From 9e35864548fbaa4db9631b913b385be8f3c8bc6d Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?King=20K=C3=A9vin?= Date: Fri, 19 Aug 2022 16:10:52 +0200 Subject: [PATCH] =?UTF-8?q?doc:=20add=20EDID=20I=C2=B2C=20programming?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- README.md | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/README.md b/README.md index d754e0c..4866140 100644 --- a/README.md +++ b/README.md @@ -17,6 +17,11 @@ if the ERROR LED is on, the possible cause is one of the following: - tried reading the EDID from the monitor, but it is not connected - communication with monitor failed, due to damaged cable - monitor EDID is invalid +- storing EDID in EEPROM failed + +the firewall only acts as an I²C EEPROM at address 0x50 toward the HDMI device to provide the EDID information. +if the EDID switch is on the BLOCK position, the EEPROM is read only. +if the EDID switch is on the ALLOW position, writing the EEPROM is possible over the HDMI connection using standard I²C write operations. limitations ===========