I have a circuit board with a handful of SMD chips soldered onto it. We mistakenly sent an Atmega328 to be soldered on instead of a Atmega328P. What kind of problems can I anticipate running into? We are planning on using the 8 MHz internal oscillator.
Currently I have the bootloader “ATmegaBOOT_168_atmega328_pro_8MHz” gathered from a link in the “Minimal Circuit (eliminating external clock)” section of https://www.arduino.cc/en/Tutorial/ArduinoToBreadboard. I see inside the “boards.txt” file that the mcu is set to atmega328p, which may end up being a problem:
In the past I was able to upload new sketches to a 328P I have by selecting the 8MHz board downloaded from the link above in the Arduino IDE, and then compiling the sketch into a hex file. I would then use avrdude to upload the hex file. I see that avrdude may be able to expect the 328 by changing the -p option so the command looks something like below:
.\avrdude.exe -C"C:\Program Files (x86)\Arduino\hardware\tools\avr/etc/avrdude.conf" -v -patmega328 -cavrispmkII -PCOM6 -b57600 -D -Uflash:w:“path to my compiled sketch”:i
My main concern is that I will have trouble compiling a sketch to a hex file due to the Arduino IDE expecting a 328P rather than the 328 I need to use.
Thank you for any insight!