From 523153fcf0ea0e7b56be2539d6067b660dd7586b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?King=20K=C3=A9vin?= <kingkevin@cuvoodoo.info>
Date: Tue, 17 Aug 2021 08:56:33 +0200
Subject: [PATCH] main: reload EEPROM EDID when read+save failed

---
 main.c | 19 ++++++++++++++++++-
 1 file changed, 18 insertions(+), 1 deletion(-)

diff --git a/main.c b/main.c
index 9a26eaf..10d28af 100644
--- a/main.c
+++ b/main.c
@@ -339,7 +339,24 @@ void main(void)
 						if (edid_valid) { // read EDID is valid
 							puts("I²C EDID valid\r\n");
 							IWDG_KR = IWDG_KR_KEY_REFRESH; // reset watchdog
-							led_error = !save_edid(); // save to EEPROM
+
+/*
+							puts("EDID data:\r\n");
+							for (uint16_t i = 0; i < ARRAY_LENGTH(edid); i++) {
+								puth(edid[i]);
+								putc(' ');
+							}
+							puts("\r\n");
+*/
+
+							if (save_edid()) {; // save to EEPROM
+								puts("I²C EDID saved to EEPROM\r\n");
+							} else {
+								led_error = true; // indicate write error
+								puts("could not save EDID to EEPROM\r\n");
+								load_edid(); // re-load EDID from EEPROM
+								edid_valid = (0 != edid_length()); // verify if EDID is valid
+							}
 							IWDG_KR = IWDG_KR_KEY_REFRESH; // reset watchdog
 						} else { // read EDID is not valid
 							puts("I²C EDID not valid, reloading from EEPROM\r\n");