X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/a9d5e129b76449c73a853af450d7d353512cd3a0..21cc9c9e19ce6bd757410cc6da29b5dc2ee8041c:/Demos/Device/ClassDriver/MassStorage/Lib/DataflashManager.c

diff --git a/Demos/Device/ClassDriver/MassStorage/Lib/DataflashManager.c b/Demos/Device/ClassDriver/MassStorage/Lib/DataflashManager.c
index 3858d3873..6646278ee 100644
--- a/Demos/Device/ClassDriver/MassStorage/Lib/DataflashManager.c
+++ b/Demos/Device/ClassDriver/MassStorage/Lib/DataflashManager.c
@@ -43,7 +43,7 @@
  *  the pre-selected data OUT endpoint. This routine reads in OS sized blocks from the endpoint and writes
  *  them to the dataflash in Dataflash page sized blocks.
  *
- *  \param[in] MSInterfaceInfo  Pointer to a structure containing a Mass Storage Class configuration and state.
+ *  \param[in] MSInterfaceInfo  Pointer to a structure containing a Mass Storage Class configuration and state
  *  \param[in] BlockAddress  Data block starting address for the write sequence
  *  \param[in] TotalBlocks   Number of blocks of data to write
  */
@@ -177,7 +177,7 @@ void DataflashManager_WriteBlocks(USB_ClassInfo_MS_Device_t* MSInterfaceInfo, co
  *  the pre-selected data IN endpoint. This routine reads in Dataflash page sized blocks from the Dataflash
  *  and writes them in OS sized blocks to the endpoint.
  *
- *  \param[in] MSInterfaceInfo  Pointer to a structure containing a Mass Storage Class configuration and state.
+ *  \param[in] MSInterfaceInfo  Pointer to a structure containing a Mass Storage Class configuration and state
  *  \param[in] BlockAddress  Data block starting address for the read sequence
  *  \param[in] TotalBlocks   Number of blocks of data to read
  */
@@ -490,3 +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;
+}