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本实验利用8253做定时器,用定时器输出的脉冲控制8259产生中断
在8259中断处理程序中,对时、分、秒进行计数,在等待中断的循
环中用LED显示...
本实验利用8253做定时器,用定时器输出的脉冲控制8259产生中断
在8259中断处理程序中,对时、分、秒进行计数,在等待中断的循
环中用LED显示时间。
8253用定时器/计数器1,8253片选接CS4,地址为0C000H。8253时钟
源CLK1接分频电路的F/64输出。分频器的Fin接4MHz时钟。8253的
GATE1接VCC。
8259中断INT0接8253的OUT1,片选接CS5,地址为0D000H。
显示电路的KEY/LED CS 接CS0,地址为08000H。-In this study, the use of 8253 to do the timer, using timer pulse output control 8259 generates an interrupt in 8259 interrupt handler, for hours, minutes and seconds count, waiting for interruption through ring using LED display time. 8253 with the timer/counter 1,8253 chip select access CS4, address 0C000H. 8253 clock source CLK1 of the F/64 then divider circuit output. Fin then 4MHz clock divider. 8253" s GATE1 then VCC. 8259 interrupt INT0 then 8253" s OUT1, chip select access CS5, address 0D000H. Display circuit of the KEY/LED CS access CS0, address 08000H.
- 2023-08-26 17:40:04下载
- 积分:1
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51单片机红外编码解码的源代码,欢迎下载
51单片机红外编码解码的源代码,欢迎下载-51 MCU infrared codec source code, please download the
- 2022-03-18 21:48:09下载
- 积分:1
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UTF8和GB2312互转
查表法,纯C语言写的 UTF8和GB2312互转.这里面没有使用到任何的类库,方便嵌入式开发。不需要什么何的头文件之类的声明Table method, pure C language UTF8 and GB2312 referrals which there is no use to any library, to facilitate embedded development. What"s the need to declare any class header file
- 2022-03-12 00:46:35下载
- 积分:1
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avr usb 开发教程 avr usb 开发教程
avr usb 开发教程 avr usb 开发教程
- 2022-09-22 17:55:02下载
- 积分:1
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这个程序运行在CCstudio平台上,所用语言为c语言,完成的功能是电机pwm对称变换...
这个程序运行在CCstudio平台上,所用语言为c语言,完成的功能是电机pwm对称变换-This program runs in CCStudio platform, the language used for the c language, the function of the completion of the electrical symmetry transform pwm
- 2023-02-11 06:05:03下载
- 积分:1
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AT91M42800A
AT91M42800A-INT例子,很好用的!-AT91M42800A-INT examples of good!
- 2022-06-18 22:35:12下载
- 积分:1
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该驱动程序是针对2410开发板的LED灯的驱动,内附驱动测试程序。Linux内核源码版本2.6.18.4...
该驱动程序是针对2410开发板的LED灯的驱动,内附驱动测试程序。Linux内核源码版本2.6.18.4-The driver is a 2410 development board for the LED lamp driver, enclosing the drive test procedure. Linux kernel source code version 2.6.18.4
- 2022-02-11 22:02:11下载
- 积分:1
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arm_ads-44B 程序原代码,适合嵌入式开发的调试工作学习。
arm_ads-44B 程序原代码,适合嵌入式开发的调试工作学习。-arm_ads-44B program source code, suitable for debugging embedded development work and study.
- 2022-09-17 21:50:03下载
- 积分:1
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altera的usb下载线的制作资料,内含原理图、编程文件、文档资料等,很全的资料。...
altera的usb下载线的制作资料,内含原理图、编程文件、文档资料等,很全的资料。-altera download of usb-line production of information, including schematics, programming files, documentation, etc., it is the whole information.
- 2022-12-28 00:30:04下载
- 积分:1
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数字密码锁设计的源代码,喜欢的朋友就下载.
数字密码锁设计的源代码,喜欢的朋友就下载.-password lock design of the source code, like the friends on the download.
- 2022-06-14 03:33:59下载
- 积分:1