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Forum Index : Microcontroller and PC projects : DDS frequency generator using PicoMite
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IanRogers Senior Member  Joined: 09/12/2022 Location: United KingdomPosts: 151 |
Howdy. On Geoff's web site there is a piccy of the DDs frequency generator and a pico. Is there a basic program with the pico as the target? I can rewrite it, but if it is there , so to speak ? Cheers Ian Edited 2023-04-25 19:14 by IanRogers I'd give my left arm to be ambidextrous |
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Geoffg Guru  Joined: 06/06/2011 Location: AustraliaPosts: 3196 |
I have not tested it on the PicoMite but it should work exactly the same - no rewriting required except for changing the I/O pin allocations and initialising the SPI channel. Geoff Geoff Graham - http://geoffg.net |
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| IanRogers Senior Member Joined: 09/12/2022 Location: United KingdomPosts: 151 |
Well lets test it then! Just have another AD9833 coming as the one I had was the smaller (blue) model and I need the green one. Cheers I'd give my left arm to be ambidextrous |
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| Bleep Guru Joined: 09/01/2022 Location: United KingdomPosts: 512 |
Hi I did this last year. link to forum topic Function Generator. I made it fit a 480x320 screen, simply because I had a surplus of them, if you want a different resolution you'll need to re-jig the layout. I'd be interested to see if you get the same sort of distortion I was getting on the Square wave and triangle wave at higher frequencies. Regards Kevin. Edited 2023-04-27 04:54 by Bleep |
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| IanRogers Senior Member Joined: 09/12/2022 Location: United KingdomPosts: 151 |
Very nearly... However! I have an error message Line: "OPEN SPI 100000, 2, 16" Yeilds "Not all pins set for SPI" But the screen is on and working? I'd give my left arm to be ambidextrous |
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| IanRogers Senior Member Joined: 09/12/2022 Location: United KingdomPosts: 151 |
Also font #7 cannot be redefined, so I made it font #9 Hopefully it wont mess with anything I'd give my left arm to be ambidextrous |
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| IanRogers Senior Member Joined: 09/12/2022 Location: United KingdomPosts: 151 |
Just swapped for spi2 using GP26, 27 and 28 SETPIN GP28,GP27,GP26, SPI2 Same error message. "Not all pins set for SPI2" Edited 2023-04-27 21:37 by IanRogers I'd give my left arm to be ambidextrous |
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| JohnS Guru Joined: 18/11/2011 Location: United KingdomPosts: 3805 |
I suspect to have any chance of a useful reply you need to provide your option list and the program listing at least up to the error line. Also, VGA or non-VGA. John |
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| IanRogers Senior Member Joined: 09/12/2022 Location: United KingdomPosts: 151 |
Okay.. Non VGA I have tried version 5.0704 5.0705 and 5.0706 > option list OPTION SYSTEM SPI GP18,GP19,GP16 OPTION AUTORUN ON OPTION LCDPANEL ILI9341, LANDSCAPE,GP14,GP15,GP13 OPTION TOUCH GP12,GP11 GUI CALIBRATE 0, 3868, 3847, -911, -653 OPTION SDCARD GP22 > Everything else is Geoff's code. Edited 2023-04-27 22:23 by IanRogers I'd give my left arm to be ambidextrous |
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| matherp Guru Joined: 11/12/2012 Location: United KingdomPosts: 9131 |
Works perfectly for me setpin gp26,gp27,gp28,spi2 spi2 open 1000000,3,8 Note: if you use SPI2 CLOSE then you will need to re-allocate the pins again using setpin Edited 2023-04-27 22:39 by matherp |
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| IanRogers Senior Member Joined: 09/12/2022 Location: United KingdomPosts: 151 |
I dont want to use SPI2 If I use Geoff's code must I not use SPI close?? I'd give my left arm to be ambidextrous |
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| IanRogers Senior Member Joined: 09/12/2022 Location: United KingdomPosts: 151 |
Peter! Take the DDS generator bas file and load it into a pico.. Change the FSY and CS to suit and the SPI command is always opened then closed with every function. I should imagine the pico doesn't work like that!! The level change and AM changes are both the same. If I want to use SPI 1 then I'll have to keep it open. BUT the report is still the same "Not all pins set for SPI" I'd give my left arm to be ambidextrous |
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| JohnS Guru Joined: 18/11/2011 Location: United KingdomPosts: 3805 |
So you still have such as CPU 48 and the pins CS, FSY, TrigPin as 17, 18, 16? John |
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| IanRogers Senior Member Joined: 09/12/2022 Location: United KingdomPosts: 151 |
Nope cpu 48 remmed out CS FSY and TriPin are now on GP8, 9 and 10 Edited 2023-04-27 22:59 by IanRogers I'd give my left arm to be ambidextrous |
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| IanRogers Senior Member Joined: 09/12/2022 Location: United KingdomPosts: 151 |
Gonna give up for a bit. Using LOAD "" to get the bas file from the SD card !!Great. After manipulation of the file I typed SAVE "gen.bas" Error... Low level error on SD... Now the SD card was missing in action. I'm going through my circuit to see if I can find anything. Edited 2023-04-27 23:15 by IanRogers I'd give my left arm to be ambidextrous |
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TassyJim Guru Joined: 07/08/2011 Location: AustraliaPosts: 6101 |
SPI CLOSE is in 4 lines. 419,453,483 and 499 That means that there are 4 SPI opens. I noticed that the SPI speed changes at least once so I would strongly suggest that you do use SPI2 and leave the system SPI alone. CPU 48 is in more than one location also. No time to assemble a working unit today. Jim VK7JH MMedit MMBasic Help |
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| Bleep Guru Joined: 09/01/2022 Location: United KingdomPosts: 512 |
I've already done all this for you, all you need to do is resize the screen to whatever lcd resolution you want or use 380x320! Regards Kevin. |
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| IanRogers Senior Member Joined: 09/12/2022 Location: United KingdomPosts: 151 |
Hi Jim Tried that but it still complains about SPI2 not all pins are setup. I have an ILI9341 The SD card will not write but will read. screen is fine and touch is fine. its weird.. One of those issues when I find it it'll be something blatantly obvious. Kevin! Tried to look for your code. It isn't on those two pages you link in. I have scrubbed the pico reinstalled the 5.0706 UF2 and the SD still wont save even with a basic program... It saves to A: (flash) but wont save to the SD. I have tried four or five SD cards normal and micro same. The error is:- > list Text 0,0 "ALEXIA" ,,3,2 > drive "B:" > files B:/ 08:50 26-04-2023 48073 SigGenerator.bas 0 directories, 1 file > save "genny.bas" Error : A hard error occurred in the low level disk I/O layer > I'd give my left arm to be ambidextrous |
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| TassyJim Guru Joined: 07/08/2011 Location: AustraliaPosts: 6101 |
The link to Kevin's code is in his first post as a ZIP It is well worth getting as is solves a number of compatibility issues. As it happens my setup uses SPI2 for system so I used SPI for the module. I have a non-responding MCP41010 chip so can't change the level. I need to look closer at the traces etc. Jim VK7JH MMedit MMBasic Help |
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| IanRogers Senior Member Joined: 09/12/2022 Location: United KingdomPosts: 151 |
Okay... Bit of a penny dropped. SPI on the screen isn't any thing to do with the SPI command I'm trying to use. I was connecting to the same SPI pins Ergo the builtin commands for the SD, screen and touch deal with open close and setpins. If I set up SPI for the AD9833 module I have to do that individually.. A bit different to the MicroMite. LATER!!! I have it nearly working.. The SD card still barfs but I have the program on A Swapped the AD9833 to SPI2 ( thanks Jim) it'll be better I'm sure. BUT!! this line "SetPin Peek(byte Peek(word &H9D000090) + 23), INTL, MyInt" went way over. At the end it said "Setpin 15 off" but pin 15 isn't on the schematic?? I'd give my left arm to be ambidextrous |
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