We have a new project using QN9021. We bought QN9020 miniDK as initial step. We successfully test the RF of QN9020 miniDK using this suggestion by one of your engineers "To perform RF PHY tests for the QN9020, you can use the "controller.bin" file in the QN9020's SDK. This binary will set the device in UART HCI at 9600, N, 8, 1."
But not the QN9021. Can you advice us on our problem?