nRF51 Dongle and SPI

[MBlau]

Hi,

are the GPIO pins broken out on the nRF51 Dongle configurable and can be used for SPI Slave tests? I have a running system powered by a ARM Cortex 4 (Teensy 3.1) and want to ad bluetooth.

My idea is to let the nRF51822 chip do everything regarding bluetooth and let the Teensy just send data via SPI to the nRF51822. As I am running a measurement with 1000Hz sampling on the Teensy I have no room to do more on the Teensy then send some values via SPI to the nRF51822.

I tried the nRF8001 but it seems like the Teensy has to do a lot of bluetooth management when running with the nRF8001 and the SPi connection is oftentimes blocked a couple of cycles from the nRF8001 (like in starting up or something....)

So basically I want to bye a nRF51 Dongle now and write the code of being a SPI slave just getting like 10 float values with like 50Hz and do all the bluetooth management (hope there is some sample code out delivered with the SDK). Then I want to bye the InsightSiP chip ISP130301 and use this one in my final prototype.

Is this possible? Is the nRF8001 maybe capable of doing the same and I'm missing something right now?

Best regards

[Asbjørn]

Yes, there are a few GPIOs routed out to the side of the nRF51-Dongle and they can all be used for SPI slave testing. Have a look at the HW files and just configure the SPI slave to use four pins routed out on the side.