wind_meter

stm32芯片--用GPIO口模拟I2C驱动MPU6050陀螺仪(Stm32 chip- using GPIO port simulation I2C driver MPU6050 gyroscope)

蓝牙4.0 天气温度湿度监测传感器, 使用用IT CC2540 或CIT CC2541 芯片实现.(Bluetooth V4.0 weather sensor and use IT CC2540/41 CPU to monitor remote temperature.)

基于ATMEGA64单片机驱动MCP6S21可编程程控放大器的仿真加ICC源码。(ATMEGA64 microcontroller based programmable programmable amplifier driving MCP6S21 simulation plus ICC source.)

说明：  c8051f410控制LCD12864显示，程序中包含显示汉字，图像，浮点数等子函数。液晶不含字模，本人原创。(c8051f410 control LCD12864 show that the procedures contained in display of Chinese characters, images, and other floating-point Functions. Non-matrix LCD, I am original.)

串行da模块的应用，和单片机通信，通过单片机控制da模块(Serial da module application, and single-chip communication, via da MCU control module)

基于STC51单片机使用UART串口模块通讯例子(STC51 using UART serial port module communication example)

ISD1790－C程序，用于ISD1790芯片开发的人进行参考。(ISD1790-C procedures for ISD1790 chips were developed by reference.)

说明：  HG32024005型号液晶的C51程序，里面包含不同点阵大小的汉字的显示以及图片的显示，调试成功(HG32024005 C51 LCD models procedure, which contains different character dot matrix display and the size of the pictures show, the successful commissioning)

滤波器广泛应用于数字信号处理、通信、自动控制领域,但设计可变宽频带有源滤波器则比较困难。利用单片机控制参数可编程的双二阶通用开关电容有源滤波器,精确设置有源滤波器的中心频率f，品质因数Q及有源滤波器的工作方式。本系统主要分为两个部分:即程控滤波器和程控放大器。程控放大器电压增益为40dB，通过单片机控制DA进行分压，可精确实现要求的10dB步进，误差小于0.5 ，通带为100Hz-500KHz，输入电压峰－峰值范围为10mV，在输入范围内无明显失真。由MAX264为核心的滤波器，可设置为高通、低通滤波器。通过单片机直接给出控制频率，使-3dB截止频率在1KHz-20KHz内可调，步进1KHz，误差小于1 。整个系统以52单片机为控制核心，电路简单，性能稳定，且具有较高精度，滤波参数调节通过单片机控制，较为方便。(Filters are widely used in digital signal processing, communications, automatic control area, but the design variable wideband active filter is more difficult. Control parameters using single-chip programmable universal switched-capacitor biquad active filter, active filter accurately set the center frequency f, quality factor Q and the active filter works. The system is mainly divided into two parts: the program-controlled filters and programmable amplifiers. Programmable amplifier voltage gain of 40dB, the DA through the partial pressure of single-chip control, can accurately achieve the required 10dB step, the error is less than 0.5 , passband to 100Hz-500KHz, input voltage peak- the range of 10mV, the input range no significant distortion. By the MAX264 as the core of filter can be set to high pass, low pass filter. Given directly by the microcontroller controls the frequency, the-3dB cutoff frequency at 1KHz-20KHz adjustable, step 1KHz, error is less than 1 . The entire system for)

说明：  MAX31856测试程序，MSP430F5342通过端口模拟SPI总线操作MAX31856,并将采集到的数据通过UCA1串口发送.硬件上采用隔离电源,隔离通讯接口.多路热电偶信号经多路电子开关选通后再采集.仅供参考,实验室调试通过,未投入实用. 压缩包内容: 1.MSP430程序源代码.包括测试程序及加了协议的多路采集程序. 2.硬件电路图.PDF格式,包括电路板原理图,PCB布局图,元件清单. 3.MAX31856芯片手册及官方例程. 4.PC端程序(通讯协议仿的迅威科技8通道热电偶温度变送器的协议,所以他们的PC端测试程序应该也是可用的) 整理时间:2020年4月15日(MAX31856 test procedure, MSP430F5342 simulates the SPI bus to operate the MAX31856 through the port, and converts the collected data to serial transmission through UCA1. The hardware uses isolated power supply and isolated communication interface. Reform reference, laboratory debugging passed, not occupied practical. Compressed package content: 1. MSP430 program source code. Including test procedures and multi-channel acquisition procedures with added protocols. 2. Hardware circuit diagram. PDF format, including circuit board schematic diagram, PCB layout diagram, component list. 3. MAX31856 chip manual and official routines. 4. PC-side program (the communication protocol is a copy of the Xunwei Technology 8-channel thermocouple temperature threshold protocol, so their PC-side test program should also be available) Arrangement time: April 15, 2020)