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F_CPU at 8388608 Hz?
I've been using timer3 with the MCU clock for interrupts to run the Raven radio duty cycle. With a 1024 prescaler at 8MHz that gives about the right time precision of 128...
Thursday, 1 December 2011 - 19:09
[Solved] Raven rf230 checksum bad after jtag reset
I have this puzzling problem that just started with the rf230 radio on one of my ravens. I routinely use a jtag signature read to reboot contiki to see the startup traffic, and...
Saturday, 12 November 2011 - 19:11
ATmega128rfa1 powered through RS232 pins?
I have been using a prototype atmega128rfa1 on a protoboard, powered with 3v3 from that output of a Gabotronics XMEGA Xprotolab, but with UART1 connected to the level shifters of...
Friday, 26 August 2011 - 21:38
avr-gcc-4.5.1 using uninitialized register?
Not sure if this is a bug, known or otherwise but if so I can try to distill it to the simplest case. Identical makefile and source in both cases, Os. WinAVR gcc-4.3.3 works fine...
Saturday, 30 July 2011 - 22:42
RF23x breakout board
I am in need of a couple of RF23x breakout boards with proven antenna, so am contemplating submitting the http://www.atmel.com/dyn/resources/prod_documents/...
Wednesday, 6 July 2011 - 22:48
Getting serial output from the Studio 5 simulator
Studio 4 won't simulate the atxmega32a4 so I am giving Studio 5 a try. I had been using Hapsim for serial output but that does not work with Studio 5 (yet?). I changed the...
Tuesday, 5 July 2011 - 16:27
[6LoWPAN_CONTIKI] A RPL Border router internal to Win7
Hi all, This may be of interest to some here...additions to the contiki code has allowed a 6LoWPAN RPL mesh to be formed by a border router that runs within cygwin on the Windows...
Saturday, 2 July 2011 - 12:57
Can the RF230 radio be damaged with continous transmissions?
I've implemented a sort of sneezer mode on the RZRAVEN usb stick that puts the radio into continuous transmission, for testing CCA of other nearby radios. I'd guess it dissipates...
Monday, 21 March 2011 - 22:06
Studio5 Simulator "Writing to signature field not suppo
Trying an atmega1284p .elf file on the Studio 5 simulator, but the simulator never starts up. The .elf file simulates fine on Studio 4 (but the buggy wdt simulation resets it...
Sunday, 13 March 2011 - 22:45
Arduino article slashdotted
http://hardware.slashdot.org/story/11/02/11/1942203/Why-the-Arduino-Won-and-Why-Its-Here-To-Stay Lively discussion with 200 comments, 15 rated three or above.
Saturday, 12 February 2011 - 16:11
Preprocessor macro with embedded multiple argument define
Hacking existing RF230 SPI driver code to work with the internal ATmega128rfa1 i/o space registers, I redefined the SPI read/write routines uint8_t hal_register_read(uint8_t...
Saturday, 29 January 2011 - 22:33
Cripple Raven RF receiver?
I'm trying to set up a Raven multihop network with a 802.15.4 sniffer in the middle to capture all the traffic. I want each Raven to receive from only two others but the sniffer...
Tuesday, 23 November 2010 - 15:08