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samples: boards: espressif: add deep sleep counter

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Includes a RTC attribute as counter value to demonstrate
data being kept in memory after deep sleep reset.

This is only valid when MCUboot is enabled.

Signed-off-by: Sylvio Alves <sylvio.alves@espressif.com>
This commit is contained in:
Sylvio Alves 2025-01-07 11:50:34 -03:00 committed by Benjamin Cabé
parent 5d05e28fce
commit c4fd9eac4c
1 changed files with 10 additions and 1 deletions
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11
samples/boards/espressif/deep_sleep/src/main.c
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@ -9,7 +9,9 @@
#include <esp_sleep.h> #include <esp_sleep.h>
#include <driver/rtc_io.h> #include <driver/rtc_io.h>
#define WAKEUP_TIME_SEC (20) #include <esp_attr.h>
#define WAKEUP_TIME_SEC (5)
#ifdef CONFIG_EXAMPLE_EXT1_WAKEUP #ifdef CONFIG_EXAMPLE_EXT1_WAKEUP
#define EXT_WAKEUP_PIN_1 (2) #define EXT_WAKEUP_PIN_1 (2)
@ -24,8 +26,15 @@ static const struct gpio_dt_spec wakeup_button = GPIO_DT_SPEC_GET(DT_ALIAS(wakeu
#endif #endif
#endif #endif
/* keep data in RTC memory after deep-sleep */
RTC_DATA_ATTR int s_rtc_data = 0;
int main(void) int main(void)
{ {
#ifdef CONFIG_BOOTLOADER_MCUBOOT
printk("ESP32 deep sleep example, current counter is %d\r\n", s_rtc_data++);
#endif
switch (esp_sleep_get_wakeup_cause()) { switch (esp_sleep_get_wakeup_cause()) {
#ifdef CONFIG_EXAMPLE_EXT1_WAKEUP #ifdef CONFIG_EXAMPLE_EXT1_WAKEUP
case ESP_SLEEP_WAKEUP_EXT1: case ESP_SLEEP_WAKEUP_EXT1: