Cleanups to the MassStorage Device demos, and the MassStorage Device Class driver.

[pub/USBasp.git] / Demos / Device / LowLevel / MassStorage / Lib / DataflashManager.c

diff --git a/Demos/Device/LowLevel/MassStorage/Lib/DataflashManager.c b/Demos/Device/LowLevel/MassStorage/Lib/DataflashManager.c
index 9cd0279..7d070f3 100644 (file)
--- a/Demos/Device/LowLevel/MassStorage/Lib/DataflashManager.c
+++ b/Demos/Device/LowLevel/MassStorage/Lib/DataflashManager.c
@@ -488,3 +488,36 @@ void DataflashManager_ResetDataflashProtections(void)
        /* Deselect current dataflash chip */\r
        Dataflash_DeselectChip();\r
 }\r
+\r
+/** Performs a simple test on the attached Dataflash IC(s) to ensure that they are working.\r
+ *\r
+ *  \return Boolean true if all media chips are working, false otherwise\r
+ */\r
+bool DataflashManager_CheckDataflashOperation(void)\r
+{\r
+       uint8_t ReturnByte;\r
+\r
+       /* Test first Dataflash IC is present and responding to commands */\r
+       Dataflash_SelectChip(DATAFLASH_CHIP1);\r
+       Dataflash_SendByte(DF_CMD_READMANUFACTURERDEVICEINFO);\r
+       ReturnByte = Dataflash_ReceiveByte();\r
+       Dataflash_DeselectChip();\r
+\r
+       /* If returned data is invalid, fail the command */\r
+       if (ReturnByte != DF_MANUFACTURER_ATMEL)\r
+         return false;\r
+\r
+       #if (DATAFLASH_TOTALCHIPS == 2)\r
+       /* Test second Dataflash IC is present and responding to commands */\r
+       Dataflash_SelectChip(DATAFLASH_CHIP2);\r
+       Dataflash_SendByte(DF_CMD_READMANUFACTURERDEVICEINFO);\r
+       ReturnByte = Dataflash_ReceiveByte();\r
+       Dataflash_DeselectChip();\r
+\r
+       /* If returned data is invalid, fail the command */\r
+       if (ReturnByte != DF_MANUFACTURER_ATMEL)\r
+         return false;\r
+       #endif\r
+       \r
+       return true;\r
+}\r