CC2540: Problem using serial terminal with BLE Bridge project

Tony Blake

Part Number: CC2540

Hey guys,

I'm using the BLE Bridge project on a CC2540 module and am trying to transmit 20 bytes of data received from a custom Android app to a serial terminal (RealTerm). The module I'm using is an RF-BM-S02 and I am using an FTDI USB-UART converter cable connecting the module to my laptop. I've stepped through the code and the received data appears to be successfully written to the module UART (a SUCCESS condition is returned from the sendDataToHost() function) but for some reason nothing is displayed in the serial terminal. The baud rate is set to 115200 and I've checked that it is the same in both the module firmware and the serial terminal.

Should this project work out of the box or does some configuration need to be done in order to send received data to a serial terminal?

Cheers,

Tony

over 9 years ago

0 RachelP over 9 years ago

TI__Genius 12815 points

Hi Tony,

Can you provide a logic capture of the UART lines? Did you verify that the module you are using has the same pins available as the EM?

The only thing you may need to reconfigure would be the board layout. The project should work out of box for the CC2541EM.

0 Tony Blake over 9 years ago in reply to RachelP

Intellectual 600 points

Hi Rachel,

Yes I think I need to reconfigure the board layout . Is there any guide that explains how to do this?

Cheers,

Tony

0 Tony Blake over 9 years ago in reply to Tony Blake

Intellectual 600 points

Hi Rachel,

I have verified that the UART pins on my RF-BM-S02 module are the same as those on the CC2540EM (P0_2 for RX and P0_3 for TX) but I am not getting any output signal (I've verified this with a scope). I have also checked the hal_board_config.h file and it looks fine.

Can you suggest any other reason why the UART would not be giving any output?

Kind regards,
Tony

0 Tony Blake over 9 years ago in reply to Tony Blake

Intellectual 600 points

I solved this problem. I was re-mapping the UART before my board had been fully initialized.

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CC2540: Problem using serial terminal with BLE Bridge project