I have a board i made which is a pro mini in effect.
i have used 12pf xtal caps and im hoping that isnt an issue.
the problem is uploading the bootloader. i have tried to upload the bootloader using arduino ISP using a cloned arduino. The genuine arduino i have will not accept new sketches for some odd reason so im unable to upload the ardiuno isp sketch to it.
There is an error i get from the cloned arduino when uploading the bootloader which is:
so what i did instead was switched to my XGECU TL866 (with the ICSP connection)
i have connected 5v, gnd, mosi, miso, reset and sclk together respectively and the XGECU software reads the chip well - it’s blank - no fuse bits set either
i managed to buy from ebay the same chip i am using (atmega 328p-AU with arduino bootloader) and use an adapter in the ZIF socket to dump the chip so i have a BIN file.
My boards im looking to program already come pre-populated with the 328p so i have to program it using ICSP , so now that i have the bin dump i go to flash it but i get an error.
i believe it may have something to do with setting the fuse bits as if i try to set them by themselves i get similar errors.
1.screenshot of a sucessfull read of my chip on my custom board though ISCP
2. successful write of what was previsouly read from the chip (even though its blank)
3. an error when programming the chip with an identical 328p with arduino bootloader dump
4. the fuse settings of the dump file.
5. the schematic.
lastly, im not sure it is the xtal caps ( i could be wrong) but if so as a last resort, i could remove them and upload a 8mhz bootloader to see . the issue is with that that i dont have the bin dumps of a simple blink sketch of them.
am i overlooking somthing here?
what is the problem, how come the bootloader wont upload?