PaulStoffregen
Well-known member
Fixed 1 more very minor issue. Sometimes after loading a very small program, the bootloader would attempt to talk to the IMXRT chip before it was really ready. This is really a non-issue, since it will just retry and succeed when the IMXRT is ready. Probably every Teensy 4.0 & 4.1 we've ever made does this.
But now with every type of error resulting in a pattern of red LED blinks, little things like this give a false alarm of trouble. I fixed it by adding a 2 ms delay after uploading is complete. Even 100 us seems to prevent the problem, which only happens about 1 of every 10 uploads, and only with certain very small programs.
Just pulled the chips from 2 more virgin boards and soldered on freshly programmed ones. Really hoping this is the final version! I will be doing a lot more testing with these 2 boards over the weekend.
But now with every type of error resulting in a pattern of red LED blinks, little things like this give a false alarm of trouble. I fixed it by adding a 2 ms delay after uploading is complete. Even 100 us seems to prevent the problem, which only happens about 1 of every 10 uploads, and only with certain very small programs.
Just pulled the chips from 2 more virgin boards and soldered on freshly programmed ones. Really hoping this is the final version! I will be doing a lot more testing with these 2 boards over the weekend.