Hello AVR community, I am involved with a custom PCB implementation of a mega2560 and I cannot seem to figure out my situation. I am unable to connect to the mcu over USB serial(FT232RL) with a baud rate any higher than 57600, as everything received on the serial port is just scrambled. So my guess would be some sort of clock calibration? I thought I had the correct fuses for my setup, but maybe someone could verify or lead me in the right direction to figure things out.
The board has a 16Mhz miniature ceramic crystal on XTAL1 & 2 so the
high LOW fuse is set at 0xFF.
low HIGH fuse for the boot loader is 0xD8.
The extended BOD fuse is at 0xFD.
What can I try to tackle this problem? Thanks, Chris