Makefile Options¶

These options are passed as shell environment variables to the Makefile, e.g.

$ PLATFORM=FORDBOARD make

Note

Try adding the -j4 flag to your calls to make to build 4 jobs in parallel - the speedup can be quite dramatic.

Note

Don’t miss the Fabric helper scripts for the most common build configurations.

PLATFORM

Select the target microcontroller platform.

Values: FORDBOARD, CHIPKIT, CROSSCHASM_C5_BT, CROSSCHASM_C5_CELLULAR, BLUEBOARD

Default: CHIPKIT

Note

The old Platform variable CROSSCHASM_C5 has been renamed to CROSSCHASM_C5_BT

DEBUG

Set to 1 to compile with debugging symbols and to enable debug logging. By default the logging will be available via the logging USB endpoint - for UART output, see the DEFAULT_LOGGING_OUTPUT flag. This also forces DEFAULT_POWER_MANAGEMENT=ALWAYS_ON and DEFAULT_CAN_ACK_STATUS=1.

Values: 0 or 1

Default: 0

BOOTLOADER

By default, the firmware is built to run on a microcontroller with a bootloader (if one is available for the selected platform), allowing you to update the firmware without specialized hardware. If you want to build to run on bare-metal hardware (i.e. start at the top of flash memory) set this to 0.

Values: 0 or 1

Default: 1

TRANSMITTER

Set this to 1 to force DEFAULT_POWER_MANAGEMENT=ALWAYS_ON and DEFAULT_USB_PRODUCT_ID=0x2. This is useful if you are using the VI as a transmitter in a local CAN bus for bench testing. You can address it separately from a receiving VI because of the different USB product ID.

Values: 0 or 1

Default: 0

DEFAULT_LOGGING_OUTPUT

When combined with DEBUG, controls the output interface used for debug logging. See the platform docs for details on how to read this output.

Values: OFF, USB, UART or BOTH

Default: USB

DEFAULT_METRICS_STATUS

Set to 1 to enable logging CAN message and output message statistics over the normal DEBUG output.

Values: 0 or 1

Default: 0

DEFAULT_CAN_ACK_STATUS

If 1, the VI will be an active CAN bus participant and send low-level ACKs. If the bus speed is incorrect, can interfere with normal bus operation. This is useful if you are bench testing with 2 VIs and you need the CAN messages to be propagated up the stack.

If 0, the VI will be a listen only node and will not ACK messages. An incorrect bus speed will not have a negative impact on the bus, but you still won’t be able to read anything.

See the testing section for more details.

Values: 0 or 1

Default: 0

DEFAULT_ALLOW_RAW_WRITE_NETWORK

By default, raw CAN message write requests are not allowed from the network interface even if the CAN bus is configured to allow raw writes - set this to 1 to accept them.

Values: 0 or 1

Default: 0

DEFAULT_ALLOW_RAW_WRITE_UART

By default, raw CAN message write requests are not allowed from the Bluetooth interface even if the CAN bus is configured to allow raw writes - set this to 1 to accept them.

Values: 0 or 1

Default: 0

DEFAULT_ALLOW_RAW_WRITE_USB

By default, raw CAN message write requests are allowed from the wired USB interface (if the CAN bus is also configured to allow raw writes) - set this to 0 to block them.

Values: 0 or 1

Default: 1

DEFAULT_OUTPUT_FORMAT

By default, the output format is JSON. Set this to PROTOBUF to use a binary output format, described more in Binary Output Format.

Values: JSON, PROTOBUF

Default: JSON

DEFAULT_RECURRING_OBD2_REQUESTS_STATUS

Set this to 1 to include a set of recurring OBD-II requests in the build, to be requests immediately on startup.

Values: 0 or 1

Default: 0

DEFAULT_POWER_MANAGEMENT

Valid options are ALWAYS_ON, SILENT_CAN and OBD2_IGNITION_CHECK.

Values: ALWAYS_ON, SILENT_CAN, OBD2_IGNITION_CHECK (will cause the VI to write messages to the bus)

Default: SILENT_CAN

DEFAULT_USB_PRODUCT_ID

Change the default USB product ID for the device. This is useful if you want to address 2 VIs connected to the same computer.

Values: 0x0 to 0xffff

Default: 0x1

DEFAULT_EMULATED_DATA_STATUS

Set this to 1 to have the VI generate random data and publish it as OpenXC vehicle messages.

Values: 0 or 1

Default: 0

DEFAULT_OBD2_BUS

Sets the default CAN controller to use for sending OBD-II requests. Valid options are 0 (don’t send any OBD-II requests), 1 or 2. The default value is 1.

Values: 0 (off), 1 or 2

Default: 1

NETWORK

By default, TCP output of OpenXC vehicle data is disabled. Set this to 1 to enable TCP output on boards that have an Network interface. Note that the NETWORK option is broken on the chipKIT Max32 build for the moment, see https://github.com/openxc/vi-firmware/issues/189.

Values: 0 or 1

Default: 0