分析了TFT-LCD 與PXA270 內(nèi)嵌的LCD 控制器的基本原理與時(shí)序，根據(jù)它們的特點(diǎn)與時(shí)序要求，設(shè)計(jì)了TFT-LCD的硬件驅(qū)動(dòng)接口電路，基于Linux-2.4.19 內(nèi)核設(shè)計(jì)了相應(yīng)的驅(qū)動(dòng)程序，軟硬件在目標(biāo)板上工作良好。該設(shè)計(jì)對(duì)于驅(qū)動(dòng)TFT-LCD具有通用性，由于Linux 驅(qū)動(dòng)程序移植性強(qiáng)，因而該設(shè)計(jì)可適用于工業(yè)控制領(lǐng)域多種嵌入式系統(tǒng)。
關(guān)鍵詞： Linux；嵌入式系統(tǒng)；TFT-LCD；顯示驅(qū)動(dòng)；PXA270
Abstract: The basic principle and timing sequence of TFT-LCD and embedded LCD-controller of PXA270 are analyzed. According to their characteristics and the request of timing sequence, the hardware drive interface circuit of TFT-LCD is designed. The relevant drive software is also designed based on Linux-2.4.19 kernel. As the result, the hardware and software work well on the target board. The design can be used in most of the embedded device for driving TFT-LCD. Because the Linux display drive software can be well
transplanted, so the design can be used in many sorts of embedded system in the industry control areas.
Key words: Linux; embedded system; TFT-LCD; display driving; PXA270