Erase User Flash Sector; User Storage Status (Colorpos ® ) - CognitiveTPG A799II Programming Manual

130 Chapter 4: Programming Commands

Erase user flash sector

ASCII
GS @ n
Hexadecimal
1D 40 n
Decimal 29 64 n
Value of n:
49 – 51
n = 49 (ASCII n = 1) HEX 31
This command erases all 64K flash memory sectors allocated to user-defined character and logos storage. Those sectors
should be erased in two situations: when the logo definition area is full and an application is attempting to define new
logos, and when an application wants to replace one user-defined character set with another. In both cases, all logos and
character set definitions are erased and must be redefined.
n = 50 (ASCII n = 2) HEX 32
This command erases all sectors available for user data storage.
n = 51 (ASCII n = 3) HEX 33
This command erases all sectors available for permanent fonts.
Erases a page of flash memory and sends a carriage return when the operation is complete.
Related information
See command "Flash memory user sectors allocation" (1D 22 55 n1 n2).
See also command "Expanded flash memory allocation" (1D 22 80) and "Select flash area" (1D 22 81 n).
Important: While erasing flash memory, the printer disables all interrupts, including communications. To provide feedback
to the application, the printer responds to the application when the erase is complete with a 0D (Hex). After sending the
erase user flash sector (1D 40 n) command, an application should wait for the response from the printer before sending
data. Otherwise, data will be lost. If an application is unable to receive data, it should wait a minimum of ten seconds after
sending the erase user flash sector (1D 40 n) command before sending data.
User storage status (ColorPOS
ASCII
GS 0x97 m n
Hexadecimal
1D 97 m n
Decimal 29 151 m n
Value of m:
m specifies the type of stored object to be reported:
m = 0 return the kilobytes (1024) of free user RAM,
n = 0 gets largest free block size
n = 1 gets the total size free
m = 1 return the kilobytes of free character & logo flash memory, n = 0
m = 3 return the CRC of a logo indexed by n
m = 5 return the CRC of a macro that has been stored, n = 0
m = 6 return the number of LEGACY trigger slots open
m = 7 return the kilobytes of free permanent flash, n = 0
For m = 0 the value of n selects a return of either the largest free block or total free size, since contiguous allocation cannot
be assumed as this area is completely under user control through address parameters.
n = 0 if only one instance of an object type is allowed (macro, user data, user defined characters).
n is the item index when more than one object of type m is possible
n <= FE, see the comments about logo indexes
n = FF : return a list describing all the existing items of type m
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A799-2PG0001B 4/2016