ADS1298: ADS1298: can't read ID

Jan Hadorn

Part Number: ADS1298

hi,

I have a problem with the SPI communication.

I can't describe the registers to configure the ADS1298 for my application. Therefore I tried to read only the ID at the beginning. But this gives me the wrong value back.

yellow : SCLK

green : MISO

blue : CS

red : MOSI

my code:

over 7 years ago

0 Alexander Smith over 7 years ago

TI__Guru 60822 points

Hi Jan,

Thanks for your post and welcome to the forum!

Please see the SPI debug FAQ's located here: e2e.ti.com/.../2855202

0 Jan Hadorn over 7 years ago in reply to Alexander Smith

Prodigy 30 points

Hi Alexander

Thank you for your answer

I've read and tried the debug FAQ's, but I don't understand why it doesn't work.

is the above code with the startup sequence correct?

Best regards

Jan

0 Alexander Smith over 7 years ago in reply to Jan Hadorn

TI__Guru 60822 points

Hi Jan,

What step of the SPI debug list are you having difficulty with?
Check your polarity settings using the FAQ as well.

0 Jan Hadorn over 7 years ago in reply to Alexander Smith

Prodigy 30 points

Hi Alexander

I was able to solve the problem now. The problem was that CS was dragged to 0 between bytes during the transaction.

0 Alexander Smith over 7 years ago in reply to Jan Hadorn

TI__Guru 60822 points

Hi Jan,

Great! Let us know if you have additional questions by creating another thread.

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ADS1298: ADS1298: can't read ID