All Questions
14
questions
2
votes
2
answers
527
views
How to store the last counting value in EEPROM in ATmega8 after power failure
I written a program to store the last counting value according to ATmega8 datasheet. but it didn't save the last value. The counter variable went to zero after power failure.
Please check the ...
- 21
0
votes
0
answers
94
views
EEPROM chip always toggling bit when reading
I have a parallel EEPROM, the AT29C020 (doc: http://pdf.datasheetcatalog.com/datasheet/atmel/DOC0291.PDF)
In order to read it I'm using an ATMega8535 as it has enough pins.
At first I thought reading ...
1
vote
2
answers
93
views
Brown-out detection with an external clock ATmega1280
I'm using ATmega1280 with an external clock and I have some questions about the "safe operating area" for preventing EEPROM corruption with BOD.
The external clock is: Crystals 14.7456MHz ...
0
votes
0
answers
366
views
Microcontroller(Atmega16A) hangs in Stop method while communicating using I2C with Atmega16 and 24LC256
First of all let me say that I am a beginner in embedded programming.
I am trying to do write/read using I2C protocol from 24LC256 EEPROM using Atmega16A.
While debugging in Atmel Studio 7, I see I ...
- 101
0
votes
1
answer
664
views
How to connect multiple AT28C256/AT93C256/AT24C256/24LC512 EEPROMS to have more space
I want to have more memory say 1 Mega Byte, But I don't know how to connect multiple EEPROMS either in series or parallel
I would like to use either AT28.... or AT93.... or AT24.... series
Also ...
- 101
0
votes
1
answer
2k
views
What is needed to store readable/writable data to flash/eeprom [closed]
I am wanting to add some readable/writeable memory to my ATmega8/attiny project where I can store data, recall the stored data, then overwrite the stored data. The stored data must be able to be ...
- 189
0
votes
2
answers
3k
views
Primary diff between EEPROM and Flash mem, in terms of code memory
In terms of storing program commands, what is the definable difference between EEPROM and Flash memory?
Also, in this particular context -
For a personal project developing audio codec using TI ...
- 97
1
vote
4
answers
1k
views
ATmega328p and USB conection to PC
I posted the same question on StackOverflow and I was redirected here.
For my project I need to be able to program the eeprom of an Atmega 328p via an USB to PC. I tried to incorporate an USBasp ...
- 11
7
votes
5
answers
2k
views
EEPROM endurance in energy meter?
I am designing an energy meter for electricity billing purposes by converting an analogue energy meter and counting the number of pulses given by the analogue meter's LED. Since power may be cut off ...
4
votes
3
answers
1k
views
I need to lock reading my mega328 flash but be able to write to the eeprom
I need to be able to prevent other from copying my program placed in the flash, but want to still be able to write to the EEPROM.
I tried the lock bits by setting them to Mode 3 (0x3C). But that will ...
- 41
5
votes
3
answers
7k
views
Minimum voltage to avoid EEPROM corruption for ATMega328P
I have a battery powered contraption with an ATMega328P with Arduino code that sleeps most of the time. Occasionally it needs to write some values to EEPROM. It's battery powered so I have tried to ...
- 193
4
votes
3
answers
4k
views
the . hex file we burn goes to flash memory or RAM or EEPROM of Atmega8?
The flash memory of atmega8 is 8Kb.
Is this the maximum size for the .hex file, or it the max memory which i can allocate to variables in my code?
If none of the above is true, than what is memory ...
- 115
1
vote
1
answer
3k
views
Pointer Size using eeprom.h with ATmega328p in AVR-GCC
I am working on a project that randomly reads and writes large blocks of data from EEPROM, based on user input. I have used the EEPROM before, but I never really thought about this. In the operations ...
- 4,449
0
votes
1
answer
273
views
Ardupilot, atmega1280 and barometer
I'm working on a project and I need to know where the information taken by the barometer sensor are stored.
I think in the eeprom, but exactly where? Is there a specific address or register memory?
...
- 415