After the PN7160 RF on, there are a large number of clutter signals in the IRQ and IIC

[ethan_dang1]

I'm testing with IMX6ULL+PN7160_EVK.

At first, the initialization and parameter configuration are normal, But when I send the RF_DISCOVER_CMD to PN7160, there is a lot of clutter on the IRQ pin, and there are some on the IIC pin as well. It is also not possible to check the card properly. When the VBAT_5V is removed, the clutter signal disappears.

I've tried using an external power supply to power VBAT and VDD_UP, but the phenomenon is the same.

Please help check.

[KellyLi]

Hello @ethan_dang1 

Could you share the following information:

1) How to connect PN7160 and IMX6ULL?

2) Please provide demsg log

3) Please provide .dts file

BR

kelly

[ethan_dang1]

Hi Kelly,

Uploaded to attachments. Thanks!

[KellyLi]

Hello @ethan_dang1 

Could you switch to I2C2? Some sensors mounted on I2C1 may cause interference.

BR

kelly