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Since its founding, Huahai Technology has upheld the spirit of excellence and innovation, earning unanimous praise from customers through high-quality controller products, continuously improving development tools and comprehensive technical services.
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Product Introduction
应用程序软件是汽车ECU中最重要的组成部分,ECU的功能和可靠性很大程度上取决于其应用软件部分。随着汽车电子技术不断发展,ECU电控系统代码复杂程度不断增长,ECU软件频繁地面临着变更、升级的问题。在研发初期,一般使用JTAG、BDM或Nexus等硬件物理接口下载程序,但是随着技术研发的深入及产品的生产和售后阶段,物理硬件接口下载的方式已经不能满足OEM和供应商的需求。 当前CAN总线已经广泛地应用于整车网络应用中,所以基于CAN总线的在线软件刷写功能也被广泛使用。在开发阶段,通过CAN总线在线刷写ECU代码可以方便软件开发人员设计、调试及测试软件代码等,提高工作效率和开发进度;在生产阶段,通过CAN总线在线刷写程序可以实现批量下载,方便软件版本的更新,也能免除JTAG、BDM等物理硬件接口的成本及繁杂度;在售后阶段,可以利用诊断仪等设备,通过CAN总线直接升级ECU中的软件,避免由于软件缺陷引起的产品召回事件所造成的巨大损失,也可以为ECU功能提供一个可升级的平台。
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