LED Headlights

The project consists of a CAN transmitter (hereinafter CAN TX), CAN receivers (hereinafter CAN RX), buttons, PWM chips and outer LEDs

• The CAN transmitter is connected to the buttons. There are 4 buttons to select a mode of the headlights. Each button corresponds to the particular mode
• The CAN TX sends messages to a queue, that is read by each CAN RX
• The CAN RX processes the mode from the message and provides this info to the PWM chip
• The PWM chip coordinates the LEDs

Schema

Set Up

• Download the special arm-none-eabi 13.2.1 toolchain for the ARM architecture

  sudo apt install gcc-arm-none-eabi gdb-arm-none-eabi

• In case apt contains an old version, use an official web page. Search for the x86_64 Linux hosted cross toolchains and AArch32 bare-metal target (arm-none-eabi)
• Download .deb 1.8.0 release of the stlink repository and install:

  sudo dpkg -i stlink_1.8.0-1_amd64.deb

• Check everything is installed correctly by running:

   arm-none-eabi-gcc --version
   st-info --version
   st-flash --version

Build

• To build elf, bin and hex files run make command with the TARGET_NAME argument. Set TX value to compile code of the transmitter, RX - for receiver.

   make TARGET_NAME=TX
   make TARGET_NAME=RX

• To build the executable and flash it to the MCU:

   make flash TARGET_NAME=TX
   make flash TARGET_NAME=RX

Checks

Static Analysis

• Download cppcheck version 2.13.0
• To perform code static analysis run make check TARGET_NAME=<TX|RX>

Asserts

User can enable/disable asserts in the project by providing USE_ASSERTS building parameter. For example: make TARGET_NAME=RX USE_ASSERTS=1