[3pleL]

Hello everybody,
due to a shift in priorities, my contribution to this awesome project is on hold.
But if anybody would like to continue this journey of repurposing the Ender 3 boards – feel free to take a look at the work done so far in my fork:)

[3pleL]

Hi everyboody,
I just verified the hardware, serial messages are basically sent.

From my serial debugging so far, I’ve found out that there seems to be an issue with serial messages not being sent anymore.
This happens after setting up the servo in function motor_setup(). So I suspect the servo library and it’s hardware timers may be colliding with the UART or something along this line.

Unfortunately I don’t have a real hardware debugger to investigate this properly.
Maybe somebody else has experienced something alike?
Should I open a issue on that topic so that someone with the required hardware could investigate this further?

As an alternative temporary workaround: I disabled servos by setting NUM_SERVOS to 0 (in polargraph.h because my build uses this machine style).

Now I get the expected messages and the periodic parser newline char as it should be.

That’s it for today – next time I’ll connect the board to the pc software and maybe even connect the motors.

Greetings,
3pleL

[3pleL]

Hello everybody,

just a quick info. I haven’t made much progress, but got the board flashed with the bootloader.

After uploading the compiled firmware, unfortunately I don’t get any output on the serial monitor. I don’t know why, but I’ll investigate this as far as it is possible without a proper debugger (obvious things checked already – right com port, baudrate of 57600).

Greetings,
3pleL

[3pleL]

Thanks for the invite – I just joined there:)

Anyway I made some slight progress – the firmware now compiles.

The issue might have something to do with the selected toolchain.
As pointed here avr-gcc v7.2.0 throws a similar error.
So I changed the platform to an older version platform = [email protected] and it compiles just fine.

So my next steps will be:
– check what most recent version of the platform will work
– get the hardware programmed with the bootloader and the software for testing
I hope to get around doing this next week.

Anyway I’ll keep this thread up to date with my progress.

Greetings,
3pleL

[3pleL]

Hi Dan,
thanks for your reply!
Yes I’m using vs code for compiling.
The build console output is as seen below (maybe this gives more substantial information):

Processing ENDER3 (platform: atmelavr; board: ATmega1284P; framework: arduino)
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------Verbose mode can be enabled via <code>-v, --verbose</code> option
CONFIGURATION: https://docs.platformio.org/page/boards/atmelavr/ATmega1284P.html
PLATFORM: Atmel AVR (3.2.0) > ATmega1284P
HARDWARE: ATMEGA1284P 16MHz, 16KB RAM, 128KB Flash
DEBUG: Current (simavr) On-board (simavr)
PACKAGES:
 - framework-arduino-avr-mightycore 2.1.1
 - toolchain-atmelavr 1.70300.191015 (7.3.0)
LDF: Library Dependency Finder -> http://bit.ly/configure-pio-ldf
LDF Modes: Finder ~ chain, Compatibility ~ soft
Found 11 compatible libraries
Scanning dependencies...
Dependency Graph
|-- <SPI> 1.0
|-- <EEPROM> 2.0
|-- <SoftwareSerial> 1.0
|-- <Wire> 1.0
|-- <Servo (MightyCore)> 1.1.1
Building in release mode
Linking .pio\build\ENDER3\firmware.elf
src\motor.cpp: In function '__vector_13':
src\motor.cpp:679:25: error: variable 'limit' with dynamic initialization put into program memory area
   static const uint32_t limit[] PROGMEM = {
                         ^
lto-wrapper.exe: fatal error: avr-g++ returned 1 exit status
compilation terminated.
c:/users/linux/.platformio/packages/toolchain-atmelavr/bin/../lib/gcc/avr/7.3.0/../../../../avr/bin/ld.exe: error: lto-wrapper failed
collect2.exe: error: ld returned 1 exit status
*** [.pio\build\ENDER3\firmware.elf] Error 1

I’m using vs code version:

Version: 1.53.2 (user setup)
Commit: 622cb03f7e070a9670c94bae1a45d78d7181fbd4
Date: 2021-02-11T11:48:04.245Z
Electron: 11.2.1
Chrome: 87.0.4280.141
Node.js: 12.18.3
V8: 8.7.220.31-electron.0
OS: Windows_NT x64 10.0.19041

[3pleL]

Hi everybody,

since I haven’t seen anyone else try to bring purpose to an old ender 3 mainboard via the makelangelo firmware, I’d like to reactivate this thread.

I’ve gotten so far as to compile all default projects. Then I created the ender 3 board file, entry in configure.h and the required env in platformio.ini.
(Btw. the pin configuration is nearly exactly the same as in sanguinolulu.)

All sources are currently available in the feature branch “feature/ender3” in my fork of this project.

Unfortuantely I get a linker error similar to the one above but a little different:

linking .pio\build\ENDER3\firmware.elf
src\motor.cpp: In function '__vector_13':
src\motor.cpp:695:25: error: variable 'limit' with dynamic initialization put into program memory area
   static const uint32_t limit[] PROGMEM = {
                         ^
lto-wrapper.exe: fatal error: avr-g++ returned 1 exit status
compilation terminated.

(of course I googled that error and found some results which were not helpful for me-.-)
Is there anybody who could shed some light on this?

Greetings 3pleL

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