SPI Communication Problems Concerning nRF52840

[June6]

Now there is a project, nrf52840 uses SPI to communicate with other microcontrollers. Data is currently available, but it is suspected that each packet lacks a second byte. The corresponding modification of SPI mode eliminates the problem of SPI mode. Are there any other parameters that affect the results of the data?

SPI Communication Program Reference Sample Program （sdk15.0    examples\peripheral\spi\pca10040）

[June6]

Hope to be helped.

Best wishes

June6

[Edvin]

Can you try to analyze the SPI MOSI and MISO lines to see if you are actually missing any data?

[June6]

All right. That's what I'm going to do. The day after tomorrow, I will connect the data source directly to the oscilloscope to monitor the data waveform, so that I can know where the problem is. Thank you for your reply.

[June6]

HI Edvin,Now it turns out that the second byte data is missing when receiving data.

[June6]

Can you test whether you will lose data when receiving data with SPI? The data received by SPI in my program is only 16 bytes, but the data transferred is actually 17 bytes. I lost the second byte data.