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Forum Index : Microcontroller and PC projects : Picomite bootup time
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| apalert Newbie  Joined: 06/07/2023 Location: AustraliaPosts: 15 |
With Micromite Explore 28 I find time to bootup and run a program is a fraction of a second with either USB or battery power. With my Picomite it takes about 2 seconds on USB power or 5 seconds on battery. Does that seem normal? |
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Grogster Admin Group  Joined: 31/12/2012 Location: New ZealandPosts: 9306 |
Yes. With the PicoMite or PicoMite VGA, all of MMBASIC is stored in the external QSPI memory chip. At boot-up, the 2040 chip copies key sections of the MMBASIC interpreter into the 2040's RAM, then starts the interpreter. You need to wait a few seconds with the Pico-based ports, for the chip to "Boot" vs the PIC32-based ports of MMBASIC, which start instantly. It is done this way, due to lack of memory resources on the RP2040 chip vs the memory available on the PIC32 series of chips. Perfectly normal - and unavoidable, before you ask!  Smoke makes things work. When the smoke gets out, it stops! |
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| WhiteWizzard Guru  Joined: 05/04/2013 Location: United KingdomPosts: 2817 |
Hello everyone - after a much needed break, I am back!!! This ‘delayed’ startup time confused me at first but I was determined to solve it  If you enable the Serial-Console option (ie as if you’re going to talk via an external usb-to-uart module), you’ll see the Pico start up almost instantly. I can only assume the startup routine is looking for a confirmed console connection via the Pico’s usb port; you can see this ‘delay’ if your terminal app isn’t running when you connect the Pico to your computer (and the Pico is controlling some kind of visual or audible device so you know when it has eventually started). I have several battery powered standalone Pico’s with OPTION SERIAL CONSOLE …. set, and with the ability to plug in an HC05 Bluetooth module should I need to program the Pico…… Hope this helps 👍 For everything Micromite visit micromite.org Direct Email: whitewizzard@micromite.o |
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| robert.rozee Guru Joined: 31/12/2012 Location: New ZealandPosts: 2350 |
hi WhiteWizzard. is really good to see you are back and ok. cheers, rob :-) |
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| PhenixRising Guru Joined: 07/11/2023 Location: United KingdomPosts: 858 |
Huh? A "break" for me is getting rid of people so that I can get back to playing with Mites Really great to see you back  |
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| WhiteWizzard Guru Joined: 05/04/2013 Location: United KingdomPosts: 2817 |
Focussing on the original question; can I just confirm that my answer was related to a standard PicoMite - I have not tried this on the vga or web versions of the Pico. Can anyone else confirm if setting OPTION SERIAL CONSOLE speeds up these boot times too (assuming they are also ‘delayed’ when not connected to a terminal app!) Thanks For everything Micromite visit micromite.org Direct Email: whitewizzard@micromite.o |
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| apalert Newbie Joined: 06/07/2023 Location: AustraliaPosts: 15 |
Thanks Grogster, good to know it wasn't my fault :) |
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Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 6787 |
Hiya WW! Great to see you back. :) Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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| apalert Newbie Joined: 06/07/2023 Location: AustraliaPosts: 15 |
Yes, standard Picomite. It's a huge improvement, many thanks :) With USB power it boots in well under 1 second. On batteries bootup seems to be now about 1 second. I can live with that, was planning for user to hold in rotary encoder switch 1 second to boot the device so will probably make my coding easier! |
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| WhiteWizzard Guru Joined: 05/04/2013 Location: United KingdomPosts: 2817 |
…..but do try setting OPTION SERIAL CONSOLE to speed it up (refer to the User Manual for the 2 (or3) required parameter values) SORRY - messages crossed as my webpage hadn’t refreshed Edited 2024-02-26 21:01 by WhiteWizzard For everything Micromite visit micromite.org Direct Email: whitewizzard@micromite.o |
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| PhenixRising Guru Joined: 07/11/2023 Location: United KingdomPosts: 858 |
FWIW: ARMmite H7 is serial console and boots <1sec H7 is  |
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bigmik Guru Joined: 20/06/2011 Location: AustraliaPosts: 2914 |
Welcome back to the fold Phil, Regards, Mick Mick's uMite Stuff can be found >>> HERE (Kindly hosted by Dontronics) <<< |
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| Grogster Admin Group Joined: 31/12/2012 Location: New ZealandPosts: 9306 |
I will have to have a play about with a Pico module now, cos it seems I might have put you crook!  My reply was pretty much a copy/paste of an answer to a similar question I asked a while back. Put an LED on an I/O pin, write a single line of code to make that pin high. Plug in the power to the Pico, time how long it takes for the LED to light - it's always been about six seconds for me....Pico OR PicoVGA. Now I have to experiment! Oh, and also fantastic to see you back on the forums WW - I think we all thought we had lost you to other projects and you might not be back, so good to see you back again. Smoke makes things work. When the smoke gets out, it stops! |
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| cosmic frog Senior Member  Joined: 09/02/2012 Location: United KingdomPosts: 284 |
I've just tried this on a standed PicoMite and the boot up time is amazing. OPTION SERIAL CONSOLE GP4,GP5,B Dave. ps. Welcome back Phil. |
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| matherp Guru Joined: 11/12/2012 Location: United KingdomPosts: 9115 |
#ifndef USBKEYBOARD if(!(Option.SerialConsole==1 || Option.SerialConsole==2) || Option.Telnet==-1) while (!tud_cdc_connected() && mSecTimer<5000) {} #endif |
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| Grogster Admin Group Joined: 31/12/2012 Location: New ZealandPosts: 9306 |
WTF?!  This is why I refuse to deal with C....  Utterly confusing, syntax wise.  But again - that is only cos I don't code in C, cos I don't understand C. Edited 2024-02-28 16:38 by Grogster Smoke makes things work. When the smoke gets out, it stops! |
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| matherp Guru Joined: 11/12/2012 Location: United KingdomPosts: 9115 |
Basic C syntax maps 1:1 onto MMBasic if NOT(Option.SerialConsole=1 OR Option.SerialConsole=2) OR Option.Telnet=-1) then do while ( NOT tud_cdc_connected() AND mSecTimer<5000) : LOOP If there isn't a serial console or a telnet console specified then wait for a USB CDC connection for a maximum of 5 seconds Edited 2024-02-28 18:35 by matherp |
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| apalert Newbie Joined: 06/07/2023 Location: AustraliaPosts: 15 |
So there is 5 second boot time on battery power cited in my original post. Does the delay have to be that long? If booted from USB it is there from the get go so why not loop for say just 1 second? |
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| Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 6787 |
Only guessing... Probably because the three tests are very fast. Windows needs time to recognise an attached device before creating a virtual COM port and connecting to it. It may not be able to do that within a second. Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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| Grogster Admin Group Joined: 31/12/2012 Location: New ZealandPosts: 9306 |
Agreed. And does indeed seem I was wrong and putting you crook on my first reply - sorry about that.  According to what has been discussed in this thread, if you define the console to some pins on the Picomite, then this delay is essentially elimionated completely - not to paraphrase an earlier post from another member that pretty much states the same thing. I was unaware of this. But now that I know, I think I will still just use as-is, cos it is really convenient to be able to use the 2040 USB VCP, and 5-6 seconds is of no concern - TO ME. But I can see it might be a nuisance to some members, and so in that case, setup some console pins as part of the process, and things should start more-or-less instantly. Good to know! Smoke makes things work. When the smoke gets out, it stops! |
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