Nrf52832 Low Sample Rate Data Transfer

[boracelebi]

Hi all,

I am a newbie in ble and also nordic. I have an application need that would do some lowfi sound data transfer which 16 bits at 14k sample rate from central device as a windows or android to the chip. I will use a PCM type data and use a TI 5122 DAC. I2S side is ok. I interfaced with that chip before and easyDMA along with I2S driver is simple that i can understand on Nordic. 

But i need an example which shows a real time data transfer over BLE. I would write the PC side application with Windows API but i need an example where i can change to my own needs. Does Nordic has that? Or how can i implement a lowfi audio continous transfer. Thanks 

[Jared]

Hi,

We don't have an example that does exactly that but a good starting point would be the ble_app_uart example which shows how to transfer data over BLE. You can find the documentation on all of the examples in the SDK here.

regards

Jared

[boracelebi]

thanks. will the speed rate be enough on this uart example? my application is not over the limits of BLE i think for nrf52832

[Jared]

The available throughput always depends on the connection parameters such as the data length and the connection interval. See the throughput example for more info. 

[boracelebi]

Thanks again. I see the details on how to increase the throughput. IO was wondering if the uart example is up to it but every one of them should be ok. But i think for Nordic UART Service there is no windows 10 drivers that i can write an application on as there is for android. So i should program it via Windows api i believe. To be able to transfer data from pc to nrf52. Thanks again

[Jared]

Hi,

If you're going to make your own Windows application that is going to communicate with the nRF then I recommend checking out our Getting started guide for nRF Connect for Desktop on Github here.