配置时钟

2万 · 2019-3-13 15:16

我配置的感觉不对，有高手帮解答下么，系统时钟32MHz
MA84G564

2万 · 2019-3-13 15:19

IFADRH = 0x00;
      IFADRL = 0x40;
      ISPCR |= 0x80;
      IFMT = 0x04;
      IFD = 0x10;
      SCMD = 0x46;
      SCMD = 0xb9;
      for(i=0;i<50;i++);
      IFADRH = 0x00;
      IFADRL = 0x40;
      ISPCR |= 0x80;
      IFMT = 0x04;
      IFD = 0x18;
      SCMD = 0x46;
      SCMD = 0xb9;
      IFMT = 0x00;
      ISPCR &= 0x7f;

2万 · 2019-3-13 15:26

      CKCON0 |= 0x40;                            //ENCKM
      IFADRH = 0x00;
      IFADRL = 0x44;                            //
      ISPCR |= 0x80;
      IFD=0x85;                                  //set HSE=1
      IFMT = 0x04;                            //write PCON2
      SCMD = 0x46;
      SCMD = 0xb9;

      IFADRH = 0x00;
      IFADRL = 0x40;
      IFD = 0x58;                                  //set MCKS1=1，set MCKS0=0
      IFMT = 0x04;                            //write CKCON2
      SCMD = 0x46;
      SCMD = 0xb9;

      IFMT = 0x00;
      ISPCR &= 0x7f;

2万 · 2019-3-13 15:31

楼上正解

2万 · 2019-3-13 15:34

哦，我看下，多谢了啊