用于单片机的开发 用modbus协议 实现上位机与下位机的通讯

C51 LCD of meniumItC 51 LCD of meniumIt

用DP801Z制作多挡位时控式应急开关，用机器码写的-DP801Z produced using Shift-control when emergency switches, using binary write

一个单片机控制步进电机的经典例子,KEIL下直接编译,用PROTEUS仿真,欢迎大家下载!-A single-chip stepper motor control of the classic examples, KEIL compiler directly using PROTEUS simulation, welcomed everyone to download!

AT91SAM7Scpu PWM控制程序，希望对大家有帮助-AT91SAM7Scpu PWM control procedures, and they hope to help everyone

DTMF编码芯片HT9200的51接口程序。输入参数R2表示发送数据个数，输入数据与发送数据与DTMF码的关系:00H-0 01H-1 02H-2 03H-3 04H-4 05H-5 06H-6 07H-7 08H-8 09H-9 0AH-A 0BH-B 0CH-C 0DH-D 0EH-* 0FH-#。详细说明参考文件内-DTMF encoder chip HT9200 51 interface program. R2 said input parameters to send data distribution, data entry and send data with the DTMF code : 00H-0 01H- 02H-2 Mr- 3 in the 04H-4 05H-5 06H-6 07H-7 08H-8 7-9 0AH-A 0BH- 0CH B-C 0DH-D 0EH-* 0FH-#. Detailed information paper

用GSM手机控制报警器，报警器触发时可发送信息通知，并控制解防/设防。-GSM mobile phone control with alarm, triggered when the alarm notification can be sent information and control solution of anti-/ security.

8051 SIMULATOR GOOD WORK

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电子参数文档说明，他是关于avr编程的利器，偏重硬件方面。-Electronic parameters of the document shows that he is on the avr programming tool, emphasis on hardware.

红外线遥控器按键检测程序. 通过检测两次下降沿之间的时间差判断接受到的数据位. 已经通过了测试,能够正确区分出32bit数据的遥控器按键键值. 具有数据重发功能,但是数据的重发有点频繁. 使用晶震频率为11.0592MHz,所有定时值都是基于这个频率计算. 占用很少量的CPU时间,使用了外部中断0接受数据,定时器0进行计数, 定时器1作为串口的波特率发生器(Band = 9600).-Infra-red remote control button detection program. By detecting falling edge twice to determine the time difference between the received data bit. Has passed the test, could correctly distinguish 32bit data button remote control key. With data re-issued, but data a bit of re-issued frequent. Zhenyuan frequency of use of crystal 11.0592MHz, all timing values are calculated based on this frequency. occupied by small quantities of CPU time, use the external interrupt 0 to accept data, timer 0 to count, timer 1 as a string port baud rate generator (Band = 9600).