Hi I have integrated PN7120 Linux driver and HAL base on AN11690. I run the NXP test apk. It is able scan and discovered the NFC credit card. However, every once awhile, I'm getting the following errors from the driver. "pn54x_dev_write : i2c_master_send returned -5. When I probe i2c bus with scope, it seems that sometimes, it is response ACK on i2c write access.