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There are 3 ways to do this: one is using the hardware - which is through pin assignment. 2nd and 3rd is only involved simulation. This can be done using vector waveform files( .vwf) . In this you find all nodes using View -> utility windows -> node finder. And select the relevant node to...
go to assignments -> pin planner in quartus to link the dip switch with LT,BI and RBI. Not sure if thats what you want. Anyway, you will need the hardware to see whether it works or you can study the signal generated. There is no virtual components in quartus. :)
Sorry for the late reply,
here is the putch function. its needed for printf also.
void putch(unsigned char byte) {
/* output one byte */
while(!TRMT) /* set whilst TX in progress */
continue;
TXREG = byte;
}
apparently, i just found out that no read and write from the I2C as it fails...
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