ESP32 deep sleep for 6+ hours

[tuadru]

Im having trouble with my putting my esp32 to sleep for over 1 hour.
For 1 hour it works but when I try for 6 hours it wakes up every 3-4 minutes or so.

Code: Select all

//ABOVE SETUP
#define uS_TO_S_FACTOR 1000000UL  /* Conversion factor for micro seconds to seconds */
#define TIME_TO_SLEEP  21600       /* Time ESP32 will go to sleep (in seconds) */
uint64_t u64SleepLength = TIME_TO_SLEEP * uS_TO_S_FACTOR;/* Time ESP32 will go to sleeps */

//SETUP FUNCTION
esp_sleep_enable_timer_wakeup(u64SleepLength);

//LOOP FUNCTION
esp_deep_sleep_start();

Any suggestion would be greatly appriciated.

[ESP_Sprite]

Potentially an overflow... try 1000000ULL instead of 1000000UL?

[tuadru]

Yeah this was it, I thought if I store it into uint64 it doesn't overflow but I guess it doesn't matter. Thanks.