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DM36x WDT问题

  1. 看门狗一旦开启,软件边便无法关闭它是么?
  2. 看门狗溢出复位会使368内部的各个模块全都一起复位吗?
  3. 368看门狗溢出复位的时候,能否向外面发出一个复位信号,以便使外围电路的其他芯片一起复位?

  • 1. 看门狗一旦开启,软件边便无法关闭它是么?

    【Chris】下面的信息可以在timer user guide里面找到:

     Once the watchdog timer is activated, it can be disabled only by a watchdog timeout event or by a hardware reset.

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    2. 看门狗溢出复位会使368内部的各个模块全都一起复位吗?

    【Chris】下面的信息可以在ARM subsystem guide里面找到:

    Table 106. Reset Types

     Type                   Initiator                                                                                                 Effect

    Warm Reset     RESETN pin low and TRSTN high (initiated by emulator).         ARM Resets all modules including memory, except ARM emulation.

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    3. 368看门狗溢出复位的时候,能否向外面发出一个复位信号,以便使外围电路的其他芯片一起复位?

    【Chris】抱歉,DM36x没有WDT信号输出引脚

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    注意,你需要更新你的ubl为IPNC 5.1里面的最新ubl或者是下面帖子的ubl,以保证复位可以每次成功。

    http://www.deyisupport.com/question_answer/dsp_arm/davinci_digital_media_processors/f/39/t/9002.aspx