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CC256XEM-RD: No connection possible with the CC2564C Dual-Mode Bluetooth Controller Evaluation Module

Part Number: CC256XEM-RD
Other Parts Discussed in Thread: CC2564C

Dear Sir or Madam,

I tried to test the Bluetooth module (CC2564C Dual-Mode Bluetooth Controller Evaluation Module) with the microcontroller STM32F407. For the connection I used the TI Dual-mode Bluetooth Stack on STM32F4 MCUs.

As a first step I checked if the USART connection works without the CC2564C Module. This was the case. I read out the USART3_TX and USART_RX (Pins PD8 and PD9 on the microcontroller board) with an oscilloscope. After that I plugged in the CC2564C Module and tried to read der address of the device with the vendor-specific commands (see: There is no reaction of the device though the controller sends the right command.

The whole implementation is orientated on the following tutorial:

Is it possible that the Bluetooth development board is not working correctly?

Kind regards