Getting Started

Chapter 8: C Pointers and Arrays

2);

SL;

TE);

MH >> 4) + '0';

gSECOND);

) + '0';

sendFString(THE_TIME_IS);

// Count tens

++;

}

return (high << 4) | input; // Add ones and return answer
}

sendFString(ERROR_1
}
}

void showClock(void)
{
uint8_t HH, HL, MH, ML, SH,

HH = CHAR2BCD2(gHOUR);

HL = (HH & 0x0F) + '0';
HH = (HH >> 4) + '0';

MH = CHAR2BCD2(gMINU
ML = (MH & 0x0F) + '0';
MH = (

SH = CHAR2BCD2(
SL = (SH & 0x0F
SH = (SH >> 4) + '0';

sendChar(HH);
sendChar(HL);
sendChar(':');
sendChar(MH);
sendChar(ML);
sendChar(':');
sendChar(SH);
sendChar(SL);
sendChar('\r');

}

// convert a character into a binary coded decimal chracter in the range
// 0 to 99 resulting byte has tens in high nibble and ones in low nibble
char CHAR2BCD2(char input)
{
char high = 0;

while (input >= 10)
{
high
input -= 10;