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

[pub/USBasp.git] / 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 5f12d02..6646278 100644 (file)
--- 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\r
  *  them to the dataflash in Dataflash page sized blocks.\r
  *\r
- *  \param[in] MSInterfaceInfo  Pointer to a structure containing a Mass Storage Class configuration and state.\r
+ *  \param[in] MSInterfaceInfo  Pointer to a structure containing a Mass Storage Class configuration and state\r
  *  \param[in] BlockAddress  Data block starting address for the write sequence\r
  *  \param[in] TotalBlocks   Number of blocks of data to write\r
  */\r
@@ -69,11 +69,8 @@ void DataflashManager_WriteBlocks(USB_ClassInfo_MS_Device_t* MSInterfaceInfo, co
        Dataflash_SendAddressBytes(0, CurrDFPageByte);\r
 \r
        /* Wait until endpoint is ready before continuing */\r
-       while (!(Endpoint_IsReadWriteAllowed()))\r
-       {\r
-               if (USB_DeviceState == DEVICE_STATE_Unattached)\r
-                 return;\r
-       }\r
+       if (Endpoint_WaitUntilReady())\r
+         return;\r
 \r
        while (TotalBlocks)\r
        {\r
@@ -89,11 +86,8 @@ void DataflashManager_WriteBlocks(USB_ClassInfo_MS_Device_t* MSInterfaceInfo, co
                                Endpoint_ClearOUT();\r
                                \r
                                /* Wait until the host has sent another packet */\r
-                               while (!(Endpoint_IsReadWriteAllowed()))\r
-                               {\r
-                                       if (USB_DeviceState == DEVICE_STATE_Unattached)\r
-                                         return;\r
-                               }\r
+                               if (Endpoint_WaitUntilReady())\r
+                                 return;\r
                        }\r
 \r
                        /* Check if end of dataflash page reached */\r
@@ -183,7 +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\r
  *  and writes them in OS sized blocks to the endpoint.\r
  *\r
- *  \param[in] MSInterfaceInfo  Pointer to a structure containing a Mass Storage Class configuration and state.\r
+ *  \param[in] MSInterfaceInfo  Pointer to a structure containing a Mass Storage Class configuration and state\r
  *  \param[in] BlockAddress  Data block starting address for the read sequence\r
  *  \param[in] TotalBlocks   Number of blocks of data to read\r
  */\r
@@ -205,11 +199,8 @@ void DataflashManager_ReadBlocks(USB_ClassInfo_MS_Device_t* MSInterfaceInfo, con
        Dataflash_SendByte(0x00);\r
        \r
        /* Wait until endpoint is ready before continuing */\r
-       while (!(Endpoint_IsReadWriteAllowed()))\r
-       {\r
-               if (USB_DeviceState == DEVICE_STATE_Unattached)\r
-                 return;\r
-       }\r
+       if (Endpoint_WaitUntilReady())\r
+         return;\r
        \r
        while (TotalBlocks)\r
        {\r
@@ -225,11 +216,8 @@ void DataflashManager_ReadBlocks(USB_ClassInfo_MS_Device_t* MSInterfaceInfo, con
                                Endpoint_ClearIN();\r
                                \r
                                /* Wait until the endpoint is ready for more data */\r
-                               while (!(Endpoint_IsReadWriteAllowed()))\r
-                               {\r
-                                       if (USB_DeviceState == DEVICE_STATE_Unattached)\r
-                                         return;\r
-                               }\r
+                               if (Endpoint_WaitUntilReady())\r
+                                 return;\r
                        }\r
                        \r
                        /* Check if end of dataflash page reached */\r
@@ -502,3 +490,36 @@ 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