目录0摘要………………………………………………………………………………………………………1TOC\p""\h\z\t"样式47,1,样式48,2,样式49,3"HYPERLINK\l"_Toc217034711"1引言…………………………………………………………………………………………………………2HYPERLINK\l"_Toc217034712"1系统方案选择与论证………………………………………………………………………………………PAGEREF_Toc217034712\h2HYPERLINK\l"_Toc217034713"1.1总体设计方案……………………………………………………………………………………3HYPERLINK\l"_Toc217034714"1.2部分模块设计方案…………………………………………………………………………………PAGEREF_Toc217034714\h3HYPERLINK\l"_Toc217034715"1.2.1主控芯片选择方案………………………………………………………………………PAGEREF_Toc217034715\h3HYPERLINK\l"_Toc217034715"1.2.2操作系统及选择方案……………………………………………………………………PAGEREF_Toc217034715\h3HYPERLINK\l"_Toc217034716"1.2.3GPS模块设计方案…………………………………………………………………………PAGEREF_Toc217034716\h3HYPERLINK\l"_Toc217034718"1.2.4显示模块设计方案………………………………………………………………………3HYPERLINK\l"_Toc217034718"1.2.5地图文件存放方案……………………………………………………………………PAGEREF_Toc217034718\h4HYPERLINK\l"_Toc217034720"1.3总体方案确定………………………………………………………………………………………42系统硬件设计2.1主控芯片电路………………………………………………………………………………………52.2flash芯片电路……………………………………………………………………………………72.3串口电路…………………………………………………………………………………………82.4usb接口电路……………………………………………………………………………………92.6系统总线及lcd接口电路…………………………………………………………………………92.5电源电路…………………………………………………………………………………………10HYPERLINK\l"_Toc217034726"3系统的软件设计…………………………………………………………………………………………PAGEREF_Toc217034726\h11HYPERLINK\l"_Toc217034727"3.1程序结构框图……………………………………………………………………………………PAGEREF_Toc217034727\h11HYPERLINK\l"_Toc217034728"3.2Maintab类………………………………………………………………………………………PAGEREF_Toc217034728\h11HYPERLINK\l"_Toc217034729"3.3Mainwidget类…………………………………………………………………………………PAGEREF_Toc217034729\h11HYPERLINK\l"_Toc217034730"3.4config类………………………………………………………………………………………PAGEREF_Toc217034730\h12HYPERLINK\l"_Toc217034731"3.5map类……………………………………………………………………………………………PAGEREF_Toc217034731\h13HYPERLINK\l"_Toc217034732"3.6gps_diver类…………………………………………………………………………………PAGEREF_Toc217034732\h14HYPERLINK\l"_Toc217034735"3.7staSNR类……………………………………………………