From d2853848057e708ac8c5d824f87020bfa3d8ae69 Mon Sep 17 00:00:00 2001
From: cpldcpu <cpldcpu@gmail.com>
Date: Wed, 9 Oct 2013 08:41:20 +0200
Subject: tiny85FlashInit(); only checks on byte now

20 bytes less
---
 firmware/main.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

(limited to 'firmware')

diff --git a/firmware/main.c b/firmware/main.c
index c24e8be..d0c7722 100644
--- a/firmware/main.c
+++ b/firmware/main.c
@@ -345,12 +345,9 @@ static inline void tiny85FlashInit(void) {
     // check for erased first page (no bootloader interrupt vectors), add vectors if missing
     // this needs to happen for usb communication to work later - essential to first run after bootloader
     // being installed
-    if(pgm_read_word(RESET_VECTOR_OFFSET * 2) != 0xC000 + (BOOTLOADER_ADDRESS/2) - 1 ||
-            pgm_read_word(USBPLUS_VECTOR_OFFSET * 2) != 0xC000 + (BOOTLOADER_ADDRESS/2) - 1) {
-
-        fillFlashWithVectors();
-    }
 
+    if(pgm_read_byte(RESET_VECTOR_OFFSET * 2+1) == 0xff) fillFlashWithVectors();   // write vectors if flash is empty
+    
     // TODO: necessary to reset currentAddress?
     currentAddress = 0;
 }
-- 
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