Rak19003 rx/tx pins

WisBlock
1

Looking at the rak19003, I’m seeing TX0 and RX0 pins, but looking at the datasheet for the same board revision (B), I’m seeing they’re marked as TX1 and RX1, which is what is on the rak19007.

For reference, see the following images - you can see the actual rak19003 I have here has tx0 and rx0, but the datasheet diagram shows tx1 and rx1.

Which are they in firmware? Thank you

RAK19007_21
RAK19007_21700×700 127 KB

rak19003-overview1
rak19003-overview11605×643 150 KB

PXL_20241017_184642766
PXL_20241017_1846427661516×1918 304 KB

  • List item
2

Different board versions.
On the one with a half mounting hole it is Serial1, on the one with the full mounting hole it is Serial2 (If I remember correct)