The questions about stm32f1 Usb-hid.The libs from TM32 USB-FS-Device Lib V4.1.0' Custom HID#Insert get report in RESULT CustomHID_Data_Setup/usb_prop.c
The original CustomHID_Data_Setup function ：
RESULT CustomHID_Data_Setup(uint8_t RequestNo)
{
uint8_t *(*CopyRoutine)(uint16_t);
if (pInformation->USBwIndex != 0)
return USB_UNSUPPORT;
CopyRoutine = NULL;
if ((RequestNo == GET_DESCRIPTOR)
&& (Type_Recipient == (STANDARD_REQUEST | INTERFACE_RECIPIENT))
) // (( ==0x06 ))&&(0x01=(0x00|0x01))
{
if (pInformation->USBwValue1 == REPORT_DESCRIPTOR)
{
CopyRoutine = CustomHID_GetReportDescriptor;
}
else if (pInformation->USBwValue1 == HID_DESCRIPTOR_TYPE)
{
CopyRoutine = CustomHID_GetHIDDescriptor;
}
} /* End of GET_DESCRIPTOR */
/*** GET_PROTOCOL, GET_REPORT, SET_REPORT ***/
else if ( (Type_Recipient == (CLASS_REQUEST | INTERFACE_RECIPIENT)) )
{
switch( RequestNo )
{
case GET_PROTOCOL:
CopyRoutine = CustomHID_GetProtocolValue;
break;
case SET_REPORT:
CopyRoutine = CustomHID_SetReport_Feature;
Request = SET_REPORT;
break;
default:
break;
}
}
if (CopyRoutine == NULL)
{
return USB_UNSUPPORT;
}
pInformation->Ctrl_Info.CopyData = CopyRoutine;
pInformation->Ctrl_Info.Usb_wOffset = 0;
(*CopyRoutine)(0);
return USB_SUCCESS;
}
If I don't change the original code：
The result of usb communication is this：c00000004 stall pid.I guess because original code not have handle "get report".My request in host by feature.
So I changed the code.
The new core:
RESULT CustomHID_Data_Setup(uint8_t RequestNo)
{
uint8_t *(*CopyRoutine)(uint16_t);
if (pInformation->USBwIndex != 0)
return USB_UNSUPPORT;
CopyRoutine = NULL;
if ((RequestNo == GET_DESCRIPTOR)
&& (Type_Recipient == (STANDARD_REQUEST | INTERFACE_RECIPIENT))
)
{
if (pInformation->USBwValue1 == REPORT_DESCRIPTOR)
{
CopyRoutine = CustomHID_GetReportDescriptor;
}
else if (pInformation->USBwValue1 == HID_DESCRIPTOR_TYPE)
{
CopyRoutine = CustomHID_GetHIDDescriptor;
}
} /* End of GET_DESCRIPTOR */
/*** GET_PROTOCOL, GET_REPORT, SET_REPORT ***/
else if ( (Type_Recipient == (CLASS_REQUEST | INTERFACE_RECIPIENT)) )
{
switch( RequestNo )
{
case GET_REPORT: //new insert
CopyRoutine = CustomHID_GetReport_Feature; //new insert
Request = GET_REPORT; //new insert
case GET_PROTOCOL:
CopyRoutine = CustomHID_GetProtocolValue;
break;
case SET_REPORT:
CopyRoutine = CustomHID_SetReport_Feature;
Request = SET_REPORT;
break;
default:
break;
}
}
if (CopyRoutine == NULL)
{
return USB_UNSUPPORT;
}
pInformation->Ctrl_Info.CopyData = CopyRoutine;
pInformation->Ctrl_Info.Usb_wOffset = 0;
(*CopyRoutine)(0);
return USB_SUCCESS;
}
add to new function:
uint8_t *CustomHID_GetReport_Feature(uint16_t Length)
{
return (uint8_t *)(&report[0]);
}
uint32_t report[]={0x01,0x01,0x02,0x03,0x04,0x03,0x02,0x64,0x64,0x00,0x00,0x00,0x00,0x04};
But the device only responded with a data 0.
I don`t know why?