Remove serial driver use from the AVRISP project now that it is no longer needed.

[pub/USBasp.git] / Demos / Host / ClassDriver / StillImageHost / StillImageHost.c

diff --git a/Demos/Host/ClassDriver/StillImageHost/StillImageHost.c b/Demos/Host/ClassDriver/StillImageHost/StillImageHost.c
index 318e257..fb3a784 100644 (file)
--- a/Demos/Host/ClassDriver/StillImageHost/StillImageHost.c
+++ b/Demos/Host/ClassDriver/StillImageHost/StillImageHost.c
@@ -33,24 +33,115 @@
  *  Main source file for the StillImageHost demo. This file contains the main tasks of\r
  *  the demo and is responsible for the initial application hardware configuration.\r
  */\r
  *  Main source file for the StillImageHost demo. This file contains the main tasks of\r
  *  the demo and is responsible for the initial application hardware configuration.\r
  */\r

-\r
+ \r

 #include "StillImageHost.h"\r
 \r
 #include "StillImageHost.h"\r
 \r

+/** LUFA Still Image Class driver interface configuration and state information. This structure is\r
+ *  passed to all Still Image Class driver functions, so that multiple instances of the same class\r
+ *  within a device can be differentiated from one another.\r
+ */\r
+USB_ClassInfo_SI_Host_t DigitalCamera_SI_Interface =\r
+       {\r
+               .Config =\r
+                       {\r
+                               .DataINPipeNumber       = 1,\r
+                               .DataINPipeDoubleBank   = false,\r
+                               \r
+                               .DataOUTPipeNumber      = 2,\r
+                               .DataOUTPipeDoubleBank  = false,\r
+                               \r
+                               .EventsPipeNumber       = 3,\r
+                               .EventsPipeDoubleBank   = false,\r
+                       },\r
+       };\r
+\r

 /** Main program entry point. This routine configures the hardware required by the application, then\r
 /** Main program entry point. This routine configures the hardware required by the application, then\r

- *  starts the scheduler to run the application tasks.\r
+ *  enters a loop to run the application tasks in sequence.\r

  */\r
 int main(void)\r
 {\r
        SetupHardware();\r
 \r
  */\r
 int main(void)\r
 {\r
        SetupHardware();\r
 \r

-       puts_P(PSTR(ESC_RESET ESC_BG_WHITE ESC_INVERSE_ON ESC_ERASE_DISPLAY\r
-              "Still Image Host Demo running.\r\n" ESC_INVERSE_OFF));\r
+       puts_P(PSTR(ESC_FG_CYAN "Still Image Host Demo running.\r\n" ESC_FG_WHITE));\r

 \r
        LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);\r
 \r
        for (;;)\r
        {\r
 \r
        LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);\r
 \r
        for (;;)\r
        {\r

-               StillImage_Task();\r
+               switch (USB_HostState)\r
+               {\r
+                       case HOST_STATE_Addressed:\r
+                               LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);\r
+                       \r
+                               uint16_t ConfigDescriptorSize;\r
+                               uint8_t  ConfigDescriptorData[512];\r
+\r
+                               if (USB_Host_GetDeviceConfigDescriptor(1, &ConfigDescriptorSize, ConfigDescriptorData,\r
+                                                                      sizeof(ConfigDescriptorData)) != HOST_GETCONFIG_Successful)\r
+                               {\r
+                                       printf("Error Retrieving Configuration Descriptor.\r\n");\r
+                                       LEDs_SetAllLEDs(LEDMASK_USB_ERROR);\r
+                                       USB_HostState = HOST_STATE_WaitForDeviceRemoval;\r
+                                       break;\r
+                               }\r
+\r
+                               if (SImage_Host_ConfigurePipes(&DigitalCamera_SI_Interface,\r
+                                                              ConfigDescriptorSize, ConfigDescriptorData) != SI_ENUMERROR_NoError)\r
+                               {\r
+                                       printf("Attached Device Not a Valid CDC Class Device.\r\n");\r
+                                       LEDs_SetAllLEDs(LEDMASK_USB_ERROR);\r
+                                       USB_HostState = HOST_STATE_WaitForDeviceRemoval;\r
+                                       break;\r
+                               }\r
+                               \r
+                               if (USB_Host_SetDeviceConfiguration(1) != HOST_SENDCONTROL_Successful)\r
+                               {\r
+                                       printf("Error Setting Device Configuration.\r\n");\r
+                                       LEDs_SetAllLEDs(LEDMASK_USB_ERROR);\r
+                                       USB_HostState = HOST_STATE_WaitForDeviceRemoval;\r
+                                       break;\r
+                               }\r
+                               \r
+                               printf("Still Image Device Enumerated.\r\n");\r
+                               USB_HostState = HOST_STATE_Configured;\r
+                               break;\r
+                       case HOST_STATE_Configured:\r
+                               printf("Opening Session...\r\n");\r
+                               \r
+                               if (SImage_Host_OpenSession(&DigitalCamera_SI_Interface) != PIPE_RWSTREAM_NoError)\r
+                               {\r
+                                       printf("Could not open PIMA session.\r\n");\r
+                                       USB_HostState = HOST_STATE_WaitForDeviceRemoval;\r
+                                       break;\r
+                               }\r
+\r
+                               printf("Turning off Device...\r\n");\r
+\r
+                               SImage_Host_SendCommand(&DigitalCamera_SI_Interface, 0x1013, 0, NULL);\r
+                               if (SImage_Host_ReceiveResponse(&DigitalCamera_SI_Interface))\r
+                               {\r
+                                       printf("Could not turn off device.\r\n");\r
+                                       USB_HostState = HOST_STATE_WaitForDeviceRemoval;\r
+                                       break;                                  \r
+                               }\r
+\r
+                               printf("Device Off.\r\n");\r
+\r
+                               printf("Closing Session...\r\n");\r
+\r
+                               if (SImage_Host_CloseSession(&DigitalCamera_SI_Interface) != PIPE_RWSTREAM_NoError)\r
+                               {\r
+                                       printf("Could not close PIMA session.\r\n");\r
+                                       USB_HostState = HOST_STATE_WaitForDeviceRemoval;\r
+                                       break;\r
+                               }\r
+                               \r
+                               LEDs_SetAllLEDs(LEDMASK_USB_READY);\r
+                               USB_HostState = HOST_STATE_WaitForDeviceRemoval;\r
+                               break;\r
+               }\r
+       \r
+               SImage_Host_USBTask(&DigitalCamera_SI_Interface);\r

                USB_USBTask();\r
        }\r
 }\r
                USB_USBTask();\r
        }\r
 }\r


@@ -62,9 +153,8 @@ void SetupHardware(void)
        MCUSR &= ~(1 << WDRF);\r
        wdt_disable();\r
 \r
        MCUSR &= ~(1 << WDRF);\r
        wdt_disable();\r
 \r

-       /* Disable Clock Division */\r
-       CLKPR = (1 << CLKPCE);\r
-       CLKPR = 0;\r
+       /* Disable clock division */\r
+       clock_prescale_set(clock_div_1);\r

 \r
        /* Hardware Initialization */\r
        SerialStream_Init(9600, false);\r
 \r
        /* Hardware Initialization */\r
        SerialStream_Init(9600, false);\r


@@ -75,7 +165,7 @@ void SetupHardware(void)
 /** Event handler for the USB_DeviceAttached event. This indicates that a device has been attached to the host, and\r
  *  starts the library USB task to begin the enumeration and USB management process.\r
  */\r
 /** Event handler for the USB_DeviceAttached event. This indicates that a device has been attached to the host, and\r
  *  starts the library USB task to begin the enumeration and USB management process.\r
  */\r

-void EVENT_USB_DeviceAttached(void)\r
+void EVENT_USB_Host_DeviceAttached(void)\r

 {\r
        puts_P(PSTR("Device Attached.\r\n"));\r
        LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);\r
 {\r
        puts_P(PSTR("Device Attached.\r\n"));\r
        LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);\r


@@ -84,7 +174,7 @@ void EVENT_USB_DeviceAttached(void)
 /** Event handler for the USB_DeviceUnattached event. This indicates that a device has been removed from the host, and\r
  *  stops the library USB task management process.\r
  */\r
 /** Event handler for the USB_DeviceUnattached event. This indicates that a device has been removed from the host, and\r
  *  stops the library USB task management process.\r
  */\r

-void EVENT_USB_DeviceUnattached(void)\r
+void EVENT_USB_Host_DeviceUnattached(void)\r

 {\r
        puts_P(PSTR("\r\nDevice Unattached.\r\n"));\r
        LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);\r
 {\r
        puts_P(PSTR("\r\nDevice Unattached.\r\n"));\r
        LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);\r


@@ -93,18 +183,18 @@ void EVENT_USB_DeviceUnattached(void)
 /** Event handler for the USB_DeviceEnumerationComplete event. This indicates that a device has been successfully\r
  *  enumerated by the host and is now ready to be used by the application.\r
  */\r
 /** Event handler for the USB_DeviceEnumerationComplete event. This indicates that a device has been successfully\r
  *  enumerated by the host and is now ready to be used by the application.\r
  */\r

-void EVENT_USB_DeviceEnumerationComplete(void)\r
+void EVENT_USB_Host_DeviceEnumerationComplete(void)\r

 {\r
        LEDs_SetAllLEDs(LEDMASK_USB_READY);\r
 }\r
 \r
 /** Event handler for the USB_HostError event. This indicates that a hardware error occurred while in host mode. */\r
 {\r
        LEDs_SetAllLEDs(LEDMASK_USB_READY);\r
 }\r
 \r
 /** Event handler for the USB_HostError event. This indicates that a hardware error occurred while in host mode. */\r

-void EVENT_USB_HostError(const uint8_t ErrorCode)\r
+void EVENT_USB_Host_HostError(const uint8_t ErrorCode)\r

 {\r
        USB_ShutDown();\r
 \r
 {\r
        USB_ShutDown();\r
 \r

-       puts_P(PSTR(ESC_BG_RED "Host Mode Error\r\n"));\r
-       printf_P(PSTR(" -- Error Code %d\r\n"), ErrorCode);\r
+       printf_P(PSTR(ESC_FG_RED "Host Mode Error\r\n"\r
+                                " -- Error Code %d\r\n" ESC_FG_WHITE), ErrorCode);\r

 \r
        LEDs_SetAllLEDs(LEDMASK_USB_ERROR);\r
        for(;;);\r
 \r
        LEDs_SetAllLEDs(LEDMASK_USB_ERROR);\r
        for(;;);\r


@@ -113,270 +203,12 @@ void EVENT_USB_HostError(const uint8_t ErrorCode)
 /** Event handler for the USB_DeviceEnumerationFailed event. This indicates that a problem occurred while\r
  *  enumerating an attached USB device.\r
  */\r
 /** Event handler for the USB_DeviceEnumerationFailed event. This indicates that a problem occurred while\r
  *  enumerating an attached USB device.\r
  */\r

-void EVENT_USB_DeviceEnumerationFailed(const uint8_t ErrorCode, const uint8_t SubErrorCode)\r
+void EVENT_USB_Host_DeviceEnumerationFailed(const uint8_t ErrorCode, const uint8_t SubErrorCode)\r

 {\r
 {\r

-       puts_P(PSTR(ESC_BG_RED "Dev Enum Error\r\n"));\r
-       printf_P(PSTR(" -- Error Code %d\r\n"), ErrorCode);\r
-       printf_P(PSTR(" -- Sub Error Code %d\r\n"), SubErrorCode);\r
-       printf_P(PSTR(" -- In State %d\r\n"), USB_HostState);\r
+       printf_P(PSTR(ESC_FG_RED "Dev Enum Error\r\n"\r
+                                " -- Error Code %d\r\n"\r
+                                " -- Sub Error Code %d\r\n"\r
+                                " -- In State %d\r\n" ESC_FG_WHITE), ErrorCode, SubErrorCode, USB_HostState);\r

        \r
        LEDs_SetAllLEDs(LEDMASK_USB_ERROR);\r
 }\r
        \r
        LEDs_SetAllLEDs(LEDMASK_USB_ERROR);\r
 }\r

-\r
-/** Task to set the configuration of the attached device after it has been enumerated, and to print device information\r
- *  through the serial port.\r
- */\r
-void StillImage_Task(void)\r
-{\r
-       uint8_t ErrorCode;\r
-\r
-       switch (USB_HostState)\r
-       {\r
-               case HOST_STATE_Addressed:\r
-                       /* Standard request to set the device configuration to configuration 1 */\r
-                       USB_ControlRequest = (USB_Request_Header_t)\r
-                               {\r
-                                       .bmRequestType = (REQDIR_HOSTTODEVICE | REQTYPE_STANDARD | REQREC_DEVICE),\r
-                                       .bRequest      = REQ_SetConfiguration,\r
-                                       .wValue        = 1,\r
-                                       .wIndex        = 0,\r
-                                       .wLength       = 0,\r
-                               };\r
-\r
-                       /* Select the control pipe for the request transfer */\r
-                       Pipe_SelectPipe(PIPE_CONTROLPIPE);\r
-\r
-                       /* Send the request, display error and wait for device detach if request fails */\r
-                       if (USB_Host_SendControlRequest(NULL) != HOST_SENDCONTROL_Successful)\r
-                       {\r
-                               puts_P(PSTR("Control error.\r\n"));\r
-\r
-                               /* Indicate error via status LEDs */\r
-                               LEDs_SetAllLEDs(LEDMASK_USB_ERROR);\r
-\r
-                               /* Wait until USB device disconnected */\r
-                               while (USB_IsConnected);\r
-                               break;\r
-                       }\r
-                               \r
-                       USB_HostState = HOST_STATE_Configured;\r
-                       break;\r
-               case HOST_STATE_Configured:\r
-                       puts_P(PSTR("Getting Config Data.\r\n"));\r
-               \r
-                       /* Get and process the configuration descriptor data */\r
-                       if ((ErrorCode = ProcessConfigurationDescriptor()) != SuccessfulConfigRead)\r
-                       {\r
-                               if (ErrorCode == ControlError)\r
-                                 puts_P(PSTR("Control Error (Get Configuration).\r\n"));\r
-                               else\r
-                                 puts_P(PSTR("Invalid Device.\r\n"));\r
-\r
-                               printf_P(PSTR(" -- Error Code: %d\r\n"), ErrorCode);\r
-                               \r
-                               /* Indicate error via status LEDs */\r
-                               LEDs_SetAllLEDs(LEDMASK_USB_ERROR);\r
-\r
-                               /* Wait until USB device disconnected */\r
-                               while (USB_IsConnected);\r
-                               break;\r
-                       }\r
-\r
-                       puts_P(PSTR("Still Image Device Enumerated.\r\n"));\r
-                               \r
-                       USB_HostState = HOST_STATE_Ready;\r
-                       break;\r
-               case HOST_STATE_Ready:\r
-                       /* Indicate device busy via the status LEDs */\r
-                       LEDs_SetAllLEDs(LEDMASK_USB_BUSY);\r
-                       \r
-                       puts_P(PSTR("Retrieving Device Info...\r\n"));\r
-                       \r
-                       PIMA_SendBlock = (PIMA_Container_t)\r
-                               {\r
-                                       .DataLength    = PIMA_COMMAND_SIZE(0),\r
-                                       .Type          = CType_CommandBlock,\r
-                                       .Code          = PIMA_OPERATION_GETDEVICEINFO,\r
-                                       .TransactionID = 0x00000000,\r
-                                       .Params        = {},\r
-                               };\r
-                       \r
-                       /* Send the GETDEVICEINFO block */\r
-                       SImage_SendBlockHeader();\r
-                       \r
-                       /* Receive the response data block */\r
-                       if ((ErrorCode = SImage_RecieveBlockHeader()) != PIPE_RWSTREAM_NoError)\r
-                       {\r
-                               ShowCommandError(ErrorCode, false);\r
-                               break;\r
-                       }\r
-                       \r
-                       /* Calculate the size of the returned device info data structure */\r
-                       uint16_t DeviceInfoSize = (PIMA_ReceivedBlock.DataLength - PIMA_COMMAND_SIZE(0));\r
-                       \r
-                       /* Create a buffer large enough to hold the entire device info */\r
-                       uint8_t DeviceInfo[DeviceInfoSize];\r
-\r
-                       /* Read in the data block data (containing device info) */\r
-                       SImage_ReadData(DeviceInfo, DeviceInfoSize);\r
-                       \r
-                       /* Once all the data has been read, the pipe must be cleared before the response can be sent */\r
-                       Pipe_ClearIN();\r
-                       \r
-                       /* Create a pointer for walking through the info dataset */\r
-                       uint8_t* DeviceInfoPos = DeviceInfo;\r
-                       \r
-                       /* Skip over the data before the unicode device information strings */\r
-                       DeviceInfoPos += 8;                                      // Skip to VendorExtensionDesc String\r
-                       DeviceInfoPos += ((*DeviceInfoPos << 1) + 1);            // Skip over VendorExtensionDesc String\r
-                       DeviceInfoPos += 2;                                      // Skip over FunctionalMode\r
-                       DeviceInfoPos += (4 + (*(uint32_t*)DeviceInfoPos << 1)); // Skip over OperationCode Array\r
-                       DeviceInfoPos += (4 + (*(uint32_t*)DeviceInfoPos << 1)); // Skip over EventCode Array\r
-                       DeviceInfoPos += (4 + (*(uint32_t*)DeviceInfoPos << 1)); // Skip over DevicePropCode Array\r
-                       DeviceInfoPos += (4 + (*(uint32_t*)DeviceInfoPos << 1)); // Skip over ObjectFormatCode Array\r
-                       DeviceInfoPos += (4 + (*(uint32_t*)DeviceInfoPos << 1)); // Skip over ObjectFormatCode Array\r
-                       \r
-                       /* Extract and convert the Manufacturer Unicode string to ASCII and print it through the USART */\r
-                       char Manufacturer[*DeviceInfoPos];\r
-                       UnicodeToASCII(DeviceInfoPos, Manufacturer);\r
-                       printf_P(PSTR("   Manufacturer: %s\r\n"), Manufacturer);\r
-\r
-                       DeviceInfoPos += ((*DeviceInfoPos << 1) + 1);            // Skip over Manufacturer String\r
-\r
-                       /* Extract and convert the Model Unicode string to ASCII and print it through the USART */\r
-                       char Model[*DeviceInfoPos];\r
-                       UnicodeToASCII(DeviceInfoPos, Model);\r
-                       printf_P(PSTR("   Model: %s\r\n"), Model);\r
-\r
-                       DeviceInfoPos += ((*DeviceInfoPos << 1) + 1);            // Skip over Model String\r
-\r
-                       /* Extract and convert the Device Version Unicode string to ASCII and print it through the USART */\r
-                       char DeviceVersion[*DeviceInfoPos];\r
-                       UnicodeToASCII(DeviceInfoPos, DeviceVersion);\r
-                       printf_P(PSTR("   Device Version: %s\r\n"), DeviceVersion);\r
-\r
-                       /* Receive the final response block from the device */\r
-                       if ((ErrorCode = SImage_RecieveBlockHeader()) != PIPE_RWSTREAM_NoError)\r
-                       {\r
-                               ShowCommandError(ErrorCode, false);\r
-                               break;\r
-                       }\r
-                       \r
-                       /* Verify that the command completed successfully */\r
-                       if ((PIMA_ReceivedBlock.Type != CType_ResponseBlock) || (PIMA_ReceivedBlock.Code != PIMA_RESPONSE_OK))\r
-                       {\r
-                               ShowCommandError(PIMA_ReceivedBlock.Code, true);\r
-                               break;\r
-                       }\r
-                       \r
-                       puts_P(PSTR("Opening Session...\r\n"));\r
-                       \r
-                       PIMA_SendBlock = (PIMA_Container_t)\r
-                               {\r
-                                       .DataLength    = PIMA_COMMAND_SIZE(1),\r
-                                       .Type          = CType_CommandBlock,\r
-                                       .Code          = PIMA_OPERATION_OPENSESSION,\r
-                                       .TransactionID = 0x00000000,\r
-                                       .Params        = {0x00000001},\r
-                               };\r
-                       \r
-                       /* Send the OPENSESSION block, open a session with an ID of 0x0001 */\r
-                       SImage_SendBlockHeader();\r
-                       \r
-                       /* Receive the response block from the device */\r
-                       if ((ErrorCode = SImage_RecieveBlockHeader()) != PIPE_RWSTREAM_NoError)\r
-                       {\r
-                               ShowCommandError(ErrorCode, false);\r
-                               break;\r
-                       }\r
-                       \r
-                       /* Verify that the command completed successfully */\r
-                       if ((PIMA_ReceivedBlock.Type != CType_ResponseBlock) || (PIMA_ReceivedBlock.Code != PIMA_RESPONSE_OK))\r
-                       {\r
-                               ShowCommandError(PIMA_ReceivedBlock.Code, true);\r
-                               break;\r
-                       }\r
-\r
-                       puts_P(PSTR("Closing Session...\r\n"));\r
-\r
-                       PIMA_SendBlock = (PIMA_Container_t)\r
-                               {\r
-                                       .DataLength    = PIMA_COMMAND_SIZE(1),\r
-                                       .Type          = CType_CommandBlock,\r
-                                       .Code          = PIMA_OPERATION_CLOSESESSION,\r
-                                       .TransactionID = 0x00000001,\r
-                                       .Params        = {0x00000001},\r
-                               };\r
-                       \r
-                       /* Send the CLOSESESSION block, close the session with an ID of 0x0001 */\r
-                       SImage_SendBlockHeader();\r
-                       \r
-                       /* Receive the response block from the device */\r
-                       if ((ErrorCode = SImage_RecieveBlockHeader()) != PIPE_RWSTREAM_NoError)\r
-                       {\r
-                               ShowCommandError(ErrorCode, false);\r
-                               break;\r
-                       }\r
-\r
-                       /* Verify that the command completed successfully */\r
-                       if ((PIMA_ReceivedBlock.Type != CType_ResponseBlock) || (PIMA_ReceivedBlock.Code != PIMA_RESPONSE_OK))\r
-                       {\r
-                               ShowCommandError(PIMA_ReceivedBlock.Code, true);\r
-                               break;\r
-                       }\r
-\r
-                       puts_P(PSTR("Done.\r\n"));\r
-\r
-                       /* Indicate device no longer busy */\r
-                       LEDs_SetAllLEDs(LEDMASK_USB_READY);\r
-                       \r
-                       /* Wait until USB device disconnected */\r
-                       while (USB_IsConnected);\r
-                       \r
-                       break;\r
-       }\r
-}\r
-\r
-/** Function to convert a given Unicode encoded string to ASCII. This function will only work correctly on Unicode\r
- *  strings which contain ASCII printable characters only.\r
- *\r
- *  \param UnicodeString  Pointer to a Unicode encoded input string\r
- *  \param Buffer         Pointer to a buffer where the converted ASCII string should be stored\r
- */\r
-void UnicodeToASCII(uint8_t* UnicodeString, char* Buffer)\r
-{\r
-       /* Get the number of characters in the string, skip to the start of the string data */\r
-       uint8_t CharactersRemaining = *(UnicodeString++);\r
-       \r
-       /* Loop through the entire unicode string */\r
-       while (CharactersRemaining--)\r
-       {\r
-               /* Load in the next unicode character (only the lower byte, only Unicode coded ASCII supported) */\r
-               *(Buffer++) = *UnicodeString;\r
-               \r
-               /* Jump to the next unicode character */\r
-               UnicodeString += 2;\r
-       }\r
-       \r
-       /* Null terminate the string */\r
-       *Buffer = 0;\r
-}\r
-\r
-/** Displays a PIMA command error via the device's serial port.\r
- *\r
- *  \param ErrorCode          Error code of the function which failed to complete successfully\r
- *  \param ResponseCodeError  Indicates if the error is due to a command failed indication from the device, or a communication failure\r
- */\r
-void ShowCommandError(uint8_t ErrorCode, bool ResponseCodeError)\r
-{\r
-       char* FailureType = ((ResponseCodeError) ? PSTR("Response Code != OK") : PSTR("Transaction Fail"));\r
-\r
-       printf_P(PSTR(ESC_BG_RED "Command Error (%S).\r\n"), FailureType);\r
-       printf_P(PSTR(" -- Error Code %d\r\n"), ErrorCode);\r
-                       \r
-       /* Indicate error via status LEDs */\r
-       LEDs_SetAllLEDs(LEDMASK_USB_ERROR);\r
-                               \r
-       /* Wait until USB device disconnected */\r
-       while (USB_IsConnected);\r
-}\r