From 7274a6cc7055f9fed72a83c065781af4293e8462 Mon Sep 17 00:00:00 2001
From: Mark Qvist <mark@unsigned.io>
Date: Wed, 3 May 2023 14:05:49 +0200
Subject: [PATCH] Persist display intensity to EEPROM

---
 Display.h          | 2 ++
 RNode_Firmware.ino | 5 +++++
 ROM.h              | 2 ++
 Utilities.h        | 4 ++++
 4 files changed, 13 insertions(+)

diff --git a/Display.h b/Display.h
index f0ba7de..5b3e356 100644
--- a/Display.h
+++ b/Display.h
@@ -134,6 +134,8 @@ bool display_init() {
       disp_area.cp437(true);
       display.cp437(true);
 
+      display_intensity = EEPROM.read(eeprom_addr(ADDR_CONF_DINT));
+
       return true;
     }
   #else
diff --git a/RNode_Firmware.ino b/RNode_Firmware.ino
index b48e4c3..e12121e 100644
--- a/RNode_Firmware.ino
+++ b/RNode_Firmware.ino
@@ -117,6 +117,10 @@ void setup() {
   #endif
 
   #if HAS_DISPLAY
+    if (EEPROM.read(eeprom_addr(ADDR_CONF_DSET)) != CONF_OK_BYTE) {
+      eeprom_update(eeprom_addr(ADDR_CONF_DSET), CONF_OK_BYTE);
+      eeprom_update(eeprom_addr(ADDR_CONF_DINT), 0xFF);
+    }
     disp_ready = display_init();
     update_display();
   #endif
@@ -798,6 +802,7 @@ void serialCallback(uint8_t sbyte) {
                 ESCAPE = false;
             }
             display_intensity = sbyte;
+            di_conf_save(display_intensity);
         }
 
       #endif
diff --git a/ROM.h b/ROM.h
index 6ea5686..611c88b 100644
--- a/ROM.h
+++ b/ROM.h
@@ -58,6 +58,8 @@
 	#define ADDR_CONF_OK   0xA7
 	
 	#define ADDR_CONF_BT   0xB0
+	#define ADDR_CONF_DSET 0xB1
+	#define ADDR_CONF_DINT 0xB2
 
 	#define INFO_LOCK_BYTE 0x73
 	#define CONF_OK_BYTE   0x73
diff --git a/Utilities.h b/Utilities.h
index 56b870d..fcef508 100644
--- a/Utilities.h
+++ b/Utilities.h
@@ -1096,6 +1096,10 @@ void bt_conf_save(bool is_enabled) {
 	}
 }
 
+void di_conf_save(uint8_t dint) {
+	eeprom_update(eeprom_addr(ADDR_CONF_DINT), dint);
+}
+
 bool eeprom_have_conf() {
 	if (EEPROM.read(eeprom_addr(ADDR_CONF_OK)) == CONF_OK_BYTE) {
 		return true;