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Forum Index : Microcontroller and PC projects : PicoMite/PicoMiteVGA/WebMite V5.07.07 release candidates
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homa Senior Member  Joined: 05/11/2021 Location: GermanyPosts: 248 |
Hi Peter, Unfortunately, your idea doesn't work. The variables in the file are only set with the WEB TRANSMIT PAGE command. However, the content-type$ cannot be specified there. With the WEB TRANSMIT FILE command, it's the other way round. No variables in the file, but the required content-type$ = "application/json" can be set for it! The screenshot shows very clearly how the different content types can be loaded. CSS, JavaScript, but unfortunately the variable in the file "json.data" remains unfilled and the name "myJson$" appears in the response content (Antwortinhalt). The simplest solution should be to be able to specify the desired content-type$ in the WEB TRANSMIT PAGE command and not to use the default for a website. I would appreciate your help here! Thanks again for the release of the WebMite version! Matthias  - JSON - Mozilla Firefox.png)  Edited 2023-05-06 07:33 by homa |
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| matherp Guru  Joined: 11/12/2012 Location: United KingdomPosts: 8605 |
No new functionality for the foreseeable |
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andreas Senior Member Joined: 07/12/2020 Location: GermanyPosts: 187 |
Hi, I wanted to play a self sampled flac file Play flac "werda.flac" on a maker pi pico w.Pause 3000 The problem is: it sounds like mikey mouse - it is too fast. When I do the same using a wav file, everything works good. The rp2040 runs with 133 MHz. > option list WebMite MMBasic Version 5.07.07 OPTION SYSTEM SPI GP10,GP11,GP12 OPTION COLOURCODE ON OPTION DISPLAY 50, 100 OPTION WIFI <censored>, ********************* OPTION SDCARD GP15 OPTION AUDIO GP18,GP19, ON PWM CHANNEL 1  The audio connector on the pcb is connected to a active speaker and uses gp18,gp19. -andreas |
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| matherp Guru Joined: 11/12/2012 Location: United KingdomPosts: 8605 |
You need to post the file and let me know what you think the sample rate is so I can read the header and see if it is correct |
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| andreas Senior Member Joined: 07/12/2020 Location: GermanyPosts: 187 |
werda.flac.zip The sample has 44100 Hz and consists of a short squence of two spoken words "Wer da?" which has the meaning of "who is there?". I have written a program which can play up to 99 words and sentences as reaction of the pressing of three buttons. This is thought as and aid for people who can't speak but are able to press a button. -andreas |
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| matherp Guru Joined: 11/12/2012 Location: United KingdomPosts: 8605 |
Before I set up to test - is it mono? If so this is the issue as flac playback doesn't support mono so will play at double speed |
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| andreas Senior Member Joined: 07/12/2020 Location: GermanyPosts: 187 |
Yes - I used a Logitech microphone and when I remember correctly I switched to mono. Thanks's for answer. Now I'm using wav and that works fine. -andreas |
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| lizby Guru Joined: 17/05/2016 Location: United StatesPosts: 3027 |
Is the 1.3" SSD1306 128x64 I2C OLED the largest I2C display supported for the Picomite? PicoMite, Armmite F4, SensorKits, MMBasic Hardware, Games, etc. on fruitoftheshed |
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phil99 Guru Joined: 11/02/2018 Location: AustraliaPosts: 1813 |
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Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 5771 |
I don't think there are that many I2C displays around that are much bigger anyway. It's not really fast enough for graphic displays, but useful if you are very short of pins. I have some converter boards that attach to the back of single and multiline LCD text displays to make them I2C, which can be useful as they eat up IO pins. Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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| Volhout Guru Joined: 05/03/2018 Location: NetherlandsPosts: 3589 |
But that is really slow.......... You have to send every nibble, and every transition in control lines, as separate I2C commands. That is about 6x slower than can be achived by a normal I2C LCD. But these are the character based LCD's I guess. So the data is only few characters anyway. Not something like RGB pixels... Volhout PicomiteVGA PETSCII ROBOTS |
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| lizby Guru Joined: 17/05/2016 Location: United StatesPosts: 3027 |
I don't really very much care about "slow". If you need fast updating, you just sacrifice the pins and use SPI (or a full parallel interface LCD). For many uses, I would be happy with a full color 320x240 I2C LCD, and if it could update once a second that would be fine (even slower would be satisfactory for many purposes, as often only part of a screen must be updated). But I haven't seen that such a beast exists. PicoMite, Armmite F4, SensorKits, MMBasic Hardware, Games, etc. on fruitoftheshed |
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| Volhout Guru Joined: 05/03/2018 Location: NetherlandsPosts: 3589 |
Hi Lizby, 320x240 pixels RBG x24 bits = 1843200 bits. With 400kHz I2C (400k bits) maximum efficient (no waiting) a screen update takes 4.6 seconds. May be a bit slow... PicomiteVGA PETSCII ROBOTS |
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| Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 5771 |
If it's shortage of pins that makes you want to use I2C then I suggest a second processor to handle a SPI or parallel display "intelligently". That way you can send primitives via I2C and leave the "GPU" to do things like drawing boxes, font handling etc. It would be a good use for one of the "baby" RP2040 boards (running MMBasic, of course). It would just be a I2C slave. It could even pull complex images off it's own SD card - something that would take ages over I2C would happen very fast. Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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