Matrix Orbital GLK12232-25, Техническое руководство, Страница: 31 / 41

Command Summary 31
10.2 Set Data
Lock
Dec
Hex
ASCII 254 202 245 160
FE CA F5 A0
■ ╩
⌡ á
Level
Level
Level v5.8
Temporarily locks certain aspects of the display to ensure no inadvertent changes are made. The lock is released
after a power cycle. A new level overrides the old, and levels can be combined. Default is 0.
Level Byte Lock level, see Data Lock Bits table.
Table 28: Data Lock Bits
Display Command Filesystem Setting Address Reserved Reserved Reserved
7 6 5 4 3 2 1 0
Table 29: Lock Parameters
Reserved Place holders only, should be 0
Address Locks the Baud Rate and I2C address
Setting Locks all settings from being saved
Filesystem Locks all bitmaps and fonts
Command Locks all commands, text can still be written
Display Locks entire display, no new text can be displayed
10.3 Set and Save
Data Lock
Dec
Hex
ASCII 254 203 245 160
FE CB F5 A0
■ ╦
⌡ á
Level
Level
Level v5.8
Locks certain aspects of the display to ensure no inadvertent changes are made. The lock is not affected by a
power cycle. A new level overrides the old, and levels can be combined. Default is 0.
Level Byte See Data Lock Bits table.
6.11 Miscellaneous
11.1 Write
Customer Data
Dec
Hex
ASCII 254 52
FE 34
■
4
Data
Data
Data v5.8
Saves a user defined block of data to non-volatile memory. Useful for storing display information for later use.
Data Byte(s) User defined data, 16 bytes.
11.2 Read
Customer Data
Dec
Hex
ASCII 254 53
FE 35
■
5
v5.8
Reads data previously written to non-volatile memory. Data is only changed when written, surviving power cycles.
Response Byte(s) Previously saved user defined data, 16 bytes.
11.3 Read Version
Number
Dec
Hex
ASCII 254 54
FE 36
■
6
v5.8
Causes display to respond with its firmware version number. Often used as a communication test.
Response Byte Convert to hexadecimal to view major and minor revision numbers.