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I'm sure that can be done but can't say I've seen an example. You only have 2MB flash on a Pico though other RP2040 boards do have more. You would be sharing flash with your code.

@@DrJonEA Thank for this reply. I went back and read the "Red Book" and saw that the only flash "files" you can see on the RPI-RP2 Drive when PICO is attached to USB are the INFO_UF2.TXT and INDEX.HTM - and then only during BOOTSEL mode. I was hoping users could drop a xxx.json file there to configure my apps. Now I'm going to see if I can emulate USB-Flash in my app. I'd REALLY like have my apps have a config file.

You would have to write the interface and provide a MSC device interface to the host computer. Om Bootsel mode you are not really seeing files on the device. It is simply a mechanism for flashing code to the Pico.

Thank you. I agree you have to treat them as part of the fun.

Hi mate. The link in the description should fire the coupon. Or the coupon code is 1B88F3BA9F1BAAA6DEB3. Prices vary by market on Udemy but this should be around $18 or $19 I think.

@DrJonEA link URL didn't look to be anything special and when I clicked on it, it showed $45. Admittedly I didn't follow through and add it to cart. I'll definitely take the course for under $20. There's just not much out there on providing web services using Pico SDK or detailing IP services using the LW library that comes with the SDK.

Thank you and appreciate it. I'm never sure I've set things up right, so always open to a conversation. This course took quite a bit of research. Though I have had some webservices running for a few years, when I widen for course i find quite a bit to research. And little out there to work from.

@@DrJonEA If you hadn't made any changes to the link, I suspect the issue was the browser I was using on my tablet to access TH-cam i was able to subscribe to the course at the discount rate. I was looking more towards having the Pico provide web services rather than it be a web client so one can browse to the Pico and get dynamic information in it and control it, with the development done on C/C++ SDK. Most microcontroller HTTP/HTTP service libraries provide interrupt callbacks when someone connects to the microcontroller, but the LWIP doesn't seem to operate that way. But I am sure I'll get valuable information from the course.

Thank you. When I started working on the course my intention was to do both client and service in one course. But when we got to 6 hours just on client I decided this was too big to do both. I am considering writting a part 2 course to look at server. There are again several approaches to this. The LWIP HTTP Server has quite a unique interface which requires you work with tempaltes. It can do web services though.

Thanks. I use Python a lot though mainly on the server of Linux host. On a microcontroller with Python can be limiting. Also MicroROS does not support Python right now.

Glad you liked it. Thank you.

Thank you. The UF2 is just one of the forms of the binary build by the compiler. The Pico SDK Toolchain builds both a UF2 and ELF binary which can be used by different flashing strategies. If you need some help with the setup of the toolchain and build environment for Pico projects I've got a course on Udemy that goes through this. It's about 3 hours in today length with lots of options depending on your desktop environment. www.udemy.com/course/introduction-to-c-development-environment-for-raspberry-pico/?referralCode=875319E04F95C9EC3414

There's also a Getting Started with Pico pdf among the official the Raspberry Pi Pico documentation that shows you how to set up a build system, how to use cmake, how to use SWD to debug the Pico and how to put all of that into a VSCode setup. Aside from setting up the debugger (which is not really essential to get this working), following the documentation had me up and running in about 10 minutes.

Glad you where up and running so quickly. Lots of people find this a little more challenging.

Hi Danny, There should be subtitles on all my videos. They are auto generated and then I try to correct. They are not perfect but should be there. Sorry you could not find them.

Great tip! Thank you for sharing.

Thank you! Cheers!

Glad you enjoyed it. Not sure I understand the serial characters point...

Thanks

Thank you.

Yes C++ is fully supported on the Pico. I've also been a Java developer in the past and C++ let you keep OO design and polymorphism. C/C++ give you more control over memory management, which was always a challenge in Java.

I agree. I've seen a few that do have it but they double the cost. I guess use case is really for robotics which is a small area but growing.

Your welcome. Remember to subscribe and keep watching

Opps, sorry about that. It does now.

Solid!

That interesting thank you for sharing. Yes the rule I explain was just for a RPI5.

Hi. Sorry to hear that. Sounds very annoying and difficult to diagnose. I will admit I have not run up DDD for a few months, while I work on other projects. I have though run my MicroROS bridge code on another project quite successfully and not seen this issue. So sorry I can't point my finger at what would be causing this. Perhaps drop back to the MicroROS Pico example and check that works ok in your environment. Then roll forward into my extensions of that. Let me know how it goes. Jon

Thanks for the compliment. I've not seen much out there on custom msgs. Mainly picked up on this for Pico from the forums.

Added to readme on the repo.

Thank you. I did a video showing over the air updates of a Pico-W in case you haven't seen it: th-cam.com/video/Go58qyJpz8Q/w-d-xo.html

Thanks

Thank you. I am glad you enjoyed it. I'm still learning and its fun. Good luck with the robots.

Thank you for watching and the feedback. Greatly appreciated

Sorry about that. yes ROS2 Robot Operating System. Target for this was to help me with MicroROS. Lots more videos on MicroROS on the channel.

Thank you for the suggestion. GTest and CPPUnit get used together quite a bit. Let me see if I do something on this.

Thanks Thomas, great to have you here. We are all learning together.

Thank you. Always great to get feedback and encouragement.

Yes absolutely does. The issue here is that flash is so fundamental to the operation of both cores.

@@DrJonEA thanks! i'm signing up for your udemy course. i'm way behind on Cmakelists.txt. i'm building my own library for Pico and am at a loss since (back in the day) one delivered a lib.a file and a folder of .h files. The idea of delivering all the source code and recompiling it every time is a bit foreign to me. Thanks for your work. I'm subscribed. Continued Success!

Thank you for signing up. CMake is building "lib.a" in the background, but managing when to update them.

There are a few cases available for this on Thingiverse. I've not seen any commercial ones yet though. Example: www.thingiverse.com/thing:6457430

I hope we don't have too long to wait for the CM5.

Thank you. Appreciate feedback that it is useful. New format and all an experiment

No my example as published here does not check the Servers certificate. That I think is fairly straightforward with wolfssl. Personally I have found wolfssl well documented which helps speed development.

@@DrJonEA cool, thanks. I will give it a try then

There are quite a few VGA project out there. Not tried one yet myself. I am also interested in a smaller Pico W. That would be very cool.

Thanks Nick, You are right and I got that completely wrong. Wishful thinking on my part:-)

@@DrJonEA Ha would be nice to have 4 USB 3 ports but the PCIe interface more than makes up for it. I also noticed you seem to be getting 1/2 the throughput I'm seeing on my SSD drive. Have you upgraded the PCIe interface to 3.0? Simply add the following to config.txt and reboot dtparam=pciex1 dtparam=pciex1_gen=3 Would be interesting to see drive performance afterwards

That's interesting Nick. No I stuck to pciex1_gen=2 as 3 was marked as experimental. I will give it a go.

Some are on Udemy for business including the Introduction and FreeRTOS course. The others are not yet. Udemy chooses when to include courses within the Udemy for Business service.

​@@DrJonEA Actually the business plan is targeted for 2-20 in one's organization, and still only has 11K+ top courses, which is the same as shown for personal plan. Only the Enterprise plan intended for more than 20+ users show that it has 25K+ courses available. With courses averaging $90 per course that might not be in the monthly/yearly subscription, that's rather steep! But then there's only 6 of yours and they all seem to be currently priced at about $15 with the higher prices crossed out.

Thanks for clarifying.

Your are quite right you can provide HTTP using just LWIP as client and server. You need to manage the network connection using interrupts or polling through. By using a RTOS LWIP can provide a Posix style socket. It also takes away the need to poll the network.

Thanks for the feedback. Sorry I did not cover the reading of the flash into memory before writing the update clearly. That only needs to be the bit of flash used for NVS, not the whole thing. Your right this library and the OTA library are not compatible right now. I would like to create a combine version at some point and yes using that unused space is a good idea. I'm working on authoring a Udemy course on Pico-W web services are the moment (both client and server, though they may split into separate courses).

Of course you can do it that way. Jakob's library doesn't handle the transfer of the BIN over the network, so you are free to do as you please. LWIP does include a webserver with post capability you could use. Though it isn't an easy library to use. There are some other embedded http server out there too as open source projects. I'd probably recommend looking at mongoose.ws/.

Thank you. I try.

That's fabulous Ivan. Do let me know how you get on. Goog luck.

Glad I could help. You could output messages from SWD on Pico. It's called semihosting but is currently marked as experimental in the SDK.

Thank you. You are not the only one to "re-discover" as you go. I do too. Things also change around us with new versions, creating stumbles in our progress.

Yes I try to get the idea across in 30 seconds. Its hard work.

Glad it was helpful!

Of course, provided I can find them.

STL now added.

Hi Martin, great questions. On your second point I agree that importing pico_sdk_import from the sdk is better. This is me being a little lazy. Something I will look at changing. On the first point about where should libraries be. Well I do think they should be in each projects because otherwise you create a huge task for yourself upgrading everything to a new version at once, or accept potentially breaking your builds. Certainly making your build unreproducible because libraries have moved to newer versions. I use git submodules for libraries so I am holding a reference to them rather than copying others code.

Visual Studio Code. Yes not Microsofts product. Though to be honest you can use any IDE to edit the C code. I use Eclipse apart from when filming when I find VSCode is clearer.

Glad you found it useful. You do have to be structured with C/C++ but it isn't as scary as it is suggested to be. So powerful though on a microcontroller.