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单片机编程 linux 中断和设备驱动
linux 中断和设备驱动
本章介绍L i n u x内核是如何维护它支持的文件系统中的文件的，我们先介绍 V F S ( Vi r t u a lFile System，虚拟文件系统)，再解释一下L i n u x内核的真实文件系统是如何得到支持的。L i n u x的一个最重要特点就是它支持许多不同的文件系统。这使 L i n u x非常灵活，能够与许多其他的操作系统共 ...
单片机编程 FSL08系列单片机开发及C语言编程简介
以典型的9S08 系列为例，当你选择了一个MCU 型号后，在图1-4 右侧会显示出所有针对该型号芯片可用的项目调试场景。其中：Full Chip Simulator”是芯片全功能模拟仿真，即无需任何目标系统的硬件资源，直接在你的PC 机上模拟运行单片机的程序，在模拟运行过程中可以观察调试程序的各项控制和运行流程，分析代码 ...
单片机编程 基于LPC2104的爬壁机器人控制系统设计
首先， 简要介绍四足微型爬壁机器人的机构部分， 然后详细介绍四足微型爬壁机器人控制系统的 硬件设计， 以及实时多任务操作系统 c／os—I I在Phi¨ P s公司32位ARM处理器LPC2 1 04上的移值和控制软件的设计。
单片机编程 PCA9540B 2channel I2C bus mult
The PCA9540B is a 1-of-2 bidirectional translating multiplexer, controlled via the I2C-bus.The SCL/SDA upstream pair fans out to two SCx/SDx downstream pairs, or channels.Only one SCx/SDx channel is selected at a time, determined by the contents of theprogrammable control register.
单片机编程 PCA9519 4channel level transla
The PCA9519 is a 4-channel level translating I2C-bus/SMBus repeater that enables theprocessor low voltage 2-wire serial bus to interface with standard I2C-bus or SMBus I/O.While retaining all the operating modes and features of the I2C-bus system during thelevel shifts, it also permits extension of ...
单片机编程 PCA9544A 4channel I2C multiple
The PCA9544A provides 4 interrupt inputs, one for each channeland one open drain interrupt output. When an interrupt is generated byany device, it will be detected by the PCA9544A and the interruptoutput will be driven LOW. The channel need not be active fordetection of the interrupt. A bit is also ...
单片机编程 PCA9542A 2channel I2C bus mult
The PCA9542A is a 1-of-2 bidirectional translating multiplexer, controlled via the I2C-bus.The SCL/SDA upstream pair fans out to two SCx/SDx downstream pairs, or channels.Only one SCx/SDx channel is selected at a time, determined by the contents of theprogrammable control register. Two interrupt inp ...
单片机编程 PCA9549 Octal bus switch with
The PCA9549 provides eight bits of high speed TTL-compatible bus switching controlledby the I2C-bus. The low ON-state resistance of the switch allows connections to be madewith minimal propagation delay. Any individual A to B channel or combination of channelscan be selected via the I2C-bus, determi ...
单片机编程 DUAL DIGITAL ISOLATORS
The ISO7220 and ISO7221 are dual-channel digital isolators. To facilitate PCB layout, the channels are orientedin the same direction in the ISO7220 and in opposite directions in the ISO7221. These devices have a logic inputand output buffer separated by TI’s silicon-dioxide (SiO2) isolation barrier ...
单片机编程 PCA954X家庭的I C SMBus多路复用器与开关
The Philips family of Multiplexers and Switches consists of bi-directional translating switches controlled via the I2C or SMBus to fan out an upstream SCL/SDA pair to 2, 4 or 8 downstream channels of SCx/SDx pairs. The Multiplexers allow only one downstream channel to be selected at a time, while th ...