Thinking in advance, it would be desirable to have the possibility to modify these parameters in the future: this action shall not necessitate to program again the MCU since parameters can be modified via a serial communication.

I have been able to obtain the same declaring a const variable and modifing the linker file. Probably this is due to the const declaration, but, still it is strange to me that the variable cannot be modified since it is placed in the emulated EEPROM. On the opposite, declaring and initiaiting a non const variable seems impossible: the MCU gets stuck in DummyHandler even before entering main.

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But obviously this is not useful since I need to have default parameters when programming the MCU. Think about it - you have a variable located in flash and you try to initialise it which means a write to the flash when a write is not enabled - you get a bus fault.

I'd suggest you define a structure of the data you want to store, create a ram instance if it. When your code runs, memcpy from flash to your structure. To write to the flash, write a function that copies your structure to flash. Thanks Kartman for your reply. Anyway, still I don't understand: why can I declare and initialize a const variable which will be saved in flash, whereas it is impossible to initialize a non-const variable in flash?

The const variable is copied to flash during programming: is it impossible to initialize a non-const variable by copying the related value during the programming phase? The const initialization would be perfect but doesn't allow me to modify the values when the program is executed.

The compiler puts const variables into flash. Non const variables with initialisers are loaded as part of a the C startup code, so trying to write to flash will cause an exception. On startup:. Const vars with the ARM are in flash. I know that declaring something const implies the variable shall not be modified.

But, if that variable is located in the emulated eeprom area, why am I unable to modify it? I expected to be able to do that since in the end this would reduce to a simple write to eeprom. But, as I said in my first post, nothing happens, and the nvmctrl flags are all correct, and the area is not locked.

Skip to main content. How to initialize a variable into the eeprom? Log in or register to post comments. Go To Last Post. Level: New Member. Posts: 3 View posts. Posted by oliviera9 : Wed. Jun 1, - PM. Fivestar widget 1 2 3 4 5. Now, it seems it is impossible to have these two working at the same time. Have you ever encountered this behavior? Thanks in advance. Last Edited: Wed. Posts: View posts. Posted by Kartman : Wed. Log in or register to post comments Top. Posted by oliviera9 : Sun.

Jun 5, - AM Reply to 2. Posted by Kartman : Sun.GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. If nothing happens, download GitHub Desktop and try again. If nothing happens, download Xcode and try again. If nothing happens, download the GitHub extension for Visual Studio and try again.

Additional documentation can be found at the Marlin Home Page. Please let us know if Marlin misbehaves in any way. Volunteers are standing by! Marlin 2. Read about Marlin's decision to use a "Hardware Abstraction Layer" below. Download earlier versions of Marlin on the Releases page. To build Marlin 2. Detailed build and install instructions are posted at:. For best results getting help with configuration and troubleshooting, please use the following resources:.

Marlin is published under the GPL license because we believe in open development. The GPL comes with both rights and obligations. Whether you use Marlin firmware as the driver for your open or closed-source product, you must keep Marlin open, and you must provide your compatible Marlin source code to end users upon request.

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The most straightforward way to comply with the Marlin license is to make a fork of Marlin on Github, perform your modifications, and direct users to your modified fork. While we can't prevent the use of this code in products 3D printers, CNC, etc. Skip to content. Dismiss Join GitHub today GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together.

BLtouch on Ender 3

Sign up. Optimized firmware for RepRap 3D printers based on the Arduino platform. Branch: 2. Find file.

ender 3 initialize eeprom

Sign in Sign up. Go back. Launching Xcode If nothing happens, download Xcode and try again. Latest commit. Latest commit dec Apr 1, Building Marlin 2. Submit New Features to the devJoin us now! Forgot Your Password? Forgot your Username? Haven't received registration validation E-mail? User Control Panel Log out. Forums Posts Latest Posts.

View More. Recent Blog Posts. Unread PMs. Forum Themes Elegant Mobile. Essentials Only Full Version. Super Member. I know by C standard all variables must be initialized to 0. Attribute fillupper makes no sense and there should be some other.

There is a way to do this using linker script but this is not practical. Using noload is also not good. Even at power down or reset. How do you know that the variables holds valid information then? That they have been written at least once? You don't unless you have some mechanism to validate the memory. This could be as simple as a signature, a checksum or CRC. This can often be done one byte at a time or a block of a specific size at a time or the whole memory at once. And that's the problem.

I don't know what the precise c30 mantra is to declare them with a persistent attribute, but I bet there is a fairly simple way of doing that.This will give you the latest features of Marlin like mesh bed levelling and safety features.

Did you use this instructable in your classroom? Add a Teacher Note to share how you incorporated it into your lesson. Connect the USBasp programmer to the 6pin header making sure you have the connections correct. This is used to burn the bootloader. Install the libusb drivers using Zadig. This connection is used to upload the Marlin firmware. Windows should automatically find the drivers. After installation, you should find 2 additional devices in device manager.

Marlin is also preconfigure for the Creality 3D printers. Download and unzip to your desktop.

ender 3 initialize eeprom

This process should be very quick. This will compile the sketch to make sure there isn't any errors.

How To Calibrate the Extruder Steps (Ender-3 / Ender-5 / CR-10)

Then put the cover. Cross your fingers and turn on the 3D printer. That's it, you now have the latest and greatest version of Marlin with mesh bed leveling and of course all the safety features enabled by the TH3D firmware package. By f1racer Follow. More by the author:.

Youtube video:. Add Teacher Note. There are 3 screws that hold the cover in place. Remove them to access the PCB. Also to enable mesh bed levelling, uncomment it for that feature as well. If successful, choose upload to finally flash your 3D printer with Marlin. Next thing is to reset the settings for the firmware, by choosing "Initialize EEPROM" That's it, you now have the latest and greatest version of Marlin with mesh bed leveling and of course all the safety features enabled by the TH3D firmware package.

Video with more information and details. Did you make this project? Share it with us! I Made It!I just received an Ender 5 Pro today which has the V1. The c7 capacitor has already been removed per antlabs guidance. I have an official BLtouch v3. When the unit powers on the BLtouch performs a self test, stows and stays red with blue led lit. I can go into the BLtouch menu on the machine and perform a self test does the same thing. Stow works Deploy works. Step 1 comes back as triggered because the bltouch it always stowed and glowing red Steps 2 and 3 work as described and the unit deploys Step 5 doesn't seem to do anything.

However i can run a test the following command per antlabs v1. M P0 S Step 7 does nothing. It just stays stowed and glowing red. I originally had this line of firmware uncommitted, but then i spotted the issue and commented it out and reflashed it.

So then I was concerned that maybe this BLtouch is stuck in 5v logic mode. So I followed the antlab guide using terminal commands to command it back into 3. However, I don't know how to confirm if this stuck or not. It seems that they are suggesting the v1. Is that correct? I am a little unsure about trying it due to Danger warning in the comment.

Edit: NVM What was your fix? I have the same issues on my CR Mini with a Creality 1. The BL Touch sometimes requires physical modification of your board.

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Be careful doing it as you can permanently damage your board if done wrong. I've seen the "remove C7 capacitor" info in the BLTouch 3. I've got through the 'test' procedure post above and when I get to step 5, putting it in test mode, and my blue LED remains on.

I'm not sure what "adjustment' is necessary. I know there's an issue as self test passes fine, but when doing actual homing, it will set Z but then starts blinking.

Creality Ender 3 Pro - 3D printer - Unbox & Setup

Wondering if the Z Axis limit switch needs to be disconnected. Does the Unified firmware allow for both the probe and the switch to be active? I have the probe and switch wires "Y'd" together at the header on the board. Nowhere do any of the guides say to keep the endstop switch in place. That would have been a very important detail to know when describing your issue. You only want the sensor connected. Do not have both connected. It will not work. Well, it seems to be working ok as I've run several bed probes and long prints since my last post.

This site is best viewed in a modern browser with JavaScript enabled. Something went wrong while trying to load the full version of this site. Try hard-refreshing this page to fix the error.In my humble opinion, one of the most useful features of Marlin is the ability to save a bunch of settings to what is essentially a non-volatile area memory that exists on the Arduino board, which, of course, is the basis for nearly all the current generation of 3D printer controllers.

This, of course, is a whole lot faster, easier and more productive than making all these changes within the Configuration. The good news is that it is quite simple to activate them. Simply open up your Configuration. Now save your changes and re-flash Marlin. You can verify this via your LCD controller by entering the menu, then selecting Control. Inside the Control menu, you should see two new options:. Restore failsafe will overwrite whatever is in SRAM with whatever values are specified in the Configuration.

Back in your Configuration. As an added bonus, the M command will also echo all of the settings stored in EEPROM, and as a nice extra touch, it also tells you what M-codes you would need to use in order to manually change any of the settings. Pretty cool, if you ask me! I really enjoy your videos, which are both professional and to the point.

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I do have a couple of questions regarding this topic and auto-leveling. Is it possible to read the changes made on the LCD back to the computer? I have one issue tho. For each probe point, the servo will retract the probe without raizing the Z. It will move to a probe point, probe the point, retract and then raize Z to move to the next point. Is it a way to adjust this? Life and stuff… Anyway, unfortunately, no, there is no way in the current generation Arduino boards to offload any data from the firmware back to a computer.

Hey Zennmaster, For those of us who are new to the 3D printing world, could you explain where to find and how to open the configuration. You can use these HTML tags. Name required. Email will not be published required. Home About this blog: Contact Us. Random Things Making Stuff! Robots Zennbot 1 — The Robomower! Zennbot Zero — The Robodozer! Tech Stuff Android Downloads! There is also a third option, which has been there all along, which is related to the other two: Restore failsafe will overwrite whatever is in SRAM with whatever values are specified in the Configuration.

My other sites. Zennmaster's world… The world according to me….GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together.

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community. Already on GitHub? Sign in to your account. After flashing Marlin bugfix A few people have asked this question. It's not a problem with the uploader, but is a behaviour you will see if any config changes have modified the amount of EEPROM storage that Marlin requires.

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It could be that you have made a change to your settings, or some new feature has been enabled by default and now more storage is needed. Or, it could be a bug in Marlin - see this issue for a way to figure out what's going on. Ah, there's an option in OctoPrint not to disconnect on Error - that's going to help! Also thanks for the other info. Skip to content. Dismiss Join GitHub today GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together.

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