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Forum Index : Microcontroller and PC projects : Pi-cromite V5.04.21: Serial Console
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| matherp Guru  Joined: 11/12/2012 Location: United KingdomPosts: 10310 |
Please find attached Version 5.04.21 for Stretch 2018-09-23_232033_mmbasicstretch.zip and for Jessie 2018-09-23_231328_mmbasicjessie.zip Manual 2018-09-23_220543_Pi-cromite_Manual.pdf Please delete the options file before running this new release rm .options This version solves the issue of running MMBasic automatically at boot time and makes the Pi-Zero in particular much more useful as a pseudo embedded processor. There is one new OPTION command to do this: OPTION SERIAL CONSOLE n This sets the device to be used as the MMBasic console device. By default this is 0 which is the terminal used to start the process. Alternatives are 1 and 2. Selecting one of these sets the console to use the COM1 or COM2 port on the Pi header. Changing the selection will automatically terminate MMBasic and it can be restarted. With the console set to COM1 or COM2 it is possible to run MMBasic as a background process using the Linux command: sudo ./mmbasic &>/dev/null & This can then easily be included as part of the boot process by adding the following lines to /etc/rc.local echo “Starting MMBasic” cd /home/pi sudo ./mmbasic &>/dev/null & This will automatically run MMBasic on a “Pi” at boot time as a pseudo embedded application and if OPTION AUTORUN is set and the file “AUTORUN.BAS” exists then the Pi-cromite will load and start automatically (remember filenames are case sensitive). A standard USB/Uart can be used to connect to the configured COM port at anytime to access the MMBasic console. |
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| Micro-80 Newbie  Joined: 03/03/2017 Location: Russian FederationPosts: 26 |
Very useful function. Thank you! |
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lew247 Guru Joined: 23/12/2015 Location: United KingdomPosts: 1702 |
I don't have an rc.local folder?  |
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| matherp Guru Joined: 11/12/2012 Location: United KingdomPosts: 10310 |
rc.local is a file edit it: sudo nano /etc/rc.local |
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| lew247 Guru Joined: 23/12/2015 Location: United KingdomPosts: 1702 |
I didn't realise it was a file sorry One question, does this mean that you have to use either Com 1 or Com 2 to use autorun? and you cannot run it wirelessly? I know this might sound a "stupid" question, but I'd like to be positive in understanding it |
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| matherp Guru Joined: 11/12/2012 Location: United KingdomPosts: 10310 |
Not sure I understand the question but.... You can always use autorun and whatever the console if set the program will start when MMBasic is fired up. The issue is that if you run MMBasic from the boot there is no console attached (certainly no SSL connection over wireless) so you have to use various tricks to make Linux think there is a console. By setting the console to use one of the H/W serial ports on the Pi header this whole issue is avoided. If nothing is connected the serial output pin just waggles all by itself and the program runs happily. It may be you have got round the issue another way but this method works in an obvious way which satisfies my very limited Linux understanding. |
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disco4now Guru Joined: 18/12/2014 Location: AustraliaPosts: 1003 |
Hi Peter, I am getting the error below in 5.21 but not in 5.20. Both on a PiZero-W and a Pi3. One Jessie one Stretch It is around the area of repeated JSON calls to extract data from a large data set. It fails on the 13th loop with 3 JSON calls in the loop. I have printed MEMORY at loop 12 but normal memory seems OK. If I only have one JSON call in the loop I get 40 iterations before it errors. Works for 5.20 with no issue. Error: Not enough memory6 The getFloat function just call JSON. ie. FUNCTION getFloat(parm$ as STRING, nlv as FLOAT) as FLOAT local string s=JSON$(a(),parm$) if s=parm$ or s="" then getFloat=nlv else getFloat=val(s) end function  Regards Gerry Latest F4 Latest H7 FotS |
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| matherp Guru Joined: 11/12/2012 Location: United KingdomPosts: 10310 |
The error says it is running out of temporary strings. I've upped the number in this build. I'm not aware that there was any change recently in this area but please try the attached 2018-09-24_232629_mmbasicjessie.zip 2018-09-24_232642_mmbasicstretch.zip |
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goc30 Guru Joined: 12/04/2017 Location: FrancePosts: 435 |
Hi peter I have tested new mmbasic (strech with rpi3B+) with my graphic test prog everything is good except the test 14 (write text with background transparent) you have corrected this problem on Armite prog I have also somes problems with blit and sprite, but maybe it is my own fault my prog 2018-09-25_094304_test_graph_picromite.zip |
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| MikeO Senior Member  Joined: 11/09/2011 Location: AustraliaPosts: 275 |
Hi peter, I have just got back to pi-cromite and loaded the latest version with Option serial Console set it to Com1 and successfully able to talk to the Pi/mmbasic however I find i cannot transfer programs as XMODEM RECEIVE command is not known? Is this correct ore am I missing something? I can transfer the program via winSCP ofcourse is this still the prefered way? Codenquilts |
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| disco4now Guru Joined: 18/12/2014 Location: AustraliaPosts: 1003 |
I am running the Stretch version and it runs OK ie memory6 error is fixed. I got a segmentation error when trying to run the Jessie version on what I thought was a Jessie Pi3 but I think I may have partly updated to Stretch a couple of weeks ago. The Stretch version was OK. So looks like it good. Thanks Gerry P.S. A thing I noticed that maybe only for me or not.(Not specific to 5.21) Ctrl-Z returns to unix prompt as expected when using a) a putty remote session b) a local terminal shelled from the GUI It does not return if running from the local terminal on the Pi3 i.e when you don't load the GUI or select Exit to CommandLine under the Shutdown menu. You need to type 'quit' 'quit' will also work in place of Ctrl-Z for cases a) and b) as well. Latest F4 Latest H7 FotS |
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| matherp Guru Joined: 11/12/2012 Location: United KingdomPosts: 10310 |
It never made sense to include it before but does now so I'll put it into the next release. This may be because Linux traps control codes when running on a local terminal - don't think this is one worth spending too much effort on though - you can try ctrl-D which I included as an alternative exit for some reason (may have been this but can't remember) |
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| MikeO Senior Member Joined: 11/09/2011 Location: AustraliaPosts: 275 |
Thanks Peter but Sorry to add something else! I know from some things I get involved with It's never ending, thanks again and the Pi-cromite is looking an exceptionally good option now for $15.00. Mike Codenquilts |
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| matherp Guru Joined: 11/12/2012 Location: United KingdomPosts: 10310 |
Please find attached version 5.04.22 2018-09-26_032429_mmbasicstretch.zip 2018-09-26_032749_mmbasicjessie.zip This fixes a serious bug in string handling found on the Armmite H7. This seems to relate to either a cacheing issue or a bug introduced in a recent compiler update as the bug does not occur on the MM2 or MM+ despite running identical code This update is highly recommended! |
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| lew247 Guru Joined: 23/12/2015 Location: United KingdomPosts: 1702 |
I'm trying to get my head round this to understand it properly and what I can and cannot do I've got a Pi-Zero W that I've configured headlessly Can I set the options you listed in the post and connect to the Pi using a USB cable into the USB port? Or will this not work and it has to be connected to the GPIO pins? Or is there a way to do this? |
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| matherp Guru Joined: 11/12/2012 Location: United KingdomPosts: 10310 |
I've no idea if the USB connection on the Pi-zerro supports CDC mode. If it does (but I suspect not) then you can connect to it and open a terminal session in which you could run MMBasic with OPTION SERIAL CONSOLE set to 0 just like connecting over wifi. The new functionality allows you specifically to connect a console to the COM ports on the Pi header. It may be of no use to you in which case just ignore it. The advantage to me is that I can automatically run MMBasic at boot time (with or without AUTORUN) and I can then at any time connect a USB/UART to the COM port in order to interact with MMBasic without any additional complexity. |
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| matherp Guru Joined: 11/12/2012 Location: United KingdomPosts: 10310 |
Please find attached minor bug fix to 5.04.22 - no version change This fixes an issue when you try and print a transparent text character completely off the display area of the graphics screen 2018-09-27_222719_mmbasicstretch.zip 2018-09-27_222734_mmbasicjessie.zip |
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| lew247 Guru Joined: 23/12/2015 Location: United KingdomPosts: 1702 |
I can connect to the Pi both with Wifi and the USB cable now  The issue I've got is while the screen and program ran when I removed the USB cable from the Pi it turned off after about 5 seconds I do have a separate 5V psu connected as well |
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| matherp Guru Joined: 11/12/2012 Location: United KingdomPosts: 10310 |
I suspect (based on very limited Linux knowledge) this is Linux timing out the console connection to the MMBasic task and is precisely why I implemented a console on the COM ports |
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| lew247 Guru Joined: 23/12/2015 Location: United KingdomPosts: 1702 |
Thanks Peter, I'll get a USB to serial cable and try that instead |
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