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README.md

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Rearbox

This PCB combines components for the rear side of the vehicle.

Features

Communication:

  • 2 CAN transceivers
  • UART (internal only)
  • SPI (internal only)
  • I2C (internal only)

Outputs:

  • 2 fan drivers
  • 2 pump drivers
  • ASSI driver
  • RTDS driver
  • brake light driver

Inputs:

  • 12 digital safety inputs
  • 2 suspension load cell sensors
  • 2 suspension potentiometer sensors
  • 2 water pressure sensors
  • 2 water temperature sensors
  • monocoque temperature sensors

Firmware

Important

For the CAN library to work correctly, the auto-generated HAL driver file needs to be patched.

Make sure to restore any changes made by the generator to the firmware/Drivers/STM32G4xx_HAL_Driver/Src/stm32g4xx_hal_fdcan.c file or the receiving won't work!

Below are the changes that need to be made to the stm32g4xx_hal_fdcan.c file:

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<     assert_param(IS_FDCAN_RX_FIFO(RxLocation));
---
>     //assert_param(IS_FDCAN_RX_FIFO(RxLocation));
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<         if(RxLocation == FDCAN_RX_FIFO0) /* Rx element is assigned to the Rx FIFO 0 */
---
>         if(RxLocation == 0) /* Rx element is assigned to the Rx FIFO 0 */
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<         if(RxLocation == FDCAN_RX_FIFO0) /* Rx element is assigned to the Rx FIFO 0 */
---
>         if(RxLocation == 0) /* Rx element is assigned to the Rx FIFO 0 */