CognitiveTPG A776 ColorPOS, Programming Manual

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Chapter 5: Programming commands 122
A776 (B780) Programming Guide A776-PG00001 D 07/13
Select flash area for storing logos and user-defined characters
ASCII GS” 0x81
Hexadecimal
1D 22 81 n
Decimal 29 34 129 n
Value of n :
n specifies
n = 0 select logo/font flash
n = 1 select permanent font flash
n > 1 reserved
Logos and user-defined characters can be stored in either flash area.
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.