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参数资料
| 型号： | LK202-25-FW-E |
| 厂商： | Matrix Orbital |
| 文件页数： | 18/42页 |
| 文件大小： | 2198K |
| 描述： | LCD CHAR DISP 20X2 I2C/RS232/TTL |
| 标准包装： | 1 |
| 系列： | LK202-25 |
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21
6.5
Dallas One-Wire
5.1
Search for a
One-Wire Device
Dec
Hex
ASCII
254 200 2
FE C8 02
■
╚
SOT
v5.6
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
v5.6
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
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LK202-25-FW-V | 功能描述:LCD字符显示模块与配件 20x2 Wht Txt Blk B/G Ext. Volt 25 key RoHS:否 制造商:Lumex 显示模式:Transflective 字符计数 x 行:16 x 2 特点: 流体类型:STN 接口: 背景色: 工作温度范围:- 20 C to + 70 C 封装:Bulk |
| LK202-25-FW-V-E | 制造商:Matrix Orbital 功能描述:20x2 Wht Txt, Blk BG Wide Volt, Ext Temp |
| LK202-25-FY | 功能描述:LCD字符显示模块与配件 Black Background Yellow Text RoHS:否 制造商:Lumex 显示模式:Transflective 字符计数 x 行:16 x 2 特点: 流体类型:STN 接口: 背景色: 工作温度范围:- 20 C to + 70 C 封装:Bulk |
| LK202-25-GW | 功能描述:LCD字符显示模块与配件 White Background Blue Text RoHS:否 制造商:Lumex 显示模式:Transflective 字符计数 x 行:16 x 2 特点: 流体类型:STN 接口: 背景色: 工作温度范围:- 20 C to + 70 C 封装:Bulk |
| LK202-25-GW-E | 功能描述:LCD字符显示模块与配件 20x2 L. Blu Txt G/Wht B/G Ext. Temp RoHS:否 制造商:Lumex 显示模式:Transflective 字符计数 x 行:16 x 2 特点: 流体类型:STN 接口: 背景色: 工作温度范围:- 20 C to + 70 C 封装:Bulk |
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