I have been using an FTDI chip and an Arduino Pro Mini 328P 16Mhz 5v for a while now. I have 4 of the Pro Minis and I have 4 of the FTDI chips. I have been working on a sketch for over a week. I have been uploading and changing sketches with no issue.
Suddenly tonight, for some reason, I started getting this error:
Arduino: 1.6.9 (Windows 10), Board: "Arduino Pro or Pro Mini, ATmega328P (5V, 16 MHz)" Sketch uses 2,186 bytes (7%) of program storage space. Maximum is 30,720 bytes. Global variables use 252 bytes (12%) of dynamic memory, leaving 1,796 bytes for local variables. Maximum is 2,048 bytes. avrdude: stk500_paged_load(): (a) protocol error, expect=0x14, resp=0xff avrdude: stk500_cmd(): programmer is out of sync avr_read(): error reading address 0x0000 read operation not supported for memory "flash" avrdude: failed to read all of flash memory, rc=-2 avrdude: stk500_disable(): protocol error, expect=0x14, resp=0xff Problem uploading to board. See http://www.arduino.cc/en/Guide/Troubleshooting#upload for suggestions. This report would have more information with "Show verbose output during compilation" option enabled in File -> Preferences.
I have tried just about every combination of FTDI chip to Pro Mini. I will get one to start programming, and then that combination will start getting this same error.
I saw the comment about "This report would have more information with "Show verbose output during compilation" option enabled in File -> Preferences." so I turned it on and tried again. I will post that next.
I am stuck. What could be causing this?