keep variable after restart

mvadu!
Posts: 1
Joined: Mon Nov 26, 2018 2:06 am

Re: keep variable after restart

Postby mvadu! » Mon Nov 26, 2018 2:08 am

Is this bug been fixed? Or should we still be using another dummy RTC_DATA_ATTR variable just to keep the memory powered up?

ESP_igrr
Posts: 2067
Joined: Tue Dec 01, 2015 8:37 am

Re: keep variable after restart

Postby ESP_igrr » Mon Nov 26, 2018 3:31 am

Yes, has been fixed in https://github.com/espressif/esp-idf/co ... 158dbf6b4b for master and release/v3.2, and in https://github.com/espressif/esp-idf/co ... 7143985edc for release/v3.1.

j4e8a16n
Posts: 9
Joined: Mon Nov 18, 2019 5:55 pm

Re: keep variable after restart

Postby j4e8a16n » Tue Jul 07, 2020 2:36 pm

Hi,


RTC_NOINIT_ATTR int waitFlag = 0;

Serial.println((String)waitFlag);

Why do I get this?
1881730620


Regards

JPD
Arduino 1.8.10; Windows 10; ESP32 VROOM

ESP_Sprite
Posts: 8921
Joined: Thu Nov 26, 2015 4:08 am

Re: keep variable after restart

Postby ESP_Sprite » Tue Jul 07, 2020 6:18 pm

...because you tell the compiler not to initialize the variable, and that seemingly takes precedence over the fact that you tell it to initialize the variable.

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