SCPI on a Linux Board - Part 2a: PiFace Digital C programming

RE: SCPI on a Linux Board - Part 2a: PiFace Digital C programming

DAB — Sun, 17 Jun 2018 18:19:49 GMT

Good post Jan.

DAB

RE: SCPI on a Linux Board - Part 2a: PiFace Digital C programming

genebren — Sun, 17 Jun 2018 15:28:59 GMT

Nice addition to your blog series. You are building up a serious set of test tools there.

Good luck on your future work on this series.

Gene

RE: SCPI on a Linux Board - Part 2a: PiFace Digital C programming

Jan Cumps — Sun, 17 Jun 2018 09:01:52 GMT

I’ve checked the hardware on the hat:

8 digital inputs (can all be turned into outputs)

8 digital outputs, open collector, each with LED in parallel.

2 relays with snubber, each sharing one of the outputs. They can be disconnected.

I/O is buffered, not isolated.

For isolation, the two relays can be used. up to 20 V.

I need to chech the functionality of the SPI port expander on board.

Based on its functionality, I’ll write an instrument API. I want to balance between options and ease of use.

Typically, I base it on my own needs and open source it with the most liberal license I find. If anyone needs something else, it’s there to be extended.

RE: SCPI on a Linux Board - Part 2a: PiFace Digital C programming

jomoenginer — Sun, 17 Jun 2018 01:36:02 GMT

Very cool. At my day gig, we have a ton of automated tests that include sending SCPI and GPIB/HPIB over multiple protocols such as Ethernet, USB and Serial on Windows, Linux and Solaris but mainly with Python. This series has looked like an interesting implementation.