MSP430F67791: How to access ADC register through SPI?

nikhitha pagidi

Prodigy 40 points

Part Number: MSP430F67791
Other Parts Discussed in Thread: MSP430F6779

Hi,

How we can access the ADC registers of the MSP430F6779 module for RAW data through SPI?

regards.

over 2 years ago

0 Jace H over 2 years ago

TI__Guru 56685 points

Hello Nikhitha,

You would need to write a protocol (SPI commands), add them to your SPI state machine, then write code that process those commands to write to registers. If you are just looking for Data, this simplifies things as you only really need 1-2 commands, and you can preemptively store ADC data in a buffer.

0 nikhitha pagidi over 2 years ago

Prodigy 40 points

Hi Jace,

Thanks for the reply,

Jace H said:
If you are just looking for Data

Yes I am looking only for the data (RAW data) captured into the register.

and In which registers RAW data is stores where i can find them.

Regards.

0 Jace H over 2 years ago in reply to nikhitha pagidi

TI__Guru 56685 points

Hello Nikhitha,

ADC results are stored in the ADCxMEMy registers you set to each channel. You can utilize DMA to transfer to a buffer in memory or straight to SPI FIFO depending on how you write your application. Please see te ADC chapter in the TRM for more information.

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MSP430F67791: How to access ADC register through SPI?