35 lines
1.1 KiB
Markdown
35 lines
1.1 KiB
Markdown
# Door Control
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A project to interface an electronic door lock actuator by Abus with a PC using
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an Adafruit Feather STM32F405 Express.
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## Goals
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- USB-serial converter @ 115200 baud to pass through commands to an external
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NXP532 NFC controller. This will be used to authenticate people who want to
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open the door.
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- Readout of the current door state. This is done by connecting to the two
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outputs of the rotary encoder and integrating the changes.
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- Opening and closing the door by simulating presses of two buttons.
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## Wiring
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TODO. Add pictures and stuff.
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## Communication
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Endpoint 3 is the serial bridge to the NFC controller and should show up as e.g.
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/dev/serial/by-id/usb-Imaginaerraum.de_DoorControl_433632201350535727003F0-if03
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(depending on the ID of the STM32F405).
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Endpoint 1 is another serial interface and used for all other functions.
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Command characters:
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- 'B': Print the battery voltage
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- 'C': Closes the door
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- 'O': Opens the door
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- 'R': Print the encoder position
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Currently, a change in the encoder value will be communicated immediately, as
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"pos: %d\r\n", the same format returned by the 'R' command.
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