X2-Software

利用单片机实现温湿度采集和SPI进行通信，结果能够实现(Using single chip microcomputer to realize temperature and humidity acquisition)

电力系统中配电网络的距离保护模型，可用于分布式电源并入后的保护方案(Distance protection model power system distribution network can be used for distributed power protection program incorporated )

大多数自行车速度表工作通过使用霍尔效应传感器固定在自行车前叉。磁铁是附加到前轮上的辐条之一,它将与霍尔效应开关一次革命的车轮。速度计监测传感器计数轮革命。如果知道车轮的直径,距离可以很容易地计算如果你知道有多少革命的车轮。此外,如果时间完成革命,平均速度也可以计算出来。 对于这个问题,您将编写一个程序来确定总距离(英里)和平均速度(英里每小时)考虑到车轮直径,革命的数量和总时间的旅行。你可以假定前轮从未离开地面,并没有下滑或打滑。(Most bicycle speedometers work by using a Hall Effect sensor fastened to the front fork of the bicycle. A magnet is attached to one of the spokes on the front wheel so that it will line up with the Hall Effect switch once per revolution of the wheel. The speedometer monitors the sensor to count wheel revolutions. If the diameter of the wheel is known, the distance traveled can be easily be calculated if you know how many revolutions the wheel has made. In addition, if the time it takes to complete the revolutions is known, the average speed can also be calculated. For this problem, you will write a program to determine the total distance traveled (in miles) and the average speed (in Miles Per Hour) given the wheel diameter, the number of revolutions and the total time of the trip. You can assume that the front wheel never leaves the ground, and there is no slipping or skidding.)

这个源码是利用STM32驱动COG128128，并让其显示常用ASCII码字库的例子。液晶使用的控制器是UC1617，STM32使用的是R8T6。由于UC1617每次发送一个字节数据是写入4个像素点，而不是普通的8个像素点，所以传统的液晶驱动无法匹配普通字库生成软件生成的字库，在这个例子当中，通过修改底层通讯驱动的方式来“曲线救国”，实现可以在UC1617驱动下的COG128128液晶屏幕上调用字库显示。(This source is the use STM32 drive COG128128, and let it display the ASCII character common examples. LCD controller using the UC1617, STM32 using R8T6. Since UC1617 each time you send a byte of data is written to four pixels, rather than ordinary 8 pixels, so the traditional LCD driver can not match the general character generation software to generate the font, in this example, by modifying the underlying communication driven approach to "Quxianjiuguo" and realize you can call on COG128128 character driven LCD display screen UC1617.)

基于ARM9的星际漫游机器人，能够自主循迹，碰到障碍物后会自动返回(ARM9-based the interstellar roaming robots, autonomous tracking, automatically returns after tripping over obstacles)

51单片机开发入门与典型实例书籍源码，示例源程序注释清晰易懂，是51单片机开发入门非常好的实例程序(51 asm example program)

采用ds18b20测温，采用数码管显示，汇编(To adopt ds18b20 temperature measurement, digital display, assembly)

stm32数组转二进制工具，在Keil下运行 1.输入文件内容必须包含类似于{0xff,0xff}这样的c语言数组格式，才能正常转换。大括号和前导符“x”是必须的。 2.支持8位和16位数据。 3.支持4个字节的长宽信息，方便Image2Lcd程序输出的图片转换成Bin。 4.支持成对“/”符号包含注释信息，若文件内容只有单个“/”,后果自负。 5.支持头四个字节的宽高信息互换存储位置。(stm32 array to binary tools, running in Keil 1 input file must contain similar {0xff, 0xff} c language such array format to normal conversion. Braces and leading character "x" is a must. 2 supports 8-bit and 16-bit data. 3 supports 4-byte length and width information to facilitate Image2Lcd program output image into Bin. 4 support paired "/" symbol contains annotation information, if only a single file contents "/" peril. 5 support the first four bytes wide exchange of information stored in a high position.)

由区号查询经纬度，进而计算出日出日落时间的源码实现，精度与日梭万年历相比，最多差一分。 查表用到二级指针，可以学习其用法。(sunrise ,sunset)

说明：  注:protel电路图 1.INPUT12为高压气压和低压压传感器输入端. 2.OUTPUT为充气输出控制端. 3.当高低压有接地信号时,电机正转,气阀打开. 4.INPUT2低气压时有信号时,充气OUTPUT输出,充气电机转. 5.RS1与RS2是调节阀门距离用地 6.RS3是与气阀电机同步时,是气阀电机的转动圈数传感器. 7.RS4是调节延时时间用地(Note: protel circuit 1.INPUT12 and low-voltage high-pressure pneumatic pressure sensor input. 2.OUTPUT output control for the inflated side. 3. When the high and low pressure have a grounding signal when the motor is transferred, the valve opens. 4.INPUT2 low pressure when there is signal output OUTPUT inflatable, inflatable motor switch. 5.RS1 and RS2 is the regulator valve from the land 6.RS3 synchronous motor with the valve, the valve motor is rotating circle the number of sensors. 7.RS4 delay time to regulate land)