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47 lines
1.3 KiB
Markdown
47 lines
1.3 KiB
Markdown
# candev test application
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## About
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This application is a test for using the candev abstraction directly.
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Use this if you want to use a single CAN driver and thus don't need the CAN-DLL layer.
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The CAN_DRIVER variable is used to select the default CAN_DRIVER, supported
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alternatives are:
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- MCP2515 to use `mcp2515` stand-alone CAN controller
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- PERIPH_CAN to use `periph_can` controller, usually requires a CAN transceiver
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as well: e.g. `tja1042` or `ncv7356` (except for native)
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## Usage
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### Sending
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Messages can be sent over the CAN-bus through the `send` command. Optionally, up to 8 bytes can be passed as arguments (in decimal form). If no arguments are passed it will default to sending AB CD EF (hex).
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```shell
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> send <bytes>
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# e.g.: send AA BB CC
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> send 170 187 204
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send 170 187 204
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```
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### Receiving
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The test-app is always listening for incoming CAN messages. They will be stored asynchronously in a buffer and can be requested by means of the `receive` command. Optionally, an argument n can be passed to receive n messages in a row.
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```shell
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> receive <n>
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# e.g.:
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> receive 2
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Reading from Rxbuf...
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id: 1 dlc: 3 Data:
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0xAA 0xBB 0xCC
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Reading from Rxbuf...
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id: 1 dlc: 3 Data:
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0xAA 0xBB 0xCC
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```
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## Native Setup
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Refer to [README.native.can.md](README.native.can.md).
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