Hi
I've got a couple of 328P from uno's that were programatically bricked.
I want to reload the boot loader. Using ISP on an avrice (mkii) finds no chip.
ATMEL doco on stk500 says support for 328P [no]
I assume I need to HV program with an stk500 type tool thar does do 328P (stk600 ??)
Is there any way forward or are these 328Ps dead forever?
What would I do?
Working uno on avrisp (ISP) gives all sorts of stuff: Chip ID, fuses, memory etc etc
My worry is buying new 328's lets the guy who bricked them do it again as he has no idea of what he did.
Thanks
James
The High Voltage Rescue Shield should allow you to reset the ATmega328p to factory settings, even if serial programming has been disabled. From there you can use an ISP to write a fresh bootloader.
When you try to write the bootloader are you providing the 16 MHz crystal? The ATmega needs the system clock running to do serial programming.
Sounds like the guy who killed them needs to learn what he is doing before he gets more. Either that or let him pay for his mistakes.
Have you hooked up the chips with an oscilator/resonator, both power connections and grounds, bypass caps and then tried to reprogram? If so I would say that they are probably toast.
Have you put a known working chip in his board to see if the board still functions? I have found mine to be pretty robust, but then again I do understand some of the rules of electronics and I try to do a little research before I hook things up...
Have you done any research into how he damaged them in the first place? Or should he not be allowed to play with anything sharper than a 4 inch rubber ball?
You can buy a 2328P from various sources with the bootloader pre-installed. Buy a couple for your own use and don't leave them where your buddy can find them. (better yet, find some more intelligent friends who don't screw up your stuff and leave you holding the bag...)
Sounds like the guy who killed them needs to learn what he is doing before he gets more. Either that or let him pay for his mistakes.
Have you hooked up the chips with an oscilator/resonator, both power connections and grounds, bypass caps and then tried to reprogram? If so I would say that they are probably toast.
Have you put a known working chip in his board to see if the board still functions? I have found mine to be pretty robust, but then again I do understand some of the rules of electronics and I try to do a little research before I hook things up...
Have you done any research into how he damaged them in the first place? Or should he not be allowed to play with anything sharper than a 4 inch rubber ball?
You can buy a 2328P from various sources with the bootloader pre-installed. Buy a couple for your own use and don't leave them where your buddy can find them. (better yet, find some more intelligent friends who don't screw up your stuff and leave you holding the bag...)
Thanks for the answers.
Just for interest / info:
I suggested arduino to a camera enthusiast. 'It's easy I told him' 'use the arduino IDE ....' so I feel a tinge of guilt.
I was trying to program on a working arduino uno board. Works with my 328 but not with any of his
My only frown is you do one and it stops working - why try again and again ...
