参数资料
型号: LK204-7T-1U-USB-TCI
厂商: Matrix Orbital
文件页数: 18/40页
文件大小: 1901K
描述: LCD USB 4X20 BLACK/TRI COLOR
产品变化通告: 12C Displays Change 11/Oct/2011
标准包装: 1
系列: *
其它名称: 635-1055
25
6.5
Dallas One-Wire
5.1
Search for a
One-Wire Device
Dec
Hex
ASCII
254 200 2
FE C8 02
SOT
v5.0
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
Bytes [14]
Dallas One-Wire identification packet as
shown below.
Table 15: Dallas One-Wire Packet Information
Offset
Length
Value
Description
0
2
9002
Preamble
2
1
138
Another device packet will follow OR
10
Last device packet
3
1
49
Packet Type
4
1
0
Error Code (0 indicates success)
5
8
Device Address
13
1
0
CRC8 address check (0 indicates validity)
5.2
Dallas One-Wire
Transaction
Dec
Hex
ASCII
254 200 1
FE C8 01
STX
Flags Send Bits Receive Bits Data
Flags Send Bits Receive Bits Data
Flags Send Bits
Receive Bits Data
v5.0
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
Byte
Flags for transaction, see below.
Send Bits
Byte
Number of bytes to be sent to the device.
Receive Bits
Byte
Number of bytes expected to be received from the device.
Data
Byte(s)
Data to be transmitted LSB to MSB.
Table 16: Dallas One-Wire Flags
Bit
Flag Description
7
6
Unused
5
4
0 (Future Compatibility)
3
Add CRC8 to transaction
2
0 (Future Compatibility)
1
Read CRC8 from transaction
0
Reset Bus prior to transaction
Table 17: Dallas One-Wire Errors
Code
Error Description
0
Success
1
Unknown Command
2
No Devices Found
3
Fatal Search Error
相关PDF资料
PDF描述
LK204-7T-1U-USB-GW LCD USB 4X20 GRAY/WHITE
CWX823-016.0M OSC 16.0000MHZ 3.3V +-50PPM SMD
LK204-25-422-WB LCD CHARAC DISPLAY 20X4 RS422
LK204-7T-1U-WB-V LCD DISPLAY 20X4 I2C/RS232/TTL
LK204-7T-1U-WB-LV LCD DISPLAY 20X4 I2C/RS232/TTL
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