mirror of
https://github.com/espressif/esp-idf.git
synced 2024-10-05 20:47:46 -04:00
252 lines
9.4 KiB
C
252 lines
9.4 KiB
C
/* Deep sleep wake up example
|
|
|
|
This example code is in the Public Domain (or CC0 licensed, at your option.)
|
|
|
|
Unless required by applicable law or agreed to in writing, this
|
|
software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
|
|
CONDITIONS OF ANY KIND, either express or implied.
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <stdlib.h>
|
|
#include <time.h>
|
|
#include <sys/time.h>
|
|
#include "sdkconfig.h"
|
|
#include "soc/soc_caps.h"
|
|
#include "freertos/FreeRTOS.h"
|
|
#include "freertos/task.h"
|
|
#include "esp_sleep.h"
|
|
#include "esp_log.h"
|
|
#include "driver/rtc_io.h"
|
|
#include "soc/rtc.h"
|
|
|
|
#if SOC_TOUCH_SENSOR_SUPPORTED
|
|
#include "soc/sens_periph.h"
|
|
#include "driver/touch_pad.h"
|
|
#endif
|
|
|
|
#if SOC_GPIO_SUPPORT_DEEPSLEEP_WAKEUP
|
|
#define DEFAULT_WAKEUP_PIN CONFIG_EXAMPLE_GPIO_WAKEUP_PIN
|
|
#ifdef CONFIG_EXAMPLE_GPIO_WAKEUP_HIGH_LEVEL
|
|
#define DEFAULT_WAKEUP_LEVEL ESP_GPIO_WAKEUP_GPIO_HIGH
|
|
#else
|
|
#define DEFAULT_WAKEUP_LEVEL ESP_GPIO_WAKEUP_GPIO_LOW
|
|
#endif
|
|
#endif
|
|
|
|
static RTC_DATA_ATTR struct timeval sleep_enter_time;
|
|
|
|
#ifdef CONFIG_EXAMPLE_TOUCH_WAKEUP
|
|
#if CONFIG_IDF_TARGET_ESP32
|
|
#define TOUCH_THRESH_NO_USE 0
|
|
static void calibrate_touch_pad(touch_pad_t pad);
|
|
#endif
|
|
#endif
|
|
|
|
void app_main(void)
|
|
{
|
|
struct timeval now;
|
|
gettimeofday(&now, NULL);
|
|
int sleep_time_ms = (now.tv_sec - sleep_enter_time.tv_sec) * 1000 + (now.tv_usec - sleep_enter_time.tv_usec) / 1000;
|
|
|
|
switch (esp_sleep_get_wakeup_cause()) {
|
|
#if CONFIG_EXAMPLE_EXT0_WAKEUP
|
|
case ESP_SLEEP_WAKEUP_EXT0: {
|
|
printf("Wake up from ext0\n");
|
|
break;
|
|
}
|
|
#endif // CONFIG_EXAMPLE_EXT0_WAKEUP
|
|
#ifdef CONFIG_EXAMPLE_EXT1_WAKEUP
|
|
case ESP_SLEEP_WAKEUP_EXT1: {
|
|
uint64_t wakeup_pin_mask = esp_sleep_get_ext1_wakeup_status();
|
|
if (wakeup_pin_mask != 0) {
|
|
int pin = __builtin_ffsll(wakeup_pin_mask) - 1;
|
|
printf("Wake up from GPIO %d\n", pin);
|
|
} else {
|
|
printf("Wake up from GPIO\n");
|
|
}
|
|
break;
|
|
}
|
|
#endif // CONFIG_EXAMPLE_EXT1_WAKEUP
|
|
#if SOC_GPIO_SUPPORT_DEEPSLEEP_WAKEUP
|
|
case ESP_SLEEP_WAKEUP_GPIO: {
|
|
uint64_t wakeup_pin_mask = esp_sleep_get_gpio_wakeup_status();
|
|
if (wakeup_pin_mask != 0) {
|
|
int pin = __builtin_ffsll(wakeup_pin_mask) - 1;
|
|
printf("Wake up from GPIO %d\n", pin);
|
|
} else {
|
|
printf("Wake up from GPIO\n");
|
|
}
|
|
break;
|
|
}
|
|
#endif //SOC_GPIO_SUPPORT_DEEPSLEEP_WAKEUP
|
|
case ESP_SLEEP_WAKEUP_TIMER: {
|
|
printf("Wake up from timer. Time spent in deep sleep: %dms\n", sleep_time_ms);
|
|
break;
|
|
}
|
|
#ifdef CONFIG_EXAMPLE_TOUCH_WAKEUP
|
|
case ESP_SLEEP_WAKEUP_TOUCHPAD: {
|
|
printf("Wake up from touch on pad %d\n", esp_sleep_get_touchpad_wakeup_status());
|
|
break;
|
|
}
|
|
#endif // CONFIG_EXAMPLE_TOUCH_WAKEUP
|
|
|
|
case ESP_SLEEP_WAKEUP_UNDEFINED:
|
|
default:
|
|
printf("Not a deep sleep reset\n");
|
|
}
|
|
|
|
vTaskDelay(1000 / portTICK_PERIOD_MS);
|
|
|
|
const int wakeup_time_sec = 20;
|
|
printf("Enabling timer wakeup, %ds\n", wakeup_time_sec);
|
|
esp_sleep_enable_timer_wakeup(wakeup_time_sec * 1000000);
|
|
|
|
#if CONFIG_EXAMPLE_EXT0_WAKEUP
|
|
const int ext_wakeup_pin_0 = 3;
|
|
|
|
printf("Enabling EXT0 wakeup on pin GPIO%d\n", ext_wakeup_pin_0);
|
|
esp_sleep_enable_ext0_wakeup(ext_wakeup_pin_0, 1);
|
|
|
|
// Configure pullup/downs via RTCIO to tie wakeup pins to inactive level during deepsleep.
|
|
// EXT0 resides in the same power domain (RTC_PERIPH) as the RTC IO pullup/downs.
|
|
// No need to keep that power domain explicitly, unlike EXT1.
|
|
rtc_gpio_pullup_dis(ext_wakeup_pin_0);
|
|
rtc_gpio_pulldown_en(ext_wakeup_pin_0);
|
|
#endif // CONFIG_EXAMPLE_EXT0_WAKEUP
|
|
#ifdef CONFIG_EXAMPLE_EXT1_WAKEUP
|
|
const int ext_wakeup_pin_1 = 2;
|
|
const uint64_t ext_wakeup_pin_1_mask = 1ULL << ext_wakeup_pin_1;
|
|
const int ext_wakeup_pin_2 = 4;
|
|
const uint64_t ext_wakeup_pin_2_mask = 1ULL << ext_wakeup_pin_2;
|
|
|
|
printf("Enabling EXT1 wakeup on pins GPIO%d, GPIO%d\n", ext_wakeup_pin_1, ext_wakeup_pin_2);
|
|
esp_sleep_enable_ext1_wakeup(ext_wakeup_pin_1_mask | ext_wakeup_pin_2_mask, ESP_EXT1_WAKEUP_ANY_HIGH);
|
|
|
|
/* If there are no external pull-up/downs, tie wakeup pins to inactive level with internal pull-up/downs via RTC IO
|
|
* during deepsleep. However, RTC IO relies on the RTC_PERIPH power domain. Keeping this power domain on will
|
|
* increase some power comsumption. */
|
|
# if CONFIG_EXAMPLE_EXT1_USE_INTERNAL_PULLUPS
|
|
esp_sleep_pd_config(ESP_PD_DOMAIN_RTC_PERIPH, ESP_PD_OPTION_ON);
|
|
rtc_gpio_pullup_dis(ext_wakeup_pin_1);
|
|
rtc_gpio_pulldown_en(ext_wakeup_pin_1);
|
|
rtc_gpio_pullup_dis(ext_wakeup_pin_2);
|
|
rtc_gpio_pulldown_en(ext_wakeup_pin_2);
|
|
# endif //CONFIG_EXAMPLE_EXT1_USE_INTERNAL_PULLUPS
|
|
#endif // CONFIG_EXAMPLE_EXT1_WAKEUP
|
|
|
|
#ifdef CONFIG_EXAMPLE_GPIO_WAKEUP
|
|
const gpio_config_t config = {
|
|
.pin_bit_mask = BIT(DEFAULT_WAKEUP_PIN),
|
|
.mode = GPIO_MODE_INPUT,
|
|
};
|
|
ESP_ERROR_CHECK(gpio_config(&config));
|
|
ESP_ERROR_CHECK(esp_deep_sleep_enable_gpio_wakeup(BIT(DEFAULT_WAKEUP_PIN), DEFAULT_WAKEUP_LEVEL));
|
|
printf("Enabling GPIO wakeup on pins GPIO%d\n", DEFAULT_WAKEUP_PIN);
|
|
#endif
|
|
|
|
#ifdef CONFIG_EXAMPLE_TOUCH_WAKEUP
|
|
#if CONFIG_IDF_TARGET_ESP32
|
|
// Initialize touch pad peripheral.
|
|
// The default fsm mode is software trigger mode.
|
|
ESP_ERROR_CHECK(touch_pad_init());
|
|
// If use touch pad wake up, should set touch sensor FSM mode at 'TOUCH_FSM_MODE_TIMER'.
|
|
touch_pad_set_fsm_mode(TOUCH_FSM_MODE_TIMER);
|
|
// Set reference voltage for charging/discharging
|
|
// In this case, the high reference valtage will be 2.4V - 1V = 1.4V
|
|
// The low reference voltage will be 0.5
|
|
// The larger the range, the larger the pulse count value.
|
|
touch_pad_set_voltage(TOUCH_HVOLT_2V4, TOUCH_LVOLT_0V5, TOUCH_HVOLT_ATTEN_1V);
|
|
//init RTC IO and mode for touch pad.
|
|
touch_pad_config(TOUCH_PAD_NUM8, TOUCH_THRESH_NO_USE);
|
|
touch_pad_config(TOUCH_PAD_NUM9, TOUCH_THRESH_NO_USE);
|
|
calibrate_touch_pad(TOUCH_PAD_NUM8);
|
|
calibrate_touch_pad(TOUCH_PAD_NUM9);
|
|
#elif CONFIG_IDF_TARGET_ESP32S2 || CONFIG_IDF_TARGET_ESP32S3
|
|
/* Initialize touch pad peripheral. */
|
|
touch_pad_init();
|
|
/* Only support one touch channel in sleep mode. */
|
|
touch_pad_config(TOUCH_PAD_NUM9);
|
|
/* Denoise setting at TouchSensor 0. */
|
|
touch_pad_denoise_t denoise = {
|
|
/* The bits to be cancelled are determined according to the noise level. */
|
|
.grade = TOUCH_PAD_DENOISE_BIT4,
|
|
.cap_level = TOUCH_PAD_DENOISE_CAP_L4,
|
|
};
|
|
touch_pad_denoise_set_config(&denoise);
|
|
touch_pad_denoise_enable();
|
|
printf("Denoise function init\n");
|
|
/* Filter setting */
|
|
touch_filter_config_t filter_info = {
|
|
.mode = TOUCH_PAD_FILTER_IIR_16,
|
|
.debounce_cnt = 1, // 1 time count.
|
|
.noise_thr = 0, // 50%
|
|
.jitter_step = 4, // use for jitter mode.
|
|
.smh_lvl = TOUCH_PAD_SMOOTH_IIR_2,
|
|
};
|
|
touch_pad_filter_set_config(&filter_info);
|
|
touch_pad_filter_enable();
|
|
printf("touch pad filter init %d\n", TOUCH_PAD_FILTER_IIR_8);
|
|
/* Set sleep touch pad. */
|
|
touch_pad_sleep_channel_enable(TOUCH_PAD_NUM9, true);
|
|
touch_pad_sleep_channel_enable_proximity(TOUCH_PAD_NUM9, false);
|
|
/* Reducing the operating frequency can effectively reduce power consumption. */
|
|
touch_pad_sleep_channel_set_work_time(1000, TOUCH_PAD_MEASURE_CYCLE_DEFAULT);
|
|
/* Enable touch sensor clock. Work mode is "timer trigger". */
|
|
touch_pad_set_fsm_mode(TOUCH_FSM_MODE_TIMER);
|
|
touch_pad_fsm_start();
|
|
vTaskDelay(100 / portTICK_PERIOD_MS);
|
|
|
|
/* set touchpad wakeup threshold */
|
|
uint32_t touch_value, wake_threshold;
|
|
touch_pad_sleep_channel_read_smooth(TOUCH_PAD_NUM9, &touch_value);
|
|
wake_threshold = touch_value * 0.1; // wakeup when touch sensor crosses 10% of background level
|
|
touch_pad_sleep_set_threshold(TOUCH_PAD_NUM9, wake_threshold);
|
|
printf("Touch pad #%d average: %d, wakeup threshold set to %d\n",
|
|
TOUCH_PAD_NUM9, touch_value, (uint32_t)(touch_value * 0.1));
|
|
#endif
|
|
printf("Enabling touch pad wakeup\n");
|
|
esp_sleep_enable_touchpad_wakeup();
|
|
esp_sleep_pd_config(ESP_PD_DOMAIN_RTC_PERIPH, ESP_PD_OPTION_ON);
|
|
#endif // CONFIG_EXAMPLE_TOUCH_WAKEUP
|
|
|
|
#if CONFIG_IDF_TARGET_ESP32
|
|
// Isolate GPIO12 pin from external circuits. This is needed for modules
|
|
// which have an external pull-up resistor on GPIO12 (such as ESP32-WROVER)
|
|
// to minimize current consumption.
|
|
rtc_gpio_isolate(GPIO_NUM_12);
|
|
#endif
|
|
|
|
printf("Entering deep sleep\n");
|
|
gettimeofday(&sleep_enter_time, NULL);
|
|
|
|
esp_deep_sleep_start();
|
|
}
|
|
|
|
#ifdef CONFIG_EXAMPLE_TOUCH_WAKEUP
|
|
#if CONFIG_IDF_TARGET_ESP32
|
|
static void calibrate_touch_pad(touch_pad_t pad)
|
|
{
|
|
int avg = 0;
|
|
const size_t calibration_count = 128;
|
|
for (int i = 0; i < calibration_count; ++i) {
|
|
uint16_t val;
|
|
touch_pad_read(pad, &val);
|
|
avg += val;
|
|
}
|
|
avg /= calibration_count;
|
|
const int min_reading = 300;
|
|
if (avg < min_reading) {
|
|
printf("Touch pad #%d average reading is too low: %d (expecting at least %d). "
|
|
"Not using for deep sleep wakeup.\n", pad, avg, min_reading);
|
|
touch_pad_config(pad, 0);
|
|
} else {
|
|
int threshold = avg - 100;
|
|
printf("Touch pad #%d average: %d, wakeup threshold set to %d.\n", pad, avg, threshold);
|
|
touch_pad_config(pad, threshold);
|
|
}
|
|
}
|
|
#endif
|
|
#endif // CONFIG_EXAMPLE_TOUCH_WAKEUP
|