_INT_CLR_REG, RTC_CNTL_MAIN_TIMER_INT_CLR_M);
SET_PERI_REG_MASK(RTC_CNTL_SLP_TIMER1_REG, RTC_CNTL_MAIN_TIMER_ALARM_EN_M);
#endif
}
#ifdef CONFIG_IDF_TARGET_ESP32S2
/* In deep sleep mode, only the sleep channel is supported, and other touch channels should be turned off. */
static void touch_wakeup_prepare(void)
{
touch_pad_sleep_channel_t slp_config;
touch_pad_fsm_stop();
touch_pad_clear_channel_mask(SOC_TOUCH_SENSOR_BIT_MASK_MAX);
touch_pad_sleep_channel_get_info(&slp_config);
touch_pad_set_channel_mask(BIT(slp_config.touch_num));
touch_pad_fsm_start();
}
#endif
esp_err_t esp_sleep_enable_touchpad_wakeup(void)
{
#ifdef CONFIG_ESP32_RTC_EXT_CRYST_ADDIT_CURRENT
@ -462,7 +565,7 @@ touch_pad_t esp_sleep_get_touchpad_wakeup_status(void)
return TOUCH_PAD_MAX;
}
touch_pad_t pad_num;
esp_err_t ret = touch_pad_get_wakeup_status(&pad_num);
esp_err_t ret = touch_pad_get_wakeup_status(&pad_num); //TODO 723diff commit id:fda9ada1b
assert(ret == ESP_OK && "wakeup reason is RTC_TOUCH_TRIG_EN but SENS_TOUCH_MEAS_EN is zero");
return pad_num;
}
@ -545,7 +648,11 @@ static void ext1_wakeup_prepare(void)
// Pullups/pulldowns also need to be disabled.
REG_CLR_BIT(desc->reg, desc->pulldown);
REG_CLR_BIT(desc->reg, desc->pullup);
#ifdef CONFIG_IDF_TARGET_ESP32
REG_SET_BIT(RTC_CNTL_HOLD_FORCE_REG, desc->hold_force);
#elif CONFIG_IDF_TARGET_ESP32S2
REG_SET_BIT(RTC_CNTL_PAD_HOLD_REG, desc->hold_force);
#endif
}
// Keep track of pins which are processed to bail out early
rtc_gpio_mask &= ~BIT(rtc_pin);
@ -603,13 +710,29 @@ esp_err_t esp_sleep_enable_uart_wakeup(int uart_num)
return ESP_OK;
}
esp_err_t esp_sleep_enable_wifi_wakeup(void)
{
#if CONFIG_IDF_TARGET_ESP32
return ESP_ERR_NOT_SUPPORTED;
#elif CONFIG_IDF_TARGET_ESP32S2
s_config.wakeup_triggers |= RTC_WIFI_TRIG_EN;
return ESP_OK;
#endif
}
esp_sleep_wakeup_cause_t esp_sleep_get_wakeup_cause(void)
{
if (rtc_get_reset_reason(0) != DEEPSLEEP_RESET && !s_light_sleep_wakeup) {
return ESP_SLEEP_WAKEUP_UNDEFINED;
}
#ifdef CONFIG_IDF_TARGET_ESP32
uint32_t wakeup_cause = REG_GET_FIELD(RTC_CNTL_WAKEUP_STATE_REG, RTC_CNTL_WAKEUP_CAUSE);
#elif CONFIG_IDF_TARGET_ESP32S2
uint32_t wakeup_cause = REG_GET_FIELD(RTC_CNTL_SLP_WAKEUP_CAUSE_REG, RTC_CNTL_WAKEUP_CAUSE);
#endif
if (wakeup_cause & RTC_EXT0_TRIG_EN) {
return ESP_SLEEP_WAKEUP_EXT0;
} else if (wakeup_cause & RTC_EXT1_TRIG_EN) {
@ -624,6 +747,14 @@ esp_sleep_wakeup_cause_t esp_sleep_get_wakeup_cause(void)
return ESP_SLEEP_WAKEUP_GPIO;
} else if (wakeup_cause & (RTC_UART0_TRIG_EN | RTC_UART1_TRIG_EN)) {
return ESP_SLEEP_WAKEUP_UART;
#if CONFIG_IDF_TARGET_ESP32S2
} else if (wakeup_cause & RTC_WIFI_TRIG_EN) {
return ESP_SLEEP_WAKEUP_WIFI;
} else if (wakeup_cause & RTC_COCPU_TRIG_EN) {
return ESP_SLEEP_WAKEUP_ULP;
} else if (wakeup_cause & RTC_COCPU_TRAP_TRIG_EN) {
return ESP_SLEEP_WAKEUP_COCPU_TRAP_TRIG;
#endif
} else {
return ESP_SLEEP_WAKEUP_UNDEFINED;
}
@ -648,7 +779,7 @@ static uint32_t get_power_down_flags(void)
// If there is any data placed into .rtc.data or .rtc.bss segments, and
// RTC_SLOW_MEM is Auto, keep it powered up as well.
// Labels are defined in the linker script, see esp32.ld.
// Labels are defined in the linker script
extern int _rtc_slow_length;
if ((s_config.pd_options[ESP_PD_DOMAIN_RTC_SLOW_MEM] == ESP_PD_OPTION_AUTO) &&
@ -699,6 +830,8 @@ static uint32_t get_power_down_flags(void)
if (s_config.pd_options[ESP_PD_DOMAIN_RTC_PERIPH] != ESP_PD_OPTION_ON) {
pd_flags |= RTC_SLEEP_PD_RTC_PERIPH;
}
#ifdef CONFIG_IDF_TARGET_ESP32
if (s_config.pd_options[ESP_PD_DOMAIN_XTAL] != ESP_PD_OPTION_ON) {
pd_flags |= RTC_SLEEP_PD_XTAL;
}
@ -709,6 +842,8 @@ static uint32_t get_power_down_flags(void)
pd_flags &= ~RTC_SLEEP_PD_RTC_PERIPH;
#endif
}
#endif
return pd_flags;
}

2
docs/Doxyfile
View File

@ -245,7 +245,7 @@ INPUT = \
## ESP HTTPS OTA
$(IDF_PATH)/components/esp_https_ota/include/esp_https_ota.h \
## Sleep
$(IDF_PATH)/components/$(IDF_TARGET)/include/esp_sleep.h \
$(IDF_PATH)/components/esp_system/include/esp_sleep.h \
## Logging
$(IDF_PATH)/components/log/include/esp_log.h \
## Base MAC address

1
examples/system/light_sleep/main/light_sleep_example_main.c
View File

@ -17,6 +17,7 @@
#include "esp_sleep.h"
#include "esp_log.h"
#include "driver/uart.h"
#include "driver/gpio.h"
/* Most development boards have "boot" button attached to GPIO0.
* You can also change this to another pin.