DS1307 RTC 使用 8051 通过 I2C 协议

stm32f103,实现U盘功能，将需要存储的程序放在外部flash中，并含有AD采集部分的程序

嵌入式系统的TCP、IP 协议栈说明书，具体讲述了什么是TCP、IP协议-The instructions of embeded system s TCP/IP,here descrab what is the TCP/IP

就是个译码器，用cpld实现的译码器是verilog写的-Is a decoder, using CPLD realize the decoder is written in Verilog

The PCF7991AT is a fully integrated Advanced Basestation IC, ABIC, designed for car immobilizer systems providing read and write access to an identification transponder. The device is intended for use with the NXP transponder family (PCF79xx) as well as other transponder types operating at 125 kHz and employing ASK, Amplitude Shift Keying for write and AM/PM for the read operation. The receiver characteristics (amplifier gain,filter cutoff frequencies) can be optimized to system and transponder requirements. The PCF7991AT IC is designed for easy integration into immobilizer read/write and read-only systems featuring a high degree of integration and very low external component count. The device integrates a powerful antenna driver/modulator, a low-noise adaptive sampling time demodulator, programmable filters/amplifier and digitizer, required to design high-performance basestations. A three wire microcontroller interface is provided for programming the PCF7991AT as well as for th

MBE-PLC驱动仿真器MBserv,MB E-PLC驱动仿真器MBserv-MBE-PLC driven simulator MBserv

周立功D12开发板中带的WINDOWS XP驱动程序，在编译后会出现USB设备不能正常工作. 以下是修改的代码,修改后可以正常工作. 在d12.c和Ioctl.c中, 将+256去掉,这个会引去枚举设备时,设备描述符的长度不对,修改后: siz = sizeof(USB_CONFIGURATION_DESCRIPTOR) 在d12.c中的D12_SelectInterface函数中, 设备查询完接口后有一段代码,也会引起驱动返回不对,需要屏蔽下面的代码 // Retrieve the selected Configuration and Interface 修改上面两处后,USB可以正常使用了. -weeks D12 development board, who were brought to the Windows XP drivers, the compiler will happen after the USB device not working properly. Following is the revised code, revised after normal work. In d12.c and Ioctl.c, 256 will be removed, this will generate to Enumerate equipment located descriptors up the length wrong, the revised : not = sizeof (USB_CONFIGURATION_DESCRIPTOR) in the D12_SelectInterface d12.c function, equipment End interface for a period after the code can also lead to wrong drivers need to shield the following code// Retrieve the selected Configuration Interface and the above two changes, USB can use the normal.

LINUX44B0I2C驱动验证过 现在可以用 是中断方式的驱动-LINUX44B0I2C drive can now be verified by way of the drive is interrupted

嵌入式linux打印机驱动EPSON系列-Embedded Linux printer driver EPSON Series

基本成功。 收到数据时，能点亮一个led。 单片机 STC12C5260S2   1T 延时用的是单片机小精灵 stc1T 模式编写 2011.1.8上午，发送程序已做部分优化，优化了延时，使延时更加短。 2011.1.8下午，接收程序已做部分优化，优化了延时，使延时更加短。 2011.1.9晚上定稿。此程序全部用查询法，此后将进行优化，用中断进行处理。 ///////////////////////////////////////// /////////////////////////////////////////

Montavista公司2004年讲稿，介绍该公司的客户解决方案。-Montavista script in 2004, introduced the company"s customer solutions.