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CFA631 Datasheet(Arkusz danych) 44 Page - Crystalfontz America, Inc.

Numer części CFA631
Szczegółowy opis  INTELLIGENT DISPLAY MODULE
Pobierz  81 Pages
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Producent  CRYSTAIFONTZ [Crystalfontz America, Inc.]
Strona internetowa  https://www.crystalfontz.com/
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 44 page
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Crystalfontz
Data Sheet Release 2014-11-17
www.crystalfontz.com
CFA631 Intelligent Display Modules
Page 44
Set Display Contents, Line 2 is one of the items stored by the command 4 (0x04): Store Current State As Boot
State (Pg. 39).
9 (0x09): Set Display Special Character Data
Sets the font definition for one of the special characters (CGROM). (See CHARACTER GENERATOR ROM
(CGROM) (Pg. 62)
type: 0x09 = 910
valid data_length is 9
data[0] = index of special character that you would like to modify, 0-7 are valid
data[1-8] = bitmap of the new font for this character
data[1-8]
are the bitmap information for this character. Any value is valid between 0 and 63, the msb is at the left of
the character cell of the row, and the lsb is at the right of the character cell. Additionally, if you set bit 7 of any of the data
bytes, the entire line of pixels within this character will blink.
data[1]
is at the top of the cell.
data[8]
is at the bottom of the cell.
The return packet will be:
type: 0x40 | 0x09 = 0x49 = 7310
data_length = 0
Set Display Special Character Data is one of the items stored by the command 4 (0x04): Store Current State As Boot
State (Pg. 39).
10 (0x0A): Read 8 Bytes of Display Memory
This command will return the contents of the display’s DDRAM or CGROM. This command is intended for debugging.
type: 0x0A = 1010
valid data_length is 1
data[0] = address code of desired data
data[0]
is the address code native to the display controller:
0x40 (\064) to 0x7F (\127) for CGROM
0x80 (\128) to 0x93 (\147) for DDRAM, line 1
0xC0 (\192) to 0xD3 (\211) for DDRAM, line 2
The return packet will be:
type: 0x40 | 0x0A = 0x4A = 7410
data_length = 9
data[0
] of the return packet will be the address code.
data[1-8]
of the return packet will be the data read from the display’s controller's memory.
11 (0x0B): Set Display Cursor Position
This command allows the cursor to be placed at the desired location on the CFA631’s display. If you want the cursor to
be visible, you may also need to send a command 12 (0x0C): Set Display Cursor Style (Pg. 45).
type: 0x0B = 1110
valid data_length is 2
data[0] = column (0-19 valid)
data[1] = row (0-1 valid)
The return packet will be:
type: 0x40 | 0x0B = 0x4B = 7510
data_length = 0




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