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README.md
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_platformio.ini
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README.md

stm32f407

F407

Any 168MHz STM32F4 series will work.

  • STM32F405
  • STM32F407
  • STM32F415
  • STM32F417

I used this as a reference.

Changes from the original

  • frame format
    This example support Extended frame format: with 29 identifier bits.

  • CAN port
    In this example, you can select the CAN port.

  • CAN1 and CAN2
    In this example, you can use CAN1 and CAN2 port.

Remap CAN port

STM32F405/407/415/417 have two CAN ports.
You can use only CAN1 or both CAN1 and CAN2, but you cannot use only CAN2.

These GPIOs can be used as CAN.

CAN RX TX
CAN1 PA11 PA12
CAN1 PB8 PB9
CAN1 PD0 PD1
CAN1 PI9 PH13 Not supported
CAN2 PB5 PB6
CAN2 PB12 PB13

CAN1_RX mapped to PA11, CAN1_TX mapped to PA12
CAN2_RX mapped to PB5 , CAN2_TX mapped to PB6

CANInit(CAN_1000KBPS, 0);  // CAN_RX mapped to PA11, CAN_TX mapped to PA12

CAN1_RX mapped to PB8 , CAN1_TX mapped to PB9 (not available on 36-pin package)
CAN2_RX mapped to PB12, CAN2_TX mapped to PB13(not available on 36-pin package)

CANInit(CAN_1000KBPS, 2);  // CAN_RX mapped to PB8, CAN_TX mapped to PB9

CAN1_RX mapped to PD0 , CAN1_TX mapped to PD1 (available on 100-pin and 144-pin package)
CAN2_RX mapped to PB12, CAN2_TX mapped to PB13(not available on 36-pin package)

CANInit(CAN_1000KBPS, 3);  // CAN_RX mapped to PD0, CAN_TX mapped to PD1

Serial Output with Virtual COM port

STM32F407 can use a Virtual COM port.
If you enable Virtual COM port, you can use the USB port as a serial port.
Basic Extended CAN(BxCan) and Virtual COM port can be used at the same time.
When using the USB port, do not supply power from the ST-LINK module.

Serial Output without Virtual COM port

The output destination of Serial.print differs depending on the Board Part Number.
This is a sample of some boards.

  • genericSTM32F407xxxx:PA0
  • diymore_f407vgt:PA9
  • black_f407xx:PA9
  • disco_f407vg:PA2

You need to check variant_generic.h for your board.
https://github.com/stm32duino/Arduino_Core_STM32/blob/main/variants/STM32F4xx/

Using PlatformIO

git clone https://github.com/nopnop2002/Arduino-STM32-CAN
cd Arduino-STM32-CAN/stm32f407
pio init --board genericSTM32F407VET6
cp _platformio.ini platformio.ini
cp stm32f407.ino src/

# Without Virtual COM port
pio run -t upload -e genericSTM32F407VET6

# With Virtual COM port
pio run -t upload -e genericSTM32F407VET6_usbcon