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Forum Index : Microcontroller and PC projects : PicoMite V6.00.00 release candidates - all versions
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Mixtel90 Guru  Joined: 05/10/2019 Location: United KingdomPosts: 6778 |
I wonder if it could be added to MM.INFO(OPTION nnnnn) to read the option string for OPTION AUDIO? Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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| matherp Guru Joined: 11/12/2012 Location: United KingdomPosts: 9105 |
Jim: I increased the size of the audio buffers from 8K *2 to 16k *2 while trying to diagnose a problem with the VS1053 on the RP2350 and forgot to put them back. The next RC will fix this. The actual problem was bizarre. Since forever with the RP2040 I have set the drive strength of pins to the maximum 12mA when used as outputs. On the RP2350 the SPI clock to the VS1053 was going wrong with this setting. Normally of course the clock should be either 0V or 3.3V. On the RP2350, when used with the VS1053, the clock was as expected for a few seconds and then changed to oscillate between about 2.5V and 3.3V. My suspicion is that this could be to do with the RP2350 latchup bug. I then randomly played with a bunch of the pin settings (fast edge, schmidt trigger on inputs etc.) until I discovered that changing the drive strength to anything other than 12mA fixed the problem. I have therefore changed MMBasic throughout to limit the pin drive to 8Ma on output. The next RC will also have a great improvement to the VS1053 support. Up until now there was a timer interrupt which triggers the output of data to the VS1053 as required. The sdk only supports SPI used in a blocking mode so the interrupt currently sits and waits for the SPI transmission to complete before returning. I've managed to set up the SPI transmission under DMA so that it can now run asynchronously and the interrupt can return immediately. A DMA completion interrupt then sets a flag to tell the system that it is ready to output more data if required by the VS1053. This massively decreases the CPU overhead of using the VS1053 and makes it more efficient than even the standard PWM audio. This will also be in the next release. I'm trying to think if the idea can be extended to the DAC audio but this is more difficult as it only outputs 4 bytes and has to toggle the chip select between the first and second pairs. |
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TassyJim Guru Joined: 07/08/2011 Location: AustraliaPosts: 6096 |
You are certainly having to deal with plenty of strange problems. One of our politicians once said "Life wasn't meant to be easy" Jim VK7JH MMedit MMBasic Help |
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Martin H. Guru Joined: 04/06/2022 Location: GermanyPosts: 1113 |
]play Flac [/B returns an error : Not enough Heap Memory Edited 2024-10-09 19:01 by Martin H. 'no comment |
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| matherp Guru Joined: 11/12/2012 Location: United KingdomPosts: 9105 |
See above |
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| Volhout Guru Joined: 05/03/2018 Location: NetherlandsPosts: 4222 |
Hi Peter, There may be an issue when 8mA drive strength is used with PWM audio (220 ohm resistors) and VGA video (270 ohm resistors). Not sure what the effect will be. Volhout PicomiteVGA PETSCII ROBOTS |
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electricat Senior Member  Joined: 30/11/2020 Location: LithuaniaPosts: 161 |
PicoMiteVGAUSBRP2040V6.00.00RC6 Keyboard->USB Editor->Inbuilt editor Just poking arround and: entering -> ? MM.Info(PS2) returns-> Error: Syntax If it is normal behavior, please ignore |
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phil99 Guru Joined: 11/02/2018 Location: AustraliaPosts: 2135 |
For VGA max. brightness for each input is about 9mA so 8mA is a little short for red and blue. Green has 2 pins so resistor values may need adjusting for white. It isn't a deal breaker. |
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| Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 6778 |
If you could use anywhere close to 8mA per pin on the RP2350B there'd be smoke. ;) 48 x 8mA = 384mA Maximum Total IOVDD current IIOVDD_MAX 100 mA Sum of all current being sourced by GPIO pins Maximum Total VSS current due to GPIO (IOVSS) IIOVSS_MAX 100mA Sum of all current being sunk into GPIO pins . Edited 2024-10-09 22:21 by Mixtel90 Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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| electricat Senior Member Joined: 30/11/2020 Location: LithuaniaPosts: 161 |
PicoMiteVGAUSBRP2040V6.00.00RC6 Print MM.INFO(OPTION KEYBOARD) Prints nothing Print MM.INFO(ID) Prints nothing |
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| matherp Guru Joined: 11/12/2012 Location: United KingdomPosts: 9105 |
Thanks - will fix. The first one wasn't possible until sdk2.0 because the function for unique ID was in the USB client header - bizarre Will add MM.INFO(OPTION AUDIO) returns PWM, or SPI, or VS1053, or NONE Edited 2024-10-10 03:54 by matherp |
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stanleyella Guru Joined: 25/06/2022 Location: United KingdomPosts: 2119 |
option resolution in option list? |
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| matherp Guru Joined: 11/12/2012 Location: United KingdomPosts: 9105 |
Just use mm.vres |
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| electricat Senior Member Joined: 30/11/2020 Location: LithuaniaPosts: 161 |
PicoMiteVGAUSBRP2040V6.00.00RC6 Auto adjusted monitor while being inside of inbuilt EDITOR now if I would tray simple program like for a=1 to 800 line 1,a,1024,a next a it would fill screen with lines, but not first 12 lines from top If I would Autoadjust monitor, all moves up 12 lines. If I enter EDITOR, now I miss those 12 lines at bottom. If I would press Autodajust monitor, all looks good again. And repeat. I also ran testcard.bas TassyJim test card for Picomite VGA and HDMI testcard MODE1 Ratio 1.000 640x480 I see missing 12 lines from top (black) Mode 2 and Mode 3 looks perfect Edited 2024-10-10 06:38 by electricat |
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| electricat Senior Member Joined: 30/11/2020 Location: LithuaniaPosts: 161 |
Forgot to mention. If I run something printed, then all looks OK |
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| matherp Guru Joined: 11/12/2012 Location: United KingdomPosts: 9105 |
Your report makes no sense. Why are you writing 1024 pixel long lines to a 640 pixel wide display. Why are you writing 800 lines to a 480 line high display? What CPU speed? Sounds like a monitor issue. Mode 2 and 3 use the same underlying video feed as mode 1 with no difference in timing |
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| electricat Senior Member Joined: 30/11/2020 Location: LithuaniaPosts: 161 |
Peter, I am looking at one monitor, typing to another, and in rush. So I make mistakes, sory, yes it should be 640x480 . PicoMiteVGAUSBRP2040V6.00.00RC6 CPU SPEED 252000000 If I run PRINTED GRAPHICS based program, display works PERFECTLY from top to bottom, from left to right. If I draw using LINES and it will fail like I described before (I use 640x480) Line 1,1,640,1,1 Line 640,1,640,480,1 Line 1,480,640,480,1 Line 1,1,1,640,1 if I change first line Line 1,12,640,12,1 (one character 8x12 size) It draws. -========================================== I TRY ON ANOTHER mite 2040 VGA + PS/2 PicoMiteVGARP2040V6.00.00RC4 CPU SPEED 252000000 Same monitor and LINE command works perfectly. How it could be display problem? Thank you. Edited 2024-10-10 15:42 by electricat |
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| JanVolk Senior Member Joined: 28/01/2023 Location: NetherlandsPosts: 144 |
Did some tests with RP2040 Unstable after Version 6.00.00RC3 regarding Reset and USB connection. After one or two resets, the USB connection is disconnected and must be reconnected manually. > option list PicoMite MMBasic Version 6.00.00RC4 OPTION COLOR CODE ON OPTION DISPLAY 43, 96 > memory Program: 0K ( 0%) Program (0 lines) 132K (100%) Free Saved Variables: 16K (100%) Free RAM: 0K ( 0%) 0 Variables 0K ( 0%) General 160K (100%) Free Programs crash with PicoMite RP2040 MMBasic Version 6.00.00RC6. Have program example PID loaded and works after RUN. The green LED on the Raspberry Pi Pico stops flashing after a few seconds. The program can still be allowed to run until "Test over". The program can also be stopped with Ctrl+C. After this, operation with TeraTerm but LED stopped. After a Reset no more communication. The LED on the Raspberry Pi Pico flashes again. Only then no more communication with TeraTerm and after Reset the connection is no longer restored (pullup with Cannot open COM4. Not found.) This can only be fixed manually in TeraTerm. Jan. |
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| electricat Senior Member Joined: 30/11/2020 Location: LithuaniaPosts: 161 |
@JanVolk I had some instabilities with lightning keyboard. Unexpected disconnections/reconnections and all kind of instabilities on every run/editing etc. Good stable external power source solved them all. (VSYS on pin 39) Edited 2024-10-10 18:27 by electricat |
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| guma1975 Newbie  Joined: 13/01/2023 Location: PolandPosts: 7 |
Hello. In the tested rp2350 HDMI in mode 3 I wanted to find out what r,g,b is and read one byte from MAP(15). When I enter this > mode 3 > ? map(15) 8437888 > ? peek(BYTE MAP(15)) then rp2350 rc6 hangs... What am I doing wrong? is this an rc6 error or my poor attempt at reading? sorry for my english it's from translator |
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| Page 7 of 24 |
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