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b8e52707e9
Previously, it could never write more than a few bytes before pingpong getting a mismatch error. Now, I can pingpong Collapse OS binary without a mismatch.
29 lines
1.1 KiB
Markdown
29 lines
1.1 KiB
Markdown
# Tools
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This folder contains tools to communicate to Collapse OS machines from a modern
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environment or to manipulate a blkfs.
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Communication tools all take a device path as a first argument. That device is
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the serial device that connects you to your machine. It's often a USB-to-TTL
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dongle. When `-` is specified, `stdin` is used as the device.
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Note that for these tools to work well, you need the serial device to be
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properly set up, TTY-wise. You'll probably want to do that with `stty`. The tool
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itself takes care of setting the regular stuff (`cs8`, `-parenb`, etc), but you
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need to set the speed. Here's an example working on OpenBSD:
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$ ( stty 115200 raw ; ./upload - a000 os.bin ) <>/dev/cuaU0
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To be honest, I'm having a bit of troubles making these tools work as well on
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OpenBSD as they do in Linux. But it *does* work. Here are some advices:
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* Use `cuaXX` instead of `ttyXX`.
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* Run `cu -l /dev/cuaXX` before running your tool and run a dummy command to
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make sure that the output buffer is flushed.
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On Linux, it's generally easier:
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* Run screen on the device (often `/dev/ttyUSBX`)
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* Quit with `CTRL+A :quit`
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* Run the tool on the same device
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