Embedded Systems Design with the Atmel AVR Microcontroller Part II
Embedded Systems Design with the Atmel AVR Microcontroller Part II
Embedded Systems Design with the Atmel AVR Microcontroller Part II
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200 CHAPTER 7. ATMEL <strong>AVR</strong> OPERATING PARAMETERS AND INTERFACING<br />
case 0: output_value = 0x7E;<br />
break;<br />
case 1: output_value = 0x30;<br />
break;<br />
case 2: output_value = 0x6D;<br />
break;<br />
case 3: output_value = 0x79;<br />
break;<br />
case 4: output_value = 0x33;<br />
break;<br />
case 5: output_value = 0x5D;<br />
break;<br />
case 6: output_value = 0x1F;<br />
break;<br />
case 7: output_value = 0x70;<br />
break;<br />
case 8: output_value = 0x7F;<br />
break;<br />
case 9: output_value = 0x73;<br />
break;<br />
default:;<br />
}<br />
if(decimal_point != 0)<br />
PORTC = output_value | 0x80; //illuminate decimal point<br />
switch(position) //assert position<br />
{<br />
case 0: PORTD = 0x01; //least significant bit