工具：1、车厂协议，2、CAN盒模拟器+CANTest软件，3、CAN接收终端（GSM+GPS），4、平台

CANdb++是汽车CAN总线DBC文件的编辑软件。由于官网下载的文件存在bug，在这里我将官网和修复bug的文件一并进行上传（所有的文件都在这里了）。下面提供CANdb++软件的使用教程。

越来越多的日常数字设备，包括智能手机、门锁，甚至最新的汽车，现在都使用一种称为空间感知的无线功能。具有空间感知功能的数字设备可以了解它相对于其他设备的位置，然后对这些设备的位置变化做出响应。空间感知功能使我们——这些数字设备的用户们，可以更轻松地度过每一天。

Network layer

Addressing formats 

The exchange of network layer data is supported by three addressing formats: normal, extended and mixed addressing. Each addressing format requires a different number of CAN frame data bytes to encapsulate the addressing information associated with the data to be exchanged. Consequently, the number of data bytes transported within a single CAN frame depends on the type of addressing format chosen.

The following (7.3.2 to 7.3.5) specifies the mapping mechanisms for each addressing format, based on the data link layer services and service parameters defined in ISO 11898-1.

Qualcomm Technologies International, Ltd. today continued to demonstrate its vision and leadership in the wireless audio space with the introduction of Qualcomm® aptX™ Lossless audio technology to its already extensive audio portfolio. aptX Lossless is a new capability of the proven aptX Adaptive technology and a new feature of Snapdragon Sound™ Technology that is designed to deliver CD quality 16-bit 44.1kHz lossless audio quality over Bluetooth® wireless technology.  Qualcomm Technologies has taken a systems level approach and optimized a number of core wireless connectivity and audio technologies, including aptX Adaptive, which work together to auto detect and scale-up and are designed to deliver CD lossless audio when a user is listening to a lossless music file and the RF conditions are suitable.