【摘要】：隨著技術(shù)的不斷進(jìn)步，在計(jì)算機(jī)及相關(guān)設(shè)備中，觸摸屏開(kāi)始逐漸取代鼠標(biāo)-鍵盤等傳統(tǒng)輸入設(shè)備成為主流的人機(jī)交互方式。自蘋果公司發(fā)布iPhone和iPad系列產(chǎn)品之后，觸摸屏技術(shù)開(kāi)始日益成熟。觸摸屏以其快捷的操作方式、靈敏的反應(yīng)速度、簡(jiǎn)潔的設(shè)計(jì)風(fēng)格等眾多優(yōu)點(diǎn)開(kāi)始在工業(yè)和生活中迅速普及。本文是基于FPGA技術(shù)實(shí)現(xiàn)的TFT觸摸屏的顯示和控制系統(tǒng)。選用Altera公司提供的DE0做為開(kāi)發(fā)平臺(tái)，硬件主控FPGA芯片為平臺(tái)上颶風(fēng)III EP3C16F484C6，通過(guò)DE0上GPIO口外接四線電阻式觸摸屏，然后采用SOPC進(jìn)行軟硬件協(xié)同設(shè)計(jì)。在硬件方面對(duì)基本的硬件資源、ILI9325、ADS7843和SD卡各個(gè)端口的功能、特點(diǎn)和工作模式做了分析，并在SOPC Builder中對(duì)各個(gè)端口的詳細(xì)配置做了說(shuō)明。在軟件驅(qū)動(dòng)方面，使用C語(yǔ)言著手編寫了ILI9325、ADS7843和SD卡的驅(qū)動(dòng)控制程序，并做了簡(jiǎn)單控制界面開(kāi)發(fā)。在軟件驅(qū)動(dòng)設(shè)計(jì)中重點(diǎn)對(duì)觸摸屏?xí)鴮懫�，抖�?dòng)以及散點(diǎn)的問(wèn)題進(jìn)行了深入研究。針對(duì)這些問(wèn)題分別采用校正，，延時(shí)和濾波方法加以解決。同時(shí)對(duì)濾波算法進(jìn)行改進(jìn)，在采樣點(diǎn)數(shù)較少的情況下，仍能保證觸摸屏?xí)鴮懙姆�(wěn)定性和準(zhǔn)確性。 在SOPC軟硬件協(xié)同設(shè)計(jì)下，實(shí)現(xiàn)了從SD卡中讀取圖片數(shù)據(jù)并在觸摸屏上顯示以及在觸摸屏上書(shū)寫的功能。同時(shí)，設(shè)計(jì)的軟件界面能夠控制圖片切換。從設(shè)計(jì)結(jié)果可以看出圖片顯示清晰，圖像切換迅速。在經(jīng)過(guò)延時(shí)和濾波處理后，可以看到散點(diǎn)基本消除、書(shū)寫平滑流暢。
[Abstract]:With the development of technology, touch screen has gradually replaced the traditional input devices such as mouse keyboard to become the mainstream of human-computer interaction in computer and related devices. Touch-screen technology has matured since Apple released its iPhone and iPad family of products. Touch screen with its quick operation, sensitive response speed, simple design style and many other advantages began to rapidly spread in industry and life. This paper is a TFT touch screen display and control system based on FPGA technology. The DE0 provided by Altera company is chosen as the development platform, the hardware master FPGA chip is used as the platform, and the hurricane III EP3C16F484C6, is connected to the four-wire resistive touch screen through the GPIO port on the DE0, and then the hardware and software co-design is carried out by using SOPC. In the aspect of hardware, the basic hardware resource, the function, characteristic and working mode of each port of ILI9325,ADS7843 and SD card are analyzed, and the detailed configuration of each port is explained in SOPC Builder. In the aspect of software drive, the driver control program of ILI9325,ADS7843 and SD card is written with C language, and the simple control interface is developed. In the design of software drive, the problems of writing deviation, jitter and divergence of touch screen are studied in detail. To solve these problems, correction, delay and filtering methods are adopted respectively. At the same time, the filtering algorithm is improved to ensure the stability and accuracy of touch screen writing. Under the co-design of SOPC software and hardware, the function of reading picture data from SD card and displaying it on touch screen and writing on touch screen is realized. At the same time, the software interface designed can control the picture switching. From the design results can be seen that the picture is clear, image switching quickly. After delay and filtering, you can see that the scattered point is basically eliminated and the writing is smooth and smooth.
【學(xué)位授予單位】：河北大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類號(hào)】：TP334.3

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 魏瑾;郁云;;觸摸屏數(shù)據(jù)采樣和濾波算法實(shí)現(xiàn)[J];電腦知識(shí)與技術(shù);2008年34期

2 張華;吳欣;王大星;;基于ARM7的SD卡讀寫控制在數(shù)據(jù)采集系統(tǒng)中的應(yīng)用[J];電子技術(shù)應(yīng)用;2009年07期

3 何偉;余征華;張玲;劉平凈;;基于SoPC的SD卡控制器IP核的設(shè)計(jì)[J];電子技術(shù)應(yīng)用;2011年03期

4 王春鋒;;電阻觸摸屏線性不良分析及處理[J];電子質(zhì)量;2011年09期

5 應(yīng)朝龍;王誠(chéng)成;周亮;王巖;;觸摸屏控制器設(shè)計(jì)[J];國(guó)外電子測(cè)量技術(shù);2009年09期

6 周躍;沈捷;花魁;;基于SD卡的數(shù)據(jù)存儲(chǔ)系統(tǒng)設(shè)計(jì)[J];化工自動(dòng)化及儀表;2012年01期

7 呂明;呂延;;觸摸屏的技術(shù)現(xiàn)狀、發(fā)展趨勢(shì)及市場(chǎng)前景[J];機(jī)床電器;2012年03期

8 靳寶安,牟強(qiáng),馬穎;薄膜晶體管及其在有源矩陣液晶顯示中的應(yīng)用[J];微電子學(xué);2004年05期

9 李雪偉;張立勛;唐小景;;STM32驅(qū)動(dòng)ILI9325顯示字符串的方法[J];煤礦機(jī)械;2011年10期

10 張子敬;;觸摸屏技術(shù)應(yīng)用現(xiàn)狀和未來(lái)發(fā)展趨勢(shì)[J];科技視界;2012年12期

本文編號(hào)：2398179