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STM32F4 HID Host custom device

Krunal Khetani

Hello,

I am interested to make USB HID HOST which can communicate with custom hid device instead of mice or keyboard.

For that I have to send data to that custom hid device.
I have used below fuction for dataout
USBH_InterruptSendData (pdev, (unsigned char *)&HID_Machine.buff, HID_Machine.length, HID_Machine.hc_num_out);

I am only doing out transaction form Host(STM32) to device. Everything is perfect and working fine up to 14th frame but 15th frame get corrupted, I have analyzer showing "child has an error". So I am unable to understand the cause of issue, is it memory overflow at host?

If I continue data transmission with new data then host is sending old data packet onwards

I used dual core example for ST and modified USBH_HID_Handle() as below (Only two cases are shown here)


case HID_SEND_DATA:

while(USB_OTG_IsEvenFrame(pdev) == FALSE);

USBH_InterruptSendData (pdev, (unsigned char *)&HID_Machine.buff, HID_Machine.length, HID_Machine.hc_num_out);

HID_Machine.state = HID_BUSY;

HID_Machine.timer = HCD_GetCurrentFrame(pdev);

break;

case HID_BUSY:

if(( HCD_GetCurrentFrame(pdev) - HID_Machine.timer) >= HID_Machine.poll)

{ HID_Machine.state = HID_SEND_DATA; //Retry++; //1 }

else if(HCD_GetURB_State(pdev , HID_Machine.hc_num_out) == URB_DONE) //last transaction was successful or not(USB request Block)

{ HID_Machine.state = HID_GET_DATA;

BD_Data_Sent_Flag=1;

}

else if(HCD_GetURB_State(pdev, HID_Machine.hc_num_out) == URB_STALL )

{

if( (USBH_ClrFeature(pdev, pphost, HID_Machine.ep_addr, HID_Machine.hc_num_out)) == USBH_OK)

{

HID_Machine.state = HID_SEND_DATA;

} }

break;


Please help...

Parents
  • 0 in reply to Krunal Khetani

    Thank you for reply.
    It appears eror at
    HID_Machine.cb = &HID_CUSTOM_cb;
    Where I need to define it.
    And after that how can I send data to HID device.
    Here ís my code
    int main(void)
    { __IO uint32_t i = 0, count; SystemInit(); USART_Config(); /*!< At this stage the microcontroller clock setting is already configured, this is done through SystemInit() function which is called from startup file (startup_stm32fxxx_xx.s) before to branch to application main. To reconfigure the default setting of SystemInit() function, refer to system_stm32fxxx.c file */

    printf(" MCU Start\r\n");

    /* Init Host Library */ USBH_Init(&USB_OTG_Core_dev,
    #ifdef USE_USB_OTG_FS USB_OTG_FS_CORE_ID,
    #else USB_OTG_HS_CORE_ID,
    #endif &USB_Host, &HID_cb, &USR_Callbacks);

    while (1) { /* Host Task handler */ USBH_Process(&USB_OTG_Core_dev , &USB_Host); }
    } I modify from STM32_USB-Host-Device_Lib_V2.1.0
    My Host HID (STM32-F4 Dícovery) is found HID device.

Reply
  • 0 in reply to Krunal Khetani

    Thank you for reply.
    It appears eror at
    HID_Machine.cb = &HID_CUSTOM_cb;
    Where I need to define it.
    And after that how can I send data to HID device.
    Here ís my code
    int main(void)
    { __IO uint32_t i = 0, count; SystemInit(); USART_Config(); /*!< At this stage the microcontroller clock setting is already configured, this is done through SystemInit() function which is called from startup file (startup_stm32fxxx_xx.s) before to branch to application main. To reconfigure the default setting of SystemInit() function, refer to system_stm32fxxx.c file */

    printf(" MCU Start\r\n");

    /* Init Host Library */ USBH_Init(&USB_OTG_Core_dev,
    #ifdef USE_USB_OTG_FS USB_OTG_FS_CORE_ID,
    #else USB_OTG_HS_CORE_ID,
    #endif &USB_Host, &HID_cb, &USR_Callbacks);

    while (1) { /* Host Task handler */ USBH_Process(&USB_OTG_Core_dev , &USB_Host); }
    } I modify from STM32_USB-Host-Device_Lib_V2.1.0
    My Host HID (STM32-F4 Dícovery) is found HID device.

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