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• Enable USB

  F Caminade • 03/12/2021 at 13:04 • 0 comments

  The USB port is connected on PB15 and PB14 (OTG HS).

  To enable the Serial on this port, you have to configure the compiler options in the Arduino IDE :

  In "Tools" choose :
  

  • U(S)ART support : Disabled
    
  • USB support : CDC generic serial
    
  • USB speed : High speed in full speed mode
    

  Now the board should be reconized as an USB device
  

• CAN1 & CAN2

  F Caminade • 03/12/2021 at 09:31 • 0 comments

  Now I want to check if the 2 CAN buses work.
  

  I am going to use the stm32f407.ino example from this repository : https://github.com/nopnop2002/Arduino-STM32-CAN

  1/In the stm32f407.ino I add these lines (in the

  "bool CANInit(BITRATE bitrate, int remap)" function) in order to match to the hardware :
  

    if (remap == 4) {
      // CAN1
      RCC->AHB1ENR |= 0x2;                 // Enable GPIOB clock 
      CANSetGpio(GPIOB, 8);                // Set PB8
      CANSetGpio(GPIOB, 9);                // Set PB9
      
      // CAN2
      RCC->AHB1ENR |= 0x2;                 // Enable GPIOB clock 
      CANSetGpio(GPIOB, 5);                // Set PB5
      CANSetGpio(GPIOB, 6);                // Set PB6
    }

  2/In the setup add :
  

      bool ret = CANInit(CAN_1000KBPS, 4);

  If you want to send to CAN2:
  

    //uint8_t send_ch = 1; //send to CAN1
    uint8_t send_ch = 2; ////send to CAN2

  Both CAN work : we have the bases !
  

• 1st program upload

  F Caminade • 03/11/2021 at 17:38 • 0 comments

  After many tries I have succeded to flash the STM32. Details in "Build Instructions".
  

  First issue : impossible to connect  the STM32 and the STLINK. Solution : Put the NRST pin to the GND, click on connect in the cube programmer, then after 1s disconnect NRST.
  

  Second issue : The program doesn't start due to a wrong board selection in the ARDUINO IDE. Solution : In the list select the Blue F407VE mini.  Should correspond to this board (??) : https://stm32-base.org/boards/STM32F407VET6-VCC-GND-Small
  

  
  

  Next step : CAN test
  

• Pinout

  F Caminade • 03/11/2021 at 16:34 • 0 comments

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