The invention relates to an in-vehicle infotainment system, a data transmission method for the in-vehicle infotainment system and a vehicle comprising the in-vehicle infotainment system. The data transmission method comprises the following steps: initializing a vehicle-mounted infotainment system into a DMA mode; in response to the received serial port data, temporarily storing the serial port data to the DMA controller and detecting the state of the DMA controller; and in response to detecting that the DMA controller is in the idle state or the full reading state, transmitting serial port data from the DMA controller to a main processor of the in-vehicle infotainment system.
本申请涉及一种车机系统、用于车机系统的数据传输方法和包括车机系统的车辆。该数据传输方法包括:将车机系统初始化为DMA模式;响应于接收到串口数据,将串口数据暂存至DMA控制器并且检测DMA控制器的状态;以及响应于检测到DMA控制器处于空闲状态或读满状态,从DMA控制器向车机系统的主处理器传输串口数据。
In-vehicle infotainment system, data transmission method for same and vehicle comprising same
车机系统、用于其的数据传输方法和包括其的车辆
2023-07-11
Patent
Electronic Resource
Chinese
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