Texas Instruments Tiva TM4C123GH6PM - Page 20

Boot Loader
DFU_CMD_INFO This command is used to query information relating to the target de-
vice and programmable region of flash. The device information structure,
tDFUDeviceInfo, is returned on the next DFU_UPLOAD request following this
command.
The format of the command is as follows:
uint8_t pui8Data[8];
pui8Data[0] = DFU_CMD_INFO (0x05)
pui8Data[1] = Reserved - set to 0x00
pui8Data[2] = Reserved - set to 0x00
pui8Data[3] = Reserved - set to 0x00
pui8Data[4] = Reserved - set to 0x00
pui8Data[5] = Reserved - set to 0x00
pui8Data[6] = Reserved - set to 0x00
pui8Data[7] = Reserved - set to 0x00
//
*******************************************************************
//
// Payload returned in response to the DFU_CMD_INFO command.
//
// This is structure is returned in response to the first DFU_UPLOAD
// request following a DFU_CMD_INFO command. Note that byte ordering
// of multi-byte fields is little-endian.
//
//
*******************************************************************
typedef struct
{
//
// The size of a flash block in bytes.
//
uint16_t ui16FlashBlockSize;
//
// The number of blocks of flash in the device. Total
// flash size is usNumFlashBlocks
*
usFlashBlockSize.
//
uint16_t ui16NumFlashBlocks;
//
// Information on the part number, family, version and
// package as read from SYSCTL register DID1.
//
uint32_t ui32PartInfo;
//
// Information on the part class and revision as read
// from SYSCTL DID0.
//
uint32_t ui32ClassInfo;
//
// Address 1 byte above the highest location the boot
// loader can access.
//
uint32_t ui32FlashTop;
//
// Lowest address the boot loader can write or erase.
//
uint32_t ui32AppStartAddr;
}
PACKED tDFUDeviceInfo;
20 April 8, 2013