Search found 30 matches

by smhodge
Mon Jan 20, 2020 10:09 pm
Forum: MicroPython pyboard
Topic: 3V3 regulator on pyboard
Replies: 2
Views: 52

Re: 3V3 regulator on pyboard

Got it, thanks. I got thrown off because I got the data sheet from a Mouser link, which does not list the DFN package. The link from Digi-Key does show it. The Digi-key link is dated 2011, the Mouser one is dated 2007.
by smhodge
Mon Jan 20, 2020 8:14 pm
Forum: MicroPython pyboard
Topic: 3V3 regulator on pyboard
Replies: 2
Views: 52

3V3 regulator on pyboard

I am trying to identify the 3V3 regulator on the pyboard v1.1. The schematic (dated 16/10/2015) lists it as a MCP1703, but I can't find a chip on the board with the correct markings in the data sheet for the MCP1703. Was the regulator changed from that on the schematic? Thanks.
by smhodge
Wed Jan 15, 2020 7:20 pm
Forum: MicroPython pyboard
Topic: Can't see pyboard in DFU mode after firmware update
Replies: 5
Views: 499

Re: Can't see pyboard in DFU mode after firmware update

I'm going to pick up from where this thread left off. I have the same problem, plus others. A few months ago I successfully upgraded the firmware on two 1.1 pyboards to v1.10. I used the DfuSe demo utitilty from ST and did not have any issues. I made notes of exactly how I did it, all of which agree...
by smhodge
Wed Jan 01, 2020 1:05 am
Forum: General Discussion and Questions
Topic: REPL does not stop boot.py
Replies: 5
Views: 175

Re: REPL does not stop boot.py

Thanks. I just have to remember "cadbee": Ctrl-C, Ctrl-A, Ctrl-D, Ctrl-B does it. I like your jumper technique; I'll give it a try.
by smhodge
Mon Dec 30, 2019 5:06 pm
Forum: General Discussion and Questions
Topic: REPL does not stop boot.py
Replies: 5
Views: 175

Re: REPL does not stop boot.py

OK, I see that's a good thing about the REPL, but if I use Ctrl-D when in the REPL it reboots the program. Here is the REPL session, with comments added: KeyboardInterrupt: MicroPython v1.11 on 2019-05-29; PYBv1.1 with STM32F405RG Type "help()" for more information. # test to see if in REPL >>> 1+11...
by smhodge
Sun Dec 29, 2019 3:48 am
Forum: General Discussion and Questions
Topic: SPI py2py Master and Slave comm problem
Replies: 6
Views: 1310

Re: SPI py2py Master and Slave comm problem

Perhaps it doesn't work, especially *randomly* does not work, is that your code is attempting to do too much inside the ISR -- you are attempting to do a complete SPI send. Move that out of the ISR and into the main loop and simply set a flag in the ISR that the main loop reacts to. That is what I d...
by smhodge
Sun Dec 29, 2019 3:00 am
Forum: General Discussion and Questions
Topic: REPL does not stop boot.py
Replies: 5
Views: 175

REPL does not stop boot.py

I have code running on a board (a pyboard but I don't think that's relevant) that simply uses a timer with a callback to flash a led. Works fine, starts running (because boot.py invokes it) every time I reset the board. However, if I start a REPL session by using Ctrl-C while that code is running, t...
by smhodge
Wed Dec 18, 2019 7:16 pm
Forum: MicroPython pyboard
Topic: rshell paste
Replies: 3
Views: 206

Re: rshell paste

I'm using Windows command prompt (cmd.exe) to open rshell. Both Ctrl-V & Shift-Ins work directly in the command prompt window. They also work when rshell is opened in that window (to paste directly into rshell). They just don't work in paste mode of <repl>.
by smhodge
Mon Dec 16, 2019 8:43 pm
Forum: MicroPython pyboard
Topic: rshell paste
Replies: 3
Views: 206

rshell paste

Another rshell issue. I can't get paste mode to paste. I get the prompt ok, but Ctrl-V leaves a single funny little square mark and Shift-Ins does nothing. Shift-Ins works fine if I use a PuTTY session. Thanks, Steve
by smhodge
Wed Dec 04, 2019 11:33 pm
Forum: MicroPython pyboard
Topic: rshell directory syntax
Replies: 5
Views: 400

Re: rshell directory syntax

Thanks. Yes, it works to go back up the tree once you've gone down the tree from the start point. It just can't go further up than the start point.