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arnie1
arnie1
Visitor II
October 9, 2016
Question

stm32cube, usb host, hid mouse/keyboard

  • October 9, 2016
  • 9 replies
  • 3748 views
Posted on October 09, 2016 at 14:54

hello,

I've been trying to set up some basic usb comunication with a usb mouse using my stm32f4 discvery. there are no usb examples for my board so I went in to look at other boards.

I generated a project with cube inlcuding USB_OTG_FS in host only mode and four IO pins for LED's.

I had a look in the files and it seemed like reading mouse buttons would be fairly trivial, but I can't make it work.

if I run

[code]devtype = USBH_HID_GetDeviceType(&hUsbHostFS);[/code]

it detects the device correctly.

[code]USBH_HID_MouseInit(&hUsbHostFS)[/code] returns USBH_OK

but no matter what I try

[code]mouse=USBH_HID_GetMouseInfo(&hUsbHostFS);[/code] is always NULL

''USBH_HID_MouseInit'' is never mentioned in the documentation(DM00105256.pdf)

also, only the RTOS examples use them. Reading the standalone example, it would seem that to comunicate with a mouse would be as simple as runing GetDeviceType, and GetMouseInfo, but I can't get it to work.

this is all the code I added, it's executed in the main while

[code]

    if(Appli_state == APPLICATION_READY){

    switch(state)

    {

    case 0:

          devtype = USBH_HID_GetDeviceType(&hUsbHostFS);

           if(devtype == HID_MOUSE){

               HAL_GPIO_WritePin(GPIOD,GPIO_PIN_14,1);

               HAL_GPIO_WritePin(GPIOD,GPIO_PIN_12,0);

               state=1;

           }

           else if(devtype == HID_KEYBOARD){

               HAL_GPIO_WritePin(GPIOD,GPIO_PIN_14,0);

               HAL_GPIO_WritePin(GPIOD,GPIO_PIN_12,1);

               state=2;

           }

           else{

               HAL_GPIO_WritePin(GPIOD,GPIO_PIN_14,0);

               HAL_GPIO_WritePin(GPIOD,GPIO_PIN_12,0);

           }

    break;

    case 1:

        if(USBH_HID_MouseInit(&hUsbHostFS)==0){

            HAL_GPIO_WritePin(GPIOD,GPIO_PIN_15,1);

            state=3;

        }

        else {

            HAL_GPIO_WritePin(GPIOD,GPIO_PIN_15,0);

            state=0;

        }

    break;

    case 3:

        mouse=USBH_HID_GetMouseInfo(&hUsbHostFS);

        if(mouse != NULL)HAL_GPIO_WritePin(GPIOD,GPIO_PIN_13,1);

        else HAL_GPIO_WritePin(GPIOD,GPIO_PIN_13,0);

    break;

    default:

        break;

    }

    }

    if(Appli_state != APPLICATION_READY) state=0;

[/code]
    This topic has been closed for replies.

    9 replies

    Amel NASRI
    Amel NASRI
    ST Technical Moderator
    October 11, 2016
    Posted on October 11, 2016 at 15:53

    Hi nurd,

    If you start from the example STM32Cube_FW_F4_V1.13.0\Projects\STM324xG_EVAL\Applications\USB_Host\HID_Standalone, then comment all board specific features, you should be able to run the example on your discovery board.

    -Mayla-

    To give better visibility on the answered topics, please click on "Best Answer" on the reply which solved your issue or answered your question.
    ngo duong
    ngo duong
    Visitor II
    September 22, 2017
    Posted on September 22, 2017 at 00:27

    sorry, I have the same problem. I try to use stm32cube to configure usb host hid for communication with usb mouse but it's not work.

    Please help me.

    erisson
    erisson
    Associate II
    December 19, 2018

    I think you need two basic functions: MX_USB_HOST_Init() and MX_USB_HOST_Process();

    [code]

    int main(void)

    {

    [...]

     MX_USB_HOST_Init();

    while (1)

    {

     MX_USB_HOST_Process();

    if(Appli_state == APPLICATION_READY)

    {

    [...]

    }

    }

    }

    [/code]

    In addition to enabling VBUS

    [code]

    /**

     * @brief Drive VBUS.

     * @param phost: Host handle

     * @param state : VBUS state

     *     This parameter can be one of the these values:

     *      0 : VBUS Active

     *      1 : VBUS Inactive

     * @retval Status

     */

    USBH_StatusTypeDef USBH_LL_DriverVBUS(USBH_HandleTypeDef *phost, uint8_t state)

    {

     /* USER CODE BEGIN 0 */

     /* USER CODE END 0*/

     if (phost->id == HOST_FS)

     {

      if (state == 0)

      {

       /* Drive high Charge pump */

       /* ToDo: Add IOE driver control */

       /* USER CODE BEGIN DRIVE_HIGH_CHARGE_FOR_FS */

    HAL_GPIO_WritePin(OTG_PWR_OUT_GPIO_Port, OTG_PWR_OUT_Pin, GPIO_PIN_SET);

       /* USER CODE END DRIVE_HIGH_CHARGE_FOR_FS */

      }

      else

      {

       /* Drive low Charge pump */

       /* ToDo: Add IOE driver control */

       /* USER CODE BEGIN DRIVE_LOW_CHARGE_FOR_FS */

    HAL_GPIO_WritePin(OTG_PWR_OUT_GPIO_Port, OTG_PWR_OUT_Pin, GPIO_PIN_RESET);

       /* USER CODE END DRIVE_LOW_CHARGE_FOR_FS */

      }

     }

     HAL_Delay(200);

     return USBH_OK;

    }

    [/code]

    I'm reading the values ​​but I do not know how to interpret them.

    AAgha
    AAgha
    Associate II
    April 19, 2019

    Hi engenharia4

    can you tell me about your microsoft keyboard details!?

    i run the code like above with microsoft curve 3000 keyboard but i cant get data form that and always return NULL!

    I would appreciate for your answer

    wwmentz
    wwmentz
    Visitor II
    April 22, 2019

    HI,

    Take a look at this,

    https://community.st.com/s/question/0D50X00009XkZ4KSAV/usb-host

    https://community.st.com/s/question/0D50X00009XkeVgSAJ/stm32cubef4-applications-usb-host-hid-device-issue

    for me, it was the answer,

    I have followed changes proposed by @tsuneo​ , and got all keyboards working.

    hope this helps.

    Att.

    AAgha
    AAgha
    Associate II
    April 23, 2019

    thanks for your reply

    you just exchange the HID_Handle->state = HID_IDLE; with HID_Handle->state = HID_SYNC;

    then keyboards start to communicate?!

    in my case it doesnt work, can you share your code!?

    regards

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