Build error in custom platform

berg · November 29, 2022, 7:42pm

I created a clone of platform-atmelsam and modified it to work with the Omzlo NoCAN CANZERO boards. I used the guide “Custom Development Platforms”.

The CANZERO board is essentially an Arduino MKR ZERO clone, but with a custom CAN-based network. The network is managed by a Raspberry-Pi HAT. The nocanc daemon runs on the Raspberry and exposes an API to the network.

I tried to make all the necessary changes, but now platform.io gives an error when I try to build a simple blink program.

My guess is that the error comes from the fact that I cloned platform-atmelsam and there is quite a lot of code in main.py and platform.py that I do not really understand.

The platform code can be found at GitHub - bergernetch/platform-nocan: platform.io OMZLO nocan platform

Blink.cpp

/*
 * Blink
 * Turns on an LED on for one second,
 * then off for one second, repeatedly.
 */

#include <Arduino.h>

void setup()
{
  // initialize LED digital pin as an output.
  pinMode(LED_BUILTIN, OUTPUT);
}

void loop()
{
  // turn the LED on (HIGH is the voltage level)
  digitalWrite(LED_BUILTIN, HIGH);
  // wait for a second
  delay(1000);
  // turn the LED off by making the voltage LOW
  digitalWrite(LED_BUILTIN, LOW);
   // wait for a second
  delay(200);
}

Build output

xecuting task: platformio run --environment canzero 

Warning! Ignore unknown configuration option `node_id` in section [env:canzero]
Processing canzero (platform: nocan; framework: arduino; board: nocan_canzero)
------------------------------------------------------------------------------------------------------------------------------------------
Verbose mode can be enabled via `-v, --verbose` option
CONFIGURATION: https://docs.platformio.org/page/boards/nocan/nocan_canzero.html
PLATFORM: OMZLO NoCAN (1.0.0+sha.7b7c414) > Omzlo CANZERO
HARDWARE: SAMD21G18A 48MHz, 32KB RAM, 256KB Flash
DEBUG: Current (atmel-ice) External (atmel-ice, blackmagic, jlink)
PACKAGES: 
 - framework-arduino-samd @ 1.8.13 
 - framework-cmsis @ 1.40500.0 (4.5.0) 
 - framework-cmsis-atmel @ 1.2.2 
 - toolchain-gccarmnoneeabi @ 1.70201.0 (7.2.1)
LDF: Library Dependency Finder -> https://bit.ly/configure-pio-ldf
LDF Modes: Finder ~ chain, Compatibility ~ soft
Found 12 compatible libraries
Scanning dependencies...
No dependencies
Building in release mode
Compiling .pio/build/canzero/src/Blink.cpp.o
Compiling .pio/build/canzero/FrameworkArduino/Reset.cpp.o
Compiling .pio/build/canzero/FrameworkArduino/SERCOM.cpp.o
Compiling .pio/build/canzero/FrameworkArduino/Tone.cpp.o
Compiling .pio/build/canzero/FrameworkArduino/USB/CDC.cpp.o
Compiling .pio/build/canzero/FrameworkArduino/USB/USBCore.cpp.o
Compiling .pio/build/canzero/FrameworkArduino/USB/samd21_host.c.o
Compiling .pio/build/canzero/FrameworkArduino/Uart.cpp.o
In file included from src/Blink.cpp:7:0:
/Users/dani/.platformio/packages/framework-arduino-samd/cores/arduino/Arduino.h:51:10: fatal error: variant.h: No such file or directory

*****************************************************************
* Looking for variant.h dependency? Check our library registry!
*
* CLI  > platformio lib search "header:variant.h"
* Web  > https://registry.platformio.org/search?q=header:variant.h
*
*****************************************************************

 #include "variant.h"
          ^~~~~~~~~~~
compilation terminated.
*** [.pio/build/canzero/src/Blink.cpp.o] Error 1
In file included from /Users/dani/.platformio/packages/framework-arduino-samd/cores/arduino/Reset.cpp:19:0:
/Users/dani/.platformio/packages/framework-arduino-samd/cores/arduino/Arduino.h:51:10: fatal error: variant.h: No such file or directory

*****************************************************************
* Looking for variant.h dependency? Check our library registry!
*
* CLI  > platformio lib search "header:variant.h"
* Web  > https://registry.platformio.org/search?q=header:variant.h
*
*****************************************************************

 #include "variant.h"
          ^~~~~~~~~~~
compilation terminated.
*** [.pio/build/canzero/FrameworkArduino/Reset.cpp.o] Error 1
In file included from /Users/dani/.platformio/packages/framework-arduino-samd/cores/arduino/SERCOM.cpp:19:0:
/Users/dani/.platformio/packages/framework-arduino-samd/cores/arduino/Arduino.h:51:10: fatal error: variant.h: No such file or directory

*****************************************************************
* Looking for variant.h dependency? Check our library registry!
*
* CLI  > platformio lib search "header:variant.h"
* Web  > https://registry.platformio.org/search?q=header:variant.h
*
*****************************************************************

 #include "variant.h"
          ^~~~~~~~~~~
compilation terminated.
In file included from /Users/dani/.platformio/packages/framework-arduino-samd/cores/arduino/Tone.cpp:19:0:
/Users/dani/.platformio/packages/framework-arduino-samd/cores/arduino/Arduino.h:51:10: fatal error: variant.h: No such file or directory

*****************************************************************
* Looking for variant.h dependency? Check our library registry!
*
* CLI  > platformio lib search "header:variant.h"
* Web  > https://registry.platformio.org/search?q=header:variant.h
*
*****************************************************************

 #include "variant.h"
          ^~~~~~~~~~~
compilation terminated.
*** [.pio/build/canzero/FrameworkArduino/Tone.cpp.o] Error 1
*** [.pio/build/canzero/FrameworkArduino/SERCOM.cpp.o] Error 1
In file included from /Users/dani/.platformio/packages/framework-arduino-samd/cores/arduino/USB/CDC.cpp:19:0:
/Users/dani/.platformio/packages/framework-arduino-samd/cores/arduino/Arduino.h:51:10: fatal error: variant.h: No such file or directory

*****************************************************************
* Looking for variant.h dependency? Check our library registry!
*
* CLI  > platformio lib search "header:variant.h"
* Web  > https://registry.platformio.org/search?q=header:variant.h
*
*****************************************************************

 #include "variant.h"
          ^~~~~~~~~~~
compilation terminated.
*** [.pio/build/canzero/FrameworkArduino/USB/CDC.cpp.o] Error 1
In file included from /Users/dani/.platformio/packages/framework-arduino-samd/cores/arduino/USB/USBCore.cpp:21:0:
/Users/dani/.platformio/packages/framework-arduino-samd/cores/arduino/Arduino.h:51:10: fatal error: variant.h: No such file or directory

*****************************************************************
* Looking for variant.h dependency? Check our library registry!
*
* CLI  > platformio lib search "header:variant.h"
* Web  > https://registry.platformio.org/search?q=header:variant.h
*
*****************************************************************

 #include "variant.h"
          ^~~~~~~~~~~
compilation terminated.
*** [.pio/build/canzero/FrameworkArduino/USB/USBCore.cpp.o] Error 1
In file included from /Users/dani/.platformio/packages/framework-arduino-samd/cores/arduino/USB/samd21_host.c:24:0:
/Users/dani/.platformio/packages/framework-arduino-samd/cores/arduino/Arduino.h:51:10: fatal error: variant.h: No such file or directory

*****************************************************************
* Looking for variant.h dependency? Check our library registry!
*
* CLI  > platformio lib search "header:variant.h"
* Web  > https://registry.platformio.org/search?q=header:variant.h
*
*****************************************************************

 #include "variant.h"
          ^~~~~~~~~~~
compilation terminated.
*** [.pio/build/canzero/FrameworkArduino/USB/samd21_host.c.o] Error 1
In file included from /Users/dani/.platformio/packages/framework-arduino-samd/cores/arduino/Uart.cpp:19:0:
/Users/dani/.platformio/packages/framework-arduino-samd/cores/arduino/Arduino.h:51:10: fatal error: variant.h: No such file or directory

*****************************************************************
* Looking for variant.h dependency? Check our library registry!
*
* CLI  > platformio lib search "header:variant.h"
* Web  > https://registry.platformio.org/search?q=header:variant.h
*
*****************************************************************

 #include "variant.h"
          ^~~~~~~~~~~
compilation terminated.
*** [.pio/build/canzero/FrameworkArduino/Uart.cpp.o] Error 1
======================================================= [FAILED] Took 0.68 seconds =======================================================

Environment    Status    Duration
-------------  --------  ------------
canzero        FAILED    00:00:00.677

maxgerhardt · November 29, 2022, 7:54pm

You declare your board to have the Arduino variant canzero

github.com

bergernetch/platform-nocan/blob/develop/boards/nocan_canzero.json#L6-L22


      
          "core": "arduino",
          "cpu": "cortex-m0plus",
          "extra_flags": "-DARDUINO_SAMD_MKRZERO -D__SAMD21G18A__ -DUSE_ARDUINO_MKR_PIN_LAYOUT",
          "f_cpu": "48000000L",
          "hwids": [
            [
              "0x2341",
              "0x804F"
            ],
            [
              "0x2341",
              "0x004F"
            ]
          ],
          "mcu": "samd21g18a",
          "usb_product": "Omzlo CANZERO",
          "variant": "mkrzero"

and this code will select the used framework package as framework-arduino-samd

github.com

bergernetch/platform-nocan/blob/63fd794d76043a1d03bff2d1692c88dbdcc42a25/platform.py#L56-L62


      
          if "arduino" in variables.get("pioframework", []):
              framework_package = "framework-arduino-%s" % (
                  "sam" if board.get("build.mcu", "").startswith("at91") else "samd"
              )
          
          
    if build_core != "arduino":
                  framework_package += "-" + build_core

which it will source from the registry.

github.com

bergernetch/platform-nocan/blob/63fd794d76043a1d03bff2d1692c88dbdcc42a25/platform.json#L52-L57


      
          "framework-arduino-samd": {
            "type": "framework",
            "optional": true,
            "owner": "platformio",
            "version": "~1.8.13"
          },

which is just the PIO packaged version of

yet there is no folder with such a name in the variants folder of that Arduino core in sight.

If you chose to specify a custom Arduino variant for your board, you must also fork the Arduino core, add the needed variant folder with the needed pinmapping header file and other files.

berg · November 29, 2022, 8:11pm

Thank you. I will use mkrzero as variant for now, as this board is pin-compatible and has the same mcu.