nimforum mirror - Arduino with Nim

mantielero (orginal) [2021-04-11T16:52:43+02:00] view original

I am trying to use @zevv's nim-arduino library without the IDE.

I am using the following code heartbeat.nim:

{.passC:"-I/usr/share/arduino/hardware/archlinux-arduino/avr/cores/arduino/".}
{.passC:"-I/usr/avr/include/".}
{.passC:"-I/usr/share/arduino/hardware/archlinux-arduino/avr/variants/micro/".}

import arduino

setup:
  pinMode LED_BUILTIN, OUTPUT

loop:
  digitalWrite LED_BUILTIN, HIGH
  delay 500
  digitalWrite LED_BUILTIN, LOW
  delay 3000

Everthing compiles and the binary gets uploaded to the board (Arduino Nano; atmega328p) successfully. But the led doesn't blink:


nim c -d:danger --os:any heartbeat
avr-objcopy -O ihex -R .eeprom heartbeat heartbeat.hex
avrdude  -q -patmega328p -carduino  -P/dev/ttyUSB0 -b57600 -D -Uflash:w:heartbeat.hex

If I do the same using .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(500);
  // turn the LED off by making the voltage LOW
  digitalWrite(LED_BUILTIN, LOW);
   // wait for a second
  delay(3000);
}

This works.

Any clue about what can I be missing?

Araq (orginal) [2021-04-12T08:40:14+02:00] view original

Check if the constants LED_BUILTIN, HIGH etc have the right values for your board.

PMunch (orginal) [2021-04-12T12:07:33+02:00] view original

HIGH, LOW, INPUT, OUTPUT are the same for pretty much every board. But it's very likely that LED_BUILTIN isn't correct for your board. Why he hasn't just importc-ed this I'm not quite sure, that would make it load the same one that Arduino would use (if you've passed the right flags to the compiler).

mantielero (orginal) [2021-04-12T18:09:13+02:00] view original

I tried with several different values instead of LED_BUILTIN, but I think the value is right.

Right now I am using the following nim.cfg:


avr.any.gcc.path = "/usr/bin"
avr.any.gcc.exe = "avr-gcc"
avr.any.gcc.linkerexe = "avr-gcc"
avr.any.gcc.cpp.path = "/usr/bin"
avr.any.gcc.cpp.exe = "avr-g++"
avr.any.gcc.cpp.linkerexe = "avr-g++"

passC = "-Os"
passC = "-DF_CPU=16000000UL"
passC = "-I/usr/share/arduino/hardware/archlinux-arduino/avr/cores/arduino/"
passC = "-I/usr/share/arduino/hardware/archlinux-arduino/avr/variants/standard/"
passC = "-I/usr/avr/include/"
passC = "-mmcu=atmega328p"
passC = "-flto"
passC = "-Wall"
passC = "-DARDUINO_AVR_BOARD"
passC = "-DHAVE_STDINT_H"

passL = "-mmcu=atmega328p"
passL = "-flto"

cpu    = "avr"
gc     = "arc"
define = "noSignalHandler"
define = "useMalloc"
deadCodeElim = "on"
exceptions   = "quirky"  # o "goto"

Mixing @PMunch's, mine, some clues from platfotm.local.txt:


# Install this file into /opt/arduino-1.8.9/hardware/arduino/avr


compiler.nim.flags=--cpu:avr --os:any --gc:arc --exceptions:goto --noMain -d:noSignalHandler -d:danger -d:useMalloc

recipe.preproc.macros="nim_arduino" macros --nimflags="{compiler.nim.flags}" --compiler="{compiler.path}{compiler.cpp.cmd}" --cppflags="{compiler.cpp.flags} {preproc.macros.flags} -mmcu={build.mcu} -DF_CPU={build.f_cpu} -DARDUINO={runtime.ide.version} -DARDUINO_{build.board} -DARDUINO_ARCH_{build.arch} {compiler.cpp.extra_flags} {build.extra_flags} {includes}" --input="{source_file}" --output="{preprocessed_file_path}"
recipe.preproc.includes="nim_arduino" includes --compiler="{compiler.path}{compiler.cpp.cmd}" --cppflags="{compiler.cpp.flags} {preproc.macros.flags} -mmcu={build.mcu} -DF_CPU={build.f_cpu} -DARDUINO={runtime.ide.version} -DARDUINO_{build.board} -DARDUINO_ARCH_{build.arch} {compiler.cpp.extra_flags} {build.extra_flags} {includes}" --input="{source_file}" --output="{preprocessed_file_path}"
recipe.c.o.pattern="nim_arduino" c --compiler="{compiler.path}{compiler.c.cmd}" --cflags="{compiler.c.flags} -mmcu={build.mcu} -DF_CPU={build.f_cpu} -DARDUINO={runtime.ide.version} -DARDUINO_{build.board} -DARDUINO_ARCH_{build.arch} {compiler.cpp.extra_flags} {build.extra_flags} {includes}" --input="{source_file}" --output="{object_file}"
recipe.cpp.o.pattern="nim_arduino" cpp --compiler="{compiler.path}{compiler.cpp.cmd}" --cppflags="{compiler.cpp.flags} -mmcu={build.mcu} -DF_CPU={build.f_cpu} -DARDUINO={runtime.ide.version} -DARDUINO_{build.board} -DARDUINO_ARCH_{build.arch} {compiler.cpp.extra_flags} {build.extra_flags} {includes}" --input="{source_file}" --output="{object_file}"
recipe.c.combine.pattern="nim_arduino" link --linker="{compiler.path}{compiler.c.elf.cmd}" --ldflags="{compiler.c.elf.flags} -mmcu={build.mcu} {compiler.c.elf.extra_flags} {build.path}/{archive_file} -L{build.path} -lm" --output="{build.path}/{build.project_name}.elf" --input={object_files}

But still no success :o(

PMunch (orginal) [2021-04-13T09:37:43+02:00] view original

Hmm, Arduino stuff is C++, but you're compiling Nim to C, which might be causing issues. Try nim cpp -d:danger --opt:size --os:any hearbeat

mantielero (orginal) [2021-04-13T18:44:31+02:00] view original

I spotted that yesterday. So the lack of success still applies.

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