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说明：  正点原子STM32F103精英板按键外部中断例程(Punctual Atom STM32F103 Elite Panel Key External Interruption Routine)

开发环境IAR STM8S003驱动RN8209，对RN8209寄存器读写 可以通过UART将RN8209的寄存器值发送到上位软件，波特率9600(IAR for STM8S STM8S003 R/W RN8209)

说明：  使用STM32实现AD8803的adc电压输出(ADC Voltage Output of AD8803)

基于51单片机的三机通信，包括主从机原始代码。(Based on 51 single-chip three-machine communications, including master-slave original code.)

使用stm32f4搭载ov7725，进行图像读取与数据处理，能稳定显示在lcd显示屏上，并且提取黑线(The use of stm32f4 equipped with ov7725, image reading and data processing, can be stably displayed on the LCD display, and extract black lines)

用ATMEGA48制作低成本高精度的数字温度计(ATMEGA48 produced with low-cost high-precision digital thermometer)

说明：  使用STM32F103C8T6系统板，通过两个NRF24L01模块实现无线通信，将光电二极管驱动电路采集到的荧光强度值无线传输到上位机的串口软件显示出来。(Using stm32f103c8t6 system board, wireless communication is realized by two nRF24L01 modules, and the fluorescence intensity value collected by the photodiode driving circuit is wirelessly transmitted to the serial port software of the upper computer to display.)

// This program accesses a SPI EEPROM using polled mode access. The F06x MCU // is configured in 4-wire Single Master Mode, and the EEPROM is the only // slave device connected to the SPI bus. The read/write operations are // tailored to access a Microchip 4 kB EEPROM 25LC320. The relevant hardware // connections of the F06x MCU are shown here:

msp 430 使用sd卡制作的mp3播放器。spi数据传输。(mp3 player with msp430f149 and sd card for memory.)

好书共享-《实例解读51单片机完全学习与应用》，全实例教学，难得的好教材。(Book Share- Instance interpretation of the 51 single-chip fully learning and teaching of all examples, a rare good material.)