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Forum Index : Microcontroller and PC projects : Armmite H7: 5.05.11: 4096 byte battery backed RAM
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| matherp Guru  Joined: 11/12/2012 Location: United KingdomPosts: 8566 |
I've enabled the 4096 bytes of RAM that the H743 has in the RTC domain and that can be kept alive by the RTC battery. This is proper RAM so can be written and read as many times as you want and as quickly as you want. ArmmiteH7-5.05.11.zip New function MM.BACKUP – this just returns the address of the battery backed RAM to avoid remembering it - &H38800000 Then just use PEEK AND POKE, remember peek and poke now support INTEGER and FLOAT (8 bytes each and must be on 8 byte boundary) as well as WORD (4-byte boundary) and BYTE Example: POKE FLOAT MM.BACKUP+16, 72.345 Power off, then power on ? PEEK(FLOAT MM.BACKUP+16) 72.345 > |
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| twofingers Guru Joined: 02/06/2014 Location: GermanyPosts: 1133 |
Sound like a great innovation!  Thanks a lot, Peter! Regards Michael |
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| Tinine Guru Joined: 30/03/2016 Location: United KingdomPosts: 1646 |
Man, I need you to send me your Xmas list  Soooo much appreciated, Pete. Regards, Craig. |
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KeepIS Guru Joined: 13/10/2014 Location: AustraliaPosts: 1345 |
X 10  Mike. It's all too hard. Mike. |
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| Tinine Guru Joined: 30/03/2016 Location: United KingdomPosts: 1646 |
Anyone else tried the latest firmware @540? Mine doesn't run. 480 is still OK though. And yeah, I get those odd characters at the first prompt. |
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| matherp Guru Joined: 11/12/2012 Location: United KingdomPosts: 8566 |
The "odd" characters are an escape sequence that tells the terminal to ignore mouse commands. This is a no win one. If I remove the escape sequence then leaving the editor by resetting can leave the terminal getting mouse commands and then you will really see some strange sequences. Perhaps that only happens to me while developing. Using teraterm or putty you won't see the sequences because they understand them. Try this: ArmmiteH7-V5.05.11.zip works perfectly for me on a ZI2 at 540MHz Edited 2019-11-11 04:11 by matherp |
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| Tinine Guru Joined: 30/03/2016 Location: United KingdomPosts: 1646 |
Oh heck, only just saw this and I just left the plant. Will test tomorrow. The random characters are not an issue at all, just an FYI. Many thanks, Pete. I never thought I'd use the words fast and interpreter in the same sentence. This is looking seriously good  Cheers, Craig |
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| KeepIS Guru Joined: 13/10/2014 Location: AustraliaPosts: 1345 |
FYI in case you missed the discussion on the ESC codes here: Link to thread Again I can confirm that Tera Term hides the ESC sequence and I also trapped it in the control options program I use. Mike. It's all too hard. Mike. |
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| KeepIS Guru Joined: 13/10/2014 Location: AustraliaPosts: 1345 |
New H7-V5.05.11 file posted above by Peter. H7 ZI calibrates and runs any application at 540 Mhz  H7 Z2 runs at 560 MHz, didn't try higher. USB wireless Keyboard works on both rock sold  Actually it's better on the Z2 now as I can even hot plug the tiny USB keyboard RX dongle. Mike. Edited 2019-11-11 13:57 by KeepIS It's all too hard. Mike. |
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| KeepIS Guru Joined: 13/10/2014 Location: AustraliaPosts: 1345 |
Well this is strange, the BIN file posted above is an old version V5.05.09 I Noticed it when there was no part millisecond display from reading the timer command, so checked version and it's older as above. Reloaded the previous downloaded version labeled the same version and it's indeed H7-V5.05.11. ?MM.VER 5.0511 Reading timer is back to the improved resolution. Mike. Edited 2019-11-11 14:18 by KeepIS It's all too hard. Mike. |
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TassyJim Guru Joined: 07/08/2011 Location: AustraliaPosts: 5878 |
Just to clarify the visible escape code in MMEdit MMEdit has 3 modes. ASCII will show ALL characters including VT escape codes Likewise for HEX mode. VT mode should not display VT codes even though there are plenty that it doesn't understand. IF you are using VT mode for anything other than brief tests, I would strongly advice to use TeraTerm. Use MMEdit when you do want to see the raw data. Jim VK7JH MMedit  MMBasic Help |
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| matherp Guru Joined: 11/12/2012 Location: United KingdomPosts: 8566 |
Ooops  Try again: ArmmiteH7-5.05.11.zip |
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| KeepIS Guru Joined: 13/10/2014 Location: AustraliaPosts: 1345 |
Not wanting to be pedantic but, can I clarify the correct file. The Zipped BIN file that I'm currently using has a later time stamp and is a larger file size: 2019-11-11_040901_ArmmiteH7-V5.05.11.zip Contains: ArmmiteH7-V5.05.11.bin -> 11/11/2019 12:05:39 PM -> 825 kB The Zipped BIN file in your last post is an earlier file time stamp and a smaller size. 2019-11-11_181936_ArmmiteH7-5.05.11.zip Contains: ArmmiteH7-5.05.11.bin -> 11/11/2019 9:14:44 AM -> 773 kB Mike. It's all too hard. Mike. |
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| matherp Guru Joined: 11/12/2012 Location: United KingdomPosts: 8566 |
The latest .bin is correct. The size difference is due to a different optimisation that was part of the solution to the keyboard at high clock speeds |
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| Tinine Guru Joined: 30/03/2016 Location: United KingdomPosts: 1646 |
Observation: Float multiplications appear to be significantly faster than integer on the H7  |
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| KeepIS Guru Joined: 13/10/2014 Location: AustraliaPosts: 1345 |
Just been playing around with this new feature, it's brilliant and I can see so many uses for this now. Mike. It's all too hard. Mike. |
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| Tinine Guru Joined: 30/03/2016 Location: United KingdomPosts: 1646 |
Apologies if you've already covered this Mike but what battery are you using? |
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| KeepIS Guru Joined: 13/10/2014 Location: AustraliaPosts: 1345 |
I'm using a small AA sized Li-ion 2.6Ah 3.7v (solder tag case). Edit for context: This battery is used in my H7 based Automated timber routing Controller. The battery keeps three digital linear position sensor micros powered for months at a time (micro amperes) to retain their Zero offset data and also keep track of any physical hardware position changes between machine usage cycles. Therefore I also make use of it to power the ArmH7 inbuilt RTC. Mike. Edited 2019-11-17 08:04 by KeepIS It's all too hard. Mike. |
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lew247 Guru Joined: 23/12/2015 Location: United KingdomPosts: 1676 |
Is this the last update for the H7? I can't find any later versions or has this been discontinued because of the CMM2? I've been trying to find a version of the H7 that has the ability to display graphics with the possibility of vga graphics I've found the STM32H743ZIT6U which seems to be ideal as it has the graphics capabilities to generate vga, has a 480Mhz cpu and would be ideal for making a very high spec mm device. Would it be possible/practical to have this chip running mm with all the functions that the latest version of MMbasic has? but include things like json parsing, wget, and other internet commands that might be needed if someone was to add a wifi interface to it? I've seen others wanting a version of the cmm2 but with the mm command set on it, this chip (to me) seems ideal It would be easy enough to design a board with this on it that has all the output pins available on headers, it could even be designed to take "pi hats" as there are many of those, and header pins to add a vga interface if anyone wanted it as well as ssd1963 and ILI9341/841 etc type displays, micro sd card, ram, usb and other periphials or am I just dreaming of a device which will never be |
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| matherp Guru Joined: 11/12/2012 Location: United KingdomPosts: 8566 |
Yes, it is fully functional and currently requires no updating. The ArmmiteH7 is designed as a high speed embedded controller and has a command set targetted for that - basically the MM+ with extra goodies |
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