Mass Storage Class Demonstration - Renesas H8SX1664 User Manual

Starter kit usb sample code

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5.4.Mass Storage Class Demonstration

The MSC sample demonstrates how a host can view a MSC device as an external drive. There is no additional application for this as the

MSC support is inherent in Windows XP.

Start the MSC sample application running on the RSK then connect the RSK to a Windows PC via a USB cable.

Using Windows Explorer, or similar, look to find the new drive that Windows will have mounted. This drive is viewing the contents of the

sample RAM Disk on the RSK. It has been formatted with a FAT file system and given a volume name of "RENESAS". The available space

for data is 4KB. It includes one example file called Renesas.txt which can be opened edited and saved. As you would expect from a normal

drive you can also copy files to it, although remember that this is a RAM Disk that will loose its contents when power is removed from the

RSK.

Figure 4 - Windows Explorer showing new Disk Drive mapping

There is an option in file 'ram_disk.c' that will prevent the RAM disk from initialising itself with a file system. To select this comment out the

#define of FORMAT_WITH_FAT_Example. In this case Windows will report that the drive is not formatted and give the user the option of

formatting it.

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