Esp entering boot mode

yogeshwaran774
Posts: 1
Joined: Tue Sep 24, 2019 5:07 pm

Esp entering boot mode

Postby yogeshwaran774 » Tue Sep 24, 2019 5:15 pm

  1. In my project i am using esp32, it is flashing properly and working fine but sometimes if i switch off and turn it on it is going to boot mode and it is not coming from that even if i switch off and switch on again. if i leave for sometime then switch it on then working properly and in my design enable is pulled up, gpio 0 is not connected to anything and 10uf electrolytic capacitor near to esp32.
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  3. Can some one help to find out how it is going into boot mode randomly?

ESP_Dazz
Posts: 143
Joined: Fri Jun 02, 2017 6:50 am

Re: Esp entering boot mode

Postby ESP_Dazz » Tue Oct 08, 2019 8:21 am

GPIO0 should be internally pulled up, so leaving the PIN floating usually isn't an issue. However, keep in mind the internal pull-ups are quite weak (45 K Ohms). Is GPIO0 left completely floating or is it connected to something else (e.g. PCB trace)? Does the issue still persist if you externally apply a stronger pull-up to GPIO0?

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