modbus 通讯程序 物理层rs

< AVR C语言的应用>>第九章中的例子 用ATmega1280 在IAR Embedded Workbench IDE平台编译连接通过的12个程序 -< > Example of the ninth chapter in the ATmega1280 with IAR Embedded Workbench IDE compiler platform to connect through the 12 procedures

atmega8的关于LED的代码，我自己写的，晶振是11.0592M的。-atmega8 on the LED code, I wrote it myself, crystal is the 11.0592M.

可用的MSP430JTAG调试器，含protel格式的电路图和PCB图-available MSP430JTAG debugger, Protel format with the circuit and PCB plans

为了进一步理解上述方法如何在编程中得以实现，在此提供了1个用C51单片机编程语言编制的8个按键的键处理程序，以供参考。该程序在KEIL C51 V6.02/uVsion2 demo编译环境下编译通过-In order to further understand how the above method to realize programming, provided in the C51 single-chip microcomputer with a programming language produced by the eight key key procedure for reference. The program in the KEIL C51 V6.02/uVsion2 demo compiler compiler environment through

CAN控制单片机扩展板电路原理图，比较实用。-Single-chip CAN to control the expansion of the circuit board schematics, more practical.

采用高发射功率红外光电二极管和高灵敏度光电晶体管组成。 光缝宽度（分辨率）有0.8mm、0.4mm两种。-High transmit power infrared photodiode and high-sensitivity phototransistor. Optical slit width (resolution) of 0.8mm, 0.4mm two kinds.

以比较匹配A达到时交替输出高低电平及写入其维持 时间常数之方法实现脉宽调制输出-to compare A match reached the turn at the high output and low-level maintenance time into their methods to achieve constant PWM Output

12864的汉字驱动程序，里面包含了一个KEIL工程，可以直接编译-12864 driver of the Chinese characters, which includes a KEIL engineering, can be directly compiled

用单片机构成高精度PWM式12位DA，网上下的，很实用。-with high accuracy microprocessor PWM 12 DA, the Internet and practical.

口调试助手源程序AVR单片机在线编程下载线电路图,PCB图及HEX文件.zip- The mouth debugs the assistant source program AVR monolithic integrated circuit on-line programming downloading line circuit chart, the PCB chart and the HEX document zip