read_ime6400_id.c

来自「用单片机实现E1等芯片的初始化」· C语言 代码 · 共 30 行

 union word_byte union_temp;
    AUXR |= 0X02;                // set external xram memory
   

/*%%%%%%%%%%%%%%%%%%%%%%%%%%%%% READ IME6400 ID %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/


   AUXR |= 0X02;

  ime6400_id_bit = 0;
  while(!ime6400_id_bit)
  {

    uchar temp = 0;

    temp =  XBYTE[0X0002];
    _nop_();
    _nop_();
    union_temp.byte8[1] = XBYTE[0X0000];

    union_temp.byte8[0] = XBYTE[0X0001];

    if( 0x0e59 == union_temp.word16 )
      {
        ime6400_id_bit = 1;             //ime6400 id =0x0e59
      }
    delay20us();

  }