AIROC™ Bluetooth Forum Discussions

[AdarshMaurya]

Hello,

I'm trying to connect with the CYBT-353027-02 Bluetooth module using HCI UART provided in J1 connector pins using an external "UART to Serial convertor" and opened that port using "AIROC Bluetooth Debug Tool". The purpose of using these pins is to Understand HCI Uart communication which I'll be using with our MCU later. So I connected VDD,GND, TXD and RXD but still I couldn't able to transmit or receive. Is CTS and RTS pins are necessary for communication.?

If not how to attain connection.?

Thanks in advance

Adarsh Maurya

[advait_kulkarni]

Hi @AdarshMaurya ,

Can you please clarify that you will be using the device in HCI only mode? In that case, please refer to the following article for CTS and RTS pins: https://community.infineon.com/t5/Resource-Library/Run-CYW20706-in-HCI-Mode/ta-p/246397

Thanks and regards,

Advait Kulkarni

[AdarshMaurya]

Hello @advait_kulkarni 

we are just trying to communicate with CYBT-353027-02 Bluetooth module using our MCU to write commands. Can you suggest which UART is best suitable for this communication HCI or PUART?. Also how  to connect that UART pins with our MCU? 

Thanks in advance

Adarsh Maurya

[advait_kulkarni]

Hi @AdarshMaurya ,

We would recommend that use the HCI UART for communication between your MCU host and the BT module. Please refer to the datasheet for HCI UART interface and the pin assignment: https://www.infineon.com/dgdl/Infineon-CYBT-353027-02_EZ-BT_WICED_MODULE-DataSheet-v06_00-EN.pdf?fil... You can use jumper cables/wires for connecting your MCU to the TX/RX pins of the HCI UART on the module.

Thanks and regards,

Advait Kulkarni

[AdarshMaurya]

Hello @advait_kulkarni 

I'm attaching Photos of my connection from host MCU to CYBT-353027-02 Eval-kit for your reference. I'm giving power to eval-board externally. But still can't able to communicate with the module?. I tried swapping Tx and Rx pin also.