Hi,
I am trying to connect a led directly on IO0 and on IO1 (with a 220 ohm resistor in series with each LED). when I do that, communication with arduino stops.
I noticed that the IO0 and IO1 pins also have the TX and RX functionality.
is there any limitations on these pins that prevent me from connecting the leds as I wanted?
ZvikaRozenshein:
Hi,
I am trying to connect a led directly on IO0 and on IO1 (with a 220 ohm resistor in series with each LED). when I do that, communication with Arduino stops.
I noticed that the IO0 and IO1 pins also have the TX and RX functionality.
Exactly!
Ergo, you cannot use them as I/O if you want to have communication with the serial port.