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    • 7. 发明授权
    • One wire boot loader
    • 一个导线装载机
    • US07953965B2
    • 2011-05-31
    • US12157986
    • 2008-06-13
    • Fugen QinDaniele BrottoDanh TrinhRegina CunananAndrew Seman
    • Fugen QinDaniele BrottoDanh TrinhRegina CunananAndrew Seman
    • G06F15/177
    • G06F9/4401
    • A power tool system component has a microprocessor, a one wire communication terminal connecting the microprocessor to an external device, and a flash memory storing: (a) an application program governing operation of an application mode during which the power tool system component is operated; and (b) a boot loader program governing operation of a boot loader mode during which at least part of the application program can be updated. The microprocessor accesses the flash memory and implements the boot loader program and the application program by setting up and observing a temporal window during which one or more predetermined conditions must be met for the boot loader mode to be entered. The predetermined conditions include successful completion of a calibration process that includes sending a calibration byte to the external device according to a format predetermined to allow the external device to adjust its baud rate for sending and receiving information. Upon successful completion of the conditions within the temporal window, the microprocessor sends a confirmation to the device that the conditions have been satisfied and enters the boot loader mode.
    • 电动工具系统组件具有微处理器,将微处理器连接到外部设备的单线通信终端和闪存,其存储:(a)控制电动工具系统组件在其中操作的应用模式的操作的应用程序; 以及(b)引导加载程序,其管理引导加载程序模式的操作,在该引导加载程序模式期间可以更新应用程序的至少一部分。 微处理器访问闪速存储器并通过建立和观察时间窗口来实现引导加载程序和应用程序,在该时间窗口期间,必须满足要输入的引导加载程序模式的一个或多个预定条件。 预定条件包括成功完成校准过程,其包括根据预定的格式向外部设备发送校准字节,以允许外部设备调整其发送和接收信息的波特率。 在成功完成时间窗口内的条件之后,微处理器向设备发送一个已经满足条件并进入引导加载程序模式的确认。