My project is running on a tricket 3v. I was able to enter in bootloader mode to upload my code just fine. Now that I did all the soldering, I need to change my code but can’t get in bootloader mode. For my project, I’m using all the pins including GPIO 3 and 4. I’ve read in the documentation that:
Can it be why I can’t get in bootloader mode? Do I have to desolder pin 3 and 4 to fix this?The next 2 pins (GPIO 3-4) are also used for USB programming. That means that when the Trinket is connected to a computer and in bootloader mode or in the middle of uploading a new program, they are used for sending data to/from the computer! It's possible to share these pins if you are careful. The best use of these pins is as outputs to things like LEDs. We didn't want to keep these pins off the board but we strongly recommend not using them unless you're sure you need them since you might have to disconnect any connections to reprogram the Trinket
Thank you