From 5868eda5c14e0cd22050bc2e99bd4a2e4aa15513 Mon Sep 17 00:00:00 2001
From: MooCat <43627985+mooleshacat@users.noreply.github.com>
Date: Thu, 11 Jun 2026 17:46:30 -0400
Subject: [PATCH] Update README.md

added confirmed uart pinout
---
 README.md | 27 ++++++++++++++++++++++-----
 1 file changed, 22 insertions(+), 5 deletions(-)

diff --git a/README.md b/README.md
index 2a40ead..c541af5 100644
--- a/README.md
+++ b/README.md
@@ -11,7 +11,7 @@ This post contains only the DTS source code to facilitate community assistance i
 - TRENDnet support system is here: https://www.trendnet.com/support/
 - TRENDnet contact is here: https://www.trendnet.com/company/contact-us.asp
 
-### You may follow my port of TEW-829DRU to OpenWRT by [visiting the repository](https://github.com/catspeed-cc/openwrt) and [this support ticket](https://github.com/catspeed-cc/openwrt/issues/1)
+### You may follow my port of TEW-829DRU to OpenWRT by [visiting the repository](https://github.com/catspeed-cc/openwrt), the DTS file and [this support ticket](https://github.com/catspeed-cc/openwrt/issues/1)
 
 ### For more information about OpenWRT [visit their website](https://openwrt.org/)
 
@@ -111,17 +111,34 @@ DTSI File:							qcom-ipq4019-ap.dk04.1.dtsi
 
 
 
+							################
+							## KNOWN UART ##
+							################
+							
+UART HEADER:	is a 4 pin header in the back of the router behind the metal heatsink
+							
+PIN 1:			Is marked by silkscreened hollow triangle
+Pin 1: 			If facing router, with ports & lights in front of you, pin 1 is on the left.
+							
+Pin							FUNCTION
+							
+1							VCC (3.3v constant)
+2							GND (continuity to DC negative)
+3							TX (3.3v high, fluctuating during transmission, dead when unpowered)
+4							RX (3.3v high, fluctuating during transmission, dead when unpowered)
+							
+							
 							#################
 							## KNOWN GPIOS ##
 							#################
-
+							
 Note: GPIO's on this device are offset by +512 - logical GPIO1 is actually GPIO513
-
+							
 Note: Working on obtaining LED & switch/phy reset GPIO's
 Note: TRENDnet does not provide GPIO mappings - failing to comply w/ GPL & provide proper CCS
-
+							
 GPIO					FUNCTION
-
+							
 48						usb-power-enable -> drive HIGH to enable USB power (finally found it via probing!)