Platformio configuration for simavr integration

main.c

//Header for simavr macros
#include <simavr/avr/avr_mcu_section.h>

//Sets CPU model and frecuency
AVR_MCU(F_CPU, "atmega328");

//Sets which registers should be traced
const struct avr_mmcu_vcd_trace_t _mytrace[]  _MMCU_ = {
  { AVR_MCU_VCD_SYMBOL("PORTB"), .what = (void*)&PORTB},
  { AVR_MCU_VCD_SYMBOL("PORTC"), .what = (void*)&PORTC},
  { AVR_MCU_VCD_SYMBOL("PORTD"), .what = (void*)&PORTD},
};

platformio.ini

; PlatformIO Project Configuration File
;
;   Build options: build flags, source filter
;   Upload options: custom upload port, speed and extra flags
;   Library options: dependencies, extra library storages
;   Advanced options: extra scripting
;
; Please visit documentation for the other options and examples
; https://docs.platformio.org/page/projectconf.html

[env:release]
platform = atmelavr
board = nanoatmega328new
build_flags =
  -I/usr/local/include/

[env:debug]
build_type = debug ; adds -g2 -ggdb2 -Og to build_flags
platform = atmelavr
board = nanoatmega328new
extra_scripts = simavr_env.py
build_unflags = -Os -Og ; problematic flags
build_flags =
  -I/usr/local/include/
  -Wl,--undefined=_mmcu,--section-start=.mmcu=0x910000

debug_port = 1234
debug_tool = custom
debug_init_cmds =
  target remote :$DEBUG_PORT
  file "$PROG_PATH"
  ;load ; load error due to mmcu section

simavr_env.py

# Credits to MaslowCNC for the original code
from SCons.Script import ARGUMENTS, AlwaysBuild

Import('env')

# Dump construction environment
#print(env.Dump())

# Don't try to upload the firmware
env.Replace(UPLOADHEXCMD="echo Upload is not supported for ${PIOENV}. Skipping")

pioenv = env.get("PIOENV")
progname = env.get("PROGNAME")
brdmcu = env.get("BOARD_MCU")
brdfcpu = env.get("BOARD_F_CPU")

def simulate_callback(*args, **kwargs):
    env.Execute("simavr -g -m " + brdmcu + " -f " + brdfcpu + " .pio/build/" + pioenv + "/" + progname + ".elf")

AlwaysBuild(env.Alias("simulate", "", simulate_callback))