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104 lines
3.7 KiB
Plaintext
104 lines
3.7 KiB
Plaintext
/**
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@defgroup boards_avr-rss2 Atmega256RFR2 rss2
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@ingroup boards
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@brief Support for the Radio Sensors Atmega256RFR2 rss2 board
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### General information
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Document version V1.4 2019-11-10<br>
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Board is based AtMega256RFR2 with additional HW, EUI64 chip, HW comparator, RTC XTAL, BME280
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- Directory `$(RIOTBASE)/boards/avr-rss2'
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### Board Features
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- PCB Antenna. Supercardiod
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- Robust radio performance. Up to 300 meter line-of-sight
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- Unique EUI64 address via 24MAC602 chip with 2k EEPROM
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- Rev 2.4 Onboard BME280 for Temp/RH/Pressure
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- Light Sensor
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- 32kHz RTC clock xtal
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- HW comparator chip and input
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- Programmable power FET, (relay) for power on/off of sensors
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- Up to 25V DC input via LDO (LP2950). TVS protected
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- Standard. 6-pin TTL-USB header compatible w. FTDI cable for USART
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- PCB formfactor for cheap project box G.40X IP54
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- Power/current use:
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*- RX ~10mA (Full RPC AtMegaXXRFR2)
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*- Sleep ~45uA @ 16MHz XTAL
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*- Sleep ~15uA @ 8MHz using internal oscillator
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- Preprogammed Atmel standard stk500v2 bootloader
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- CE certified by test institute
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### USART
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The board has one USART via the 6-pin TTL-USB adapter, The default
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baudrate is 115200 bps. It's possible to use higher speeds as is 250k
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and 500k baud which gives 0% Error with 16MHz clock.
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(An additional USART is on the chip but as default used by interrupt
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pins. Needs HW mod to be used)
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### Toolchain
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The Atmel toolchain is available in most operating systems.
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For a full toolchain and easy installation on Ubuntu:
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```
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apt-get install gcc-avr avr-libc avrdude
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```
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Otherwise if OS toolchain packages do not support the AtMega256RfR2
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MCU, another option is to download the C compiler toolchain from Microchip.
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### For Linux and MacOS
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1. Download the proper 8-bit C compiler AVR toolchain, 32 or 64-bit, [from Microchip](https://www.microchip.com/mplab/avr-support/avr-and-arm-toolchains-c-compilers).
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2. Unpack under `/usr/local`
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3. Add to your search PATH. For example add to `.bashrc`:
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```
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export PATH=$PATH:/usr/local/avr8-gnu-toolchain-linux_x86_64/bin (64-bit)
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export PATH=$PATH:/usr/local/avr8-gnu-toolchain-linux_x86/bin (32-bit)
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```
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4. For flash programming, you need `avrdude`. On Ubuntu Linux, it can be installed with the command
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```
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apt-get install avrdude
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```
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For MacOS, there is a [HomeBrewpackage](https://formulae.brew.sh/formula/avrdude#default)
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that can be installed with the command:
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```
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brew install avrdude
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```
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### RIOT build
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```
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make BOARD=avr-rss2
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```
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### Flashing/Programming hardware
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Programming using avrdude using serial bootloader using a TTL-USB cable.
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Press the RESET button. The bootloader with wait for boot commands for 3 seconds. Program with:
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```
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avrdude -p m256rfr2 -c stk500v2 -P /dev/ttyUSB0 -b 115200 -e -U flash:w:bin/rss2-mega256rfr2/hello-world.elf
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```
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### Board approvals
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Summary: CE approved Radio Equipment Directive (RED) 2014/53/EU
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Rev 2.4
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- Safety: IEC 60950-1:2005 2nd Edition +Am 1:2009 +Am 2:2013
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- RF: ETSI EN 300 328 V2.1.1 (2016-11)
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- EMC: Draft ETSI EN 301 489-1 V2.2.0 (2017-03),Draft ETSI EN 301 489-17 V3.2.0 (2017-03)
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- EMF: EN 62479:2010
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- Human exposure to electromagnetic fields: EN 62479:2010
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### Commercial availability
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Through vendor and though resellers. Note board is will only available
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were CE approval is covered. This may be further restricted by WEEE.
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Contact vendor. For research legislation is more relaxed in most countries.
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### References
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- AtMega64/128/256/RFR2 chip documentation available via Atmel.
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- Smart Reduced Power Consumption Techniques. AT02594 available via Atmel.
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- Board documentation, schematics, CE and vendor via http://radio-sensors.com/
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### Board (Rev2.4) anatomy with connectors
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- http://radio-sensors.com/pictures/s2-2.4-front-edited.jpg
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- http://radio-sensors.com/pictures/s2-2.4-back-port-edited.jpg
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*/
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