trafficlight

说明：  一个万能的键盘扫描程序，采用宏定义的方式屏蔽了硬件，能够非常方便地移植到任何一款MCU上(A universal keyboard scanning procedures, the use of macro way of shielding the definition of the hardware, can be easily ported to any MCU on a)

Applications of Zigbee Wireless Frequency Dec13

实现LCD12232的点阵显示功能。这是在网络上发现比较好的，发布出来共享(It can let LCD12232 display it s record.It is found on net , for sharing.)

说明：  NRF51822相关的API相关的代码，不是很完整，希望有帮助(NRF51822 related API related code, not very complete, I hope to help)

　　　锅炉是工业过程中不可缺少的动力设备，为确保安全，稳定生产，对锅炉的自动控制十分重要。汽包水位是锅炉运行的主要指标，汽包水位过高过低都会影响运行的安全与经济性，必须严格加以控制。本文主要是用MATLAB对锅炉汽包水位控制系统进行仿真研究。建立了锅炉汽包水位对象的数学模型和控制系统，并用Matlab语言在计算机上编制锅炉汽包水位控制系统的仿真程序。通过对象特性、最佳PID参数整定、控制系统比较分析，了解了汽包水位对象特性、整定出了最佳PID参数、总结出了各种控制方案的特点与适用场合。 (　　　Boiler is a necessary power plant in the process of industry. In order to ensure the production and security, the auto-control of it is very important. The drum water level is an important variable to be controlled, it is hard to get the mathematic model of the water level with adjustive process, it is characteristic of nonlinearity, instability and time lag. The traditional control mode of three-variable in the drum water level mostly use PID.The problem of automatic control in industry coal-fired boiler is discussed in this thesis. First of all，the technological process and characteristics of industry boiler is analyzed. The task of boiler regulator is expounded. And then the system scheme of control is presented. The dynamic characteristic of loops for water level is analyzed especially the reason of ostensible water level. On the basis of these a routine PID controller is designed to control the water level. The part of differential is sensitive to high frequency noise, and easi)

ADIS16260 ADIS16265 Programmable Digital Gyroscope Sensor Driver.

说明：  STM32F103芯片用自带AD采集，10路ADC通道采集，通过DMA进行数据传输并在LCD上进行显示(STM32F103 10 ADC channels acquisition, data transmission through DMA and display on LCD.)

为快速傅里叶变换用c语言在51单片机中实现(Realization of Fast Fourier Transform with C Language in 51 Single Chip Microcomputer)

STM32驱动MS5611读取温度气压值，并在LCD屏显示。(STM32 drive MS5611 to read temperature, air pressure, and display in the LCD screen.)

单片机可用的I2C接口代码，已在altera Nios II验证通过(I2C interface code, has been verified in the NiosII Altera)