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How to wake from sleep mode by rf, mega128rf
Hello all I am trying to figure out how the atmega128rfa1 can be awakened from sleep mode. I wish for the mega to go to a state that consumes as little power as possible (as it is...
Monday, 21 May 2012 - 05:45
Can the mcu overflow, causing it to reboot?
Hello all I am working with the atmega128rfa1 mcu and sometimes it breaks out of the while(1) loop in main and "reboots". This happens always when the timer4overflow interrupt is...
Thursday, 29 March 2012 - 09:39
Atmega128RFA1 won't enter TRX24_RX_START interrupt
Hello all I can't get the mega128rfa1 eval kit to enter the trx24_rx_start interrupt. But the trx24_rx_end and trx24_tx_end interrupts is working like they should. I can't figure...
Monday, 19 March 2012 - 11:19
Simple RF/RS232 coding scheme
Hello all I have a system with Mega128RFA1, where I sample two 10bits ADC and transfer them with RF to a second 128RFA1 that converts this to RS232 that ends in my laptop. Right...
Friday, 9 March 2012 - 17:01
Atmega128RFA1, Timer1 and CTC mode
Hello all Just to be sure, is it correct that the Timer1 in ctc mode can't generate different frequencies for the OCR1 A,B,C channels? In the datasheet under Timers, they only...
Tuesday, 28 February 2012 - 09:41
AVR ports while sleeping
Hello all I need to put my Atmega128RFA1 in sleep mode while not using it, but the chip controls several transistors that switches power to other circuits on/off... Some of these...
Monday, 20 February 2012 - 11:38
Weird ADC behaivoir
Hello all I have a weird problem with the ADC results from a atmega128rfa1. The ADC can't go lower than 50 and not higher then 861. The code I use is the following: #include #...
Friday, 6 January 2012 - 08:39
Where to start with atmel stacks
Hello I want to develop a "wireless ADC" system of two ATmega128RFa1-EK1 boards on a stk600 kit. However I am not quite sure where to begin, with the BitCloud or the MAC? As I...
Tuesday, 3 January 2012 - 18:37
Data compression on battery powered system
Hello all I am working on a battery powered dataloggin system. The setup is built around a Atmega128RFa1 and a AT25DF641 64MBIT dataflash. The system should sample two ADC...
Wednesday, 28 December 2011 - 15:07
How to calculate heart rate from arterial blood pressure
Hello guys I am trying to make a function that can calculate the heart rate from a measurement of the arterial blood pressure. Here is a picture of a possible waveform of the...
Wednesday, 4 March 2009 - 14:01
Graphic lcd and mega16 (again)
Hello freaks! I know there has been some different topics about glcd and so on, but i cant seem to find what i am looking for. I just bought a 240x128 glcd with the T6963...
Thursday, 19 February 2009 - 13:40
Log data with mega32
Hello I need to save some data within the mega32, just cant see how i can do this. the data string i need looks something like this: " 1500;498;23.3;19 " i need to send it to the...
Monday, 8 December 2008 - 18:00

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