ADS 1298 Programming questions

A46810

Other Parts Discussed in Thread: ADS1298

I am new to using ADCs. I want to connect my MSP430 F5525 to the ADS 1298 I am not sure how I program the ADs 1298 via SPI. As far as I understand the SPI can only send 8 bits at a time and the data sheets says that we need to send 24 status bits +24*8 bit data.

How can I set PWDN and other bits via SPI and choose which configuration register to program.

Thanks

over 16 years ago

0 Tom Hendrick over 16 years ago

TI__Guru**** 183041 points

Hi A,

With the MSP430 you would set it up in 3-wire mode and use a GPIO function to control the chip select. to the ADS1298. You can enter a 'write' loop which would send three (or more) 8-bit bytes via the SPI port to the ADS1298. Toggle /CS low, write the desired data, then toggle /CS high... The registers are configured with the WREG command as described in Table 11 on page 37 of the data sheet.

0 salvador bravo jasso over 15 years ago in reply to Tom Hendrick

Prodigy 20 points

Can you tell me more about the spi comunication with ADS1298, I try program, but I can´t. Can you help me with the code of SPI?. Can I send you my code of test communication.

0 Kevin Duke over 15 years ago in reply to salvador bravo jasso

TI__Mastermind 46290 points

Hello Salvador,

It may be easier to just send us a scope shot of your SPI communication. We can then compare your communication lines with the timing diagram of the datasheet and figure out what is wrong first, then fix the problem in code.

Data converters

Data converters forum

ADS 1298 Programming questions