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J1939 protocol description

说明：  用mcs-52系列单片机实现等精度频率测量，T1引脚接被测TTL信号，晶振22.1184MHz，对任何频率都可以实现很高精度的测量（精度<1 )，结果从串口字符串输出，波特率115200，可以用串口调试器观察结果.(With mcs-52 family of single chip and other precision frequency measurement, T1 pin then measured TTL signal, Crystal 22.1184MHz, any frequency can be achieved very high accuracy of measurement (precision<1 ), the result string from the serial output , baud rate 115200, serial debugger can observe the results.)

单片机用P1口显示红外遥控器的按键值，单片机的应用(Display the key value of the infrared remote control, microcontroller MCU with P1 port)

基于EFM32G890F128的IIC读写外部EEPROM器件24AA024的工程文件。(Based EFM32G890F128 IIC reading external EEPROM device project file 24AA024' s.)

This is AS1130 Datasheet

PIC Microcontroller project Door lock with PIC16f84a

STM32F107的单片机，针对红外遥控解码，我们已经使用过(STM32F107 infrared remote control code)

单片机初学者资料 51单片机C语言编程入门(详讲版)(Singlechip beginners )

通过DS18B20读取温度（范围-55C~125C，精确到小数点后一位），通过4位数码管显示出来。 当温度为正且百位为零时，不显示，当温度为负时百位显负号。当温度百位和十位都为0时0都不显示。(Read through the DS18B20 temperature (range-55C ~ 125C, accurate to one decimal), through four digital tube display. When the temperature is zero and 100, do not show, when the temperature is significantly negative at minus 100. When the temperature is 100 and 10 are not displayed 0:00.)

STC51的串口程序，通过STC51工具连接电脑可以用串口助手模拟(STC51 UART)