Make the StandaloneProgrammer project seamlessly read out drive contents from either an attached FAT formatted drive when in host mode, or the onboard FAT formatted dataflash when in device mode.

Demos/Host/ClassDriver/MassStorageHost/MassStorageHost.c

@@ -84,7 +84,7 @@ int main(void)
 				}
 
 				if (MS_Host_ConfigurePipes(&FlashDisk_MS_Interface,
-				                            ConfigDescriptorSize, ConfigDescriptorData) != MS_ENUMERROR_NoError)
+				                           ConfigDescriptorSize, ConfigDescriptorData) != MS_ENUMERROR_NoError)
 				{
 					printf("Attached Device Not a Valid Mass Storage Device.\r\n");
 					LEDs_SetAllLEDs(LEDMASK_USB_ERROR);

Projects/Incomplete/StandaloneProgrammer/DiskDevice.c

@@ -77,8 +77,6 @@ void EVENT_USB_Device_ConfigurationChanged(void)
 
 	if (!(MS_Device_ConfigureEndpoints(&DiskDevice_MS_Interface)))
 	  LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
-	
-	pf_mount(&DiskFATState);
 }
 
 /** Event handler for the library USB Unhandled Control Request event. */

Projects/Incomplete/StandaloneProgrammer/DiskHost.c

@@ -59,16 +59,14 @@ void DiskHost_USBTask(void)
 		if (USB_Host_GetDeviceConfigDescriptor(1, &ConfigDescriptorSize, ConfigDescriptorData,
 											   sizeof(ConfigDescriptorData)) != HOST_GETCONFIG_Successful)
 		{
-			printf("ERROR - GetConfig\r\n");
 			LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 			USB_HostState = HOST_STATE_WaitForDeviceRemoval;
 			return;
 		}
 
 		if (MS_Host_ConfigurePipes(&DiskHost_MS_Interface,
-									ConfigDescriptorSize, ConfigDescriptorData) != MS_ENUMERROR_NoError)
+		                           ConfigDescriptorSize, ConfigDescriptorData) != MS_ENUMERROR_NoError)
 		{
-			printf("ERROR - Pipes\r\n");
 			LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 			USB_HostState = HOST_STATE_WaitForDeviceRemoval;
 			return;
@@ -76,16 +74,16 @@ void DiskHost_USBTask(void)
 		
 		if (USB_Host_SetDeviceConfiguration(1) != HOST_SENDCONTROL_Successful)
 		{
-			printf("ERROR - SetConfig\r\n");
 			LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 			USB_HostState = HOST_STATE_WaitForDeviceRemoval;
 			return;
 		}
 		
+		USB_HostState = HOST_STATE_Configured;
+		
 		uint8_t MaxLUNIndex;
 		if (MS_Host_GetMaxLUN(&DiskHost_MS_Interface, &MaxLUNIndex))
 		{
-			printf("ERROR - MaxLUN\r\n");
 			LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 			USB_HostState = HOST_STATE_WaitForDeviceRemoval;
 			return;
@@ -93,7 +91,6 @@ void DiskHost_USBTask(void)
 		
 		if (MS_Host_ResetMSInterface(&DiskHost_MS_Interface))
 		{
-			printf("ERROR - ResetMS\r\n");
 			LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 			USB_HostState = HOST_STATE_WaitForDeviceRemoval;
 			return;
@@ -102,7 +99,6 @@ void DiskHost_USBTask(void)
 		SCSI_Request_Sense_Response_t SenseData;
 		if (MS_Host_RequestSense(&DiskHost_MS_Interface, 0, &SenseData) != 0)
 		{
-			printf("ERROR - Sense\r\n");
 			LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 			USB_HostState = HOST_STATE_WaitForDeviceRemoval;
 			return;
@@ -111,7 +107,6 @@ void DiskHost_USBTask(void)
 		pf_mount(&DiskFATState);
 		
 		LEDs_SetAllLEDs(LEDMASK_USB_READY);
-		USB_HostState = HOST_STATE_Configured;
 	}
 
 	MS_Host_USBTask(&DiskHost_MS_Interface);		

Projects/Incomplete/StandaloneProgrammer/Lib/PetiteFATFs/diskio.c

@@ -42,7 +42,7 @@ DRESULT disk_readp (
 		else if (MS_Host_ReadDeviceBlocks(&DiskHost_MS_Interface, 0, sector, 1, 512, BlockTemp))
 		  ErrorCode = RES_ERROR;
 
-		printf("BLOCK READ #%lu Ret %d\r\n", sector, MS_Host_ReadDeviceBlocks(&DiskHost_MS_Interface, 0, sector, 1, 512, BlockTemp));
+		MS_Host_ReadDeviceBlocks(&DiskHost_MS_Interface, 0, sector, 1, 512, BlockTemp);
 		#endif
 	}
 	else

Projects/Incomplete/StandaloneProgrammer/StandaloneProgrammer.c

@@ -57,6 +57,16 @@ static int Disk_getchar(FILE* Stream)
 	return (ByteWasRead ? ReadByte : _FDEV_EOF);
 }
 
+#if defined(USB_CAN_BE_BOTH)
+/** Event to handle mode changes in the library, to clear the FAT library's drive state structure when transitioning
+ *  between modes. This ensures that the library always works with current disk data.
+ */
+void EVENT_USB_UIDChange(void)
+{
+	pf_mount(&DiskFATState);
+}
+#endif
+
 /** Task to determine if the user is wishes to start the programming sequence, and if so executes the 
  *  required functions to program the attached target (if any) with the files loaded to the dataflash.
  */

Projects/Incomplete/StandaloneProgrammer/StandaloneProgrammer.h

@@ -79,6 +79,8 @@
 			static int Disk_getchar(FILE* Stream);
 		#endif
 		
+		void EVENT_USB_UIDChange(void);
+		
 		void SetupHardware(void);
 		void Programmer_Task(void);