From c9c126b707693ff6d3670a1fa99a77b0e09f82f6 Mon Sep 17 00:00:00 2001
From: Eugene Crosser <crosser@average.org>
Date: Thu, 25 Jul 2024 20:08:24 +0200
Subject: [PATCH] Fix "old values" pointing to wrong cells

---
 ThermoBeaconDisplay.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/ThermoBeaconDisplay.cpp b/ThermoBeaconDisplay.cpp
index 6b0230a..cee308b 100644
--- a/ThermoBeaconDisplay.cpp
+++ b/ThermoBeaconDisplay.cpp
@@ -166,15 +166,15 @@ void dispel(int oldv, int newv, int xpos, int yf, int yt, int colour) {
     tft.setViewport(xpos * (tft.width() / 2) + 10, yf + 2,
 		    tft.width() / 2 - 12, yt - 4);
     tft.setTextSize(2);
-/*
     if (oldv) {
 	tft.setCursor(0, 0, 4);
         tft.setTextColor(TFT_BLACK);
         tft.print(oldv / 10);
         tft.print(".");
         tft.print(oldv % 10);
+    } else {
+        tft.fillScreen(TFT_BLACK);
     }
-*/
     if (newv) {
         tft.fillScreen(TFT_BLACK);  // TODO: must not have this. Need debugging
 	tft.setCursor(0, 0, 4);
-- 
2.43.0