Texas Instruments Tiva TM4C123GH6PM, User Manual

Page: 24 / 352

Boot Loader
uint8_t pui8Strings[] =
{
(1 * 2) + 2, // One Language (1 * 2) + 2
USB_DTYPE_STRING,
0x09, 0x04, // Language code for US English.
(17 * 2) + 2, // Size of Manufacturer String.
// "Texas Instruments"
USB_DTYPE_STRING,
’T’, 0, ’e’, 0, ’x’, 0, ’a’, 0, ’s’, 0, ’ ’, 0, ’I’, 0, ’n’, 0,
’s’, 0, ’t’, 0, ’r’, 0, ’u’, 0, ’m’, 0, ’e’, 0, ’n’, 0, ’t’, 0,
’s’, 0,
(23 * 2) + 2, // Size of Product String.
USB_DTYPE_STRING,
// "Device Firmware Upgrade"
’D’, 0, ’e’, 0, ’v’, 0, ’i’, 0, ’c’, 0, ’e’, 0, ’ ’, 0, ’F’, 0,
’i’, 0, ’r’, 0, ’m’, 0, ’w’, 0, ’a’, 0, ’r’, 0, ’e’, 0, ’ ’, 0,
’U’, 0, ’p’, 0, ’g’, 0, ’r’, 0, ’a’, 0, ’d’, 0, ’e’, 0,
(3 * 2) + 2, // Size of Serial Number.
USB_DTYPE_STRING,
// "1.0"
’1’, 0, ’.’, 0, ’0’, 0
};
uint8_t pui8USBBootROMInfo[] =
{
0xbe, 0x1c, // TI VID
0xff, 0x00, // Tiva DFU PID
0x00, 0x02, // USB version 2.0
0x00, // 0mA of Bus power
0xC0, // Self powered using no bus power
pui8Strings // Address of the string table
}
//
// Call to ROM USB boot loader.
//
ROM_UpdateUSB(pui8USBBootROMInfo);
Example: Two Languages with English(United States) and Spanish(Mexico) strings.
uint8_t pui8Strings[] =
{
(2 * 2) + 2, // Two languages
USB_DTYPE_STRING,
0x09, 0x04, // Language code for English(United States).
0x0a, 0x08, // Language code for Spanish(Mexico)
(10 * 2) + 2, // Size of Manufacturer String.
24 April 8, 2013