Reading the sensor data through SPI DMA and send through USB parallelly

[Saagar]

Hi Nordric,

In our application we want to receive the sensor data using SPI-DMA and to send processed data on USB.

1. Is it possible to receive sensor data and directly send on USB with minimum usage of CPU Time? 

2. Is it possible to configure SPI Clock as 24Mhz? If possible Please suggest how to process.

[Sigurd]

1. Is it possible to receive sensor data and directly send on USB with minimum usage of CPU Time? 

 It would require some CPU time to send it over USB.

2. Is it possible to configure SPI Clock as 24Mhz?

 No. 24Mhz is not possible.From https://infocenter.nordicsemi.com/index.jsp?topic=%2Fps_nrf52840%2Fspim.html&anchor=register.FREQUENCY

[Saagar]

Thanks for the reply..

Is there any example of USB with easy DMA?

Any link how to add easyDMA to usb?

or Is easyDMA is already implemented with usb_cdc class example?

[Sigurd]

Saagar said:

or Is easyDMA is already implemented with usb_cdc class example?

Yes, easyDMA is already used by the USB library and USB CDC class.

[Saagar]

Thank you for your response

Can we flash peripheral examples using ota feature?

I have flashed the usb code but it is not working, If I flash ble example code it will work.

 As my application don't need softdevice so I tried removing --sd-req , I am getting above error.

How to generate .zip file for peripheral examples which doesn't require softdevice.

Thankyou

[Sigurd]

Hi,

Saagar said:

As my application don't need softdevice so I tried removing --sd-req , I am getting above error.

 In that case, set --sd-req to 0x00