OK, I am confused. I'm using the Nohau LPC210x eval board and for some reason I can't set GPIO's P0.2 and P0.3 as high output. If I set IODIR = 0x0000000F and then IOSET = 0x0000000F I get IOPIN 0x00000003 (which is reflected on the external pins). PINSEL0 and PINSEL1 are both 0, so as I understand it all pins should be GPIO's. I have done nothing to enable I2C (although given PINSEL0 it shouldn't do anything even if I had). I've also tried this at reset and gotten the same result. I can set P0.0 and 0.1 (and any other gpio I've tried). I'd use different pins except that they've wired JTAG into the primary port so this means I lose P0.17-31 (there's no way to turn off the trace interface correct?). What am I missing here? Do I just need more coffee? Thanks! Shannon
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Dumb GPIO question
2004-05-28 by Shannon Holland
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