TJA1050

一个倒车雷达的程序 使用的是AVR单片机。 在include.h文件里面定义 #define CPU_F 4 //4MHZ 定义外晶振的频率 #define GOOD //40KHZ更准确 #define DIS150CM //若定义了，1.5M有效，没有定义就是2.5M有效 #define DEBUG //若定义了，则是调试模式debug , 没定义就是release模式 (Include.h document in which the definition of# define CPU_F 4// 4MHZ definition of the frequency of oscillator# define GOOD// 40KHZ more accurate# define DIS150CM// if defined, 1.5M effective, efficient 2.5M is not defined# define DEBUG// If defined, it is debug mode debug, not release model is defined as)

说明：  AVR芯片学习开发培训资料，最小系统板原理与布局(AVR Chip Learning and Development Training Materials, Minimum System Board Principle and Layout)

说明：  PID control texas insturement

51单片机的pid程序，设定上下限，控制pwm的输出。(51 MCU pid procedures set upper and lower limits, control pwm output.)

OLED0.91显示的USB电压电流表程序，方便测试USB的电压电流情况(OLED 0.91 shows the USB voltage meter program to facilitate the test voltage and current situation of USB)

说明：  无线通信接受模块程序，内含数模转换应用程序。(Wireless receiving module program that includes digital to analog conversion applications.)

说明：  100% 可以运行的温湿度显示软件，数据保存在数据库之间的通信 串口通信(100% operational temperature and humidity display software, data stored in the database communication serial port)

松翰SN8P2711入门学习笔记，2711的各种资源学习及相关代码(SONIX SN8P2711 entry learning notes, 2711 of all kinds of resources learning and related code)

ADS 0.18um library which have all kind of mosfet you need

this file is manual about rs-485