Help!The output is strange.

ysw0145
Posts: 3
Joined: Sat Aug 13, 2016 9:28 am

Help!The output is strange.

Postby ysw0145 » Fri Dec 08, 2017 4:03 pm

All the examples in esp-idf examples folder can not run.(In fact,I have tried many of them....).
Emmm,
Image

ESP_Sprite
Posts: 9051
Joined: Thu Nov 26, 2015 4:08 am

Re: Help!The output is strange.

Postby ESP_Sprite » Sat Dec 09, 2017 3:56 am

Are you sure your power supply (or USB lead, in case of a devboard) is good enough? Stuff like this tends to happen when the current draw of the ESP32 makes the input voltage sag too much.

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

Re: Help!The output is strange.

Postby ESP_igrr » Sat Dec 09, 2017 5:32 am

Please check the note about XTAL frequency in the following document:
http://esp-idf.readthedocs.io/en/latest ... #configure
Most ESP32 development boards have a 40MHz crystal installed. However, some boards use a 26MHz crystal. If your board uses a 26MHz crystal, or you get garbage output from serial port after code upload, adjust the ESP32_XTAL_FREQ_SEL option in menuconfig.

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