Problem with firmware getting erased by random!!!

[Synthex]

There is no delay. I've posted the source code for the Bootloader and you're welcome to look at it. I can put the delay at the beginning but how are you going to write the new bootloader into Atmega?

Add a delay is a good thing.

[dmitri]

Try to pull pin 8 of Atmega to +5 over a 10k-100k resistor. Does it make a difference?

What is the period of pressure on a button to be taken into account by the Atmega (for the bootloader and the firmware) ?

It doesn't work like this. The very first change in the button position is registered and after that, to avoid false signals due to contact noise, any further changes are ignored for a short period of time.

[dmitri]

There is no delay. I've posted the source code for the Bootloader and you're welcome to look at it. I can put the delay at the beginning but how are you going to write the new bootloader into Atmega?

Add a delay is a good thing.

Delay is set by a proper fuse programming.

[slayer666]

I can put the delay at the beginning but how are you going to write the new bootloader into Atmega?

A friend of mine can do it for me.

[dmitri]

1. Did putting 47k resistor fix the issue or it didn't?
2. Start up delay is controlled by fuses settings. By the time the bootloader code starts all voltages should settle down.
3. I can put a delay but not right now since I don't yet have a laptop replacement. My old one died, see "Off Topic" forum. If you're eager, you can compile the bootloader yourself, I've published the source code.

[slayer666]

1. Did putting 47k resistor fix the issue or it didn't?
2. Start up delay is controlled by fuses settings. By the time the bootloader code starts all voltages should settle down.
3. I can put a delay but not right now since I don't yet have a laptop replacement. My old one died, see "Off Topic" forum. If you're eager, you can compile the bootloader yourself, I've published the source code.

1. Yes it did.
2. ok
3. God made me a retard when it comes to programming...

[dmitri]

1. Did putting 47k resistor fix the issue or it didn't?
2. Start up delay is controlled by fuses settings. By the time the bootloader code starts all voltages should settle down.
3. I can put a delay but not right now since I don't yet have a laptop replacement. My old one died, see "Off Topic" forum. If you're eager, you can compile the bootloader yourself, I've published the source code.

1. Yes it did.
2. ok
3. God made me a retard when it comes to programming...

In your case I would suggest to pull pins 6,7,8 and 9 to +5 over 47k. I'll probably add these resistors to the schematics as optional.

[slayer666]

1. Did putting 47k resistor fix the issue or it didn't?
2. Start up delay is controlled by fuses settings. By the time the bootloader code starts all voltages should settle down.
3. I can put a delay but not right now since I don't yet have a laptop replacement. My old one died, see "Off Topic" forum. If you're eager, you can compile the bootloader yourself, I've published the source code.

1. Yes it did.
2. ok
3. God made me a retard when it comes to programming...

In your case I would suggest to pull pins 6,7,8 and 9 to +5 over 47k. I'll probably add these resistors to the schematics as optional.

Do you mean adding them as pullup resistors?

[dmitri]

In your case I would suggest to pull pins 6,7,8 and 9 to +5 over 47k. I'll probably add these resistors to the schematics as optional.

Do you mean adding them as pullup resistors?

Exactly

[slayer666]

In your case I would suggest to pull pins 6,7,8 and 9 to +5 over 47k. I'll probably add these resistors to the schematics as optional.

Do you mean adding them as pullup resistors?

Exactly

Pullup works like a charm!!!

Thank you!!



Edit: I actually had enough space to place the pullups inside the Atmega socket. Now it's not visible anymore.