端口控制发光二极管亮灭。 【硬件连接】通过SPCE061A的1位I/O端口（本例中使用IOA15端口），经一限流电阻后接一个发光二极管至地
上传时间： 2014-01-12
上传用户：水中浮云
LPC214x_ LPC213x_ Sample_Code for_Keil lpc2131keil例程Example Standard I/O program for LPC2100
标签： LPC Sample_Code for_Keil Standard
上传时间： 2016-10-19
上传用户：924484786
usb控制器对I/0操作的简单例子，采用汇编语言编写。
上传时间： 2016-10-20
上传用户：comua
The Inter IC bus or I2C bus is a simple bidirectional two wire bus designed primarily for general control and data transfer communication between ICs. Some of the features of the I2C bus are: • Two signal lines, a serial data line (SDA) and a serial clock line (SCL), and ground are required. A 12V supply line (500mA max.) for powering the peripherals often may be present. • Each device connected to the bus is software addressable by a unique address and simple master/ slave relationships exist at all times masters can operate as master-transmitters or as master-receivers. • The I2C bus is a true multi-master bus including collision detection and arbitration to prevent data corruption if two or more masters simultaneously initiate data transfer systems. • Serial, 8-bit oriented, bidirectional data transfers can be made at up to 100 KBit/s in the standard mode or up to 400 KBit/s in the fast mode.
标签： bus bidirectional primarily designed
上传时间： 2013-12-11
上传用户：jeffery
i.MX27_ADS_BSP_15_Windows_Embedded_CE_6_Reference_Manual I.MX27 最新的WINCE6.0 BSP使用说明文档
标签： Windows_Embedded_CE Reference_Manual ADS_BSP WINCE
上传时间： 2014-07-02
上传用户：星仔
FIBER AND wire product designed guider.
标签： designed product guider FIBER
上传时间： 2013-11-27
上传用户：小儒尼尼奥
配合单片机I/O口，实现单片机对LCD1602的简单控制，从而实现液晶显示（包括图像显示）的功能。
标签： 单片机
上传时间： 2013-12-07
上传用户：yyyyyyyyyy
1. 本程序使用一个定时器和任意 2 个 I/O 口模拟一个串行口。 2. 1位起始位，8位数据位，1位停止位。发数据位时先发低位。 3. 支持半双工通讯。收、发波特率相同。 4. 应把定时器中断优先级设置为最高级。 5. 本程序每接收一个字节后就把它放到一个队列缓冲区中(也可使用环行缓冲区), 待缓冲区满后，将缓冲区中的内容原样发回。这是为了测试多字节连续收发的 能力和简化程序。实际应用中应防止缓冲区溢出。 6. 由接收转换到发送时要先调用 soft_send_enable ()； 由发送转换到接收时要先调用 soft_receive_enable ()。 7. 发送最后一个字节后如果要立刻转为接收，必须等待最后一个字节后发送完毕 while ( rs_f_TI == 0) // 等待最后一个字节发送完毕
上传时间： 2016-10-22
上传用户：tonyshao
This Handbook, published under the auspices of the Senior NATO Logisticians’ Conference (SNLC), i s i ntended as a simple guide to logistics i n NATO. It does not attempt to examine current i ssues or provide answers to the problems that logisticians will face, but i t rather aims at i ntroducing them to some of the basic principles, policies, concepts and organisations with which they will work.
标签： Logisticians Conference published the
上传时间： 2014-12-07
上传用户：www240697738
键盘复用与显示公用一个I/OK口，键盘复用与显示公用一个I/OK口
上传时间： 2016-10-26
上传用户：www240697738
