I just bought a Rpi3 and a Kuman 3.5" screen to make a minimal computer. I also have a PN532 to do NFC.

My configuration:
- Kuman 3.5 screen is connected to SPI0.0, touchscreen to SPI0.1;
- I need on-board Bluetooth for my PS3 keyboard, I paid for it :)

The problems with Electrohouse V2.0 PN532 are:
- The chip won't works with SPI1.0 (error libnfc.driver.pn532_spi Unable to wait for SPI data. (RX));
- UART is used by Bluetooth;
- And I want to keep i2c for something else.

How can I do?

1 Answer 1


After two days of reading and testing I found how to do it.

Three lines are needed to the /boot/config.txt to make it works.

#Switch Bluetooth from UART0 to UART1.
#UART1 clock is derived from system clock, so we need to fix core clock to avoid changing baudrate on bluetooth.
#Set UART0 clock to normal as Rpi3 normally boot at 400Mhz (now 250Mhz) UART0 clock would biased else.

So let sum up:
- On-board Bluetooth works flawlessly with my PS3 BT Keyboard;
- Screen and touchscreen still works, hopefully;
- PN532 works like a charm using UART0 (Pin 8 & 10)


Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.