Minor demo/project documentation and style fixes.

[pub/USBasp.git] / Demos / Host / LowLevel / MassStorageHost / Lib / MassStoreCommands.c

diff --git a/Demos/Host/LowLevel/MassStorageHost/Lib/MassStoreCommands.c b/Demos/Host/LowLevel/MassStorageHost/Lib/MassStoreCommands.c
index b25a37e..48d6035 100644 (file)
--- a/Demos/Host/LowLevel/MassStorageHost/Lib/MassStoreCommands.c
+++ b/Demos/Host/LowLevel/MassStorageHost/Lib/MassStoreCommands.c
@@ -68,13 +68,13 @@ static uint8_t MassStore_SendCommand(MS_CommandBlockWrapper_t* const SCSICommand
 {
        uint8_t ErrorCode = PIPE_RWSTREAM_NoError;
 
-       /* Each transmission should have a unique tag value, increment before use */
-       SCSICommandBlock->Tag = ++MassStore_Tag;
-
        /* Wrap Tag value when invalid - MS class defines tag values of 0 and 0xFFFFFFFF to be invalid */
-       if (MassStore_Tag == 0xFFFFFFFF)
+       if (++MassStore_Tag == 0xFFFFFFFF)
          MassStore_Tag = 1;
 
+       /* Each transmission should have a unique tag value, increment before use */
+       SCSICommandBlock->Tag = MassStore_Tag;
+
        /* Select the OUT data pipe for CBW transmission */
        Pipe_SelectPipe(MASS_STORE_DATA_OUT_PIPE);
        Pipe_Unfreeze();
@@ -95,7 +95,7 @@ static uint8_t MassStore_SendCommand(MS_CommandBlockWrapper_t* const SCSICommand
        /* Freeze pipe after use */
        Pipe_Freeze();
 
-       /* Send data if any */
+       /* Send data if any has been given */
        if ((BufferPtr != NULL) &&
            ((ErrorCode = MassStore_SendReceiveData(SCSICommandBlock, BufferPtr)) != PIPE_READYWAIT_NoError))
        {