Ming Hsieh Department of Electrical Engineering Programming the ...
Ming Hsieh Department of Electrical Engineering Programming the ...
Ming Hsieh Department of Electrical Engineering Programming the ...
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}<br />
unsigned char up;<br />
T1SC_TOF = 0; // must read T1SC and <strong>the</strong>n write a zero in bit 7<br />
up = PTA_PTA1 ;<br />
if (up) { // if button is not pressed , up = 1<br />
if (++ cnt > 15) // and we count up in hex<br />
cnt = 0;<br />
}<br />
else { // if button is pressed , up = 0<br />
if (-- cnt < 0 || cnt > 9) // and we count down in decimal<br />
cnt = 9;<br />
}<br />
display_digit ( cnt );<br />
EE 459Lx, Rev. 5/29/13 20