48 lines
1.4 KiB
Markdown
48 lines
1.4 KiB
Markdown
# desk-reminder
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Simple C program that listens for events from the Alcor Micro AU9540 USB smartcard reader.
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- USB device: `058f:9540` (Alcor Micro Corp. AU9540 Smartcard Reader)
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- Implementation: raw USB using `libusb-1.0`
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The program opens the reader by VID/PID, locates the first interrupt IN endpoint, and prints any data received (typically slot change / card insertion or removal notifications). It does **not** implement full CCID or smartcard protocols, but is useful for observing low-level traffic.
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## Build
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On Debian/Ubuntu and similar, install the development package:
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```sh
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sudo apt-get update
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sudo apt-get install libusb-1.0-0-dev
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```
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Then build the program:
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```sh
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cd desk-reminder
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make
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```
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This produces a `desk_reminder` binary.
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## Run
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You may need root or appropriate udev rules to access USB devices directly:
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```sh
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cd desk-reminder
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sudo ./desk_reminder
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```
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Expected behavior:
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- The program prints which bus/device it opened.
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- It reports which interrupt IN endpoint it is listening on.
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- When the AU9540 reports an event (for example, card insertion/removal), the program prints the raw bytes received.
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Press `Ctrl+C` to stop the program.
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## Notes
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For higher-level smartcard operations (APDU exchange, PIN verification, etc.), you would typically use PC/SC (`pcscd`, `libpcsclite`) instead of talking to the reader via raw USB. This example focuses on listening to the USB interrupt endpoint.
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