CCS/CC2652R: SPI Frame format

Sebastian21

Part Number: CC2652R
Other Parts Discussed in Thread: ADS1292

Tool/software: Code Composer Studio

Hello,

I am working with CC2652R1F SoC. I need to communicate by SPI with ADS1292 sensor and with LIS3DSH.

The problem is:

1) The required SPI clock polarity is not the same for the two sensors.

2) The required SPI clock phase of the ADS1292 sensor is not the same for writing and reading.

How could i change the frame format after open the SPI?

Best regards,

Sebastian

0 FI over 5 years ago

Hi,

You may have to reconfigure(SPI_open()) the SPI with different polarity for the other device.

regards.

0 Sebastian21 over 5 years ago in reply to FI

Hello,

Thank you for your response,

Actually I cannot beacause I have to do it during the communication. The sensor receive data in falling edge and send it in rising edge.

Best regards,

Sebastian

0 FI over 5 years ago in reply to Sebastian21

Hi,

The only other thing I can suggest is that since there are two SPI modules you could attach the sensors one on each.

Thanks,

0 FI over 5 years ago in reply to FI

Hi,

Were you able to resolve this issue? I am going to close this thread for now if you have any questions please re-open.

Thanks.

0 Sebastian21 over 5 years ago in reply to FI

Hello,

I used this:

SSIConfigSetExpClk(SSI1_BASE,48000000,SSI_FRF_MOTO_MODE_1,SSI_MODE_MASTER,1000000,8);

It works.

Thank you for your help,

Regards

Sebastian

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