Chapter 10
USBD_MSC_LunAdd((void *)”ram:0:”,
msc_nbr,
“Micrium”,
“MSC RamDisk”,
0x0000,
DEF_FALSE,
(5)
10
&err);
if (err != USBD_ERR_NONE){
return (DEF_FAIL);
}
return(DEF_OK);
Listing 10-1 MSC Initialization
L10-1(1)
Initialize internal structures and variables used by MSC BOT.
L10-1(2)
Add a new instance of the MSC.
L10-1(3)
Check if high speed configuration is active and proceed to add an existing MSC
interface to the USB configuration.
L10-1(4)
Check if full speed configuration is active and proceed to add an existing MSC
interface to the USB configuration.
L10-1(5)
Add a logical unit number to the MSC interface by specifying the type and
volume. Note that in this example the <device_driver_name> string is “ram”
and <logical_unit_number> string is “0”.
10-5 USING THE DEMO APPLICATION
The MSC demo consists of two parts:
Any file explorer application (Windows, Linux, Mac) from a USB host. For instance, in
Windows, mass-storage devices appear as drives in My Computer . From Windows
Explorer, users can copy, move, and delete files in the devices.
The USB Device application on the target board which responds to the request of the
host.
176
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