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:

2231c2231
<     assert_param(IS_FDCAN_RX_FIFO(RxLocation));
---
>     //assert_param(IS_FDCAN_RX_FIFO(RxLocation));
2235c2235
<         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 */
2343c2343
<         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 */