Fixed your link.
This indicated that TXD2 was on GPIO4 and RXD2 was on GPIO5. Then from a pinout diagram like https://vilros.com/pages/raspberry-pi-5-pinout I was able to locate these pins on the header.
You can also use the pinout command in RaspiOS
Code:
rpdom@raspi16:~ $ pinoutDescription : Raspberry Pi 5B rev 1.0Revision : d04170SoC : BCM2712RAM : 8GBStorage : MicroSDUSB ports : 4 (of which 2 USB3)Ethernet ports : 1 (1000Mbps max. speed)Wi-fi : TrueBluetooth : TrueCamera ports (CSI) : 2Display ports (DSI): 2,--------------------------------.| oooooooooooooooooooo J8 : +====| 1ooooooooooooooooooo : |USB2| Wi Pi Model 5B V1.0 fan +====| Fi +---+ +---+ || |RAM| |RP1| +====||p +---+ +---+ |USB3||c ------- +====||i SoC |c|c J14 |( ------- J7|s|s 12 +======| J2 bat uart 1|i|i oo | Net| pwr\..|hd|...|hd|o|1|0 +======`-| |-1o|m0|---|m1|--------------'J8: 3V3 (1) (2) 5V GPIO2 (3) (4) 5V GPIO3 (5) (6) GND GPIO4 (7) (8) GPIO14 GND (9) (10) GPIO15GPIO17 (11) (12) GPIO18GPIO27 (13) (14) GND GPIO22 (15) (16) GPIO23 3V3 (17) (18) GPIO24GPIO10 (19) (20) GND GPIO9 (21) (22) GPIO25GPIO11 (23) (24) GPIO8 GND (25) (26) GPIO7 GPIO0 (27) (28) GPIO1 GPIO5 (29) (30) GND GPIO6 (31) (32) GPIO12GPIO13 (33) (34) GND GPIO19 (35) (36) GPIO16GPIO26 (37) (38) GPIO20 GND (39) (40) GPIO21J2:RUN (1)GND (2)J7:COMPOSITE (1) GND (2)J14:TR01 TAP (1) (2) TR00 TAPTR03 TAP (3) (4) TR02 TAPFor further information, please refer to https://pinout.xyz/Statistics: Posted by rpdom — Mon Dec 02, 2024 10:45 am