How to define own macros?

[Knochi]

Hi,

got my BusPirate and now I’m thinking of how to use it. I understood that i can simply write and read to/from serial interfaces from the demos. And that there are a few macros that perform this commands automatically.
So how can i define my own macros for my application?

Let’s say I want to setup an A2B Audio Bus for that i would need to enable a 48kHz clock and then write and read a bunch of registers. Can i put that into some kind of macro or program?
Sorry if I missed something in the documentation but I’m a bit lost in all this stuff.

Thanks in adcance
David

[ian]

I’d you want to add commands or modes, there are two “dummy” examples in the code.

If you just want to repeat repetitive tasks, there’s some working going on here:

Ideas for executing bus syntax macros from file

I’d love to look over the code and get this feature added. Here is a merge diff: And this is the complete branch: What do you think of adding it a macro command instead of loading in the macro directly? The active macro file could be saved as a setting in the mode configuration files and set automatically when the mode is entered. I would also suggest getting rid of the : All really good ideas, I’ll try to implement those suggestions as soon as I’ve time. Thanks a lot for taking …

[ian]

Had a few minutes to read over the A2B site. It looks like a transport layer? I2C/I2S/SPI can all flow through a 2 wire interface, and the transceivers decode that while also having on-board voltage regulation/output from the 2 wire setup?

The Bus Pirate supports I2C and SPI already. There is an I2S PIO program for the RP2040, I’d like to add it but don’t have anything to test with at the moment.

How do you want to access the A2B bus?

[Knochi]

Yes, basically it brings the I2S Interface to the wire. Once set up you can connect audio peripherals as they where on one board with only 2 samples latency.

I’m a hardware developer at a big car vendor and responsible for this bus.
I would like to try a few things and see if I can make it work. Shouldn’t be a big problem since I already achieved this with an arduino. For the beginning I would just generate an 48kHz clock and set up the bus via I2C commands.

[ian]

There’s user defined macros now:

Ideas for executing bus syntax macros from file

To get more familiar with the code base I tried to implement a small feature that i needed when experimenting with a LORA SX1280 xciever: reading and executing macros from a file. I’ve implemented a quick (and dirty…) proof of concept that is working enough to start discussing about it Please note that everything that follows is just a simple proposal and is open to comments and critics (== please do!) [1_file] File format for now is really simple. I did not use json for two r…

And also some scripting ability:

Tutorial command for playing demos, etc

With the addition of the user macros loaded from disk, I thought it might be time to add the tutorial command as well. [image] The goal of this command is to ‘play’ simple tutorial scripts for demonstrating how to use the bus pirate, or how to use a specific chip. The tutorials are saved on the internal flash storage. # marks comments, which are displayed as instructions. Everything else is printed on a fake command prompt and (will) wait for the user to hit enter (or x for exit). There’s s…

[ian]

Firmware development updates

[image] It was strangely easy to add scripting. The latest build has two new commands: script and tutorial. Both are based on the same scripting system. # This is a sample tutorial! # Welcome! # This is some syntax, hit enter to execute it! [0x00 0xff r:2] # This is a comment! It's not executed! # Here's a full on command! # Hit enter to execute it! pause # Did it pause? Very simple text format for tutorials and scripts. Lines with # are comments and will (optionally) be printed in the ter…

This is a better overview of scripting