sdhci-pltfm

基于stm32f103的mqtt完整通信的例子，支持TLS加密通信(An example of mqtt complete communication based on STM32F103 supports TLS encrypted communication)

IIC总线协议芯片CH452驱动代码，配合数码管和按键，适合快速移植。(IIC bus agreement CH452 chip driver code, with digital tube and buttons, suitable for rapid transplantation. )

89C51的pwm程序，很好的程序呢，我试过了，还是我的作业呢。通俗易懂，希望对你有帮助。(The 89 C51 PWM program, very good program? I tried, or my homework. Easy to understand, the hope is helpful to you. )

说明：  用stm32f4开发板，通过串口命令来开关小灯(Command to turn on and off the small light through the serial port)

利用51单片机做的一个闹钟程序，可以自己设定闹铃时间(err)

说明：  纯数字电路实现打地鼠游戏，有积分功能，可以制作电路板，用的简单原件，LED，按钮等(Pure digital circuit to achieve hamster game, with integral function, can make circuit boards, simple original, LED, buttons, etc.)

51单片机实现PT100温度测量程序，采用恒流源测量原理(Realization of PT100 temperature measurement program by 51 single chip microcomputer)

8051 练习项目，包含串口、定时器、红外遥控、LCD1602、SMI串行总线读写等功能。(8051 exercise items, including serial port, timer, infrared remote control, LCD1602, SMI serial bus reading and writing functions.)

zigbee cc2530无线数据接受与发送，以外接传感器MQ-2酒精传感器为例，内置协议栈，直接下载就行，IAR版本为8.1(zigbee cc2530 wireless data accepted and sent to the external sensor MQ-2 alcohol sensor, for example, the built-in protocol stack, the direct download on the line)

说明：  对比度调节实验 背光调节实验 数字时钟实验 模拟时钟实验(Contrast adjustment experiment Backlight adjustment experiment Digital clock experiment Analog clock experiment)