Search found 5 matches

by dacitt
Mon May 27, 2019 10:49 am
Forum: Sample Code
Topic: ULP uart send/receive
Replies: 2
Views: 917

ULP uart send/receive

Hi all,
are there any examples about using UART in ULP mode? I need to send/receive simple packets during light sleep. Is it possible?

Thanks!!
by dacitt
Wed Jan 09, 2019 1:40 pm
Forum: General Discussion
Topic: Watchdog triggered after light sleep wake up
Replies: 5
Views: 1160

Re: Watchdog triggered after light sleep wake up

Yes you are right, this task is continuously executed and main app is never called -> no call to light sleep.
Are esp timer freezed during light sleep? This short period of timer could be responsible of the trigger of watchdog after sleep?

Thanks
by dacitt
Wed Jan 09, 2019 7:17 am
Forum: General Discussion
Topic: Watchdog triggered after light sleep wake up
Replies: 5
Views: 1160

Re: Watchdog triggered after light sleep wake up

I will provide complete code soon. Just a question to be sure: is it normal that esp_timer callback tasks are running also during light_sleep mode? If i put a esp_logi inside the function task I can see log during sleep. For example, one task is initialized in this way: esp_timer_create_args_t x_arg...
by dacitt
Tue Jan 08, 2019 5:01 pm
Forum: General Discussion
Topic: Watchdog triggered after light sleep wake up
Replies: 5
Views: 1160

Watchdog triggered after light sleep wake up

Hi all, in my esp32 freertos project I put the chip in light sleep, during witch ULP is active and check if a ADC value is over certain treshold. Wake up works well, but if sleep last more than 2-3 minutes nothing happens and watchdog is triggered on esp_timer (no problem if sleep is less than 2 min...
by dacitt
Thu Dec 20, 2018 5:03 pm
Forum: ESP32 IDF
Topic: ULP ADC undefined reference to _binary_ulp_main_bin_start
Replies: 1
Views: 458

ULP ADC undefined reference to _binary_ulp_main_bin_start

Hi all, i'm trying to add to my iot project the ultra low power coprocessor but it doesn't compile. This is my component.mk file: ULP_APP_NAME ?= ulp_KnobMonitor ULP_S_SOURCES = $(addprefix $(COMPONENT_PATH)/ULP/, \ KnobMonitor.S \ ) ULP_EXP_DEP_OBJECTS = ULP_KnobMonitor.o include $(IDF_PATH)/compon...

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