4.4 KiB
Getting Started with OSD-Contiki using osd-merkur-256 merkurboard
This guide's aim is to help you start using Contiki for merkurboards The platform supports different AtMega-RF boards:
- Based on MCU AtMega256RFR2
- Based on MCU AtMega128RFA1
Boards all looks the same. AtMega256RFR2 boards are labeled with "deRFmega256".
The platform and CPU code, are common for both boards, can be found under
$(CONTIKI)/platfrom/osd-merkur-256,
$(CONTIKI)/platfrom/osd-merkur-128
The port was developed and tested with Merkurboard.
This guide assumes that you have basic understanding of how to use the
command line and perform basic admin tasks on UNIX family OSs. You should
also have understanding about the Contiki OS design as well have C
programming skills.
OSD-Contiki Features
- Contiki Features
- Arduino compatible
- use Arduino Libs in your Project (see ../examples/osd/arduino-* )
- store rf parameter at eeprom
- OTA-Features (Update over the Air)
Board Features
- wire Antenna.
- Robust radio performance. Up to 300 meter line-of-sight.
- Unique EUI64 address via Bootloader
- 32kHz RTC xtal
- Standard. 6-pin TTL-USB header for FTDI cable for UART.
- PCB formfactor for cheap project breadboard
- Power/current:
- RX ~10mA (Full RPC AtMegaXXRFR2).
- Sleep ~45uA @ 16MHz XTAL
- Sleep ~15uA @ 8MHz using internal oscillator
- Preprogammed arduino bootloader with update over the Air support.
- CE certified by test institute.
UART
The board has one UART via the 6-pin TTL-USB adapter, The recommended baudrate is 38400 bps. This speed gives the lowest error with respect of the used clock frequency used internally. A possible hi-speed is 250000 bps wich gives 0% Error with 16MHz clock.
Port Features
The platform has the following key features:
- Standard, E64 address from built-in chip.
- First hooks for RPC (Reduced Power Consumption) for AtMegaXXXRFR2.
Toolchain needs
The Atmel toolcahin is available in most operating system. Note. We use Debian 9 as reference Linux
For Linux
sudo apt-get install avr-libc binutils-avr gcc-avr gdb-avr simulavr avrdude make git
sudo apt-get install python-pip
pip install intelhex
sudo apt-get install picocom libcoap-1-0-bin
For Windows
Goes here // todo
get the source code:
git clone https://github.com/osdomotics/osd-contiki.git cd osd-contiki git submodule update --init --recursive
Contiki build TARGET
For AtMega128RFR2 boards:
make TARGET=osd-merkur-256
For AtMega128RFA1 boards:
make TARGET=osd-merkur-128
Flashing
Programming using avrdude using serial bootloader. (TTL-USB cable)
Flashing commnad line example 256k MCU:
make TARGET=osd-merkur-256 flash
Flashing commnad line example 128k MCU:
make TARGET=osd-merkur-128 flash
Tested applications and examples
see osd-contiki/example/osd/..
Platform tutorial applications
todo ...
Regressions tests
Travis compile regression test for the platform: regression-tests/20-compile-osd-ports.
This port adds newer version of avr-gcc compiler (4.9.2), to support
testing of newer Atmel MCU as Atmega256RFR2.
Board approvals
Summary:
- R&TTE 73/23/EEC, 89/336/EEC and 99/5/EC
- Safety: EN 60950-1:2006 + A12: 2011
- RF: ETSI EN 300 328 V1.7.1 (2006-10)
- EMC: ETSI EN 301 489-1 V1.9.2 (2011-09), ETSI EN 301 489-17 V2.2.1 (2012-09)
- EMF: EN 62479:2010
- Human exposure to electromagnetic fields: EN 62479:2010
Commercial availability
Through vendor and though resellers. Note board is will only available were CE approval is covered. This may be further restricted by WEEE. Contact vendor. For research legislation is more relaxed in most countries.
References
AtMega64/128/256/RFR2 chip documentation available via Atmel. Schematics and boards description. Available via Radio-Senors Smart Reduced Power Consumption Techniques. AT02594 available via Atmel.
ToDo
API for radio power saving settings introduced Atmels app note AT02594. Also function for the desensitizing RPC resister.
Vendor info
http://wiki.osdomotics.com http://iot-shop.at/
Maintainer
Harald Pichler harald@the-develop.net