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Hello
I am new to fpga and vhdl. I am trying to make a i2c bridge between ARM (Sam4s Xplained pro) and Deo nano. I used a i2c slave source from https://github.com/oetr/fpga-i2c-slave It worked fine, I can read and write array to deo nano. Now the problem is that I have 80 IO in total, some are pwm, and some are encoder reading, all work perfectly, when I used the below pinouts. (I took it randomly at the beginning) http://www.alteraforum.com/forum/attachment.php?attachmentid=12535&stc=1 However, Now due to convenience I want to use the below pinouts http://www.alteraforum.com/forum/attachment.php?attachmentid=12536&stc=1 But it is now working! if I load it, the i2c bridge stops working. but both ARM and deo nano do the other tasks normally, except they dont talk. http://www.alteraforum.com/forum/attachment.php?attachmentid=12537&stc=1 Is there any formal way to erase the previous pinouts in Quartus? what I am missing? Thanks for your answersLink Copied
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