p3.c

英飞凌的CAN驱动。英飞凌的CAN非常复杂

#include<XC886CLM.H>
P3_init()
 {
  PORT_PAGE  = 0x00;
  P3_DIR     = 0xFF;    // all output


  PORT_PAGE  = 0x03;
  P3_OD      = 0x00;    // normal mode
    PORT_PAGE  = 0x01;
  P3_PUDSEL  = 0xFF;    // pull-up
  P3_PUDEN   = 0x01;    // pull-up disable
     PORT_PAGE  = 0x02;
  P3_ALTSEL0 = 0x00;
  P3_ALTSEL1 = 0x00;    // normal GPIO
   PORT_PAGE  = 0x00;
 }