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AVR atmega micro os:avrx.

12864中文说明，我认为很有用，希望关照-12864 Chinese note, I think very useful, I hope take care! ! ! !

一个AVR单片机的操作系统，有兴趣就看看吧-an operating system, are interested to see it on

优点：中断中只做很少的事情，通常我是在接收中断中post一个信号量，触发别的任务读数据-Advantages: only a small interruption in the things I usually post in the receiving a signal interruption in the amount of time to trigger other mission data

51单片机子程序-51 Singlechip Subroutine

很有参考价值的51单片机串口程序，正在搞串口的看一看-great reference value of 51 MCU procedures, is now pursuing a look at the serial port

8253的初始化程序举例: 例1：选择2号计数器，工作在3方式，计数初值为533H（2个字节），采用二进制计数。其初始化程序段为 MOV DX，307H ；命令口 MOV AL，10110110B ；2号计数器的初始化命 令字 OUT DX，AL ；写入命令寄存器 MOV DX，306H ；2号计数器数据口 MOV AX，533H ；计数初值 OUT DX，AL ；选送低字节到2号计数器 MOV AL，AH ；取高字节送AL OUT DX，AL ；后送高字节到2号计数器 -8253 initialization procedures examples : Example 1 : Select counters on the 2nd, in three ways. Counting for the initial 533H (2 bytes), a binary counting. Initialization of its procedures for MOV DX, 307H; I ordered MOV AL, 10110110B; on the 2nd Counter initialize command word OUT DX, AL; write commands Register MOV DX, 306H; data on the 2nd Counter I MOV AX, 533H; Counting initial OUT DX, AL; low-byte sent to the 2nd Counter MOV AL, AH; With a high-byte send AL OUT DX, AL; evacuations high byte counter to the 2nd

条码读入CPU 1. 与条码读入器的通讯 1.1 采用标准的UART通讯协议，波特率为9600，没有校验位，一个停止位。 1.2 通讯的过程是单工的，数据流总是从条码读入器到CPU。 1.3 正常的数据传送总是以一个换行符开始，六个数字，以一个回车符结束。 -51

用ds18b20进行温度采集并控制，十分简单，程序写进去就可以用-With ds18b20 collected and the temperature control is very simple, the program included in the family to stay with the

锯齿波产生程序 megal128 iccavr开发平台-Sawtooth generation process development platform megal128 iccavr