From 16acb64b783f30f6baabb44cc1e5b03298451a36 Mon Sep 17 00:00:00 2001
From: Eirik Stople <eirik@pcfood.net>
Date: Sun, 26 May 2024 22:32:51 +0200
Subject: [PATCH] Disable PS2 reception when power supply is off (maybe not
 necessary)

This was added as I saw some strange incomming bytes when doing ctrl-alt-
delete. They were gone after this and the previous change, not sure which
commit fixed the problem.
---
 ps2.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/ps2.h b/ps2.h
index fa5800a..08afc8f 100644
--- a/ps2.h
+++ b/ps2.h
@@ -438,6 +438,10 @@ class PS2KeyboardPort : public PS2Port<clkPin, datPin, size>
        Processes a scan code byte received from the keyboard
     */
     void processByteReceived(uint8_t value) {
+
+      // Power off: Do not add anything to buffer
+      if (PWR_ON_active() == false) return;
+
       // Handle BAT success (0xaa) or fail (0xfc) code
       if (!keyboardIsReady() && (value == 0xaa || value == 0xfc)) {
         bat = value;