单片机双机通讯(方式1) 单片机双机通讯(方式1)

应用背景AM2321是广州奥松电子生产的数字式温湿度传感器。虽是国产品牌，其精度也可以与国外的主流温湿度传感IC媲美。美中不足：与国外同精度产品相比，AM2321的重复性和漂移指标偏大；只能手动焊接，量产时会很不方便。关键技术 AM2321支持5V工作，将电源、地、SCL、SDA四个管脚直接与开发板子的对应管脚相连。对于Arduino UNO，I2C总线的SDA信号线对应A4管脚，SCL时钟线对应A5管脚。之后，SCL、SDA线需要通过上拉电阻连接到5V电源，电阻值可取4.7k或10k。 IIC总线　LCD１６０２显示，ｕａｒｔ串口上传

S08例程：本程序是I/O模块的例程，所用资源为单片机通用IO接口，所接器件为LED灯， 其中D2与PTA0，D3与PTA1相连接！-S08 routines: this process is I/O modules, routines, resources used for the single-chip general-purpose IO interface, the access device for the LED lights, which D2 and PTA0, D3 and PTA1 connected!

avr下最小化的printf函数，可以输出八进制与十六进制数值。-avr小printf 私 十

很好的数字电路设计ppt，完整的包含了数字电路设计的所有内容，-Good digital circuit design ppt, complete digital circuit design contains all the content,

本系统利用集成智能温度传感器测量温度，采用光纤传输温度信号。系统由单片机（HT46R24）控制温度传感器（DS18B20）的温度采集。当有采集温度的指令的时候，才启动温度传感器并采回其数据，在没有进行温度采集的时候，将通过抬高温度传感器的地，关断其工作电源，如此可以降低系统的功耗。系统将每一次采集回来的数据与前一次的数据比较，若温度变化超限或温升超标，立即发送上述温度值；否则，累加到采集了一定的次数，再向主机发送最新温度值。-The system uses an integrated smart temperature sensors measure temperature, using optical fiber transmission temperature signal. System consists of microcontroller (HT46R24) controlling the temperature sensor (DS18B20) the temperature of collection. When a collection of instructions, when the temperature before start-up temperature sensors and taken back to its data, collected in the absence of the temperature when the temperature sensor will raise, the turn-off the power of their work, so you can reduce system power consumption. The system will come back every time collecting data and previous data comparison, if the temperature changes or temperature exceeding overrun immediately send the temperature value otherwise accumulate to collect a certain number of times, again

很好的51显示程序!做为一个人机对话,HAO-51 shows a very good program! As a man-machine dialogue, HAO

基于TI公司的温度传感器TMP175，该芯片是基于IIC协议读温度的，CPU是TI的MSP430F149,开发环境为IAR-Based on TI" s temperature sensor TMP175, the chip is based on the IIC protocol read temperature, CPU is TI" s MSP430F149, development environment for the IAR

可采集MBF指纹传感器图像，存储成BMP格式以供进一步处理。程序可用于嵌入式系统或PC机。-MBF Fingerprint sensor can capture images and store into a BMP format for further treatment. Procedures can be used in embedded systems or PC.

用OV7720制作摄像头的详细电路原理图 ，以及初始化代码，使用范例。-OV7720 camera with the production of a detailed circuit schematic diagram, as well as initialization code, the use of examples.

bootloader software programmed into the Philips P89V51RD2 and P89LV51RD2 microcontrollers