From 9b879df55d481b64a6574d5f1b2c901925d630b0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ond=C5=99ej=20Hru=C5=A1ka?= <ondra@ondrovo.com>
Date: Thu, 15 Dec 2022 22:21:24 +0100
Subject: [PATCH] add files

---
 46-avr.rules           | 11 +++++++++++
 README.md              | 16 ++++++++++++++++
 burn.sh                | 18 ++++++++++++++++++
 optiboot_atmega328.hex | 33 +++++++++++++++++++++++++++++++++
 4 files changed, 78 insertions(+)
 create mode 100644 46-avr.rules
 create mode 100644 README.md
 create mode 100755 burn.sh
 create mode 100644 optiboot_atmega328.hex

diff --git a/46-avr.rules b/46-avr.rules
new file mode 100644
index 0000000..8bc5df0
--- /dev/null
+++ b/46-avr.rules
@@ -0,0 +1,11 @@
+# udev rules file for ATMEL AVR isp
+#
+ACTION!="add|change", GOTO="avrisp_rules_end"
+SUBSYSTEM!="usb|usb_device", GOTO="avrisp_rules_end"
+
+# AVR Dragon v1
+ATTRS{idVendor}=="03eb", ATTRS{idProduct}=="2104", MODE="0660", GROUP="plugdev"
+# AVR Dragon v2 (the one without shitty voltage regulators)
+ATTRS{idVendor}=="03eb", ATTRS{idProduct}=="2107", MODE="0660", GROUP="plugdev"
+
+LABEL="avrisp_rules_end"
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..7c60843
--- /dev/null
+++ b/README.md
@@ -0,0 +1,16 @@
+# Rescue script for atmega328P
+
+This script sets fuses and installs Optiboot using AVR Dragon.
+
+The file "46-avr.rules" contains the necessary rules to make AVR Dragon work without sudo.
+
+## Usage
+
+Run `./burn.sh`
+
+
+## Sources:
+
+46-avr.rules ... https://gist.github.com/TobleMiner/7507b0571e9151dffaa638628601fdd9
+Optiboot ... Optiboot-8.0.zip from https://github.com/Optiboot/optiboot/releases/tag/v8.0
+
diff --git a/burn.sh b/burn.sh
new file mode 100755
index 0000000..d8fa5e8
--- /dev/null
+++ b/burn.sh
@@ -0,0 +1,18 @@
+#!/bin/bash
+
+set -e
+
+# Settings:
+# LFUSE: no ckdiv, no ckout, maximum settle time, external 8MHz crystal
+# HFUSE: smallest bootloader (optiboot uses 512B = 256W), bootloader enabled
+# EFUSE: Brown-out level set to 1.8V
+# LOCK:  disable bootloader overwrite from app section
+
+avrdude -p m328p -c dragon_isp \
+    -U lfuse:w:0xff:m \
+    -U hfuse:w:0xde:m \
+    -U efuse:w:0xfe:m \
+    -U lock:w:0xef:m \
+    -U flash:w:optiboot_atmega328.hex
+
+echo "Done."
diff --git a/optiboot_atmega328.hex b/optiboot_atmega328.hex
new file mode 100644
index 0000000..6be487c
--- /dev/null
+++ b/optiboot_atmega328.hex
@@ -0,0 +1,33 @@
+:107E000001C0DCC0112484B7882361F0982F9A70D8
+:107E1000923041F081FF02C097EF94BF282E80E09E
+:107E2000B8D0EEC085E08093810082E08093C000EE
+:107E300088E18093C10086E08093C20080E1809356
+:107E4000C4008EE0A6D0259A86E020E33CEF91E0C6
+:107E5000309385002093840096BBB09BFECF1D9A83
+:107E6000A8954091C00047FD02C0815089F7EE24DB
+:107E7000E39495E0D92E21E1C22E7FD0813461F4C4
+:107E80007CD0182F8CD01238E9F0113811F488E02A
+:107E900001C083E06BD067C0823411F484E103C079
+:107EA000853419F485E083D05EC0853539F465D01A
+:107EB000C82F63D0D82FCC0FDD1F54C0863521F4D6
+:107EC00084E075D080E0E6CF843609F02EC055D02E
+:107ED00054D0F82E52D0B82E00E011E04ED0F80168
+:107EE00081938F01FE12FACF5AD0F5E4BF1201C080
+:107EF000FFCF83E0FE0187BFE89507B600FCFDCF0A
+:107F0000A0E0B1E0FE018D919D910C01E7BEE895E6
+:107F100011243296FA12F7CFFE01D7BEE89507B6C4
+:107F200000FCFDCFC7BEE8951EC0843771F425D094
+:107F300024D0F82E22D033D08E01F80185918F0104
+:107F400015D0FA94F110F9CF0EC0853739F427D047
+:107F50008EE10CD085E90AD08FE09CCF813511F4F9
+:107F600088E017D01CD080E101D087CF9091C0006D
+:107F700095FFFCCF8093C60008958091C00087FFD5
+:107F8000FCCF8091C00084FD01C0A8958091C600FF
+:107F90000895E0E6F0E098E1908380830895EDDFB6
+:107FA000803219F088E0F5DFFFCF84E1DFCFCF9397
+:107FB000C82FE3DFC150E9F7CF91F1CFFC010A01EF
+:107FC00067BFE895112407B600FCFDCF667029F065
+:0C7FD000452B19F481E187BFE895089566
+:027FFE00000879
+:0400000300007E007B
+:00000001FF