Can the STWLC38 communicate custom data if used on the receiver and transmitter side?

[grismore]

I am looking at using this chip in a wireless power system, but I need to be able to send and recieve data. I see that this chip has registers for DTS, but I want to make sure that I can write data to the chip using my MCU as an I2C master, and that it will transmit it over the powering field to the other chip, where it can be read by an MCU on that side using I2C.

[Foued_KH]

Hello @grismore , 

Yes for I2C communication, you can use the STWLC38 as I2C Slave and your MCU as Master, then you can manage your project.

Foued

[grismore]

Am I able to transmit this data over the wireless power field?

[OlivierZign]

I would also really like to know this, is it possible to transmit (bi-directional) user data over the wireless power field?

[willzhou]

STWLC38 (RX) and STWBC86 (TX) supports Qi communication means the sending of custom data.
The customer may set the register (by GUI or Host MCU from RX) to send the custom data from RX to TX and on TX side read the custom data back (TX response - host MCU only) .

Please refer to ST website for document.

Also there is example code here

https://github.com/STwirelesscharger/Python_FT260_ST_WLC/blob/main/a4_wlc38_send_recv_pp_packet.py