SUMSING

freettos的最小系统移植，亲测能编译成功，使led灯周期闪烁(freertos ,stm32f103,keil5,c++)

说明：  giai ma DTMF bat so dien thoai goi den bang ic chuyen dung.

实时时钟芯片DS1305用AVR90usb1287显示读秒的测试程序，对初学单片机的接触实时时钟的很有帮助(The test program for real-time clock DS1305 with AVR at90usb1287, very helpful for learner of AVR microcontroller )

说明：  51单片机驱动步进电机电路及程序 内容详细，通俗易懂，很值得(51bujindianji)

通过定时器控制pwm输出，进而控制电机舵机的转动。(The output of PWM is controlled by a timer, and then the rotation of the motor steering gear is controlled.)

基于51单片机，核心模块mt8880实现的无线电话应急系统，插上电话线，实现报警功能（向手机拨打电话）(Based on 51 MCU the core module mt8880 achieve wireless telephone emergency system, plug in the phone line, alarm function (the phone call))

说明：  学习STM32的基础例程，对初学者很有帮助，主要是对DMA的基本操作(Learning the basic routine of STM32 is very helpful for beginners, mainly for the basic operation of DMA)

说明：  STM32F103C8T6双机通过TJA1050实现CAN通信，在原有工控板开发程序基础上增加了一点注解以及通过OLED显示效果，串口打印，实测已调通。(Stm32f103c8t6 dual computer realizes can communication through tja1050. Based on the original development program of industrial control board, a little annotation is added and OLED display effect, serial port printing and actual measurement have been adjusted.)

一个以太网帧解析程序，实现以下功能：解析已封装好的Ethernet V2.0帧封装文件（见附件），判断有多少个帧，每个帧的所有字段内容，检测CRC校验是否正确(An Ethernet frame analysis program, the following functions: parsing the encapsulated Ethernet V2.0 frame encapsulation (see annex), to determine the number of frames, each frame contents all fields to detect CRC checksum is correct)

这是ep9315单板计算机的at24c64的驱动程序源代码，希望大家喜欢(This is a single board computer ep9315)