为啥编译不对

只看该作者 · 2011-9-26 08:51

从网上下了段代码，应该没错，可是就是变不过去

显示

Debug build of project `D:\project6\12f683\pic18f252\252.mcp' started.
Language tool versions: mpasmwin.exe v5.35, mcc18.exe v3.35
Preprocessor symbol `__DEBUG' is defined.
Mon Sep 26 09:05:01 2011
----------------------------------------------------------------------
Make: The target "D:\project6\12f683\pic18f252\252.o" is up to date.
Couldn't locate build tool.  Check tool locations.
----------------------------------------------------------------------
Debug build of project `D:\project6\12f683\pic18f252\252.mcp' failed.
Language tool versions: mpasmwin.exe v5.35, mcc18.exe v3.35
Preprocessor symbol `__DEBUG' is defined.
Mon Sep 26 09:05:02 2011
----------------------------------------------------------------------
BUILD FAILED

错在哪？ code如下

#include <p18F252.h>
#pragma config OSC = XT, OSCS = OFF, PWRT = ON, BOR = OFF, WDT = OFF, STVR = ON, LVP = OFF, DEBUG = OFF
//----------------------------------------------------------------------------
void main (void);
void InterruptHandlerHigh (void);
union
{
  struct
  {
unsigned Timeout:1;       //flag to indicate a TMR0 timeout
unsigned None:7;
  } Bit;
  unsigned char Byte;
} Flags;
//----------------------------------------------------------------------------
// Main routine
void main () {
Flags.Byte = 0;
INTCON = 0x28;    //disable global and enable TMR0 interrupt and RB
INTCON2 = 0x85;    //TMR0 high priority
RCONbits.IPEN = 1; //enable priority levels
TMR0H = 0;    //clear timer and set TMR0H
TMR0L = 0;    //clear timer low byte and also updates high byte from TMR0H
T0CON = 0x88;    //set up timer0 - no prescaler
INTCONbits.GIEH = 1; //enable interrupts
TRISB = 0x7E;    //PORTB bits 0 and 7 are output, the rest are input
TRISC = 0;    //PORTC bits are output
PORTC = 0;
while (1) {
  if (Flags.Bit.Timeout == 1) {                               //timeout?
Flags.Bit.Timeout = 0;          //clear timeout indicor
LATBbits.LATB7 = LATBbits.LATB0; //copy LED state from RB0 to RB7
  }
}
}
//----------------------------------------------------------------------------
// High priority interrupt vector
#pragma code InterruptVectorHigh = 0x08
void
InterruptVectorHigh (void)
{
  _asm
goto InterruptHandlerHigh //jump to interrupt routine
  _endasm
}
//----------------------------------------------------------------------------
// High priority interrupt routine
#pragma code
#pragma interrupt InterruptHandlerHigh
void InterruptHandlerHigh () {
if (INTCONbits.RBIF) {
  PORTC = PORTB;
  INTCONbits.RBIF = 0;
}
if (INTCONbits.TMR0IF) { //check for TMR0 overflow
  INTCONbits.TMR0IF = 0; //clear interrupt flag
  Flags.Bit.Timeout = 1; //indicate timeout
  LATBbits.LATB0 = !LATBbits.LATB0; //toggle LED on RB0
}
}
//----------------------------------------------------------------------------