[SOLVED]frozen to REPL - not showing intro text

[jickster]

I'm using the teensy port.

When I have teensy\memzip_files\main.py set to the following, the REPL introductory text appears

Code: Select all

import pyb

print("Executing main.py")

led = pyb.LED(1)

led.on()
pyb.delay(100)
led.off()
pyb.delay(100)
led.on()
pyb.delay(100)

MicroPython v1.9.2 on 2017-10-31; Teensy-3.1 with MK20DX256
Type "help()" for more information.

But when I remove

Code: Select all

pyb.delay(100)

from the end, although I can still enter text in the REPL prompt, I do not see the introductory prompt.

I'm using PuTTY for the serial port terminal.

[dhylands]

I suspect what's happening is that the introductory text is being printed before the USB-serial link gets setup and therefore gets dropped.

Adding the delay allows the host/teensy to get it setup.

I see the same thing quite often on the pyboard as well.

If I'm at the REPL, I can press Control-D (soft reset) and then you should see the introductory text since in this case the USB-serial link doesn't get torn down and initialized.