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基于HI-TECH C的PIC12C508读写93LC4源程序

基于HI-TECH C的PIC12C508读写93LC4源程序

点击数:7910 次   录入时间:03-04 11:58:51   整理:http://www.55dianzi.com   源码-程序

    /************************************************************
 * Processer : MICroChip PIC12C508        *
 * Compiler : Hi-TECH PICC 8.00 PL2      *
 * Writer : Jason Kuo          *
 * Description : It CAN read/write 93LC46 (64 x 16-bit organization) *
 *************************************************************/
 
static volatile unsigned char RTCC @ 0x01;
static volatile unsigned char TMR0 @ 0x01;
static volatile unsigned char PCL @ 0x02;
static volatile unsigned char STATUS @ 0x03;
static          unsigned char FSR @ 0x04;
static volatile unsigned char OSCCAL @ 0x05;
static volatile unsigned char GPIO @ 0x06;

    static          unsigned char control OPTION @ 0x00;
static volatile unsigned char control TRIS @ 0x06;

    /* STATUS bits */
static bit  GPWUF @ (unsigned)&STATUS*8+7;
static bit PA0 @ (unsigned)&STATUS*8+5;
static bit  TO @ (unsigned)&STATUS*8+4;
static bit  PD @ (unsigned)&STATUS*8+3;
static bit  ZERO @ (unsigned)&STATUS*8+2;
static bit DC @ (unsigned)&STATUS*8+1;
static bit CARRY @ (unsigned)&STATUS*8+0;

    /* OPTION bits */
#define  GPWU (1<<7)
#define  GPPU (1<<6)
#define  T0CS (1<<5)
#define  T0SE (1<<4)
#define  PSA (1<<3)
#define  PS2 (1<<2)
#define  PS1 (1<<1)
#define  PS0 (1<<0)

    /*      OSCCAL bits    */
static volatile bit    CAL3    @ (unsigned)&OSCCAL*8+7;
static volatile bit    CAL2    @ (unsigned)&OSCCAL*8+6;
static volatile bit    CAL1    @ (unsigned)&OSCCAL*8+5;
static volatile bit    CAL0    @ (unsigned)&OSCCAL*8+4;

    static volatile bit GP5 @ (unsigned)&GPIO*8+5;
static volatile bit GP4 @ (unsigned)&GPIO*8+4;
static volatile bit GP3 @ (unsigned)&GPIO*8+3;
static volatile bit GP2 @ (unsigned)&GPIO*8+2;
static volatile bit GP1 @ (unsigned)&GPIO*8+1;
static volatile bit GP0 @ (unsigned)&GPIO*8+0;

    #define CONFIG_ADDR 0xFFF

    /* code protection */
#define MCLREN  0xFFFF // memory clear enable
#define MCLRDIS  0xFFEF // memory clear dISAble

    /*watchdog*/
#define WDTEN  0xFFFF // watchdog timer enable
#define WDTDIS  0xFFFB // watchdog timer disable

    /* code protection */
#define PROTECT  0xFFF7 // protect the program code
#define UNPROTECT 0xFFFF // do not protect the program code

    /*osc configurations*/
#define EXTRC    0xFFFF // external resistor/caPACitor
#define INTRC  0xFFFE // internal
#define XT  0xFFFD // crystal/resonator
#define LP  0xFFFC // low power crystal/resonator

    /* 93LC46 I/O PIN define */
#define CS  GP0  //Chip Select
#define CLK GP1  //Serial Data CLOCk
#define DI GP2  //Serial Data Input
#define DO GP4  //Serial Data Output

    void Delay(unsigned int counter);
void Pulse(void);
void StartBit(void);
void EWEN(void);
void EWDS(void);
extern void Write93LC46(unsigned char Offset_Addr, unsigned int tx_data); 
extern unsigned int Read93LC46(unsigned char Offset_Addr);
void InitPIC(void);

    #define CLRWDT() asm(" clrwdt")
#define SLEEP()  asm(" sleep")

    #define ___mkstr1(x) #x
#define ___mkstr(x) ___mkstr1(x)
#define __CONFIG(x) asm("tpsect config,class=CONFIG,delta=2");
  asm("tglobaltconfig_word");
  asm("config_word");
  asm("tdw "___mkstr(x))

    #define __IDLOC(w)      asm("tpsect idloc,class=IDLOC,delta=2");
    asm("tglobaltidloc_word");
    asm("idloc_word");
    asm("tirpct__arg," ___mkstr(w));
    asm("tdw 0&__arg&h");
    asm("tendm")

   

     

   
__CONFIG(MCLRDIS & WDTDIS & EXTRC & PROTECT);

   
/*----------------------------------------------------
 Function : Delay         
 Input : unsigned int (counter)       
 Output : None         
 Description : Delay routine       
 if counter=1  delay 35us , if counter=10 delay 134us,
 if counter=100 delay 1.12ms,
 These delay is base on internal 4MHz     
------------------------------------------------------*/     
void Delay(unsigned int counter)
{
  while(counter>0) counter--; 
}                                   

   
/*----------------------------------------------------
 Function : Pulse         
 Input : None       
 Output : None         
 Description : Send a pulse (10) to Serial Data Clock(CLK)       
------------------------------------------------------*/     
void Pulse(void)
{
    CLK = 1;
    Delay(25);
    CLK = 0;
}



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    /*---------------------------------------------------- 

 Function : StartBit         
 Input : None       
 Output : None         
 Description : 
 1. Set Chip Select(CS) = 1 (high)
 2. Set a Start Bit(1) to Serial Data Input(DI)
------------------------------------------------------*/     
void StartBit(void)
{
    CS = 1;
    DI = 1;
    Pulse();
}

    /*----------------------------------------------------
 Function : EWEN         
 Input : None       
 Output : None         
 Description :  ERASE/WRITE Enable
 ------------------------------------------------------*/     
void EWEN(void)
{
    unsigned char i,temp;

        StartBit();                  /* 1 */

        temp = 0x80;                        /* 0011xxxx ,(opcode:00, Address:11xxxx) */
    for(i=0; i<8; i++) {
        if(0x30 & temp)
            DI = 1;
        else
            DI = 0;
        Pulse();
        temp >>= 1;
    }

        CS = 0;
}

    /*----------------------------------------------------
 Function : EWDS         
 Input : None       
 Output : None         

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