SPI Read/ Write

[spillari]

Hello, I have been using the SPI read/write commands to talk to a board that I have.

I first write 0x7F = 0x00;

Then I read 0x81 and 0x82 which give me the device part number

 

I am trying to do the same via a sensor script and I only see the first write on the logic analyzer

 

Is there something I am doing wrong in the script, because I see a different MISO. 

And is there a way I can see waveforms for the multiple write command outputs in the logic analyzer?

[attila]

Hi @spillari

See the examples including the default one, and the Help tab or Help/Browse /Protocol/SPI/Sensor about this feature.
Configure the Logic Analyze according your needs (Samples, Rate...)

 

[spillari]

Hello @attila

Thankyou for that. I am now trying to program a register from a different page. When I try to read back a register on the page (0x0280) I do not see the right value. I seem to have given the command wrong. The register address to read from is 0x280 and was 0x01,0x02 in the previous case. Whereas the data sent and received is still 8 bit .

I am trying to send:

0x02FF = 0x00 (write)

0x0280 (read)

 

[attila]

Hi @spillari

Configure the SPI interpreter options in the Logic Analyzer to be 12bits.
Use CmdRead command, you can also use the SPI functions from the Script tool...