 Notice. New forum software under development. It's going to miss a few functions and look a bit ugly for a while, but I'm working on it full time now as the old forum was too unstable. Couple days, all good. If you notice any issues, please contact me. |
Forum Index : Microcontroller and PC projects : 2350 future and hdmi and usb
| Author | Message | ||||
stanleyella Guru  Joined: 25/06/2022 Location: United KingdomPosts: 2108 |
I've fallen for pico2 stuff. dropped into usb vga and olimex for hdmi and just picomite ili9341. what does 2350 d0 for ili glcd? is it worth it? vga has mode 3, cool. hdmi same mode 1 to 3 then other low res modes with more colours, I think. is pico2 the future?  |
||||
Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 6760 |
On a LCD display your colours and resolution are always defined by the display's capabilities. MMBasic can provide RGB888. The speed of the display is set by the interface. SPI is restricted by the maximum that the display can handle. For best speed you need a 16-bit parallel interface to the display (and one that can handle it, of course!). In parallel mode a 2350 is faster than a 2040. I think they are about the same in SPI mode, although processing of the framebuffer is faster so the display may appear to be a bit quicker. I've not proved this as I've not had a ILI9341 on a 2350 yet. VGA colours are restricted to 16 by the resistor network. That's the maximum that MMBasic will provide on any platform. They will always be the same colours because it's defined in hardware. HDMI can provide many, many more colours, depending on resolution. Even when only producing 16 colours they can be chosen from a much larger palette. Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
||||
| stanleyella Guru Joined: 25/06/2022 Location: United KingdomPosts: 2108 |
It was posted the 2040 doesn't do hdmi, needs 2350 but the board I bought is advertised as 2040 dev board but uses hdmi? I use it with 2350. https://thepihut.com/products/olimex-rp2040-pico-pc-for-raspberry-pi-pico |
||||
| Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 6760 |
The RP2040 can't do HDMI from MMBasic. It can to some extent if you program it in C. That's why the Olimex board is described as a RP2040 dev board - they expect you to program it in C or microPython. Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
||||
| stanleyella Guru Joined: 25/06/2022 Location: United KingdomPosts: 2108 |
Ta Mick, "C or microPython" , wish I learnt, had a c compiler for zx spectrum but as easy to master then as now. |
||||
| PhenixRising Guru Joined: 07/11/2023 Location: United KingdomPosts: 852 |
Write in BASIC, copy it and paste into copilot and ask it to translate to Python. Do snippets at a time  |
||||
| stanleyella Guru Joined: 25/06/2022 Location: United KingdomPosts: 2108 |
try converting this gcbasic to mmbasic AS7262lib=todo.zip AS7262spectrum-gcbtopico.zip |
||||
 Print this page |
