MicroPython Forum (Archive)

Was able but now cannot get REPL >>> prompt with Pyb. Tried everything I can think of during the past week except shorting bootc pin to 3.3V.

Otherwise, Pyb v1.0 edits, saves main.py from Windows 7 and runs short program.

I need help. Without REPL, cannot debug longer programs?

Yes, different COM port for each Pyboard otherwise cannot save or see script on main.py. Closed putty and ejected Pyboard each time. Find main.py after plug-in and then restart putty is routine to avoid additional problem created by procedure.

Excited too soon. REPL >>> prompt disappeared again. Worked after loading STFM32 v3.0.5 firmware but REPL prompt does not appear for next 3 Pyboards. I tried both modify and repair options during reloading of firmware but now all 4 Pyboards cannot get a REPL prompt with putty. Still can read and sav...

Finally returned missing >>> prompt on REPL using putty with my Windows 7! Don't need to short boot pin to 3.3V. I downloaded DfuSe USB DFU driver from www.ST.com. DfuSe v3.0.5 contains v3.0.4.0 for Windows 7 x64. Requires WinZip to unzip file from ST. Then run STMicroelectronics DfuSe_Setup program...

Hi dhylands,

I will short boot pin to 3.3V. Since existing STM32 Bootloader with Windows7 is unstable to maintain the REPL >>> prompt on both my computers, do you know online site to download a better STM32 bootloader for Windows7?

Thank you so much for specifics to help solve my problems,

Thanks dhylands for reply.

I had rebooted Pyboards many times. Am able to save main.py and RST to run script afterwards but no REPL prompt for debug. Any other suggestion?

No idea what else to try other than to reload DFU?

Lacking REPL prompt has become show stopper prototyping with Pyboards. After saved main.py and pressed RST, alternatively flashing green and yellow LEDs error message occurred although the simple script had worked before. Documentation states use REPL to debug but REPL >>> prompt disappeared from bo...

Tried USB Dell Diagnostics on Dell laptop per recommendation from BillG. Diagnosis did not detect problem. Dell provided additional diagnosis from iolo Technologies which corrected miss-placed links, security, etc. Unfortunately, Windows 7 Professional still cannot get REPL prompt with putty. There ...

I am learning PYBLite is different. One must change PYBv1.0 codes to run on PYBLite v1.0. Since I have 2015 PYBv1.0 and the July 2016 PYBv1.1 boards, I plugged in 3 flavors of PYB boards to compare. Each board takes on a different COM. I can download main.py and run program on PYB OK. Putty worked b...

Maybe my difficulties are related? I just received 3 PybLite V1.0 (v1.5.2); had putty - REPL working yesterday on 2 different computers. But, cannot get >>> prompt anymore using either Putty or Tera Term on both Windows7 computers today. Uninstall and reinstall pybcdc driver does not help. Pyboard i...