distance-measure

STM32F4+HAL库+GPS+地图值，在串口显示(STM32F4+HAL Library+GPS+Map Value, Displayed in Serial Port)

多级菜单通过1284显示！并由矩阵键盘控制(Multi-level menu through 1284 show! By Matrix keyboard control)

说明：  基于STM32F103设计的简易示波器，功能有：画时域波形及FFT波形，显示峰值及频率。(Simple oscilloscope based on STM32F103,Functions: draw time domain waveform and FFT waveform, display peak value and frequency.)

说明：  STM32F407+串口接收数据采用DMA方式 六路串口(Stm32f407 + serial port adopts DMA mode six channel serial port to receive data)

1.由上位机发送1给单片机时，蜂鸣器以400ms频率发声，发2时以200ms频率发声，发3时以100ms频率发声，发4时关闲蜂鸣器。 1.以2400bps从计算机发送任一字节数据，当单片机收到该数据后，在此数据前加上一序号然后连同此数据一起发送至计算机，当序号超过255时归零。 2.以16进制发送一个0-65536之间的任一数，当单片机收到后在数码管上动态显示出来，波特率自定。 3. 用AD以1HZ的频率采集模拟信号，然后转换成数字量，再将其以1200bps发送到计算机，在计算机上显示。 4.按下矩阵键盘第一行时以1200bps发送，1，2，3，4，第二行时以2400bps发送5，6，7，8，第三行以4800bps发送，9，10，11，12，第四行以9600pbs 发送，13，14，15，16. (1. From the PC to send a single chip, the buzzer to 400ms frequency of sound, made 2 to 200ms frequency sound, made from 3 to 100ms frequency sound, made 4 free buzzer off. 1. To 2400bps from the computer to send any byte of data, when the microcontroller receives the data in this data with a serial number before then sent along with the data to the computer, the serial numbers when more than 255 zero. 2. To send a 16-hexadecimal any number between 0-65536, when the microcontroller in the digital receipt is displayed on a dynamic, custom baud rate. 3. 1HZ with the frequency of AD in order to capture analog signals, then converted to digital, and then send it to 1200bps to the computer, the computer display. 4. Press to 1200bps matrix keyboard to send the first row, 1,2,3,4, 5,6,7,8 the second row to 2400bps send the third line to 4800bps send, 9,10,11,12 , the fourth line to 9600pbs send, 13,14,15,16. )

数字温度计 DS18B20控制的数字温度计(Digital Thermometer DS18B20 digital thermometer control)

说明：  由于超声波指向性强，能量消耗缓慢，在介质中传播的距离较远，因而超声波经常用于距离的测量，如测距仪和物位测量仪等都可以通过超声波来实现。利用超声波检测往往比较迅速、方便、计算简单、易于做到实时控制，并且在测量精度方面能达到工业实用的要求，因此在移动机器人研制上也得到了广泛的应用。(Because of its strong directivity, slow energy consumption and long propagation distance in the medium, ultrasound is often used for distance measurement, such as range finder and level gauge, which can be achieved by ultrasound. Ultrasound detection is often fast, convenient, simple in calculation, easy to achieve real-time control, and can meet the requirements of industrial application in measurement accuracy, so it has been widely used in the development of mobile robots.)

sonix 2711A 开发的移动电源源代码(mobile power source code developed by sonix 2711A)

利用sdk调用虚拟机进行脱壳的例子程序，大家可以看看，内有详细的说明文档，供大家参阅。(Sdk call virtual machine shelling the example program, we can see, with detailed documentation, for all to see.)

UCOS-ii例程，主要是消息邮箱的应用和案例。亲测可用。(UCOS-ii routine, mainly message mailbox applications and cases. The pro-test is available.)