// filename  dstestb.C  
// Jonathan W. Valvano
// 12/13/99  SPI solution to DS1620 interface
// See Valvano, Embedded Microcomputer Systems, Chap 7
// test of DS1620 interface
#include "HC12.h"
#include "SCI12.H"
#include "DS1620.H"

// Nonvolatile structure placed in EEPROM
const struct Node{
    unsigned char Letter;     
    void (*fnctPt)(void);
    const struct Node *Next;};  
typedef const struct Node NodeType;
typedef NodeType * NodePtr;

void CommandReadT(void){ int T;
 OutString("\nRead Temperature ");
 T=DS1620ReadT();
 OutSDec(T); 
}
void CommandReadTH(void){ int TH;
 OutString("\nRead TH ");
 TH=DS1620ReadTH();
 OutSDec(TH); 
}
void CommandReadTL(void){ int TL;
 OutString("\nRead TL ");
 TL=DS1620ReadTL();
 OutSDec(TL); 
}
void CommandReadConfig(void){ unsigned int config;
 OutString("\nRead Config ");
 config=DS1620ReadConfig();
 OutUHex(config); 
}
void CommandStart(void){ 
 OutString("\nStart ");
 DS1620Start(); 
}
void CommandWriteTH(void){ int TH;
 OutString("\nWrite TH, provide value ");
 TH=InSDec();
 DS1620WriteTH(TH); 
}
void CommandWriteTL(void){ int TL;
 OutString("\nWrite TL, provide value ");
 TL=InSDec();
 DS1620WriteTL(TL); 
}
void Help(void){
  OutString("\n s starts temperature measurement");
  OutString("\n t display last temperature measurement");
  OutString("\n H sets TH threashold");
  OutString("\n h displays TH");
  OutString("\n L sets TL threashold");
  OutString("\n l displays TL");}
// load into EEPROM
NodeType LL[8]={
{ 't', &CommandReadT,      &LL[1]},
{ 'h', &CommandReadTH,     &LL[2]},
{ 's', &CommandStart,      &LL[3]},
{ 'c', &CommandReadConfig, &LL[4]},
{ 'H', &CommandWriteTH,    &LL[5]},
{ 'L', &CommandWriteTL,    &LL[6]},
{ '?', &Help,              &LL[7]},
{ 'l', &CommandReadTL, 0 }};

void Init(void){
   COPCTL=0x00;    // disable COP 
   DDRT|=0x40;     // PortT bit 6 is output to LED
   TSCR=0x80;      // TEN(enable)
}

void main(void){ NodePtr Pt; char string[40];
 InitSCI();
 Init();     // disable COP, enable Port T 
 DS1620Init();
 DS1620WriteConfig(0x03);  // CPU mode, single shot
 OutString("\nDS1620 SPI interface  12/13/99 -JWV");
 Help();
 OutString("\nEnter a single letter command followed by <enter>"); 
 while(1){
   PORTT ^= 0x40;   // toggle LED
   OutString("\n>"); 
   InString(string,39);
   Pt=&LL[0];           // first node to check
   while(Pt){
     if(string[0]==Pt->Letter){
         Pt->fnctPt();
         Pt=0;}
     else{
         Pt=Pt->Next;
         if(Pt==0) OutString(" Error");}}}}
#include "SCI12.C"
#include "DS1620b.C"

extern void _start();	
#pragma abs_address:0xfffe
void (*reset_vector[])() = { _start };
#pragma end_abs_address