CAN_Bus_STM32F4Discovery

This project is still very experimental, proceed at your own risk.

This project shows how to deal with the CAN peripheral on STM32F4

1. Build and Test Environment

• Os : Mac os x High Sierra.
• IDE : System Workbench (SW4STM32) + STM32CubeMX + HAL V1.18.0.
• 2 x stm32f4discovery boards and 2 x stm32f4discovery shields (MIKROE).
• 2 x USB cables to power and load a program into the target.

2. File organization

• src : the sources or the stm32f4 project.
• inc : the headers or the project.
• Drivers : HAL driver + CMSIS.
• startup : startup file.
• can.ioc : CubeMX file.

3. Setup the environment

• Install SW4STM32 and STM32CubeMX.
• Have a look at the STM32CubeMX Project and peripherals configuration.
• Import the entire directory to the SW4STM32
• Build and run the program on your targets.
• The software can handle Std and Ext message ID. Edit the define directive on the line 52 in the main.c file
• Don't forget to swap the messages ID between the 2 boards before programming them.

4. Hardware setup

The shield board embed a CAN Bus transceiver SN65HVD230 from Texas Instruments.
Below the pin setup :
SN65HVD230_D_PIN <==> PD1/CAN1-TX
SN65HVD230_R_PIN <==> PD0/CAN1-RX

PA0 (blue button) is used in IT mode, to send the message over the CAN Bus.
The state of the LEDs will act according to the message received.
Connect the 2 bords by their CAN transceiver :

BORD1_CAN_H <==> BORD2_CAN_H
BORD1_CAN_L <==> BORD2_CAN_L