I read here that a 1283P owner suggested that these RX0 pin problems could be related to the PicoPower version of the chip.
Do you have a "non-P" chip to try if it shows the same behaviour (I don't have it)?
I read here that a 1283P owner suggested that these RX0 pin problems could be related to the PicoPower version of the chip.
Do you have a "non-P" chip to try if it shows the same behaviour (I don't have it)?