Stream data between two nRF51 devices over BLE to UART

[kilianod]

Hello

Is there a way to stream data from one nRF51 device, to a second nRF51 and have the received data sent over UART to a host PC? Basically in my setup, I have a custom PCB with an nRF51822 chip, and I want to stream data from it to a PC connected to an nRF51-DK board for data-logging.

I'm thinking something similar to what is discussed in the following tutorial but between two nRF51 boards:

devzone.nordicsemi.com/.../

Thanks

[Hung Bui]

@Kilianod: We made an example for the nRF51 on client side (central role). You can have a look here.

What it does is to act as the phone in the example you pointed to in your question.

[kilianod]

Thanks for the link. However, I'm having trouble compiling the code, I get the following error, any idea what is causing it, looks like a missing library or something:

..\..\main.c(477): error:  #136: struct "<unnamed>" has no field "gap_enable_params"
  ble_enable_params.gap_enable_params.role              = BLE_GAP_ROLE_CENTRAL;

[kilianod]

So I got it to compile, but I'm not sure what to do with it next and how to connect the two devices. For my setup, I have two nRF51-DK boards. One with the linked example running on S120, while the second device has S110 and running the ble_app_uart_s110_pca10028 example code as suggested on the Github readme file. I have the first board connected to a Serial Terminal program and I get the message "Start.." and it does nothing else. Am I missing something here?

Thanks

[Hung Bui]

Hi kilianod: I found a bug in the code. You can try the fixed branch here.

What you need to do to test is to connect the DK boards to PC (s) and type something into one COM Port after they get connected. The DK will send what you type to the other DK, and will be forwarded to the other COM Port on every 20 byte entered.

[sele835]

Hi Bui. I am trying to do the same thing but with two nRF51 DK boards (pca10028). When I import the main file from your code into an existing hrs project and try to build it, I get linker error: ._build\nrf51422_xxac_s120.axf: Error: L6200E: Symbol GPIOTE_IRQHandler multiply defined (by app_gpiote.o and nrf_drv_gpiote.o)