lcdisp.c

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#include <stdlib.h>
#include <stdio.h>
#include <util/delay.h>
#include "lcdisp.h"
#include "lcd_lib.h"
#include "setup.h"

void LcdInit(void) {
  LCDinit();
  LCDclr();
  Welcome();
}

void WriteMeasVal(MEASVAL* mv) {
  LCDGotoXY(mv->pos.col, mv->pos.row);
  LCDsendChar(mv->name);
  WriteValue(mv);
}

void WriteValue(MEASVAL* mv) {
  UCHAR sVal[VALUE_LENGTH];

  switch(mv->dt)
  {
  case DT_UCHAR:
  case DT_CHAR:
    ntofa(*ToUchar(mv->value), sVal, mv->dt);
    break;
  case DT_FLOAT:
  case DT_UINT:
  case DT_INT:
  case DT_TIME:
    ntofa(*ToUint(mv->value), sVal, mv->dt);
    break;
  default: //DT_STRING
  LCDstring(ToUchar(mv->value));
  return;
  }
  LCDstring(sVal);
}

void WriteSetupValue(SETUP_ITEM* si, UCHAR allow, UCHAR id) {
  MEASVAL mv;
  UCHAR pos = 0;

  //determine position of name by the straightness of the item id
  pos = ((id & 0x01) == 0x01) ? POS_2ND_NAME : POS_1ST_NAME;
//  if(si->pos == POS_2ND_VAL)
//    pos = POS_2ND_NAME;
  LCDGotoXY(pos, 0);
  LCDstring(si->name);
  mv.dt = si->type;
  mv.value = &(si->value);
  LCDGotoXY(/*si->pos*/pos == POS_2ND_NAME ? POS_2ND_VAL : POS_1ST_VAL, 1);
  if(allow)
    WriteValue(&mv);
  else
    LCDstring((UCHAR*)"       ");
}

void WriteSetupGroup(UCHAR grp) {
  LCDGotoXY(POS_GRP_START, 0);
  LCDstring((UCHAR*)"        ");
  LCDGotoXY(POS_GRP_START, 0);
  switch(grp) {
  case SG_CTRL:
    LCDstring((UCHAR*)"control");
    break;
  case SG_MEAS:
    LCDstring((UCHAR*)"measure");
    break;
  case SG_LIMIT:
    LCDstring((UCHAR*)"limits");
    break;
  }
}

void WriteCtrlMode(UCHAR name, UCHAR* cmName) {
  LCDGotoXY(8, 1);
  LCDstring((UCHAR*)"        ");
  LCDGotoXY(8, 1);
  LCDsendChar(name);
  LCDGotoXY(11, 1);
  LCDstring(cmName);
}

void ntofa(UINT val, UCHAR* buf, DATTYPE dt) {
  UCHAR digits[NUM_LEN], i=0, is=0, d=0, numLen=NUM_LEN, decPt=DF_DECPT, brDbdp=BR_DBDP;
  UINT exp=0, sMask = 0, vMask = 0;
  
  //possibly negative value?
  switch(dt) {
  case DT_CHAR:
  case DT_INT:
    switch(dt) {
    case DT_CHAR:
      sMask = 0x0080;
      vMask = 0x00FF;
      decPt = '0';
      break;
    case DT_INT:
      sMask = 0x8000;
      vMask = 0xFFFF;
      break;
    default:
      break;
    }
    if((val & sMask) == sMask)
    {
      val = vMask - val + 1;
      buf[0] = '-';
      --numLen;
      is = 1;
    }
    break;
    case DT_TIME:
      decPt = ':';
      ++brDbdp;
      break;
    case DT_UCHAR:
      decPt = '0';
      break;
    default:
      break;
  }
  for(i=0; i<numLen; ++i)
  {
    exp = _exp10(numLen-i-1);
    if(exp == 0) {
      digits[i] = exp;
      continue;
    }
    digits[i] = (val / exp);
    val -= (digits[i] * exp);
  }
  for(i=is; i<VALUE_LENGTH; ++i)
  {
    if(i == brDbdp)
      buf[i] = decPt;
    else if(i == VALUE_LENGTH - 1)
      buf[i] = '\0';
    else
    {
      buf[i] = digits[d] + ALNUM_BASE;
      ++d;
    }
  }  
}

UINT _exp10(UCHAR n) {
  UINT res=1;
  UCHAR i=0;
  
  if(n==0)
  {}
  else if(n < NUM_SDG)
  {
    for(i=0; i<n; ++i)
      res *= NUM_BASE;
  }
  else
    res = 0;
  return res;    
}

void Welcome(void) {
  LCDstring((UCHAR*)"  heat control");
  LCDGotoXY(0,1);
  LCDstring((UCHAR*)"  ");
  LCDstring((UCHAR*)FW_REV);
  LCDstring((UCHAR*)" by woodz");
  _delay_ms(3000);
  LCDclr();
}