SmartGPU2-LCD480X320Touch-CommandSet

SMART GPU 2 3.5” TOUCH
Command Set
Vizic Technologies ©2014 126
2.11.1 Init/Clear EEPROM Buffer –49hex – ‘I’ ascii
Commands (host)
2 bytes
1.- 0x45 (hex), E (ascii). *EEPROM command.
2.- 0x49 (hex), I (ascii).
Responses (device)
1 byte
1.- 0x4F (hex), O (ascii) – success ACK or
0x46 (hex), F (ascii) – fail NAK.
Description
This command Initializes to 0xFFs all the
EEPROM RAM Buffer 2048bytes.
As user may know, an erased EEPROM
Page is filled with 0xFFs, not 0x00s, so by
Initializing the EEPROM RAM Buffer to 0xFFs
and then comparing this EEPROM RAM buffer
with an EEPROM Page, user can determine if
the Page is clean/erased or not.
During Read, Write, Erase, Compare, etc.
EEPROM Functions/Commands, user may not
call any other command rather than EEPROM
commands, as the EEPROM RAM Buffer data
is only valid during calls to EEPROM only
functions, if any other function/command
different than EEPROM related is called,
EEPROM RAM Buffer will be discarded and
data in it will be lost.
Example (sent and received
commands)
Example 1:
<45,49> 4F – Initialize RAM Buffer, after this
command succeeds, all contents of EEPROM
RAM Buffer are 0xFFs (2048 bytes).
All data is in hex.