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Add a sketch with Sigrok support. Basically returning the capture buffer in the opposite order.

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Andrew Gillham
2023-10-03 23:00:05 -05:00
parent 71b7c4790d
commit 0b2651864e
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README.md
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@@ -17,6 +17,31 @@ Pins 22-29 (Port A) are used by default.
Client Software
===============
Sigrok support via the 'ols' device configuration has been added. This
mostly involved returning the capture buffer in the reverse order.
Use the `logic_analyzer_sigrok` sketch. Since the OLS alternative client
mentioned below has some issues with newer Java versions, Sigrok is currently
the only practical way to use this logic analyzer. If you use an older machine
with an older operating system and older Java you can probably use the OLS client.
Sigrok support seems to work fairly well so I would currently recommend it for
anyone interested in trying this sketch.
Run PulseView like this on Linux: (I'll add Windows options after more testing)
```
PulseView --driver=ols:conn=/dev/ttyUSB0 --dont-scan
```
It may be necessary to exit and relaunch PulseView to get it to recognize the device.
An easy way to test the device is using the `sigrok-cli` utility. The command below
samples channel 2 at 1MHz. If you get a device not found error, but /dev/ttyUSB0 exists,
run this command a couple times and usually it will start working. Due to the way opening
the serial port resets the Arduino there are some issues/bugs to work out yet.
```
sigrok-cli --driver=ols:conn=/dev/ttyUSB0 --config samplerate=1Mhz --config pattern=External --samples 1024 --channels 2
```
The OLS alternative client hasn't had an official release recently so you will
need to compile it yourself.