Description: ds1820或ds18b20的读序列码子程序，可在线读出多个芯片的序列码。-ds1820 or ds18b20 read sequence distinctly different procedures are available online to read out a number of chip sequence code. Platform: |
Size: 21504 |
Author:张燚 |
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Description: 学习掌握单总线数字式温度传感器 DS18B20的64位激光ROM码的读出方法。读DS18B20 64位ROM码命令（33h）允许主机直接读出从机的64位ROM代码，而无须执行搜索ROM 过程。如果该命令用于多节点系统，则必然发生数据冲突，因为每个从机设备都会响应该命令。64 位激光ROM 从高位到低位依次由8 位CRC、48 位列号和8 位家族代码(28H)组成。-learning and mastering digital single bus DS18B20 64 laser ROM code to read out the side France. Reading DS18B20 64 orders ROM code (33h) allows mainframe directly read out from the plane of the 64 generation ROM code, and are not required to implement ROM search process. If the order for the multi-node system, the data was inevitable conflict, because each from the plane's equipment will respond to the order. 64 ROM laser from high to low followed by eight CRC, 48 ranks and eight family code (28H). Platform: |
Size: 2048 |
Author:孟晓英 |
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Description: 读取ds18b20的序列号的c程序。ds18b20可以用于温度测量。-DS18B20 read the serial number of the c program. DS18B20 can be used for temperature measurement. Platform: |
Size: 1024 |
Author:linjiangtao |
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Description: 8位单片机与DS18B20并行双向通信。
Quartus II 8.1项目工程文件.
主源程序文件为DS18B20.v,里面有详细注解。
例子：
DS18B20 数据地址 0xf000（ROM=0） DS18B20 ROM指令地址 0xf001（ROM=1）
外部电源供电且只有一DS18B20的读取法：
发送CC到0xf001,
等待busy=0说明器件已准备好,
读0xf001的Bit1=1说明存在器件,Bit0=1为控制忙(可以省略此步）
发送44到0xf000,
等待busy=0，
发送CC到0xf001，
等待busy=0，
发送BE到0xf000，
等待busy=0，
空读一次，
等待busy=0，
然后读到的就是DS18B20内部数据了.读一次必须等待busy=0，否则控制器将拒绝所有操作。
搜索ROM：
发送F0或EC到0xf001,
等待busy=0说明器件已准备好,
读0xf001的Bit1=1说明存在器件,Bit0=1为控制忙(可以省略此步）
空读0xf000，（第1次）
等待busy=0，
读0xf000，Bit0是DS18B20发送位的信息，Bit1为DS18B20发送位的补码信息
等待busy=0，
写0xf000，内容为路径。
等待busy=0，
。。。。。。
空读0xf000，（第64次）
等待busy=0，
读0xf000，Bit0是DS18B20发送位的信息，Bit1为DS18B20发送位的补码信息
等待busy=0，
写0xf000，内容为路径。
等待busy=0，
结束
-8-bit microcontroller with DS18B20 parallel two-way communication.
Quartus II 8.1 Project documents.
Primary source documents DS18B20.v, which detailed notes.
Example:
DS18B20 Data Address 0xf000 (ROM = 0) DS18B20 ROM instruction address 0xf001 (ROM = 1)
An external power supply and only a DS18B20 read method:
Send CC to 0xf001,
Wait for busy = 0 shows the device is ready,
Read 0xf001 the existence of Bit1 = 1 shows the device, Bit0 = 1 for the control of busy (you can omit this step)
Send 44 to 0xf000,
Wait for busy = 0,
Send CC to 0xf001,
Wait for busy = 0,
Send BE to 0xf000,
Wait for busy = 0,
Blank reading time,
Wait for busy = 0,
Then read is DS18B20 internal data. Read one must wait for the busy = 0, otherwise the controller will reject all operations.
Search ROM:
Send F0 or EC to 0xf001,
Wait for busy = 0 shows the device is ready,
Read 0xf001 the existence of Bit1 = 1 shows the device, Bit0 = 1 for the control of busy (you can omi Platform: |
Size: 338944 |
Author:yuantielei |
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Description: 详细说明：学习掌握单总线数字式温度传感器 DS18B20的64位激光ROM码的读出方法。读DS18B20 64位ROM码命令（33h）允许主机直接读出从机的64位ROM代码，而无须执行搜索ROM 过程。如果该命令用于多节点系统，则必然发生数据冲突，因为每个从机设备都会响应该命令。64 位激光ROM 从高位到低位依次由8 位CRC、48 位列号和8 位家族代码(28H)组成。--learning and mastering digital single bus DS18B20 64 laser ROM code to read out the side France. Reading DS18B20 64 orders ROM code (33h) allows mainframe directly read out from the plane of the 64 generation ROM code, and are not required to implement ROM search process. If the order for the multi-node system, the data was inevitable conflict, because each from the plane s equipment will respond to the order. 64 ROM laser from high to low followed by eight CRC, 48 ranks and eight family code (28H). Platform: |
Size: 2048 |
Author:yanguofei |
Hits:
Description: 使用8051单片机汇编语言，读取DS18B20的64位ROM代码，并显示在8个数码管上，数码管用CD4094驱动-Using 8051 assembly language, read DS18B20 64-bit ROM code and displayed in the 8 digital tube, the digital useful CD4094 driver Platform: |
Size: 43008 |
Author:Sailing |
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Description: 18B20数字温度显示系统
主机控制DS18B20完成温度转换必须经过三个步骤：初始化、ROM操作指令、存储器操作指令。必须先启动DS18B20开始转换，再读出温度转换值。本程序仅挂接一个芯片，使用默认的12位转换精度，外接供电电源，读取的温度值高位字节送WDMSB单元，低位字节送WDLSB单元，再按照温度值字节的表示格式及其符号位，经过简单的变换即可得到实际温度值.
-18B20 host control system, digital temperature display temperature conversion must be completed DS18B20 three steps: initialization, ROM instructions, the memory operation instructions. DS18B20 start the conversion must be started, read the temperature conversion value. This procedure is only attached a chip, using the default 12-bit conversion accuracy, an external power supply, read the temperature value high byte sent WDMSB unit and the low byte to send WDLSB of units in accordance with the temperature-byte format and representation the sign bit, after a simple transformation can be obtained by the actual temperature. Platform: |
Size: 1024 |
Author:wei |
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Description: ：提出了一种单总线上多个数字温度传感器DS18B20的自动识别方法。通过设计由译码器74LS138、二输入四
与非门74LSOOP、模拟开关CD4066组成的电路，同时应用Keil C51工具编写DS18B20数字温度传感器软件程序，在单片
机的控制下，系统以开机初始化形式获取并保存所有传感器的序列号，自动识别传感器并进行多点测温。实验结果表明，
系统能将获得的序列号与各传感器对应起来，使传感器可即装即用，实现了真正意义上的自动识别。-A method of the automatic identification of multiple DS18B20 digital thermometers on a 1一W ire bus has been offered
by designing a circuit composed of a 74LS138 decoder，two 74LS00P quad 2-input NAND gates and two CIM066 quad bilateral
switchs，and writing programs using Keil C51 for accessing these DS18B20s．Under the control of SCM ，the system reads and
stores all DS18B20s’ROM codes in the form of initialization after the system is powered on，and then identifies the thermometers
automatically and measures the muthi—point temperature．The experiment result shows a one—to—one correspondence between the
DS18B20s’ROM codes is read and the temperature measuring points，which enables the therm ometers’plug and play．So the sys—
tern realizes the automatic identification in the real sens Platform: |
Size: 248832 |
Author:翟涛 |
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Description: 读取DS18B20的序列号，只要你的电路正确，只要把程序下载进去就可以了，相当完美-DS18B20 read the serial number, if your circuit is correct, as long as the download into the can, quite perfect Platform: |
Size: 22528 |
Author:蒲森林 |
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Description: 基于51及ds18b20的温度采集系统，采用单总线协议，包括read rom和match rom。-Based on the temperature of 51 and ds18b20 acquisition system, a single bus protocol, including read rom and match rom. Platform: |
Size: 147456 |
Author:沉舟 |
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Description: DS18B20引脚功能
GND地，DQ数据总线，VDD电源电压
18B20共有三种形式的存储器资源，它们分别是：
ROM 只读存储器，用于存放DS18B20ID编码，其前八位是单线系列编码，后面48位是芯片唯一的序列号，最后8位是以上56位的CRC码。DS18B20共64位ROM
RAM 数据暂存器，数据掉电后丢失，共9个字节，每个字节8位，第1、2个字节是温度转换后的数据值信息，EEPROM 非易失性记忆体，用于存放长期需要保存的数据，上下限温度报警值和校验数据
-DS18B20 Function GND Ground pin, DQ data bus, VDD supply voltage 18B20 There are three forms of memory resources, they are: ROM read-only memory for storing DS18B20ID coding, the top eight single-family is encoded, followed by 48 is the chip serial number only, over the last eight is 56-bit CRC code. DS18B20 total of 64-bit ROM RAM data store, data loss after power-down, a total of 9 bytes, each byte 8-bit, 1, 2 bytes of temperature data converted value information, EEPROM non-volatile volatile memory for storage of long-term need to preserve data, upper and lower temperature alarm and calibration data Platform: |
Size: 9216 |
Author:袁亚楠 |
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Description: 读取Ds18B20的rom值 即读取ds18b20的本身序列号 有电路图 有程序-Value that the rom read Ds18B20 ds18b20 read the serial number itself has a program diagram Platform: |
Size: 49152 |
Author:1 |
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Description: 使用C语言编写的关于读取DS18B20温度传感器64位rom编码的程序-Read DS18B20 temperature sensor 64 rom coding procedures using the C language Platform: |
Size: 49152 |
Author:张永安 |
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Description: DS18B20温度控制1602LCD显示
主要功能：
1、显示实时温度值。
2、可以读出 DS18B20 的64位ROM码。
3、可以预设高低温报警值（可以用作温度控制）。-DS18B20 temperature control 1602LCD display main functions: 1, display real-time temperature value. 2, you can read the DS18B20 64-bit ROM code. 3, you can preset high and low temperature alarm value (can be used for temperature control). Platform: |
Size: 37888 |
Author:苏孟琪 |
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Description: 本代码能够测取DS18B20的ROM序列号，在开发多18B20传感器的时候，便于开发人员很快的读取到序列号，并把传感器挂至总线上。-This code can be measured DS18B20 take ROM serial number, and in the development of multi-18B20 sensor, easy for developers to quickly read the serial number, and the sensor is linked to the bus. Platform: |
Size: 28672 |
Author:寇水潮 |
Hits:
Search - ds18b20 read rom