Host MCU controls CYBT-483056-02 module through UART

[jmkjegadees]

I connected External Host MCU to CYBT-483056-02 module thru UART lines and like to transfer serial data using CYSPP mode. 

XRES of CYBT-483056-02 set to High, CYSPP pin set to High for put into command mode.

When I Reset the module and monitor the UART_TX pin using an oscilloscope during the boot process. If the module boots normally, the system_boot (BOOT, ID=2/1) API event should occur but I couldn't see any response & event from UART_TX pin. When I send /RFAC command from Host MCU, I am not getting any response from CYBT-483056-02 module. Is there any settings / configurations on special function pins and CYBT-483056-02 module?

[DheerajPK_41 · Accepted solution]

Hi,

Could you please confirm whather you have done all the steps mentioned in the user guide or not? Detailed steps are given in the document. 

https://www.infineon.com/dgdl/Infineon-EZ-Serial_WICED_Firmware_Platform_User_Guide_for_CYBT-4830XX-...

To start CYSPP operation, I think we need to assert (LOW) the CYSPP pin. That's what I can see in the document. Please check it once.

Thanks,

-Dheeraj.P.K

[jmkjegadees]

Thank you for your response. 

I believe I have followed the steps provided in the user guide document. UART TX,RX,CTS and RTS pins are connected to external Host MCU as given in the document. 

EZ-Serial’s UART interface has two required signals for data and two optional signals for flow control, if enabled:
 Required: RXD – Receive data (input), connect to host TXD (output)
 Required: TXD – Transmit data (output), connect to host RXD (input)
 Optional: RTS – Module-side flow control (output), connect to host CTS (input), default enabled
 Optional: CTS – Host-side flow control (input), connect to host RTS (output), default enabled

Before enter into CYSPP mode, I would like to configure the CYBT-483056-02 module such as reset the module , setting of transmit power, device name etc so that  I have set CYSPP pin to HIGH to put into Command mode.

 CYSPP pin externally de-asserted (HIGH): Command mode (text or binary)
 CYSPP pin externally asserted (LOW): CYSPP mode

Whenever I send any API command from Host MCU like /RFAC , GBA , I am not seeing any response from BLE module. 

Is there a way to find out whether module is pre-programmed with EZ-Serial Firmware?

I am not sure whether I missed any settings on HW pins. Have we required to control CTS , RTS pins while transmit commands or receive response/event?

Thanks,

MuthuKumar

[ScottKerstein]

Hi Muthu,

When EZ-Serial is programmed and module powered, you will be able to see the module advertising using CySmart app along with the xx:xx:xx address.

Scott