{"id":632,"date":"2018-03-15T15:03:18","date_gmt":"2018-03-15T07:03:18","guid":{"rendered":"http:\/\/www.max-shu.com\/blog\/?p=632"},"modified":"2018-03-15T15:05:18","modified_gmt":"2018-03-15T07:05:18","slug":"%e8%bd%a6%e6%9c%ba%e6%8a%80%e6%9c%af%e4%b9%8bandroid-automotive","status":"publish","type":"post","link":"http:\/\/www.max-shu.com\/blog\/?p=632","title":{"rendered":"\u8f66\u673a\u6280\u672f\u4e4bAndroid Automotive"},"content":{"rendered":"<p>\u501f\u52a9\u5404\u79cd\u603b\u7ebf\u62d3\u6251\uff0c\u5f88\u591a\u6c7d\u8f66\u5b50\u7cfb\u7edf\u90fd\u53ef\u4ee5\u5b9e\u73b0\u4e92\u8fde\u4ee5\u53ca\u4e0e\u8f66\u8f7d\u4fe1\u606f\u5a31\u4e50 (IVI) \u7cfb\u7edf\u7684\u8fde\u63a5\u3002\u6839\u636e\u5236\u9020\u5546\u4e0d\u540c\uff0c\u6240\u63d0\u4f9b\u7684\u786e\u5207\u603b\u7ebf\u7c7b\u578b\u548c\u534f\u8bae\u4e5f\u6709\u5f88\u5927\u5dee\u5f02\uff08\u751a\u81f3\u540c\u4e00\u54c1\u724c\u7684\u4e0d\u540c\u8f66\u578b\u4e4b\u95f4\u4e5f\u662f\u5982\u6b64\uff09\uff1b\u793a\u4f8b\u5305\u62ec\u63a7\u5236\u5668\u533a\u57df\u7f51\u7edc (CAN) \u603b\u7ebf\u3001\u672c\u5730\u4e92\u8054\u7f51\u7edc (LIN) \u603b\u7ebf\u3001\u5a92\u4f53\u5bfc\u5411\u7cfb\u7edf\u4f20\u8f93 (MOST) \u603b\u7ebf\u4ee5\u53ca\u6c7d\u8f66\u7ea7\u4ee5\u592a\u7f51\u548c TCP\/IP \u7f51\u7edc\uff08\u4f8b\u5982 BroadR-Reach\uff09\u3002<\/p>\n<p>Android Automotive \u7684\u786c\u4ef6\u62bd\u8c61\u5c42 (HAL) \u4e3a Android \u6846\u67b6\u63d0\u4f9b\u4e86\u4e00\u81f4\u7684\u63a5\u53e3\uff08\u65e0\u9700\u8003\u8651\u7269\u7406\u4f20\u8f93\u5c42\uff09\u3002\u6b64\u8f66\u8f7d HAL \u662f\u7528\u4e8e\u5f00\u53d1 Android Automotive \u5b9e\u73b0\u7684\u63a5\u53e3\u3002<\/p>\n<p>\u7cfb\u7edf\u96c6\u6210\u4eba\u5458\u53ef\u4ee5\u5c06\u7279\u5b9a\u4e8e\u529f\u80fd\u7684\u5e73\u53f0 HAL \u63a5\u53e3\uff08\u5982 HVAC\uff09\u4e0e\u7279\u5b9a\u4e8e\u6280\u672f\u7684\u7f51\u7edc\u63a5\u53e3\uff08\u5982 CAN \u603b\u7ebf\uff09\u8fde\u63a5\uff0c\u4ee5\u5b9e\u73b0\u8f66\u8f7d HAL \u6a21\u5757\u3002\u5178\u578b\u7684\u5b9e\u73b0\u53ef\u80fd\u5305\u62ec\u8fd0\u884c\u4e13\u6709\u5b9e\u65f6\u64cd\u4f5c\u7cfb\u7edf (RTOS) \u7684\u4e13\u7528\u5fae\u63a7\u5236\u5668\u5355\u5143\uff08MCU\uff0c\u7528\u4e8e CAN \u603b\u7ebf\u8bbf\u95ee\u6216\u7c7b\u4f3c\u64cd\u4f5c\uff09\uff0c\u8be5\u5fae\u63a7\u5236\u5668\u5355\u5143\u53ef\u901a\u8fc7\u4e32\u884c\u94fe\u8def\u8fde\u63a5\u5230\u8fd0\u884c Android Automotive \u7684 CPU\u3002\u9664\u4e86\u4e13\u7528\u7684 MCU\uff0c\u60a8\u8fd8\u53ef\u4ee5\u5c06\u603b\u7ebf\u8bbf\u95ee\u4f5c\u4e3a\u865a\u62df CPU \u6765\u5b9e\u73b0\u3002\u53ea\u8981\u5b9e\u73b0\u7b26\u5408\u8f66\u8f7d HAL \u7684\u63a5\u53e3\u8981\u6c42\uff0c\u6bcf\u4e2a\u5408\u4f5c\u4f19\u4f34\u90fd\u53ef\u4ee5\u9009\u62e9\u9002\u5408\u786c\u4ef6\u7684\u67b6\u6784\u3002<\/p>\n<h2>\u67b6\u6784<\/h2>\n<p>\u8f66\u8f7d HAL \u662f\u6c7d\u8f66\u4e0e\u8f66\u8f86\u7f51\u7edc\u670d\u52a1\u4e4b\u95f4\u7684\u63a5\u53e3\u5b9a\u4e49\uff1a<\/p>\n<p><img \/><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-634\" src=\"http:\/\/www.max-shu.com\/blog\/wp-content\/uploads\/2018\/03\/6632629072211217257.jpg\" alt=\"\" width=\"604\" height=\"203\" \/><\/p>\n<p><strong>\u00a0 \u00a0 \u00a0 \u00a0 \u56fe 1<\/strong>. \u8f66\u8f7d HAL \u4e0e Android Automotive \u67b6\u6784<\/p>\n<ul>\n<li><strong>Car API<\/strong>\uff1a\u5305\u542b CarHvacManager\u3001CarSensorManager \u548c CarCameraManager \u7b49 API\u3002\u5982\u9700\u8be6\u7ec6\u4e86\u89e3\u53d7\u652f\u6301\u7684 API\uff0c\u8bf7\u53c2\u9605\u00a0\/platform\/packages\/services\/Car\/car-lib\u3002<\/li>\n<li><strong>CarService<\/strong>\uff1a\u4f4d\u4e8e\/platform\/packages\/services\/Car\/\u3002<\/li>\n<li><strong>VehicleNetworkService<\/strong>\uff1a\u901a\u8fc7\u5185\u7f6e\u5b89\u5168\u673a\u5236\u6765\u63a7\u5236\u8f66\u8f7d HAL\u3002\u4ec5\u9650\u7cfb\u7edf\u7ec4\u4ef6\u4f7f\u7528\uff08\u7b2c\u4e09\u65b9\u5e94\u7528\u7b49\u975e\u7cfb\u7edf\u7ec4\u4ef6\u5e94\u4f7f\u7528\u6c7d\u8f66 API\uff09\u3002\u539f\u59cb\u8bbe\u5907\u5236\u9020\u5546 (OEM) \u53ef\u4ee5\u901a\u8fc7\u00a0vns_policy.xml\u00a0\u548cvendor_vns_policy.xml\u00a0\u63a7\u5236\u8bbf\u95ee\u6743\u9650\u3002\u4f4d\u4e8e\u00a0\/platform\/packages\/services\/Car\/vehicle_network_service\/\uff1b\u8981\u67e5\u770b\u7528\u4e8e\u8bbf\u95ee\u8f66\u8f86\u7f51\u7edc\u7684\u5e93\uff0c\u8bf7\u53c2\u9605\/platform\/packages\/services\/Car\/libvehiclenetwork\/\u3002<\/li>\n<li><strong>\u8f66\u8f7d HAL<\/strong>\uff1a\u5b9a\u4e49 OEM \u53ef\u4ee5\u5b9e\u73b0\u7684\u8f66\u8f86\u5c5e\u6027\u7684\u63a5\u53e3\u3002\u5305\u542b\u5c5e\u6027\u5143\u6570\u636e\uff08\u4f8b\u5982\uff0c\u8f66\u8f86\u5c5e\u6027\u662f\u5426\u4e3a int \u4ee5\u53ca\u5141\u8bb8\u4f7f\u7528\u54ea\u4e9b\u66f4\u6539\u6a21\u5f0f\uff09\u3002\u4f4d\u4e8ehardware\/libhardware\/include\/hardware\/vehicle.h\u3002\u8981\u4e86\u89e3\u57fa\u672c\u53c2\u8003\u5b9e\u73b0\u7684\u76f8\u5173\u4fe1\u606f\uff0c\u8bf7\u53c2\u9605hardware\/libhardware\/modules\/vehicle\/\u3002<\/li>\n<\/ul>\n<p>\u6709\u5173\u66f4\u591a\u8be6\u60c5\u53c2\u8003\u4e0b\u9762\u7684\u201c\u8f66\u8f86\u5c5e\u6027\u201d\u7ae0\u8282\u3002<\/p>\n<p>\u5b89\u5168\u6027<\/p>\n<p>\u8f66\u8f7d HAL \u652f\u6301 3 \u4e2a\u7ea7\u522b\u7684\u6570\u636e\u8bbf\u95ee\u5b89\u5168\u6027\uff1a<\/p>\n<ul>\n<li>\u4ec5\u9650\u7cfb\u7edf\uff08\u7531\u00a0vns_policy.xml\u00a0\u63a7\u5236\uff09<\/li>\n<li>\u5141\u8bb8\u62e5\u6709\u6743\u9650\u7684\u5e94\u7528\u8fdb\u884c\u8bbf\u95ee\uff08\u901a\u8fc7\u6c7d\u8f66\u670d\u52a1\uff09<\/li>\n<li>\u65e0\u9700\u4efb\u4f55\u6743\u9650\u5373\u53ef\u8bbf\u95ee\uff08\u901a\u8fc7\u6c7d\u8f66\u670d\u52a1\uff09<\/li>\n<\/ul>\n<p>\u4ec5\u5141\u8bb8\u90e8\u5206\u7cfb\u7edf\u7ec4\u4ef6\u76f4\u63a5\u8bbf\u95ee\u8f66\u8f86\u5c5e\u6027\uff0c\u800c\u8f66\u8f86\u7f51\u7edc\u670d\u52a1\u662f\u628a\u5173\u7a0b\u5e8f\u3002\u5927\u591a\u6570\u5e94\u7528\u90fd\u9700\u8981\u901a\u8fc7\u6c7d\u8f66\u670d\u52a1\u7684\u989d\u5916\u628a\u5173\uff08\u4f8b\u5982\uff0c\u53ea\u6709\u7cfb\u7edf\u5e94\u7528\u53ef\u4ee5\u63a7\u5236 HVAC\uff0c\u56e0\u4e3a\u7cfb\u7edf\u6743\u9650\u53ea\u80fd\u6388\u4e88\u7cfb\u7edf\u5e94\u7528\uff09\u3002<\/p>\n<h2>\u9a8c\u8bc1<\/h2>\n<p>AOSP \u5305\u542b\u5f00\u53d1\u8fc7\u7a0b\u4e2d\u4f7f\u7528\u7684\u4ee5\u4e0b\u6d4b\u8bd5\u8d44\u6e90\uff1a<\/p>\n<ul>\n<li>hardware\/libhardware\/tests\/vehicle\/vehicle-hal-tool.c<br \/>\n\u52a0\u8f7d\u8f66\u8f7d HAL \u5e76\u6267\u884c\u7b80\u5355\u64cd\u4f5c\u7684\u547d\u4ee4\u884c\u539f\u751f\u5de5\u5177\u3002\u5b83\u6709\u52a9\u4e8e\u7cfb\u7edf\u5728\u5f00\u53d1\u7684\u65e9\u671f\u9636\u6bb5\u542f\u52a8\u5e76\u8fd0\u884c\u3002<\/li>\n<li>packages\/services\/Car\/tests\/carservice_test\/<br \/>\n\u5305\u542b\u4f7f\u7528\u6a21\u62df\u8f66\u8f7d HAL \u5c5e\u6027\u8fdb\u884c\u7684\u6c7d\u8f66\u670d\u52a1\u6d4b\u8bd5\u3002\u6bcf\u4e2a\u5c5e\u6027\u7684\u9884\u671f\u884c\u4e3a\u90fd\u4f1a\u5728\u6d4b\u8bd5\u4e2d\u5b9e\u73b0\uff0c\u8fd9\u662f\u4e86\u89e3\u9884\u671f\u884c\u4e3a\u7684\u7edd\u4f73\u8d77\u70b9\u3002<\/li>\n<li>hardware\/libhardware\/modules\/vehicle\/<br \/>\n\u57fa\u672c\u53c2\u8003\u5b9e\u73b0\u3002<\/li>\n<\/ul>\n<h1>\u8f66\u8f86\u5c5e\u6027<\/h1>\n<p>\u8f66\u8f7d HAL \u63a5\u53e3\u4f1a\u5b9a\u4e49\u539f\u59cb\u8bbe\u5907\u5236\u9020\u5546 (OEM) \u53ef\u4ee5\u5b9e\u73b0\u7684\u5c5e\u6027\uff0c\u5e76\u4f1a\u5305\u542b\u5c5e\u6027\u5143\u6570\u636e\uff08\u4f8b\u5982\uff0c\u5c5e\u6027\u662f\u5426\u4e3a int \u4ee5\u53ca\u5141\u8bb8\u4f7f\u7528\u54ea\u4e9b\u66f4\u6539\u6a21\u5f0f\uff09\u3002\u8f66\u8f7d HAL \u63a5\u53e3\u662f\u4ee5\u5bf9\u5c5e\u6027\uff08\u7279\u5b9a\u529f\u80fd\u7684\u62bd\u8c61\u8868\u793a\uff09\u7684\u8bbf\u95ee\uff08\u8bfb\u53d6\u3001\u5199\u5165\u3001\u8ba2\u9605\uff09\u4e3a\u57fa\u7840\u3002<\/p>\n<h2>HAL \u63a5\u53e3<\/h2>\n<p>\u8f66\u8f7d HAL \u4f7f\u7528\u4ee5\u4e0b\u63a5\u53e3\uff1a<\/p>\n<ul>\n<li>vehicle_prop_config_t const *(*list_properties)(&#8230;, int* num_properties)<br \/>\n\u5217\u51fa\u8f66\u8f7d HAL \u6240\u652f\u6301\u7684\u6240\u6709\u5c5e\u6027\u7684\u914d\u7f6e\u3002\u8f66\u8f86\u7f51\u7edc\u670d\u52a1\u53ea\u4f1a\u4f7f\u7528\u53d7\u652f\u6301\u7684\u5c5e\u6027\u3002<\/li>\n<li>(*get)(&#8230;, vehicle_prop_value_t *da<wbr \/>ta)<br \/>\n\u8bfb\u53d6\u5c5e\u6027\u7684\u5f53\u524d\u503c\u3002\u5bf9\u4e8e\u533a\u57df\u5c5e\u6027\uff0c\u6bcf\u4e2a\u533a\u57df\u90fd\u53ef\u80fd\u5177\u6709\u4e0d\u540c\u7684\u503c\u3002<\/li>\n<li>(*set)(&#8230;, const vehicle_prop_value_t *da<wbr \/>ta)<br \/>\n\u4e3a\u5c5e\u6027\u5199\u5165\u76f8\u5e94\u503c\u3002\u5199\u5165\u7684\u7ed3\u679c\u662f\u6309\u5c5e\u6027\u8fdb\u884c\u5b9a\u4e49\u3002<\/li>\n<li>(*subscribe)(&#8230;, int32_t prop, float sample_rate, int32_t zones)\n<ul>\n<li>\u5f00\u59cb\u76d1\u89c6\u5c5e\u6027\u503c\u7684\u53d8\u5316\u3002\u5bf9\u4e8e\u533a\u57df\u5c5e\u6027\uff0c\u8ba2\u9605\u9002\u7528\u4e8e\u8bf7\u6c42\u7684\u533a\u57df\u3002\u201czones = 0\u201d\u7528\u4e8e\u8bf7\u6c42\u6240\u6709\u53d7\u652f\u6301\u7684\u533a\u57df\u3002<\/li>\n<li>\u8f66\u8f7d HAL \u5e94\u8be5\u5728\u5c5e\u6027\u503c\u53d1\u751f\u53d8\u5316\u65f6\uff08\u5373 on-change \u7c7b\u578b\uff09\u6216\u6309\u4e00\u5b9a\u95f4\u9694\uff08\u5373 continuous \u7c7b\u578b\uff09\u8c03\u7528\u5355\u72ec\u7684\u56de\u8c03\u3002<\/li>\n<\/ul>\n<\/li>\n<li>(*release_memory_from_get)(struct vehicle_hw_device* device, vehicle_prop_value_t *da<wbr \/>ta)<br \/>\n\u91ca\u653e\u4ece get \u8c03\u7528\u5206\u914d\u7684\u5185\u5b58\u3002<\/li>\n<\/ul>\n<p>\u8f66\u8f7d HAL \u4f7f\u7528\u4ee5\u4e0b\u56de\u8c03\u63a5\u53e3\uff1a<\/p>\n<ul>\n<li>(*vehicle_event_callback_fn)(const vehicle_prop_value_t *event_da<wbr \/>ta)<br \/>\n\u901a\u77e5\u8f66\u8f86\u5c5e\u6027\u503c\u7684\u53d8\u5316\u3002\u5e94\u53ea\u9488\u5bf9\u5df2\u8ba2\u9605\u5c5e\u6027\u6267\u884c\u3002<\/li>\n<li>(*vehicle_error_callback_fn)(int32_t error_co<wbr \/>de, int32_t property, int32_t operation)<br \/>\n\u8fd4\u56de\u5168\u5c40\u8f66\u8f7d HAL \u7ea7\u9519\u8bef\u6216\u6bcf\u4e2a\u5c5e\u6027\u7684\u9519\u8bef\u3002\u5168\u5c40\u9519\u8bef\u4f1a\u5bfc\u81f4 HAL \u91cd\u65b0\u542f\u52a8\uff0c\u8fd9\u53ef\u80fd\u5bfc\u81f4\u5305\u62ec\u5e94\u7528\u5728\u5185\u7684\u5176\u4ed6\u7ec4\u4ef6\u91cd\u65b0\u542f\u52a8\u3002<\/li>\n<\/ul>\n<h2>\u8f66\u8f86\u5c5e\u6027<\/h2>\n<p>\u5c5e\u6027\u53ef\u4ee5\u662f\u53ea\u8bfb\u3001\u53ea\u5199\uff08\u7528\u4e8e\u5c06\u4fe1\u606f\u4f20\u9012\u5230\u8f66\u8f7d HAL \u4e00\u7ea7\uff09\uff0c\u4e5f\u53ef\u4ee5\u662f\u80fd\u591f\u8bfb\u53d6\u548c\u5199\u5165\uff08\u5bf9\u5927\u591a\u6570\u5c5e\u6027\u800c\u8a00\u652f\u6301\u8bfb\u5199\u662f\u53ef\u9009\u7684\uff09\u3002\u6bcf\u4e2a\u5c5e\u6027\u90fd\u7531 int32 \u952e\u552f\u4e00\u6807\u8bc6\uff0c\u4e14\u5177\u6709\u9884\u5b9a\u4e49\u7684\u7c7b\u578b (value_type)\uff1a<\/p>\n<ul>\n<li>INT32\uff08\u548c\u6570\u7ec4\uff09\u3001INT64\u3001BOOLEAN\u3001FLOAT\uff08\u548c\u6570\u7ec4\uff09\u3001\u5b57\u7b26\u4e32\u3001\u5b57\u8282\u3002<\/li>\n<li>\u533a\u57df\u7c7b\u578b\u9664\u4e86\u503c\u4e4b\u5916\u8fd8\u6709\u533a\u57df\u3002<\/li>\n<\/ul>\n<h2>\u533a\u57df\u7c7b\u578b<\/h2>\n<p>\u8f66\u8f7d HAL \u5b9a\u4e49\u4e86 3 \u79cd\u533a\u57df\u7c7b\u578b\uff1a<\/p>\n<ul>\n<li>vehicle_zone<br \/>\n\u57fa\u4e8e\u6392\u7684\u533a\u57df\u3002<\/li>\n<li>vehicle_seat<br \/>\n\u57fa\u4e8e\u5ea7\u4f4d\u7684\u533a\u57df\u3002<\/li>\n<li>vehicle_window<br \/>\n\u57fa\u4e8e\u7a97\u6237\u7684\u533a\u57df\u3002<\/li>\n<\/ul>\n<p>\u6bcf\u4e2a\u533a\u57df\u5c5e\u6027\u90fd\u5e94\u4f7f\u7528\u9884\u5b9a\u4e49\u7684\u533a\u57df\u7c7b\u578b\u3002\u5982\u6709\u5fc5\u8981\uff0c\u60a8\u53ef\u4ee5\u4e3a\u6bcf\u4e2a\u5c5e\u6027\u90fd\u4f7f\u7528\u81ea\u5b9a\u4e49\u533a\u57df\u7c7b\u578b\uff08\u6709\u5173\u8be6\u60c5\uff0c\u8bf7\u53c2\u9605\u201c\u5904\u7406\u81ea\u5b9a\u4e49\u5c5e\u6027\u201d\u4e00\u8282\uff09\u3002<\/p>\n<h2>\u914d\u7f6e\u5c5e\u6027<\/h2>\n<p>\u8bf7\u4f7f\u7528\u00a0vehicle_prop_config_t\u00a0\u4e3a\u6bcf\u4e2a\u5c5e\u6027\u63d0\u4f9b\u914d\u7f6e\u4fe1\u606f\u3002\u5177\u4f53\u4fe1\u606f\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>access\uff08r\u3001w\u3001rw\uff09<\/li>\n<li>change_mode\uff08\u8868\u793a\u76d1\u89c6\u5c5e\u6027\u7684\u65b9\u5f0f\uff1aon-change \u6a21\u5f0f\u8fd8\u662f continuous \u6a21\u5f0f\uff09<\/li>\n<li>min_value\uff08int32\u3001float\u3001int64\uff09\u3001max_value\uff08int32\u3001float\u3001int64\uff09<\/li>\n<li>min_sample_rate\u3001max_sample_rate<\/li>\n<li>permission_model<\/li>\n<li>prop\uff08\u5c5e\u6027 ID\u3001int\uff09<\/li>\n<li>value_type<\/li>\n<li>zone_flags\uff08\u5c06\u53d7\u652f\u6301\u7684\u533a\u57df\u8868\u793a\u4e3a\u4f4d\u6807\u8bb0\uff09<\/li>\n<\/ul>\n<p>\u6b64\u5916\uff0c\u67d0\u4e9b\u5c5e\u6027\u5177\u6709\u8868\u793a\u529f\u80fd\u7684\u5177\u4f53\u914d\u7f6e\u6807\u8bb0\u3002<\/p>\n<h2>\u5904\u7406\u533a\u57df\u5c5e\u6027<\/h2>\n<p>\u533a\u57df\u5c5e\u6027\u76f8\u5f53\u4e8e\u591a\u4e2a\u5c5e\u6027\u7684\u96c6\u5408\uff0c\u5176\u4e2d\u6bcf\u4e2a\u5b50\u5c5e\u6027\u90fd\u53ef\u7531\u6307\u5b9a\u7684\u533a\u57df\u503c\u8bbf\u95ee\u3002<\/p>\n<ul>\n<li>\u533a\u57df\u5c5e\u6027\u7684\u00a0get\u00a0\u8c03\u7528\u8bf7\u6c42\u4e2d\u59cb\u7ec8\u5305\u542b\u533a\u57df\uff0c\u56e0\u6b64\uff0c\u53ea\u5e94\u8fd4\u56de\u6240\u8bf7\u6c42\u533a\u57df\u7684\u5f53\u524d\u503c\u3002<\/li>\n<li>\u533a\u57df\u5c5e\u6027\u7684\u00a0set\u00a0\u8c03\u7528\u8bf7\u6c42\u4e2d\u59cb\u7ec8\u5305\u542b\u533a\u57df\uff0c\u56e0\u6b64\uff0c\u53ea\u5e94\u66f4\u6539\u6240\u8bf7\u6c42\u7684\u533a\u57df\u3002<\/li>\n<li>subscribe\u00a0\u8c03\u7528\u5305\u542b\u6240\u6709\u5df2\u8ba2\u9605\u533a\u57df\u7684\u6807\u8bb0\u3002\u4e0d\u5e94\u62a5\u544a\u6765\u81ea\u672a\u8ba2\u9605\u533a\u57df\u7684\u4e8b\u4ef6\u3002<\/li>\n<\/ul>\n<h3>get \u8c03\u7528<\/h3>\n<p>\u5728\u521d\u59cb\u5316\u671f\u95f4\uff0c\u7531\u4e8e\u5c1a\u672a\u6536\u5230\u5339\u914d\u7684\u8f66\u8f86\u7f51\u7edc\u6d88\u606f\uff0c\u56e0\u6b64\u5c5e\u6027\u7684\u503c\u53ef\u80fd\u4e0d\u53ef\u7528\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0cget\u00a0\u8c03\u7528\u5e94\u8be5\u8fd4\u56de\u00a0-EAGAIN\u3002\u67d0\u4e9b\u5c5e\u6027\uff08\u5982 HVAC\uff09\u5177\u6709\u5355\u72ec\u7684\u7535\u6e90\u5f00\/\u5173\u5c5e\u6027\u3002\u5173\u673a\u65f6\u8fd9\u79cd\u5c5e\u6027\u7684\u00a0get\u00a0\u8c03\u7528\u5e94\u8fd4\u56de\u7279\u6b8a\u503c\u00a0(VEHICLE_INT_OUT_OF_RANGE_OFF \/ VEHICLE_FLOAT_OUT_OF_RANGE_OFF)\uff0c\u800c\u4e0d\u662f\u8fd4\u56de\u9519\u8bef\u3002<\/p>\n<p>\u6b64\u5916\uff0c\u67d0\u4e9b\u5c5e\u6027\uff08\u5982 HVAC \u6e29\u5ea6\uff09\u53ef\u4ee5\u7528\u67d0\u4e2a\u503c\u6765\u8868\u793a\u5176\u5904\u4e8e\u6700\u5927\u529f\u7387\u6a21\u5f0f\uff0c\u800c\u4e0d\u662f\u7279\u5b9a\u7684\u6e29\u5ea6\u503c\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u8bf7\u4f7f\u7528\u7279\u6b8a\u503c\u8868\u793a\u8fd9\u79cd\u72b6\u6001\u3002<\/p>\n<ul>\n<li>VEHICLE_INT_OUT_OF_RANGE_MAX\/MIN<\/li>\n<li>VEHICLE_FLOAT_OUT_OF_RANGE_MAX\/MIN<\/li>\n<\/ul>\n<p>\u793a\u4f8b\uff1a\u83b7\u53d6 HVAC \u6e29\u5ea6<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-636\" src=\"http:\/\/www.max-shu.com\/blog\/wp-content\/uploads\/2018\/03\/6632398174771978533.jpg\" alt=\"\" width=\"640\" height=\"479\" \/><br \/>\n<strong>\u00a0 \u00a0 \u00a0 \u00a0 \u56fe 2<\/strong>. \u83b7\u53d6 HVAC \u6e29\u5ea6\uff08CS = CarService\u3001VNS = VehicleNetworkService\u3001VHAL = \u8f66\u8f7d HAL\uff09<\/p>\n<h3>set \u8c03\u7528<\/h3>\n<p>set\u00a0\u8c03\u7528\u5c5e\u4e8e\u5f02\u6b65\u64cd\u4f5c\uff0c\u6d89\u53ca\u8fdb\u884c\u6240\u8bf7\u6c42\u66f4\u6539\u4e4b\u540e\u7684\u4e8b\u4ef6\u901a\u77e5\u3002\u5728\u5178\u578b\u7684\u64cd\u4f5c\u4e2d\uff0cset\u00a0\u8c03\u7528\u4f1a\u5bfc\u81f4\u5728\u8f66\u8f86\u7f51\u7edc\u4e2d\u53d1\u51fa\u66f4\u6539\u8bf7\u6c42\u3002\u62e5\u6709\u8be5\u5c5e\u6027\u7684\u7535\u5b50\u63a7\u5236\u5355\u5143 (ECU) \u6267\u884c\u66f4\u6539\u540e\uff0c\u66f4\u65b0\u540e\u7684\u503c\u4f1a\u901a\u8fc7\u8f66\u8f86\u7f51\u7edc\u8fd4\u56de\uff0c\u800c\u8f66\u8f7d HAL \u4f1a\u5c06\u66f4\u65b0\u540e\u7684\u503c\u4f5c\u4e3a\u4e8b\u4ef6\u53d1\u9001\u7ed9\u8f66\u8f86\u7f51\u7edc\u670d\u52a1 (VNS)\u3002<\/p>\n<p>\u67d0\u4e9b\u00a0set\u00a0\u8c03\u7528\u53ef\u80fd\u8981\u6c42\u51c6\u5907\u597d\u521d\u59cb\u6570\u636e\uff0c\u800c\u8fd9\u4e9b\u6570\u636e\u5728\u521d\u59cb\u5316\u671f\u95f4\u53ef\u80fd\u5c1a\u672a\u63d0\u4f9b\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0cset\u00a0\u8c03\u7528\u5e94\u8be5\u8fd4\u56de\u00a0-EAGAIN\u3002\u67d0\u4e9b\u5177\u6709\u5355\u72ec\u7684\u7535\u6e90\u5f00\/\u5173\u7684\u5c5e\u6027\u5e94\u5728\u7535\u6e90\u5173\u95ed\u4e14\u65e0\u6cd5\u8bbe\u7f6e\u65f6\u8fd4\u56de\u00a0-ESHUTDOWN\u3002<\/p>\n<p>\u5728\u00a0set\u00a0\u751f\u6548\u4e4b\u524d\uff0cget\u00a0\u4e0d\u4e00\u5b9a\u4f1a\u8fd4\u56de\u6240\u8bbe\u7f6e\u7684\u503c\u3002\u4e0d\u8fc7\uff0c\u4f8b\u5916\u7684\u662f\u66f4\u6539\u6a21\u5f0f\u4e3a\u00a0VEHICLE_PROP_CHANGE_MODE_ON_SET\u7684\u5c5e\u6027\u3002\u6b64\u7c7b\u5c5e\u6027\u4ec5\u5728\u88ab Android \u4e4b\u5916\u7684\u5916\u90e8\u7ec4\u4ef6\uff08\u5982\u00a0VEHICLE_PROPERTY_UNIX_TIME\u00a0\u7b49\u65f6\u949f\u5c5e\u6027\uff09\u8bbe\u7f6e\u65f6\u624d\u4f1a\u901a\u77e5\u66f4\u6539\u3002<\/p>\n<p>\u793a\u4f8b\uff1a\u8bbe\u7f6e HVAC \u6e29\u5ea6\uff1a<\/p>\n<p><img \/><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-637\" src=\"http:\/\/www.max-shu.com\/blog\/wp-content\/uploads\/2018\/03\/6632653261467026552.jpg\" alt=\"\" width=\"640\" height=\"517\" \/><\/p>\n<p><strong>\u00a0 \u00a0 \u00a0 \u00a0 \u56fe 3<\/strong>. \u8bbe\u7f6e HVAC \u6e29\u5ea6\uff08CD = CarService\u3001VNS = VehicleNetworkService\u3001VHAL = \u8f66\u8f7d HAL\uff09<\/p>\n<h2>\u5904\u7406\u81ea\u5b9a\u4e49\u5c5e\u6027<\/h2>\n<p>\u4e3a\u4e86\u6ee1\u8db3\u5408\u4f5c\u4f19\u4f34\u7684\u7279\u5b9a\u9700\u6c42\uff0c\u8f66\u8f7d HAL \u5141\u8bb8\u4f7f\u7528\u4ec5\u9650\u4e8e\u7cfb\u7edf\u5e94\u7528\u7684\u81ea\u5b9a\u4e49\u5c5e\u6027\u3002\u5728\u4f7f\u7528\u81ea\u5b9a\u4e49\u5c5e\u6027\u65f6\uff0c\u8bf7\u9075\u5faa\u4ee5\u4e0b\u6307\u5357\uff1a<\/p>\n<ul>\n<li>\u952e\u5e94\u8be5\u5904\u4e8e [VEHICLE_PROPERTY_CUSTOM_START, VEHICLE_PROPERTY_CUSTOM_END] \u8303\u56f4\u5185\u3002\u5176\u4ed6\u8303\u56f4\u5df2\u9884\u7559\u4e0b\u6765\u4ee5\u4f9b\u5c06\u6765\u6269\u5c55\uff1b\u4f7f\u7528\u8fd9\u4e9b\u8303\u56f4\u53ef\u80fd\u4f1a\u5bfc\u81f4\u5728\u5c06\u6765\u7684 Android \u7248\u672c\u4e2d\u51fa\u73b0\u51b2\u7a81\u3002<\/li>\n<li>\u4ec5\u4f7f\u7528\u5b9a\u4e49\u7684\u00a0value_type\u3002BYTES \u7c7b\u578b\u5141\u8bb8\u4f20\u9012\u539f\u59cb\u6570\u636e\uff0c\u56e0\u6b64\uff0c\u5728\u5927\u591a\u6570\u60c5\u51b5\u4e0b\u8fd9\u5c31\u8db3\u591f\u4e86\u3002\u901a\u8fc7\u81ea\u5b9a\u4e49\u5c5e\u6027\u9891\u7e41\u53d1\u9001\u5927\u6570\u636e\u53ef\u80fd\u4f1a\u51cf\u7f13\u6574\u4e2a\u8f66\u8f86\u7f51\u7edc\u7684\u8bbf\u95ee\u901f\u5ea6\uff0c\u56e0\u6b64\uff0c\u5728\u6dfb\u52a0\u5927\u91cf\u9700\u8981 HAL \u5904\u7406\u7684\u6570\u636e\u65f6\u8981\u5c0f\u5fc3\u8c28\u614e\u3002<\/li>\n<li>\u5c06\u8bbf\u95ee\u7b56\u7565\u6dfb\u52a0\u5230\u00a0vendor_vns_policy.xml\uff08\u5426\u5219\u6240\u6709\u8bbf\u95ee\u90fd\u4f1a\u88ab\u62d2\uff09\u3002<\/li>\n<li>\u901a\u8fc7\u00a0Vendor Extension Manager\uff08\u9002\u7528\u4e8e Java \u7ec4\u4ef6\uff09\u6216 Vehicle Network Service API\uff08\u9002\u7528\u4e8e\u539f\u751f\u4ee3\u7801\uff09\u8bbf\u95ee\u3002\u8bf7\u52ff\u4fee\u6539\u5176\u4ed6\u6c7d\u8f66 API\uff0c\u56e0\u4e3a\u8fd9\u6837\u505a\u53ef\u80fd\u4f1a\u5728\u5c06\u6765\u5bfc\u81f4\u517c\u5bb9\u6027\u95ee\u9898\u3002<\/li>\n<\/ul>\n<h2>\u5904\u7406 HVAC \u5c5e\u6027<\/h2>\n<p>\u60a8\u53ef\u4ee5\u901a\u8fc7\u8bbe\u7f6e\u4e0e HVAC \u76f8\u5173\u7684\u5c5e\u6027\uff0c\u6765\u4f7f\u7528\u8f66\u8f7d HAL \u63a7\u5236 HVAC\u3002\u5927\u591a\u6570 HVAC \u5c5e\u6027\u90fd\u662f\u533a\u57df\u5c5e\u6027\uff0c\u4f46\u4e5f\u6709\u4e00\u4e9b\u975e\u533a\u57df\uff08\u5168\u5c40\uff09\u5c5e\u6027\u3002\u5b9a\u4e49\u7684\u793a\u4f8b\u5c5e\u6027\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>VEHICLE_PROPERTY_HVAC_TEMPERATURE_SET<br \/>\n\u6309\u533a\u57df\u8bbe\u7f6e\u6e29\u5ea6\u3002<\/li>\n<li>VEHICLE_PROPERTY_HVAC_RECIRC_ON<br \/>\n\u6309\u533a\u57df\u63a7\u5236\u518d\u5faa\u73af\u3002<\/li>\n<\/ul>\n<p>\u6709\u5173 HVAC \u5c5e\u6027\u7684\u5b8c\u6574\u5217\u8868\uff0c\u8bf7\u5728\u00a0vehicle.h\u00a0\u4e2d\u641c\u7d22\u00a0VEHICLE_PROPERTY_HVAC_*\u3002<\/p>\n<h2>\u5904\u7406\u4f20\u611f\u5668\u5c5e\u6027<\/h2>\n<p>\u8f66\u8f7d HAL \u4f20\u611f\u5668\u5c5e\u6027\u8868\u793a\u5b9e\u9645\u7684\u4f20\u611f\u5668\u6570\u636e\u6216\u7b56\u7565\u4fe1\u606f\uff0c\u5982\u9a7e\u9a76\u72b6\u51b5\u3002\u67d0\u4e9b\u4f20\u611f\u5668\u4fe1\u606f\uff08\u5982\u9a7e\u9a76\u72b6\u51b5\u548c\u65e5\u95f4\/\u591c\u95f4\u6a21\u5f0f\uff09\u4e0d\u9650\u5236\u4efb\u4f55\u5e94\u7528\u7684\u8bbf\u95ee\uff0c\u56e0\u4e3a\u8fd9\u4e9b\u6570\u636e\u662f\u6784\u5efa\u5b89\u5168\u8f66\u8f7d\u5e94\u7528\u6240\u5fc5\u9700\u7684\u3002\u8fd8\u6709\u4e00\u4e9b\u4f20\u611f\u5668\u4fe1\u606f\uff08\u5982\u8f66\u8f86\u901f\u5ea6\uff09\u66f4\u4e3a\u654f\u611f\uff0c\u9700\u8981\u7528\u6237\u53ef\u4ee5\u7ba1\u7406\u7684\u7279\u5b9a\u6743\u9650\u3002<\/p>\n<p>\u652f\u6301\u7684\u4f20\u611f\u5668\u5c5e\u6027\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>DRIVING_STATUS<br \/>\n\u5e94\u8be5\u652f\u6301\u3002\u8868\u793a\u5728\u5f53\u524d\u9a7e\u9a76\u72b6\u6001\u4e0b\u5141\u8bb8\u7684\u64cd\u4f5c\u3002\u6b64\u4fe1\u606f\u7528\u4e8e\u5728\u9a7e\u9a76\u8fc7\u7a0b\u4e2d\u5c4f\u853d\u4e0d\u5b89\u5168\u7684\u5e94\u7528\u3002<\/li>\n<li>NIGHT_MODE<br \/>\n\u5e94\u8be5\u652f\u6301\u3002\u786e\u5b9a\u65e5\u95f4\/\u591c\u95f4\u663e\u793a\u6a21\u5f0f\u3002<\/li>\n<li>GEAR_SELECTION\/CURRENT_GEAR<br \/>\n\u9a7e\u9a76\u5458\u9009\u62e9\u7684\u6321\u4f4d\u4e0e\u5b9e\u9645\u6321\u4f4d\u3002<\/li>\n<li>VEHICLE_SPEED<br \/>\n\u8f66\u901f\u3002\u53d7\u6743\u9650\u4fdd\u62a4\u3002<\/li>\n<li>ODOMETER<br \/>\n\u5f53\u524d\u91cc\u7a0b\u8868\u8bfb\u6570\u3002\u53d7\u6743\u9650\u4fdd\u62a4\u3002<\/li>\n<li>FUEL_LEVEL<br \/>\n\u5f53\u524d\u6cb9\u4f4d (%)\u3002<\/li>\n<li>FUEL_LEVEL_LOW<br \/>\n\u6cb9\u4f4d\u662f\u5426\u8f83\u4f4e\uff08\u5e03\u5c14\u503c\uff09\u3002<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u501f\u52a9\u5404\u79cd\u603b\u7ebf\u62d3\u6251\uff0c\u5f88\u591a\u6c7d\u8f66\u5b50\u7cfb\u7edf\u90fd\u53ef\u4ee5\u5b9e\u73b0\u4e92\u8fde\u4ee5\u53ca\u4e0e\u8f66\u8f7d\u4fe1\u606f\u5a31\u4e50 (IVI) \u7cfb\u7edf\u7684\u8fde\u63a5\u3002\u6839\u636e\u5236\u9020\u5546\u4e0d\u540c\uff0c\u6240\u63d0 &hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[13],"tags":[394,506,507,509,508,449,469],"class_list":["post-632","post","type-post","status-publish","format-standard","hentry","category-13","tag-android","tag-automotive","tag-hal","tag-hvac","tag-508","tag-449","tag-469"],"views":8641,"_links":{"self":[{"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/632","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=632"}],"version-history":[{"count":3,"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/632\/revisions"}],"predecessor-version":[{"id":638,"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/632\/revisions\/638"}],"wp:attachment":[{"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=632"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=632"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=632"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}