Maxim Integrated MAX31782 - Manual (Page 161)

MaximIntegrated 18-10
MAX31782 User’s Guide
Revision 0; 8/11
18.3.6Command05h—GetSupportedCommands
The SupportL (LSB) and SupportH (MSB) bytes form a 16-bit value that indicates which command families the boot-
loader supports . If bit 0 is set to 1, it indicates that Family 0 is supported . If bit 1 is set to 1, it indicates that Family 1 is
supported . The value returned by the MAX31782 is 403Fh, indicating that command families 0, 1, 2, 3, 4, 5 and E are
supported . This command is not password protected .
18.3.7Command06h—GetCodeSize
This command returns SizeH:SizeL, which represents the size of available code memory in words minus 1 . The
MAX31782 returns a value of 7FFFh, which indicates 32kWords of program memory are available . This command is not
password protected .
18.3.8Command07h—GetDataSize
This command returns SizeH:SizeL, which represents the size of available data memory in words minus 1 . The
MAX31782 returns a value of 03FFh, which indicates 1kWords of data memory are available . This command is not
password protected .
Table18-7.BootloaderStatusCodes
Byte1 Byte2 Byte3 Byte4 Byte5 Byte6 Byte7 Byte8
Command NOP DataOut DataOut DataOut DataOut Return DummyRX
Input 05h 00h 00h 00h 00h 00h 00h 00h
Output X X SupportL SupportH 00h 00h 3Eh X
Byte1 Byte2 Byte3 Byte4 Byte5 Byte6
Command NOP DataOut DataOut Return DummyRX
Input 06h 00h 00h 00h 00h 00h
Output X X SizeL SizeH 3Eh X
Byte1 Byte2 Byte3 Byte4 Byte5 Byte6
Command NOP DataOut DataOut Return DummyRX
Input 07h 00h 00h 00h 00h 00h
Output X X SizeL SizeH 3Eh X
STATUSVALUE MEANING
00 NoError.The last command completed successfully .
01
FamilyNotSupported.An attempt was made to use a command from a family which the bootloader does
not support .
02
InvalidCommand.An attempt was made to use a nonexistent command within a supported command
family .
03
NoPasswordMatch.An attempt was made to use a password-protected command without first matching
a valid password . Or, the Password Match command was called with an incorrect password value .
04 BadParameter.An input parameter passed to the command was out of range or otherwise invalid .
05 VerifyFailed.The verification step failed on a Load/Verify or Verify command .
06 UnknownRegister.An attempt was made to read from or write to a nonexistent register .
07
WordModeNotSupported.An attempt was made to set word mode access, but the bootloader supports
byte mode access only .
08 MasterEraseFailed.The bootloader was unable to perform master erase .