UNO R4 WiFi and Homespan

Using Arduino Project Guidance
1

I am trying to use a UNO R4 to link to HomeKit via Homespan - when I try to run any of the examples I get the message: ERROR: HOMESPAN IS ONLY AVAILABLE FOR ESP32 MICROCONTROLLERS! as well as a missing file error (version.h).
I'm new to Arduino but the UNOR4 spec says it uses ESP32 - I am confused and will be obliged for some guidance to enable my HomeKit project.
thanks

2

The R4 WiFi uses an RA4M1 processor. It has an ESP32 on it, but it is only serving as a serial bridge and a wifi bridge. It has its own firmware. The code goes on the Renesas chip.

You cant use ESP32 code on the R4.

3

Welcome to the forum

The Uno R4 WiFi uses the ESP32 to provide its WiFi and Bluetooth functionality. Its main processor is a Renesas R4M1

See https://docs.arduino.cc/hardware/uno-r4-wifi/

4

Thanks for try explanation - do I need a different Arduino board to achieve HomeKit integration?
cheers

5

The clue is in the error message

So the answer is yes, you do need a different board

6

See HomeSpan hardware list:
(ref: https://docs.arduino.cc/libraries/homespan/ )

Compatibility with an architecture means that code can be compiled and uploaded to a board from the list below:

Samd

Arduino MKR 1000 WiFi
Arduino MKR WiFi 1010
Arduino MKR FOX 1200
Arduino MKR WAN 1300
Arduino MKR WAN 1310
Arduino MKR GSM 1400
Arduino MKR NB 1500
Arduino MKR Vidor 4000
Arduino MKR Zero
Arduino Nano 33 IoT
Arduino Zero

MegaAVR

Arduino Uno WiFi Rev 2
Arduino Nano Every

AVR

Arduino Micro
Arduino Leonardo
Arduino Mega
Arduino Nano
Arduino UNO Arduino Yún

Mbed

Arduino Nano 33 BLE Sense
Arduino Nano 33 BLE
Arduino Nano RP2040 Connect

7

Thanks but, pardon me being a bit slow, which board or boards works with Homespan (for HomeKit)?
thanks

8

See my post list.