Using message protocol for AFE4403 evaluation board

Ed Ang

Other Parts Discussed in Thread: AFE4403

Hi,

I am trying to make sense of the message protocol provided with the AFE4403 evaluation board. Within the protocol, it says:

'To capture 1024 packets, PC sends '0x01, 0x2A, 0x00, 0x00, 0x04, 0x00, 0x0D '

which is the payload, arranged in sequence, to the board.

Programatically, what does it mean? How can I implement this as a Python script?

There are some example scripts for read and write registers, but there aren't any API functions to transmit these values. How do I use the message protocol?

Thanks

over 8 years ago

0 Amy Schnoor over 8 years ago

TI__Mastermind 18275 points

Ed,

We have received your post and hope to respond soon.

0 Ed Ang over 8 years ago in reply to Amy Schnoor

Prodigy 90 points

Thanks, I look forward to it.

0 Amy Schnoor over 8 years ago in reply to Ed Ang

TI__Mastermind 18275 points

This message communication protocol is used to understand what the GUI expects as an input when receiving information. Currently this is what our MSP430 is giving as an input to the GUI.

For example 0x01 would be the "Start BYTE" and 0x0D would be the "Stop BYTE" to indicate the start and stop of a data packet.

0 Ed Ang over 8 years ago in reply to Amy Schnoor

Prodigy 90 points

Hi Amy,

Thanks for getting back to me. I managed to figure it out in the end. What wasn't clear in the protocol was the fact the payload was composed of ascii characters, the preceding '0x3' could be thought of as label for the payload. Took me a bit of time to figure out why '0x3c' didn't work, when really it should be '0x43' ...

Cheers

0 Amy Schnoor over 8 years ago in reply to Ed Ang

TI__Mastermind 18275 points

Ed,

Glad you were able to figure it out. Thanks for the feedback on the document as well.

Data converters

Data converters forum

Using message protocol for AFE4403 evaluation board