B4R is a development tool that I had not heard of before until today, it is from the makers of basic4Android a development tool that I have heard of.
You download the tool from https://www.b4x.com/b4r.html where they explain the requirements which are Arduino 1.8+ must be installed on your development PC, after you install B4R you setup the path to the Arduino IDE and this is so that they can use the Arduino tools that are installed for compiling and programming.
You may have guessed that this is programming in basic rather than C++ but this is not anything to do difficult to get to grips with, there are a number of tutorials and code examples on the website and also guides to help you out.
Here is my configuration
Now connect your ESP32 board and open the board selector and choose the options required, here is my ESP32 board connected
In Tools -> IDE Options -> Configure Process Timeout I changed from 60 seconds to 120 seconds as I was seeing error messages when compiling, takes quite a while for an ESP32 by the looks of it
The most obvious test is the blink led example
Sub Process_Globals Public Serial1 As Serial Private Timer1 As Timer Private pin5 As Pin End Sub Private Sub AppStart Serial1.Initialize(115200) Log("AppStart") pin5.Initialize(5, pin5.MODE_OUTPUT) Timer1.Initialize("Timer1_Tick", 1000) '1000ms = 1 second Timer1.Enabled = True End Sub Private Sub Timer1_Tick Dim currentState As Boolean = pin5.DigitalRead Log("CurrentState: ", currentState) Dim NewState As Boolean = Not(currentState) Log("NewState: ", NewState) pin5.DigitalWrite(NewState) End Sub
Compile and run this and the on board LED should flash on and off
We will bringing more examples using this development tool