】本文介绍了一个使用单片机和CPLD联合控制步进电机的方案。首先阐明步进电机的工作原理及控制方法，然后 提出了系统的软硬件设计框架，详细讨论了单片机和CPL...

从官方网站获得的CanOpen通讯协议的全部资料，已经按照内容更改文件名，这是最全的协议了-Obtained from the official website of the All CanOpen communications protocol has been changed in accordance with the contents of the file name, which is most of the protocol

这是一个ST7920液晶的串行数据发送程序如果需要发送地址的话就改动RS位为1。-This a LCD Driver serial data if this procedure addresses this need in the case of changes to the RS-1.

这是初学单片机实验程序，希望单片机初学者快点进步-This is a beginner Singlechip experimental procedures Singlechip beginners progress quickly

LCD 1602 AVR下显示驱动程序.使用的是ATMEL公司的AVR芯片ATMEGA16.只要稍加修改可以移植到其他单片机上.-LCD 1602 AVR display driver. Using ATMEL

高速电路信号完整性问题，有一定的参考价值-Based on the Signal Integrality theory, the key problem met during signal processing module design and its solution is given

用protues简单制作的4X4键盘,有图和原程序,可实现按下键显示对应的数值-Protues produced using a simple 4X4 keyboard, there are maps and the original procedure, can be pressed to display the corresponding numerical

我过龙芯二号的开发，龙芯二号的技术指标。-me for the development of the Godson-2, the Godson-2 technical indicators.

MSP430X16X子程序，希望对大家学习430单片机有用... ... ... ...!-MSP430X16X subprogram, and they hope to learn from U.S. 430 Singlechip useful ... ... ... ...!

SPI是一个环形总线结构，由ss（cs）、sck、sdi、sdo构成，其时序其实很简单，主要是在sck的控制下，两个双向移位寄存器进行数据交换。 假设下面的8位寄存器装的是待发送的数据10101010，上升沿发送、下降沿接收、高位先发送。 那么第一个上升沿来的时候 数据将会是sdo=1；寄存器=0101010x。下降沿到来的时候，sdi上的电平将所存到寄存器中去，那么这时寄存器=0101010sdi，这样在8个时钟脉冲以后，两个寄存器的内容互相交换一次。这样就完成里一个spi时序。 -SPI bus is a ring structure, by ss (cs), sck, sdi, sdo composition, its timing is actually very simple, mainly under the control of the sck and two bi-directional shift register for data exchange. Assuming the following 8-bit register is loaded to send the data to be 10,101,010, rising to send, receive falling edge, high first sent. Well, the first rising edge to the time data will be sdo = 1 register = 0101010x. Falling edge comes, sdi on the level will be stored to the register, then register at this time = 0101010sdi, so 8 clock pulse later, the contents of two registers to exchange time. This will be completed in a spi timing.

用反转法实现快速高效的4*4键盘扫描，并通过串口将按键值输出-Inversion method with fast and efficient implementation of the 4* 4 keyboard scanning, and send out the key value through the serial port