{"id":271,"date":"2014-04-09T21:57:50","date_gmt":"2014-04-09T13:57:50","guid":{"rendered":"http:\/\/blog.stlover.org\/?p=271"},"modified":"2014-04-09T22:00:26","modified_gmt":"2014-04-09T14:00:26","slug":"gps-with-python","status":"publish","type":"post","link":"http:\/\/blog.xuhao1.me\/?p=271","title":{"rendered":"GPS with python"},"content":{"rendered":"

GPS\u662f\u4e00\u4e2a\u4e0d\u96be\u6298\u817e\u7684\u73a9\u610f\uff0c\u4e0b\u9762\u6d69\u6d69\u5199\u4e86\u4e2apython\u8bfb\u53d6GPS\u7684demo\u7ed9\u5927\u5bb6<\/p>\n

<\/p>\n

    \n
      \n
    1. <\/li>\n
    2. class<\/span>\u00a0gps<\/span>:<\/span><\/li>\n
    3. \u00a0\u00a0\u00a0\u00a0<\/span>def<\/span>\u00a0__init__<\/span>(<\/span>self<\/span>):<\/span><\/li>\n
    4. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>import<\/span>\u00a0subprocess\u00a0<\/span>as<\/span>\u00a0sp<\/span><\/li>\n
    5. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>#self.ps1=sp.Popen(“cat\u00a0\/dev\/ttyUSB0″,shell=”true”,stdout=sp.PIPE)<\/span><\/li>\n
    6. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0self<\/span>.<\/span>ps1<\/span>=<\/span>sp<\/span>.<\/span>Popen<\/span>(<\/span>“cat\u00a0\/Users\/xuhao\/tmp\/b.txt”<\/span>,<\/span>shell<\/span>=<\/span>“true”<\/span>,<\/span>stdout<\/span>=<\/span>sp<\/span>.<\/span>PIPE<\/span>)<\/span><\/li>\n
    7. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0self<\/span>.<\/span>gps1<\/span>=<\/span>self<\/span>.<\/span>ps1<\/span>.<\/span>stdout<\/span><\/li>\n
    8. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>#self.ps2=sp.Popen(“cat\u00a0\/dev\/ttyUSB1″,shell=”true”,stdout=sp.PIPE)<\/span><\/li>\n
    9. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0self<\/span>.<\/span>ps2<\/span>=<\/span>sp<\/span>.<\/span>Popen<\/span>(<\/span>“cat\u00a0\/Users\/xuhao\/tmp\/b.txt”<\/span>,<\/span>shell<\/span>=<\/span>“true”<\/span>,<\/span>stdout<\/span>=<\/span>sp<\/span>.<\/span>PIPE<\/span>)<\/span><\/li>\n
    10. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0self<\/span>.<\/span>gps2<\/span>=<\/span>self<\/span>.<\/span>ps2<\/span>.<\/span>stdout<\/span><\/li>\n
    11. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0self<\/span>.<\/span>gpspair1<\/span>=<\/span>dict<\/span>()<\/span><\/li>\n
    12. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0self<\/span>.<\/span>gpspair2<\/span>=<\/span>dict<\/span>()<\/span><\/li>\n
    13. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0self<\/span>.<\/span>cha<\/span>=<\/span>dict<\/span>()<\/span><\/li>\n
    14. \u00a0\u00a0\u00a0\u00a0<\/span>def<\/span>\u00a0procline<\/span>(<\/span>self<\/span>,<\/span>line<\/span>):<\/span><\/li>\n
    15. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>if<\/span>(<\/span>line<\/span>[<\/span>1<\/span>:<\/span>6<\/span>]!=<\/span>“GPGGA”<\/span>):<\/span><\/li>\n
    16. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>return<\/span>\u00a0<\/span>0<\/span><\/li>\n
    17. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0lis<\/span>=<\/span>line<\/span>.<\/span>split<\/span>(<\/span>“,”<\/span>)<\/span><\/li>\n
    18. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>if<\/span>\u00a0lis<\/span>[<\/span>6<\/span>]==<\/span>“0”<\/span>:<\/span><\/li>\n
    19. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>return<\/span>\u00a0<\/span>0<\/span><\/li>\n
    20. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>return<\/span>\u00a0lis<\/span>[<\/span>1<\/span>],<\/span>lis<\/span>[<\/span>2<\/span>],<\/span>lis<\/span>[<\/span>4<\/span>]<\/span><\/li>\n
    21. \u00a0\u00a0\u00a0\u00a0<\/span><\/li>\n
    22. \u00a0\u00a0\u00a0\u00a0<\/span>def<\/span>\u00a0run<\/span>(<\/span>self<\/span>):<\/span><\/li>\n
    23. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0line<\/span>=<\/span>self<\/span>.<\/span>gps1<\/span>.<\/span>readline<\/span>()<\/span><\/li>\n
    24. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>try<\/span>:<\/span><\/li>\n
    25. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0t<\/span>,<\/span>x<\/span>,<\/span>y<\/span>=<\/span>self<\/span>.<\/span>procline<\/span>(<\/span>line<\/span>)<\/span><\/li>\n
    26. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0self<\/span>.<\/span>gpspair1<\/span>[<\/span>t<\/span>]=[<\/span>x<\/span>,<\/span>y<\/span>]<\/span><\/li>\n
    27. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>if<\/span>\u00a0t\u00a0<\/span>in<\/span>\u00a0self<\/span>.<\/span>gpspair2<\/span>:<\/span><\/li>\n
    28. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0self<\/span>.<\/span>cha<\/span>[<\/span>t<\/span>]=[<\/span>\u00a0x<\/span>–<\/span>self<\/span>.<\/span>gpspair2<\/span>[<\/span>t<\/span>][<\/span>0<\/span>],<\/span>y<\/span>–<\/span>self<\/span>.<\/span>gpspair2<\/span>[<\/span>t<\/span>][<\/span>1<\/span>]<\/span>\u00a0<\/span>]<\/span><\/li>\n
    29. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>except<\/span>:<\/span><\/li>\n
    30. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>pass<\/span><\/li>\n
    31. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0line<\/span>=<\/span>self<\/span>.<\/span>gps2<\/span>.<\/span>readline<\/span>()<\/span><\/li>\n
    32. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>try<\/span>:<\/span><\/li>\n
    33. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0t<\/span>,<\/span>x<\/span>,<\/span>y<\/span>=<\/span>self<\/span>.<\/span>procline<\/span>(<\/span>line<\/span>)<\/span><\/li>\n
    34. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0self<\/span>.<\/span>gpspair2<\/span>[<\/span>t<\/span>]=[<\/span>x<\/span>,<\/span>y<\/span>]<\/span><\/li>\n
    35. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>if<\/span>\u00a0t\u00a0<\/span>in<\/span>\u00a0self<\/span>.<\/span>gpspair1<\/span>:<\/span><\/li>\n
    36. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0self<\/span>.<\/span>cha<\/span>[<\/span>t<\/span>]=[<\/span>\u00a0float<\/span>(<\/span>self<\/span>.<\/span>gpspair1<\/span>[<\/span>t<\/span>][<\/span>0<\/span>])-<\/span>float<\/span>(<\/span>x<\/span>),<\/span>float<\/span>(<\/span>self<\/span>.<\/span>gpspair1<\/span>[<\/span>t<\/span>][<\/span>1<\/span>])-<\/span>float<\/span>(<\/span>y<\/span>)<\/span>\u00a0<\/span>]<\/span><\/li>\n
    37. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>except<\/span>:<\/span><\/li>\n
    38. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>pass<\/span><\/li>\n
    39. test<\/span>=<\/span>gps<\/span>()<\/span><\/li>\n
    40. for<\/span>\u00a0i\u00a0<\/span>in<\/span>\u00a0range<\/span>(<\/span>10000<\/span>):<\/span><\/li>\n
    41. \u00a0\u00a0\u00a0\u00a0test<\/span>.<\/span>run<\/span>()<\/span><\/li>\n
    42. print<\/span>\u00a0test<\/span>.<\/span>cha<\/span><\/li>\n<\/ol>\n<\/ol>\n

      \u5f88\u7b80\u5355\u7684\u4ee3\u7801\uff0c\u5728linux\/unix\u4e0a\u8bfb\u53d6GPS\u6570\u636e\uff0cGPS\u6570\u636e\u662f$GPSGGA…;\u53ea\u9700\u8981\u7b80\u5355\u5bf9\u4e32\u53e3\u89e3\u6790\u5373\u53ef\u3002<\/p>\n

      \u8fd9\u91cc\u540c\u65f6\u8fd8\u8fdb\u884c\u4e86\u53ccGPS\u5dee\u5206\u8ba1\u7b97\u3002\u4ee3\u7801\u548c\u6ce8\u91ca\u6389\u4ee3\u7801\u7684\u5207\u6362\u662f\u5728\u672c\u673a\u6d4b\u8bd5\uff08\u6211\u7684macbook\u63d2\u7740\u4e32\u53e3\u4f1a\u6b7b\u673a\uff09<\/p>\n","protected":false},"excerpt":{"rendered":"

      GPS\u662f\u4e00\u4e2a\u4e0d\u96be\u6298\u817e\u7684\u73a9\u610f\uff0c\u4e0b\u9762\u6d69\u6d69\u5199\u4e86\u4e2apython\u8bfb\u53d6GPS\u7684demo\u7ed9\u5927\u5bb6<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[],"_links":{"self":[{"href":"http:\/\/blog.xuhao1.me\/index.php?rest_route=\/wp\/v2\/posts\/271"}],"collection":[{"href":"http:\/\/blog.xuhao1.me\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/blog.xuhao1.me\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/blog.xuhao1.me\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/blog.xuhao1.me\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=271"}],"version-history":[{"count":2,"href":"http:\/\/blog.xuhao1.me\/index.php?rest_route=\/wp\/v2\/posts\/271\/revisions"}],"predecessor-version":[{"id":273,"href":"http:\/\/blog.xuhao1.me\/index.php?rest_route=\/wp\/v2\/posts\/271\/revisions\/273"}],"wp:attachment":[{"href":"http:\/\/blog.xuhao1.me\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=271"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/blog.xuhao1.me\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=271"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/blog.xuhao1.me\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=271"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}