From 50b724dabcc7a50d33b8101fe1cb9d8d03768568 Mon Sep 17 00:00:00 2001
From: Seth <sethsml@hotmail.com>
Date: Fri, 25 Oct 2024 00:05:34 +1300
Subject: [PATCH] screen dims when searching for gps signal

---
 GPSSpeedMultiCore.ino | 26 ++++++++++++++++++--------
 1 file changed, 18 insertions(+), 8 deletions(-)

diff --git a/GPSSpeedMultiCore.ino b/GPSSpeedMultiCore.ino
index bdc59b6..1391af4 100644
--- a/GPSSpeedMultiCore.ino
+++ b/GPSSpeedMultiCore.ino
@@ -29,7 +29,8 @@ unsigned long timeOfLastFix = 0UL;
 
 //button
 volatile bool buttonPushed = false;
-volatile int screenBrightness = 15;
+volatile int screenBrightnessButton = 15;
+volatile int screenBrightnessCurrent = screenBrightnessButton;
 volatile unsigned long lastButtonPush = 0UL;
 
 void chageBrightness() {
@@ -67,7 +68,7 @@ void setup() {
   Wire.setSDA(16);
   //Wire.setClock(100000);
   disp.begin(DISPLAY_ADDRESS);
-  disp.setBrightness(screenBrightness);
+  disp.setBrightness(screenBrightnessButton);
   disp.clear();
   disp.writeDigitAscii(0, 71);  //"G"
   disp.writeDigitAscii(1, 80);  //"P"
@@ -92,19 +93,24 @@ void loop() {
 
   //change brightness
   if (buttonPushed == true) {
-    if (screenBrightness == 15) {
-      screenBrightness = MIDDLE_SCREEN_BRIGHTNESS;
-    } else if (screenBrightness == MIDDLE_SCREEN_BRIGHTNESS) {
-      screenBrightness = 0;
+    if (screenBrightnessButton == 15) {
+      screenBrightnessButton = MIDDLE_SCREEN_BRIGHTNESS;
+    } else if (screenBrightnessButton == MIDDLE_SCREEN_BRIGHTNESS) {
+      screenBrightnessButton = 0;
     } else {
-      screenBrightness = 15;
+      screenBrightnessButton = 15;
     }
-    disp.setBrightness(screenBrightness);
+    disp.setBrightness(screenBrightnessButton);
+    screenBrightnessCurrent=screenBrightnessButton;
     buttonPushed = false;
   }
 
   disp.clear();
   if (gpsFixType.load() > 0) {
+    if (screenBrightnessCurrent != screenBrightnessButton){
+      disp.setBrightness(screenBrightnessButton);
+      screenBrightnessCurrent=screenBrightnessButton;
+    }
     timeOfLastFix = millis();  //reset no gps screen display
     int temp = speed.load() * 10;
     //int temp = rand();
@@ -122,6 +128,10 @@ void loop() {
     disp.writeDigitAscii(2, 48 + digit2, true);
     disp.writeDigitAscii(3, 48 + digit3);
   } else {
+    if (screenBrightnessCurrent!=0){
+      disp.setBrightness(0);
+      screenBrightnessCurrent=0;
+    }
     unsigned long currentTime = millis();
     unsigned long timeSinceLastFIx = timeOfLastFix - currentTime;
     int flashStage = timeSinceLastFIx % 3000;