MicroPython Forum

"field1={:.1f}\n" + int(k) You are trying to add a string and an integer here, which does not work (it can’t tell whether you mean string concatenation or number addition). Judging from the format placeholder in the string, what you probably meant is "field1={:.1f}\n".format(int(k)) To find such pr...

Glad you got it solved!

nagylzs wrote: ↑

Sun Mar 10, 2019 11:17 am

It is never executed by the interpreter
…
this main.py file

You are contradicting yourself here. If the file is named main.py, then it is executed by the interpreter. Which of the two is it?

Doh! Thanks, Dave. That’s what I get for trying to solve technical questions with the mushy brain that comes from a cold. With the correct loop bounds, it takes 5.8 ms.

First, if this code wasn’t in a function, put it in one: local variables are faster than global ones. This takes 9 ms on my ESP8266: def run(): ba = bytearray(120*4) start = utime.ticks_us() for i in range(120): ba[i*4+0] = 255 ba[i*4+1] = 255 ba[i*4+2] = 255 ba[i*4+3] = 255 end = utime.ticks_us() p...

How are you transferring the file to the board? Could it be an FTP connection in text mode or something else that mangles line endings when it thinks a file is text?

https://docs.python.org/3/library/io.html#io.IOBase.readline specifies that The line terminator is always b'\n' for binary files so I would say the MicroPython behavior is correct, and your CPython probably isn’t Python 3. The easiest way to resolve this is to replace the CRs in your PBM file by LF...

You are confused about how the flash is organized. The MicroPython firmware is not a file, it lives outside of the FAT filesystem in raw flash. The FAT filesystem is located in a different part of flash. Python files that you want to run need to live inside the filesystem, and you don't install them...

Try just ignoring the error messages and typing over them, I expect that even though you can’t see what you type, the REPL should still be functional and you should be able to turn off the WiFi that way.

This feature is not part of that release yet, you need to use a newer daily build or build your own. I believe the relevant commit is afd0701, which should make any of the daily builds available from the download page suitable.