X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/4f747e7b7607b2dbd8521230ddf3bdbe3dcb29a8..fa8d25ef29eb9e96f9089d17eeb64b3a5edb8e66:/Demos/Device/ClassDriver/MassStorage/Lib/DataflashManager.c?ds=sidebyside

diff --git a/Demos/Device/ClassDriver/MassStorage/Lib/DataflashManager.c b/Demos/Device/ClassDriver/MassStorage/Lib/DataflashManager.c
index 1c584e71c..257f3b656 100644
--- a/Demos/Device/ClassDriver/MassStorage/Lib/DataflashManager.c
+++ b/Demos/Device/ClassDriver/MassStorage/Lib/DataflashManager.c
@@ -69,7 +69,8 @@ void DataflashManager_WriteBlocks(USB_ClassInfo_MS_Device_t* MSInterfaceInfo, co
 	Dataflash_SendAddressBytes(0, CurrDFPageByte);
 
 	/* Wait until endpoint is ready before continuing */
-	while (!(Endpoint_IsReadWriteAllowed()));
+	if (Endpoint_WaitUntilReady())
+	  return;
 
 	while (TotalBlocks)
 	{
@@ -85,7 +86,8 @@ void DataflashManager_WriteBlocks(USB_ClassInfo_MS_Device_t* MSInterfaceInfo, co
 				Endpoint_ClearOUT();
 				
 				/* Wait until the host has sent another packet */
-				while (!(Endpoint_IsReadWriteAllowed()));
+				if (Endpoint_WaitUntilReady())
+				  return;
 			}
 
 			/* Check if end of dataflash page reached */
@@ -197,7 +199,8 @@ void DataflashManager_ReadBlocks(USB_ClassInfo_MS_Device_t* MSInterfaceInfo, con
 	Dataflash_SendByte(0x00);
 	
 	/* Wait until endpoint is ready before continuing */
-	while (!(Endpoint_IsReadWriteAllowed()));
+	if (Endpoint_WaitUntilReady())
+	  return;
 	
 	while (TotalBlocks)
 	{
@@ -213,7 +216,8 @@ void DataflashManager_ReadBlocks(USB_ClassInfo_MS_Device_t* MSInterfaceInfo, con
 				Endpoint_ClearIN();
 				
 				/* Wait until the endpoint is ready for more data */
-				while (!(Endpoint_IsReadWriteAllowed()));
+				if (Endpoint_WaitUntilReady())
+				  return;
 			}
 			
 			/* Check if end of dataflash page reached */
@@ -486,3 +490,36 @@ void DataflashManager_ResetDataflashProtections(void)
 	/* Deselect current dataflash chip */
 	Dataflash_DeselectChip();
 }
+
+/** Performs a simple test on the attached Dataflash IC(s) to ensure that they are working.
+ *
+ *  \return Boolean true if all media chips are working, false otherwise
+ */
+bool DataflashManager_CheckDataflashOperation(void)
+{
+	uint8_t ReturnByte;
+
+	/* Test first Dataflash IC is present and responding to commands */
+	Dataflash_SelectChip(DATAFLASH_CHIP1);
+	Dataflash_SendByte(DF_CMD_READMANUFACTURERDEVICEINFO);
+	ReturnByte = Dataflash_ReceiveByte();
+	Dataflash_DeselectChip();
+
+	/* If returned data is invalid, fail the command */
+	if (ReturnByte != DF_MANUFACTURER_ATMEL)
+	  return false;
+
+	#if (DATAFLASH_TOTALCHIPS == 2)
+	/* Test second Dataflash IC is present and responding to commands */
+	Dataflash_SelectChip(DATAFLASH_CHIP2);
+	Dataflash_SendByte(DF_CMD_READMANUFACTURERDEVICEINFO);
+	ReturnByte = Dataflash_ReceiveByte();
+	Dataflash_DeselectChip();
+
+	/* If returned data is invalid, fail the command */
+	if (ReturnByte != DF_MANUFACTURER_ATMEL)
+	  return false;
+	#endif
+	
+	return true;
+}