types.c

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#include "types.h"


UINT SetLimitValue(UINT val, DATTYPE dt, CHAR dir, INT min, INT max) {
  UCHAR offset = 0;

  switch(dt) {
  case DT_CHAR:
  case DT_UCHAR:
    offset = OFF_NEAR;
    break;
  case DT_INT:
  case DT_UINT:
    offset = OFF_FAR;
    break;
  default:
    break;
  }
  val += (CHAR)((CHAR)offset * dir);
  switch(dt) {
  case DT_CHAR:
  case DT_INT:
    if((INT)val > max)
      val = min;
    if((INT)val < min)
      val = max;
    break;
  default:
    if(val > (UINT)max)
      val = min;
    if(val < (UINT)min)
      val = max;
    break;
  }

  return val;
}

UCHAR FlipByte(UCHAR x) {
  x = ((x >> 1) & 0x55) | ((x << 1) & 0xaa);
  x = ((x >> 2) & 0x33) | ((x << 2) & 0xcc);
  x = ((x >> 4) & 0x0f) | ((x << 4) & 0xf0);
  return x;
}

UCHAR* GetCtrlMode(CTRL_MODE ctm, UCHAR* buf) {
  switch(ctm) {
  case CM_DENY:
    buf = (UCHAR*)"DENY";
    break;
  case CM_MEAS:
    buf = (UCHAR*)"MEAS";
    break;
  case CM_REC:
    buf = (UCHAR*)"REC";
    break;
  case CM_FOR:
    buf = (UCHAR*)"FOR";
    break;
  case CM_SHDN:
    buf = (UCHAR*)"SHDN";
    break;
  }
  return buf;
}