I have downloaded PlatformIO and have set it up for ESP32. I loaded hello world and it has compiled and programmed my Sparkfun ESP32-thing board. The LED is flashing but the serial serial monitor shows nothing but junk. I tried to connect Teraterm to find the right board rate, but nothing works. …

The default is a 115200 baud rate but that assumes, as you said, a 40MHz crystal. A 26MHz crystal gives you 26.0 / 40 * 115200 = 74880.0 baud. As @pfeerick has already said, for the Sparkfun ESP32-thing board you need SparkFun ESP32 Thing — PlatformIO latest documentation . It uses this json file. T…

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Printf baud rate?

don.vukovic June 25, 2019, 5:00am 3

The framework is ESP-IDF.
I found another post about this same problem, but the things it mentioned were correct.
Does anyone know where the serial port is setup for standardOut ?