GLK240128-25-WB-VPT Matrix Orbital, GLK240128-25-WB-VPT Datasheet - Page 34

• Manufacturer Part Number: GLK240128-25-WB-VPT
• Description: LCD GRAPHIC DISPL 240X128 BLU WH
• Manufacturer: Matrix Orbital
• Series: GLK240128-25r

Specifications of GLK240128-25-WB-VPT

• Display Type: LCD - Color
• Display Mode: Transmissive
• Viewing Area: 114.00mm L x 64.00mm W
• Backlight: LED - Blue
• Dot Pixels: 240 x 128
• Interface: I²C, RS232, TTL
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Dot Size: -
• Dot Pitch: -
• Other names: GLK240128-25 -WB-VPT; GLK240128-25 -WB-VPT

7.1 Search for a One-Wire
Device
Sends a search query to each of the up to 32 devices on the one wire bus. Any connected device will respond with
an identification packet.
Response
7.2 Dallas One-Wire
Transaction
Performs a single Dallas 1-Wire transaction. Consult your device documentation for information regarding device
specific protocols. If an error is encountered, a corresponding value will be returned by the device.
Flags
Send Bits
Receive Bits
Data
8.1 Activate Piezo Buzzer
Activates a 488Hz buzz from the onboard piezo buzzer for a specified length of time.
Frequency
Time
6.7 Dallas One-Wire
6.8 Piezo Buzzer
Bit
7
6
5
4
3
2
1
0
Table 30: Dallas One-Wire Flag Table
14 bytes, identification packet as shown below
2 bytes, frequency of buzz in hertz
2 bytes, length of buzzer sound in milliseconds
1 byte, flags for transaction, see below
1 byte, number of bytes to be sent to the device
1 byte, number of bytes expected to be received from the device
Variable, data to be transmitted LSB to MSB
Reset Bus prior to transaction
Read CRC8 from transaction
Add CRC8 to transaction
0 (Future Compatibility)
0 (Future Compatibility)
Flag Description
Offset
Dec
Hex
13
0
2
3
4
5
Unused
Dec
Hex
Dec
Hex
254 200 1
Length
FE C8 01
2
1
1
1
8
1
Table 29: Dallas One-Wire Packet Information
254 200 2
254 187
FE C8 02
FE BB
Value
9002
138
10
49
Flags Send Bits Receive Bits Data
Flags Send Bits Receive Bits Data
0
0
Frequency Time
Frequency Time
CRC8 address check (0 indicates validity)
Another device packet will follow
Error Code (0 indicates success)
Last device packet
Device Address
Packet Type
Description
Preamble
Table 31: Dallas One-Wire Error Table
Code
0
1
2
3
Unknown Command
No Devices Found
Fatal Search Error
Error Description
OR
Success
28