Hello guys,
while trying to make usb hub work on the stm32f2xx usb stack, I met a problem. The enumeration of usb hub is working, I can get the number of hub ports, power on the port, reset the port, and the port status is ok, after reset which is
03 01 00 00 PORT_CONNECTION, PORT_ENABLE, PORT_POWER
But when I try to get the descriptor of the device attached to the port(port number is 1), there is no response to the GetDescriptor request(URB status is IDLE).
I used USBH_Modify_Channel to change the channel from address(0x04) to default address(0).
Could anyone help tell me why there is no response to the get descriptor request?
Following is the code for test purpose,
static USBH_Status USBH_HandleEnum(USB_OTG_CORE_HANDLE *pdev, USBH_HOST *phost)
{
USBH_Status Status = USBH_BUSY;
uint8_t Local_Buffer[64];
static uint8_t tag;
static uint8_t loop_num;
uint8_t *evtBuff = pdev->host.Rx_Buffer;
switch (phost->EnumState)
{
case ENUM_IDLE:
/* Get Device Desc for only 1st 8 bytes : To get EP0 MaxPacketSize */
if ( USBH_Get_DevDesc(pdev , phost, 8 ) == USBH_OK)
{
phost->Control.ep0size = phost->device_prop.Dev_Desc.bMaxPacketSize;
phost->usr_cb->PrintHubNum(phost->device_prop.Dev_Desc.bDeviceClass);
USB_OTG_BSP_mDelay(2000);
/* Issue Reset */
HCD_ResetPort(pdev);
phost->EnumState = ENUM_GET_FULL_DEV_DESC;
/* modify control channels configuration for MaxPacket size */
USBH_Modify_Channel (pdev,
phost->Control.hc_num_out,
0,
0,
0,
phost->Control.ep0size);
USBH_Modify_Channel (pdev,
phost->Control.hc_num_in,
0,
0,
0,
phost->Control.ep0size);
}
break;
case ENUM_GET_FULL_DEV_DESC:
/* Get FULL Device Desc */
if ( USBH_Get_DevDesc(pdev, phost, USB_DEVICE_DESC_SIZE)\
== USBH_OK)
{
/* user callback for device descriptor available */
phost->usr_cb->DeviceDescAvailable(&phost->device_prop.Dev_Desc);
phost->EnumState = ENUM_SET_ADDR;
}
break;
case ENUM_SET_ADDR:
/* set address */
if ( USBH_SetAddress(pdev, phost, 4) == USBH_OK)
{
phost->device_prop.address = 4;
/* user callback for device address assigned */
phost->usr_cb->DeviceAddressAssigned();
/* phost->EnumState = ENUM_GET_CFG_DESC; */
phost->EnumState = ENUM_GET_CFG_DESC;
/* modify control channels to upate device address */
USBH_Modify_Channel (pdev,
phost->Control.hc_num_in,
phost->device_prop.address,
0,
0,
0);
USBH_Modify_Channel (pdev,
phost->Control.hc_num_out,
phost->device_prop.address,
0,
0,
0);
}
break;
case ENUM_GET_CFG_DESC:
/* get standard configuration descriptor */
if ( USBH_Get_CfgDesc(pdev,
phost,
USB_CONFIGURATION_DESC_SIZE) == USBH_OK)
{
phost->EnumState = ENUM_GET_FULL_CFG_DESC;
}
break;
case ENUM_GET_FULL_CFG_DESC:
/* get FULL config descriptor (config, interface, endpoints) */
if (USBH_Get_CfgDesc(pdev,
phost,
phost->device_prop.Cfg_Desc.wTotalLength) == USBH_OK)
{
/* User callback for configuration descriptors available */
phost->usr_cb->ConfigurationDescAvailable(&phost->device_prop.Cfg_Desc,
phost->device_prop.Itf_Desc,
phost->device_prop.Ep_Desc[0]);
phost->EnumState = ENUM_SET_CONFIGURATION;
}
break;
case ENUM_SET_CONFIGURATION:
/* set configuration (default config) */
if (USBH_SetCfg(pdev,
phost,
phost->device_prop.Cfg_Desc.bConfigurationValue) == USBH_OK)
{
phost->EnumState = ENUM_GET_HUB_DESC;
}
break;
case ENUM_GET_HUB_DESC:
if (USBH_Get_HubDesc(pdev, phost, 8 ) == USBH_OK)
{
loop_num = phost->device_prop.Hub_Desc.bNbrPorts;
tag = 0;
phost->EnumState = ENUM_PWR_ON_PORTS;
}
break;
case ENUM_PWR_ON_PORTS:
//if (loop_num == 0)
if (tag == 1)
{
phost->EnumState = ENUM_DEV_HUB_TEST;
loop_num = phost->device_prop.Hub_Desc.bNbrPorts;
break;
}
if (USBH_SetPortFeature(pdev,
phost,
USB_DESC_TYPE_INTERFACE_POWER, /* power on*/
1,
//loop_num,
0) == USBH_OK)
{
tag = 1;
//loop_num--;
}
break;
case ENUM_DEV_HUB_TEST:
if (loop_num == 0)
{
tag = 0;
phost->EnumState = ENUM_DEV_HUB_CLR;
USB_OTG_BSP_mDelay(100);
break;
}
if (USBH_GetPortStatus (pdev,
phost,
loop_num,
4,
evtBuff) == USBH_OK)
{
phost->usr_cb->PrintHubNum(evtBuff[0]);
phost->usr_cb->PrintHubNum(evtBuff[1]);
phost->usr_cb->PrintHubNum(evtBuff[2]);
phost->usr_cb->PrintHubNum(evtBuff[3]);
loop_num--;
}
break;
case ENUM_DEV_HUB_CLR:
if (tag == 1)
{
if (USBH_GetPortStatus (pdev,
phost,
1, /* for test purpose */
4,
evtBuff) == USBH_OK)
{
phost->usr_cb->PrintHubNum(evtBuff[0]);
phost->usr_cb->PrintHubNum(evtBuff[1]);
phost->usr_cb->PrintHubNum(evtBuff[2]);
phost->usr_cb->PrintHubNum(evtBuff[3]);
USB_OTG_BSP_mDelay(1000);
tag = 0;
phost->EnumState = ENUM_DEV_HUB_PORT_RESET;
break;
}
}
if (tag == 0)
{
USB_OTG_BSP_mDelay(1000);
if (USBH_ClrPortFeature(pdev,
phost,
HUB_FEATURE_C_PORT_CONNECTION,
1,
0) == USBH_OK)
{
tag = 1;
USB_OTG_BSP_mDelay(1000);
}
}
break;
case ENUM_DEV_HUB_PORT_RESET:
if (tag == 1);
{
if (USBH_GetPortStatus (pdev,
phost,
1, /* for test purpose */
4,
evtBuff) == USBH_OK)
{
phost->usr_cb->PrintHubNum(evtBuff[0]);
phost->usr_cb->PrintHubNum(evtBuff[1]);
phost->usr_cb->PrintHubNum(evtBuff[2]);
phost->usr_cb->PrintHubNum(evtBuff[3]);
phost->EnumState = ENUM_DEV_HUB_PORT_CLR_RESET;
USB_OTG_BSP_mDelay(1000);
tag = 0;
break;
}
}
if (tag == 0)
{
if (USBH_SetPortFeature(pdev,
phost,
HUB_FEATURE_PORT_RESET,
1,
0) == USBH_OK)
{
USB_OTG_BSP_mDelay(100);
tag = 1;
}
}
break;
case ENUM_DEV_HUB_PORT_CLR_RESET:
if (tag == 0)
{
if (USBH_GetPortStatus (pdev,
phost,
1, /* for test purpose */
4,
evtBuff) == USBH_OK)
{
phost->usr_cb->PrintHubNum(evtBuff[0]);
phost->usr_cb->PrintHubNum(evtBuff[1]);
phost->usr_cb->PrintHubNum(evtBuff[2]);
phost->usr_cb->PrintHubNum(evtBuff[3]);
tag = 1;
}
}
if (tag == 1)
{
if (USBH_ClrPortFeature(pdev,
phost,
HUB_FEATURE_C_PORT_RESET,
1,
0) == USBH_OK)
{
tag = 2;
USB_OTG_BSP_mDelay(1000);
}
}
if (tag == 2)
{
if (USBH_GetPortStatus (pdev,
phost,
1, /* for test purpose */
4,
evtBuff) == USBH_OK)
{
phost->usr_cb->PrintHubNum(evtBuff[0]);
phost->usr_cb->PrintHubNum(evtBuff[1]);
phost->usr_cb->PrintHubNum(evtBuff[2]);
phost->usr_cb->PrintHubNum(evtBuff[3]);
tag = 0;
phost->EnumState = ENUM_DEV_GET_PORT_DESC;
phost->device_prop.address = 0;
USB_OTG_BSP_mDelay(1000);
USBH_Modify_Channel (pdev,
phost->Control.hc_num_in,
phost->device_prop.address,
0,
0,
64);
USBH_Modify_Channel (pdev,
phost->Control.hc_num_out,
phost->device_prop.address,
0,
0,
64);
}
}
break;
case ENUM_DEV_GET_PORT_DESC:
if ( USBH_Get_DevDesc(pdev , phost, 8 ) == USBH_OK)
{
phost->Control.ep0size = phost->device_prop.Dev_Desc.bMaxPacketSize;
phost->usr_cb->PrintHubNum(phost->device_prop.Dev_Desc.bDeviceClass);
USB_OTG_BSP_mDelay(2000);
phost->EnumState = ENUM_DEV_CONFIGURED;
}
break;
case ENUM_DEV_CONFIGURED:
/* user callback for enumeration done */
Status = USBH_OK;
break;
default:
break;
}
return Status;
}
Thanks.
