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Forum Index : Microcontroller and PC projects : change hdmi pins
| Author | Message | ||||
stanleyella Guru  Joined: 25/06/2022 Location: United KingdomPosts: 2152 |
hi, got hdmi usb 2350/pico 2 and added the sound filter... took ages to solder such a small simple circuit. anyway I want to solder it to vero and can I use gp 16,17,18,19,20,21,22,26 as they all on same side of pico and using vero less horizontal wiring? using gp 12,13,14,15,16,17,18.19 now. I was gonna just solder the molex leads to vero, it would be electrically ok. they use ribbon cable in pcs  |
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javavi Senior Member  Joined: 01/10/2023 Location: UkrainePosts: 260 |
For Pico2 on the RP2350 chip, the HDMI connection pins are rigidly assigned to the GP12...GP19 ports, since a special HSTX serializer block is connected to them inside the chip. Therefore, HDMI video output using this block is possible only on these pins. |
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| matherp Guru Joined: 11/12/2012 Location: United KingdomPosts: 9185 |
You have been told this so many times....... |
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| stanleyella Guru Joined: 25/06/2022 Location: United KingdomPosts: 2152 |
missed it. must be using optimex and hdmi pins explanation. dim but keen, got it now,sorry to piss you off. option list PicoMiteHDMI MMBasic USB Version 6.00.00RC15 OPTION SERIAL CONSOLE COM2,GP8,GP9 OPTION AUTORUN ON OPTION FLASH SIZE 4194304 OPTION COLOURCODE ON OPTION KEYBOARD UK, 0, 0, 600, 150 OPTION CPUSPEED (KHz) 315000 OPTION HDMI PINS 1, 3, 7, 5 OPTION SDCARD GP22, GP6, GP7, GP4 OPTION AUDIO GP26,GP27', ON PWM CHANNEL 5 OPTION MODBUFF ENABLE 192 on a homemade board I use the default hdmi to an adaptor with just 220r in series. sd reads wav and plays on audio. usb kb/mouse ok. will solder but use ribbon cable not horizontal wires or wide vero needed. > option list PicoMiteHDMI MMBasic USB RP2350A Edition V6.00.01RC4 OPTION SERIAL CONSOLE COM2,GP8,GP9 OPTION AUTORUN ON OPTION FLASH SIZE 4194304 OPTION COLOURCODE ON OPTION KEYBOARD UK OPTION CPUSPEED (KHz) 315000 OPTION DISPLAY 30, 53 OPTION SDCARD GP22, GP6, GP7, GP4 OPTION AUDIO GP0,GP1', ON PWM CHANNEL 0 > |
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Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 6839 |
Stan: The pins that the HSTX uses for HDMI output are fixed and cannot be changed. They work as four pairs and all you can change is the order of the pairs within the group. Personally I think it's misleading to to still call them GP12 to GP19 when you have the HSTX running. They aren't, and you can't use them as GPnn pins at all, they've gone. They are HSTX0 to HSTX7, which makes a lot more sense when you use the OPTION HDMI command. Sorry, the HSTX pins are as movable as the GND pins are. :) Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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