shumaguan

常见的单片机操作，IO，中断，定时器，低功耗模式等(io, interrupt, timer, low power mode and so on)

说明：  自动检测校车内的遗漏人员，然后通过GSM短信发送给相关负责人，并且在校车内发出语音，提示学生尽快离开(Automatically detect the missing person in the school bus, then send it to the relevant person in charge via GSM SMS, and send voice in the school bus to remind students to leave as soon as possible)

用89C51单片机控制的直流电机C语言程序，程序简单有中文解释！(89C51 microcontroller with the control of DC motor C language program, the program simple to explain in Chinese!)

利用51单片机结合超声波模块，编写的测距触发系统，程序可移植性好，具有人机界面，选用市售4脚传感器结合51机就可模拟，硬件简单。(The obstacle detection unit 51)

8通道24位AD转换器ADS1218操作函数，包含寄存器设置和flash操作。(8-channel 24-bit AD converter ADS1218 operating functions, including register settings and flash operation.)

该程序为初学者学习单片机时使用的60S倒计时程序，可将开程序用在proteus软件上进行仿真，我试过可行的~(The program for beginners to learn the use of single-chip microcomputer of the 60S countdown procedures, can be used in open procedures proteus simulation software, I tried to possible ~)

陀螺仪6050测试角速度与角加速度，对角度进行积分运算求出角度，12864对其进行显示(6050 gyro angular velocity and angular acceleration of the test, the angle obtained by integrating the operation angle, 12864 displays it)

W25N01芯片驱动，适用于STM32连接外设SPI_Flash芯片的存储。(W25N01 chip driver.It is suitable for the storage of SPI_Flash chips on STM32 connected peripherals.)

说明：  基于51单片机的简易交通灯的设计，能够实现简易交通灯功能。(Design of Simple Traffic Light Based on 51 Single Chip Microcomputer)

其原理很简单，就是MSP430F14x系列单片机Timer A模块有一个比较/匹配功能，利用这一功能可以输出任意频率、任意占空比的方波，把这些方波输给蜂鸣器就可以播放了。当然要让蜂鸣器播放《最炫民族风》，最大的挑战是写C语言版的“乐谱”。所幸小时候学过五六年的小提琴，再加上物理竞赛的背景，因而对于乐谱、乐理、音频、节奏等等关键概念都略懂一二。废话不多说了，直接上源代码： (The principle is very simple, is MSP430F14x Series MCU Timer A module has a compare/match function, the use of this feature can be output at any frequency, arbitrary duty cycle square wave, square wave lost these can play a buzzer. Of course, to make the buzzer play " the most unusual national wind" , the biggest challenge is to write C-language version of " music." Fortunately, the child learned the violin in 2056, coupled with the physical contest background, and thus for sheet music, music theory, audio, rhythm, etc. have little knowledge of twelve key concepts. Ado, directly on the source code:)