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28379d boot引脚被占用怎么办



哪位大神知道28379d boot引脚被占用怎么办 我发现在28335上好多开发板并没有引出boot引脚 不知道是怎么回事

  • On this device,customers can change the factory default boot mode pins by programming user configurable DCSM OTP
    locations. This is recommended only for cases in which the factory default boot mode pins do not fit into
    the customer design. More details on the locations to be programmed is available in the TMS320F2837xD
    Dual-Core Delfino Microcontrollers Technical Reference Manual (SPRUHM8).

    根据数据手册6.10章节中的描述,用户可以通过编程DCSM OTP来指定两个GPIO来代替默认的GPIO72/84。

    另外这边帖子也可参考:http://www.deyisupport.com.edgekey.net/question_answer/microcontrollers/c2000/f/56/t/121982.aspx

  • 哪位大神知道28379d boot引脚被占用怎么办 我发现在28335上好多开发板并没有引出boot引脚 不知道是怎么回事

    Eric:

    首先被占用了是什么意思,你想做什么?

    默认boot引脚只要在上电的瞬间给个高电平就好,过了引导阶段,即跑到main的时候,booty引脚是用户自行支配的。

  • boot引脚正好是外部存储接口的数据线,您的意思是boot引脚只是刚开始使用,并不会影响后期外部存储的使用对吧?

  • boot只是在上电瞬间去判断    接下来正常使用做外设  

    相互不会影响