Tagged Questions

0
votes
1answer
59 views

Single FET Bus Switch schematic in EAGLE

I've added a SN74CBT1G384DBV into my schematic in Eagle (which I want to use to enable/disable a logic signal line). Once placed into the schematic there only appear to be connection points for VCC ...
1
vote
1answer
158 views

Multiple masters for i2c device

I have a DS1307 RTC chip that I want to interface with multiple masters. One, an ATMega chip, will only ever really need to pull time data from the chip and the other (probably just an ATTiny) will ...
6
votes
2answers
1k views

Need help understanding AVR ATMEGA / ATTINY timer mirrored output

I am trying to use Timer1 of Atmel AVR microcontroller, either AtMega328 as used in the Arduino, or the ATTiny85, to output two clock signals which are mirror images of each other. The frequency I am ...
7
votes
1answer
428 views

Can an ATmega or ATtiny device signature be read while running?

While programming an ATtiny or ATmega, avrdude prints the device signature, in this example it is an ATtiny. avrdude: Device signature = 0x1e910a Can I read this ...
3
votes
2answers
222 views

Append source code to flash image when programming an AVR

Is it possible for Arduino / ATmega / ATtiny when programming the device to attach the C source code at the end the machine code flash image? That way if I have the device, I can always retrieve the ...
2
votes
1answer
697 views

Backup AVR with avrdude

I'm heavily experimenting with ATtiny AVR's and I can't afford to buy a new AVR for every experiment, so I thought up a backup script. The idea is that I can bring my AVR back to factory defaults ...