Hello all,
For a first time i am trying to implement usb vendor device. I am using stm32 standard peripheral library. Basically CDC class, having modified the interface recognition part. Can i have some direction what i am missing to implement. Here are some debug logs.
> USB Host library started.
USB OTG HS HID Host
> USB Host library started.
> Device Attached
> Full speed device detected
VID : 1234h
PID : 0101h
Device address assigned
Manufacturer : PAX
Product : IM20
Serial Number : N/A
> Enumeration completed
I think this part is ok but still device does not want to speak with me. I used Wireshard to listen communication with PC and after this steps there is only one request step.
Req 1, with value 0x300- i send this and recive status ok.(i dont know what is that request, just send it because i see it on Wireshark listener). After i send request i am trying to send bulk packet and recive answer but nothing comes in. Here is my Init interface function and state machine for send/receive.
static USBH_Status VS_InterfaceInit ( USB_OTG_CORE_HANDLE *pdev,
void *phost)
{
USBH_HOST *pphost = phost;
USBH_Status status = USBH_FAIL ;
if((pphost->device_prop.Itf_Desc[0].bInterfaceClass == VENDOR_SPECIFIC) )
{
if(pphost->device_prop.Ep_Desc[0][0].bEndpointAddress & 0x80)
{
VS_Machine.VSBulkInEp = (pphost->device_prop.Ep_Desc[0][0].bEndpointAddress);
VS_Machine.VSBulkInEpSize = pphost->device_prop.Ep_Desc[0][0].wMaxPacketSize;
}
else
{
VS_Machine.VSBulkOutEp = (pphost->device_prop.Ep_Desc[0][0].bEndpointAddress);
VS_Machine.VSBulkOutEpSize = pphost->device_prop.Ep_Desc[0] [0].wMaxPacketSize;
}
if(pphost->device_prop.Ep_Desc[0][1].bEndpointAddress & 0x80)
{
VS_Machine.VSBulkInEp = (pphost->device_prop.Ep_Desc[0][1].bEndpointAddress);
VS_Machine.VSBulkInEpSize = pphost->device_prop.Ep_Desc[0][1].wMaxPacketSize;
}
else
{
VS_Machine.VSBulkOutEp = (pphost->device_prop.Ep_Desc[0][1].bEndpointAddress);
VS_Machine.VSBulkOutEpSize = pphost->device_prop.Ep_Desc[0][1].wMaxPacketSize;
}
VS_Machine.hc_num_in = USBH_Alloc_Channel(pdev,
VS_Machine.VSBulkInEp);
VS_Machine.hc_num_out = USBH_Alloc_Channel(pdev,
VS_Machine.VSBulkOutEp);
/* Open the new channels */
USBH_Open_Channel (pdev,
VS_Machine.hc_num_out,
pphost->device_prop.address,
pphost->device_prop.speed,
EP_TYPE_BULK,
VS_Machine.VSBulkOutEpSize);
USBH_Open_Channel (pdev,
VS_Machine.hc_num_in,
pphost->device_prop.address,
pphost->device_prop.speed,
EP_TYPE_BULK,
VS_Machine.VSBulkInEpSize);
status = USBH_OK;
}
VS_RxParam.VSState = VS_READ_DATA;
/*Initialize the class specific request with "GET_LINE_CODING"*/
VS_ReqState = VS_GET_LINE_CODING_RQUEST ;
return status;
}
void vs_send_buffer(BYTE *buf, DWORD size)
{
if(VS_TxStruct.tx_state == VS_IDLE)
{
VS_TxStruct.tx_buf = buf;
VS_TxStruct.tx_length = size;
VS_TxStruct.tx_state = VS_SEND_DATA_START;
}
}
void VS_ProcessTransmission(USB_OTG_CORE_HANDLE *pdev, USBH_HOST *phost)
{
// static uint32_t len ;
static uint32_t remainingDataLength;
static uint8_t *datapointer , *datapointer_prev;
URB_STATE URB_StatusTx = URB_IDLE;
//
URB_StatusTx = HCD_GetURB_State(pdev , VS_Machine.hc_num_out);
switch(VS_TxStruct.tx_state)
{
case VS_IDLE :
break;
case VS_READ_DATA :
break;
case VS_SEND_DATA_START:
if(( URB_StatusTx == URB_DONE ) || (URB_StatusTx == URB_IDLE))
{
datapointer = VS_TxStruct.tx_buf;
remainingDataLength = VS_TxStruct.tx_length;
VS_TxStruct.tx_state = VS_SEND_DATA;
}
break;
case VS_SEND_DATA :
if(( URB_StatusTx == URB_DONE ) || (URB_StatusTx == URB_IDLE))
{
if(remainingDataLength > VS_Machine.VSBulkOutEpSize)
{
USBH_BulkSendData (pdev,
datapointer,
VS_Machine.VSBulkOutEpSize ,
VS_Machine.hc_num_out);
datapointer = datapointer + VS_Machine.VSBulkOutEpSize;
remainingDataLength = remainingDataLength - VS_Machine.VSBulkOutEpSize;
VS_TxStruct.tx_state = VS_DATA_SENT;
// xfer_error_count=0;
}
else if ( remainingDataLength == 0)
{
/* If value was 0, and successful transfer, then change the state */
VS_TxStruct.tx_state = VS_DATA_SENT;
}
else
{
USBH_BulkSendData (pdev,
datapointer,
remainingDataLength ,
VS_Machine.hc_num_out);
remainingDataLength = 0; /* Reset this value and keep in same state */
VS_TxStruct.tx_state = VS_DATA_SENT;
}
}
break;
case VS_DATA_SENT :
/*Check the status done for transmssion*/
if(URB_StatusTx == URB_DONE )
{
if(remainingDataLength)
{
VS_TxStruct.tx_state = VS_SEND_DATA;
}else
{
VS_TxStruct.tx_state = VS_IDLE;
}
}
break;
case VS_BUSY :
break;
case VS_GET_DATA :
break;
case VS_POLL :
break;
case VS_CTRL_STATE :
break;
default:
break;
}
}
static void VS_ProcessReception(USB_OTG_CORE_HANDLE *pdev, USBH_HOST *phost)
{
URB_STATE URB_Status = URB_IDLE;
// if(RX_Enabled == 1)
// {
URB_Status = HCD_GetURB_State(pdev , VS_Machine.hc_num_in);
switch(VS_RxParam.VSState)
{
case VS_READ_DATA:
if((URB_Status == URB_IDLE))
{
USBH_BulkReceiveData(pdev,
receive_buffer,
VS_Machine.VSBulkInEpSize,
VS_Machine.hc_num_in);
}
VS_RxParam.VSState = VS_GET_DATA;
break;
case VS_GET_DATA:
if((URB_Status == URB_DONE))
{
tete++;
}
break;
}
}
All protocol commands work when i am using the UART communication.
