Datasheet

EA uniTFT Vorläufig
SMALL PROTOCOLL
Command Display
Byte
0 1 2 3 4 5
Send commands / data to dis-
play
receive
DC1
1
len
2
data ... ...
bcc
3
send ACK
Call the display's send buffer receive DC2 1 'S' bcc
send ACK
send DC1 len data ... ... bcc
Repeat last packet receive DC2 1 'R' bcc
send ACK
send DC1 len data ... ... bcc
Protocoll settings
receive DC2 3 'D'
packet size send-
buffer
4
timeout
5
[10 ms]
bcc
send ACK
Request buffer information receive DC2 1 'I' bcc
send ACK
send DC2 2
Sendbuffer bytes
ready
Receivebuffer bytes
free
bcc
Request protocoll in-
fromation
receive DC2 1 'P' bcc
send ACK
send DC2 3
max. Packet
size
akt. Packetsize
timeout
[10 ms]
bcc
Adressing RS485
receive DC2 3 'A'
Select /
Deselect
adr bcc
send ACK
RS485 direction enable delay
receive DC4 2 'T'
Verzögerung [10 us]
6
send ACK
Request / Release interface
receive DC2 1 'G'
0=Freigabe
1=Anfordern
send ACK
send DC2 1
aktiv
7
bcc
Break-command
receive DC2 1 'C'
mask
8
send ACK
Hardware Reset / Reboot
receive DC2 1 'B'
option
9
bcc
1
DC1 = 17d = 0x11; DC2 = 18d = 0x12
2
len: number of use data, without checksum, without DC1/2.
3
bcc: Sum of all bytes including DC1 / 2 and length (Modulo 256)
4
The maximum buffer size is 255
5
Delay in [10ms] till deletion of data packet. The default is 200 = 2 seconds.
Technische Änderung vorbehalten.
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