Ford Prototype Vehicle Interface

To build for the Ford prototype, compile with the flag PLATFORM=FORDBOARD.

Flashing a Pre-compiled Firmware

Pre-compiled binaries (built with the BOOTLOADER flag enabled, see all compiler flags) are compatible with the OpenLPC USB bootloader - follow the instructions for Flashing User Code to update the vehicle interface.

Bootloader

The OpenLPC USB bootloader is tested and working, and enables the LPC17xx to appear as a USB drive. See the documentation in that repository for instructions on how to flash the bootloader (a JTAG programmer is required).

Compiling

USB Bootloader

If you are running a supported bootloader, you don’t need any special programming hardware. Compile the firmware to run under the bootloader:

$ make clean
$ PLATFORM=FORDBOARD BOOTLOADER=1 make -j4

The compiled firmware will be located at build/lpc17xx/cantranslator-lpc17xx.bin. See the bootloaders page for instructions on how to load the firmware.

Bare Metal

Once the dependencies are installed, attach a JTAG adapter to your computer and the CAN translator, then compile and flash:

$ make clean
$ PLATFORM=FORDBOARD make -j4
$ PLATFORM=FORDBOARD make flash

The config files in this repository assume your JTAG adapter is the Olimex ARM-USB-OCD unit. If you have a different unit, modify the src/lpc17xx/lpc17xx.mk Makefile to load your programmer’s OpenOCD configuration.

UART

The software configuration is identical to the Blueboard. The Ford prototype includes an RN-41 on the PCB attached to the RX, TX, CTS and RTS pins, in addition to the UART status pin.

When a Bluetooth host pairs with the RN-42 and opens an RFCOMM connection, pin 0.18 will be pulled high and the VI will being streaming vehicle data over UART.

Debug Logging

Logging will be on UART0, which is exposed on the bottom of the board at J3, a 5-pin ISP connector.

LED Lights

The Ford prototype has 2 RGB LEDs. If the LEDs are a dim green and red, then the firmware was not flashed properly and the board is not running.

LED A

  • CAN activity detected - Blue
  • No CAN activity on either bus - Off

LED B

  • USB connected, Bluetooth not connected - Green
  • Bluetooth connected, USB in either state - Blue
  • Neither USB or Bluetooth connected - Off

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