/** Reads and processes an attached device's Device Descriptor, to determine compatibility
*
* This routine checks to ensure that the attached device's VID and PID matches Google's for Android devices.
*
* \return An error code from the \ref AndroidHost_GetDeviceDescriptorDataCodes_t enum.
*/
uint8_t ProcessDeviceDescriptor(void)
{
USB_Descriptor_Device_t DeviceDescriptor;
/* Send the request to retrieve the device descriptor */
if (USB_Host_GetDeviceDescriptor(&DeviceDescriptor) != HOST_SENDCONTROL_Successful)
return DevControlError;
/* Validate returned data - ensure the returned data is a device descriptor */
if (DeviceDescriptor.Header.Type != DTYPE_Device)
return InvalidDeviceDataReturned;
/* Validate returned device Vendor ID against the Android ADK spec values */
/*
* EA: Second time XOOM is connected it announces itself with VID=MOTOROLA (0x22b8)
* and not VID=GOOGLE (0x18D1).
* If IncorrectAndroidDevice is returned below it will always fail
* the second time XOOM is connected without a restart.
*/
if (DeviceDescriptor.VendorID != ANDROID_VENDOR_ID)
{
//return IncorrectAndroidDevice;
return NonAccessoryModeAndroidDevice;
}
/* Check the product ID to determine if the Android device is in accessory mode */
if ((DeviceDescriptor.ProductID != ANDROID_ACCESSORY_PRODUCT_ID) &&
(DeviceDescriptor.ProductID != ANDROID_ACCESSORY_ADB_PRODUCT_ID))
{
return NonAccessoryModeAndroidDevice;
}
return AccessoryModeAndroidDevice;
}
/** Event handler for the USB_DeviceEnumerationComplete event. This indicates that a device has been successfully
* enumerated by the host and is now ready to be used by the application.
*/
void EVENT_USB_Host_DeviceEnumerationComplete(void)
{
LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
USB_Descriptor_Device_t DeviceDescriptor;
if (USB_Host_GetDeviceDescriptor(&DeviceDescriptor) != HOST_SENDCONTROL_Successful)
{
puts_P(PSTR("Error Retrieving Device Descriptor.\r\n"));
LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
return;
}
bool NeedModeSwitch;
if (!(AOA_Host_ValidateAccessoryDevice(&AndroidDevice_AOA_Interface, &DeviceDescriptor, &NeedModeSwitch)))
{
puts_P(PSTR("Not an Android device.\r\n"));
LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
return;
}
if (NeedModeSwitch)
{
puts_P(PSTR("Not in Accessory mode, switching...\r\n"));
AOA_Host_StartAccessoryMode(&AndroidDevice_AOA_Interface);
return;
}
uint16_t ConfigDescriptorSize;
uint8_t ConfigDescriptorData[512];
if (USB_Host_GetDeviceConfigDescriptor(1, &ConfigDescriptorSize, ConfigDescriptorData,
sizeof(ConfigDescriptorData)) != HOST_GETCONFIG_Successful)
{
puts_P(PSTR("Error Retrieving Configuration Descriptor.\r\n"));
LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
return;
}
if (AOA_Host_ConfigurePipes(&AndroidDevice_AOA_Interface,
ConfigDescriptorSize, ConfigDescriptorData) != AOA_ENUMERROR_NoError)
{
puts_P(PSTR("Attached Device Not a Valid Android Accessory Class Device.\r\n"));
LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
return;
}
if (USB_Host_SetDeviceConfiguration(1) != HOST_SENDCONTROL_Successful)
{
puts_P(PSTR("Error Setting Device Configuration.\r\n"));
LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
return;
}
puts_P(PSTR("Android Device Enumerated.\r\n"));
LEDs_SetAllLEDs(LEDMASK_USB_READY);
}
/** Event handler for the USB_DeviceEnumerationComplete event. This indicates that a device has been successfully
* enumerated by the host and is now ready to be used by the application.
*/
void EVENT_USB_Host_DeviceEnumerationComplete(void)
{
USB_Descriptor_Device_t DeviceDescriptor;
uint16_t ConfigDescriptorSize;
uint8_t ConfigDescriptorData[512];
printf(PSTR("\r\n* Configuring *"));
if (USB_Host_GetDeviceDescriptor(&DeviceDescriptor) != HOST_SENDCONTROL_Successful)
{
printf(PSTR("\r\nERR: Dev Desc"));
//RGB_SetColour(RGB_ALIAS_Error);
//return;
}
if (USB_Host_GetDeviceConfigDescriptor(1, &ConfigDescriptorSize, ConfigDescriptorData,
sizeof(ConfigDescriptorData)) != HOST_GETCONFIG_Successful)
{
printf(PSTR("\r\nERR: Config Desc"));
// RGB_SetColour(RGB_ALIAS_Error);
// return;
}
BluetoothAdapter_ConfigurePipes(&DeviceDescriptor, ConfigDescriptorSize, ConfigDescriptorData);
if (USB_Host_SetDeviceConfiguration(1) != HOST_SENDCONTROL_Successful)
{
printf(PSTR("\r\nERR: Set Config"));
// RGB_SetColour(RGB_ALIAS_Error);
return;
}
if (!(BluetoothAdapter_PostConfiguration()))
{
printf(PSTR("\r\nERR: Post Config"));
// RGB_SetColour(RGB_ALIAS_Error);
return;
}
printf(PSTR("\r\n* System Ready *\n"));
// RGB_SetColour(RGB_ALIAS_Ready);
}
/** Reads and processes an attached device's Device Descriptor, to determine compatibility
*
* This routine checks to ensure that the attached device's VID and PID matches Google's for Android devices.
*
* \return An error code from the \ref AndroidHost_GetDeviceDescriptorDataCodes_t enum.
*/
uint8_t ProcessDeviceDescriptor(void)
{
USB_Descriptor_Device_t DeviceDescriptor;
/* Send the request to retrieve the device descriptor */
if (USB_Host_GetDeviceDescriptor(&DeviceDescriptor) != HOST_SENDCONTROL_Successful)
return DevControlError;
/* Validate returned data - ensure the returned data is a device descriptor */
if (DeviceDescriptor.Header.Type != DTYPE_Device)
return InvalidDeviceDataReturned;
/* Check the product ID to determine if the Android device is in accessory mode */
if ((DeviceDescriptor.ProductID != ANDROID_ACCESSORY_PRODUCT_ID) &&
(DeviceDescriptor.ProductID != ANDROID_ACCESSORY_ADB_PRODUCT_ID))
{
return NonAccessoryModeAndroidDevice;
}
return AccessoryModeAndroidDevice;
}
uint8_t ProcessDeviceDescriptor(void)
{
USB_Descriptor_Device_t DeviceDescriptor;
/* Send the request to retrieve the device descriptor */
if (USB_Host_GetDeviceDescriptor(&DeviceDescriptor) != HOST_SENDCONTROL_Successful)
return ControlErrorDuringDeviceRead;
/* Validate returned data - ensure the returned data is a device descriptor */
if (DeviceDescriptor.Header.Type != DTYPE_Device)
return InvalidDeviceDataReturned;
/* Validate returned device Class, SubClass and Protocol values against the Bluetooth spec values */
if ((DeviceDescriptor.Class != BLUETOOTH_DEVICE_CLASS) ||
(DeviceDescriptor.SubClass != BLUETOOTH_DEVICE_SUBCLASS) ||
(DeviceDescriptor.Protocol != BLUETOOTH_DEVICE_PROTOCOL))
{
return IncorrectDevice;
}
return SuccessfulDeviceRead;
}
/** Reads and processes an attached device's Device Descriptor, to determine compatibility
*
* This routine checks to ensure that the attached device's VID and PID matches Google's for Android devices.
*
* \return An error code from the \ref BluetoothHost_GetDeviceDescriptorDataCodes_t enum.
*/
uint8_t ProcessDeviceDescriptor(void)
{
USB_Descriptor_Device_t DeviceDescriptor;
/* Send the request to retrieve the device descriptor */
if (USB_Host_GetDeviceDescriptor(&DeviceDescriptor) != HOST_SENDCONTROL_Successful)
return DevControlError;
/* Validate returned data - ensure the returned data is a device descriptor */
if (DeviceDescriptor.Header.Type != DTYPE_Device)
return InvalidDeviceDataReturned;
/* Validate returned device Class, SubClass and Protocol values against the Bluetooth spec values */
if (DeviceDescriptor.VendorID != ANDROID_VENDOR_ID)
return IncorrectAndroidDevice;
if ((DeviceDescriptor.ProductID != ANDROID_ACCESSORY_PRODUCT_ID) ||
(DeviceDescriptor.ProductID != ANDROID_ACCESSORY_ADB_PRODUCT_ID))
{
return NonAccessoryModeAndroidDevice;
}
return AccessoryModeAndroidDevice;
}
