52840 SDK15, SPIM 32M

[??]

Hi！

I read datasheet: nRF52840 Objective Product Specification v0.5. It says 52840. When SPI is master, it supports 32MSPI.

Which of the following examples can I refer to in SDK15?Or which of the following examples of your SDK packages can use 32MSPI to control peripheral read-write operations.

Please give me some advice, thank you!

[Kenneth]

Hello,

You are referring to a very old datasheet, you can download the latest from here:
http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.nrf52/dita/nrf52/chips/nrf52840.html?cp=2_0 

The latest nRF5 SDK is v15.x:
http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk/dita/sdk/nrf5_sdk.html?cp=4_0 

You should be able to use this example as a starting point:
http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk5.v15.0.0/nrfx_spim_example.html?cp=4_0_1_4_5_37

Make sure you have a nRF52840-DK v1.x.x (not v0.x.x).

Best regards,
Kenneth

[??]

Thanks for your advice and the information you provided. Now 32MSPI communication is available.Now I have a question to ask, send and receive

I can only put the buffer in the global data area, can't I store it in the const constant area?So let's say I need to display

Buf_one [size], this buf_one[size] can only be defined as unsigned char, not const unsigned char?

[Kenneth]

All data need to be in RAM, since the EasyDMA can't access Flash directly.

Best regards,
Kenneth