nRF52840 DK - PCA10056

[New Guy]

Hi engineers, I got a question regarding nRF52840 (PCA10056), i want to run DTM using PCA10056 board with MT8852B tester. Unfortunately, i keep failing to get the EUT address. Below is the signal diagram of Rx & Tx pin. (Yellow = Rx; Pink = Tx).

The BLE DTM UART interface standard that i used as below:

• 8 data bits
• No parity
• 1 stop bit
• CTS/RTS Flow control
• Baud rates 19200

Can anyone tell me is there any problem on the signal? 

Thx..

[Andreas]

Hi,

 

The signals look somewhat correct, but it is hard to say without seeing more detailed. Have you compared the commands you send with the DTM spec (page 2936 of the BT core spec)?

 

Also how does your setup look like? How do you interface the nRF52 to the MT8852b?

 

Best regards,

Andreas

[New Guy]

Hi,

Managed to run it now...cheers !!