From ea3f98ea7a8edca201780aac5305f45e1fd81b75 Mon Sep 17 00:00:00 2001
From: Sadeep Madurange <sadeep@asciimx.com>
Date: Sun, 15 Sep 2024 15:11:59 +0800
Subject: Readme.

---
 README.txt | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/README.txt b/README.txt
index faa5291..928e0b5 100644
--- a/README.txt
+++ b/README.txt
@@ -1,5 +1,12 @@
-Compile and upload
+Set GPNVM bits to boot from flash0:
+
+# openocd -f openocd-due.cfg
+$ telnet localhost 4444
+  > halt
+  > at91sam3 gpnvm set 1
+  > at91sam3 gpnvm show
+
+Compile and flash
 
 $ arm-none-eabi-gcc -mcpu=cortex-m3 -mthumb -T script.ld -nostartfiles -nostdlib -o a.elf main.c
-$ arm-none-eabi-objcopy -O ihex -j .text -j .data a.elf a.hex
-$ avrdude -c arduino -p atmel_sam3x8e -v -b 115200 -U flash:w:a.hex
+# openocd -f openocd-due.cfg -c "program a.elf verify reset exit"
-- 
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