RFLink is a great, flexible and opensource RF gateway for 433Mhz devices. I use it with Domoticz. Every few months, a 
new firmware is released and they add a lot of new devices. This post describe how to update an RFLink gateway in a Linux environment.
1. Software
Install AvrDude, an Atmel AVR microcontroller programmer :
sudo apt-get install avrdude
2. Update
1 – Plug the gateway (the Arduino Mega board) to your computer using an USB cable.
2 – Check the port :
dmesg
The output should give you something like
=
[ 2135.966103] usb 2-1.1: USB disconnect, device number 4
[ 2137.722793] usb 2-1.1: new full-speed USB device number 5 using ehci-pci
[ 2137.835663] usb 2-1.1: New USB device found, idVendor=2341, idProduct=0042
[ 2137.835667] usb 2-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=220
[ 2137.835670] usb 2-1.1: Manufacturer: Arduino (www.arduino.cc)
[ 2137.835672] usb 2-1.1: SerialNumber: 95431353438351916190
[ 2137.836212] cdc_acm 2-1.1:1.0: ttyACM0: USB ACM device
3 – Download and unzip the firmware from http://www.rflink.nl/blog2/download
4 – In the same folder than the extracted firmware, run the following command :
sudo avrdude -v -p atmega2560 -c stk500 -P /dev/ttyACM0 -b 115200 -D -U flash:w:RFLink.cpp.hex:i
The output should looks like this:
avrdude: Version 6.3
Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
Copyright (c) 2007-2014 Joerg Wunsch
System wide configuration file is "/etc/avrdude.conf"
User configuration file is "/home/ron/.avrduderc"
User configuration file does not exist or is not a regular file, skipping
Using Port : /dev/ttyACM0
Using Programmer : stk500
Overriding Baud Rate : 115200
AVR Part : ATmega2560
Chip Erase delay : 9000 us
PAGEL : PD7
BS2 : PA0
RESET disposition : dedicated
RETRY pulse : SCK
serial program mode : yes
parallel program mode : yes
Timeout : 200
StabDelay : 100
CmdexeDelay : 25
SyncLoops : 32
ByteDelay : 0
PollIndex : 3
PollValue : 0x53
Memory Detail :
Block Poll Page Polled
Memory Type Mode Delay Size Indx Paged Size Size #Pages MinW MaxW ReadBack
----------- ---- ----- ----- ---- ------ ------ ---- ------ ----- ----- ---------
eeprom 65 10 8 0 no 4096 8 0 9000 9000 0x00 0x00
flash 65 10 256 0 yes 262144 256 1024 4500 4500 0x00 0x00
lfuse 0 0 0 0 no 1 0 0 9000 9000 0x00 0x00
hfuse 0 0 0 0 no 1 0 0 9000 9000 0x00 0x00
efuse 0 0 0 0 no 1 0 0 9000 9000 0x00 0x00
lock 0 0 0 0 no 1 0 0 9000 9000 0x00 0x00
calibration 0 0 0 0 no 1 0 0 0 0 0x00 0x00
signature 0 0 0 0 no 3 0 0 0 0 0x00 0x00
Programmer Type : STK500V2
Description : Atmel STK500
Programmer Model: AVRISP
Hardware Version: 15
Firmware Version Master : 2.10
Vtarget : 0.0 V
SCK period : 0.1 us
avrdude: AVR device initialized and ready to accept instructions
Reading | ################################################## | 100% 0.01s
avrdude: Device signature = 0x1e9801 (probably m2560)
avrdude: safemode: hfuse reads as D8
avrdude: safemode: efuse reads as FD
avrdude: reading input file "RFLink.cpp.hex"
avrdude: writing flash (194060 bytes):
Writing | ################################################## | 100% 31.10s
avrdude: 194060 bytes of flash written
avrdude: verifying flash memory against RFLink.cpp.hex:
avrdude: load data flash data from input file RFLink.cpp.hex:
avrdude: input file RFLink.cpp.hex contains 194060 bytes
avrdude: reading on-chip flash data:
Reading | ################################################## | 100% 24.88s
avrdude: verifying ...
avrdude: 194060 bytes of flash verified
avrdude: safemode: hfuse reads as D8
avrdude: safemode: efuse reads as FD
avrdude: safemode: Fuses OK (E:FD, H:D8, L:FF)
avrdude done. Thank you.
You’re done, happy home automation 🙂
thanks for sharing