Silicon Laboratories Stepper Machine Manual do Utilizador descarregar pdf (Página 31)

AN155

Rev. 1.1 31

putc(*string); // put character at pointer in buffer

string++; // increment pointer

}

//-----------------------------------------------------------------------------

unsigned int getuint(void) // get string and convert to int

{

char theChar;

unsigned int i;

i=0; // build value in i

theChar=getc(); // get next character

while( theChar<'0' || theChar>'9') // while not 0-9

theChar=getc();

while(theChar>='0' && theChar<='9') // while 0-9

{

theChar -= '0'; // convert from ASCII

i *= 10; // shift decimal point

i += theChar; // add next digit

theChar=getc();

}

return i; // return int value

}

//-----------------------------------------------------------------------------

void putuint(unsigned int i)

{

char string[7]; // string used to build output

char *sp; // string pointer

sp=string + 6; // build back to front

*sp=0; // insert null character

{

sp--; // predecrement pointer

*sp=i%10 + 0x30; // take modulus add 30

i/=10; // divide i by 10

} while (i); // while i not zero

// now output front to back

while (*sp) // while not null character

{

putc(*sp); // put character in buffer

sp++; // increment pointer

}

//-----------------------------------------------------------------------------

unsigned char getuchar () // same as getuint but returns uchar

{

char theChar;

unsigned char i;

i=0; // build value in i

theChar=getc(); // get next character

while( theChar<'0' || theChar>'9') // while not 0-9

theChar=getc();

while(theChar>='0' && theChar<='9') // while 0-9

{

theChar -= '0'; // convert from ASCII

i *= 10; // shift decimal point

i += theChar; // add next digit

theChar=getc();

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