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Hello!

Trying to build this project with the latest versions of PlatformIO and it seems to have heartburn with the patched library.properties files not being parsed correctly. The only thing I can find about this subject is that PlatformIO recommends this file to be in json format. Any ideas?

CONFIGURATION: https://docs.platformio.org/page/boards/espressif32/lolin_d32_pro_16MB.html
PLATFORM: Espressif 32 (3.3.2) > WEMOS LOLIN D32 PRO 16MB
HARDWARE: ESP32 240MHz, 3.91MB RAM, 6.25MB Flash
DEBUG: Current (esp-prog) External (esp-prog, iot-bus-jtag, jlink, minimodule, olimex-arm-usb-ocd, olimex-arm-usb-ocd-h, olimex-arm-usb-tiny-h, olimex-jtag-tiny, tumpa)
PACKAGES:

• framework-arduinoespressif32 3.10006.210326 (1.0.6)
• tool-esptoolpy 1.30100.210531 (3.1.0)
• toolchain-xtensa32 2.50200.97 (5.2.0)
  LDF: Library Dependency Finder -> http://bit.ly/configure-pio-ldf
  LDF Modes: Finder ~ chain, Compatibility ~ soft
  ValueError: Invalid simple block '26b691b2c8':
  File "/Users/bobj/.platformio/penv/lib/python3.8/site-packages/platformio/builder/main.py", line 178:
  env.SConscript("$BUILD_SCRIPT")
  File "/Users/bobj/.platformio/packages/tool-scons/scons-local-4.2.0/SCons/Script/SConscript.py", line 597:
  return _SConscript(self.fs, *files, **subst_kw)
  File "/Users/bobj/.platformio/packages/tool-scons/scons-local-4.2.0/SCons/Script/SConscript.py", line 285:
  exec(compile(scriptdata, scriptname, 'exec'), call_stack[-1].globals)
  File "/Users/bobj/.platformio/platforms/espressif32/builder/main.py", line 218:
  target_elf = env.BuildProgram()
  File "/Users/bobj/.platformio/packages/tool-scons/scons-local-4.2.0/SCons/Util.py", line 748:
  return self.method(*nargs, **kwargs)
  File "/Users/bobj/.platformio/penv/lib/python3.8/site-packages/platformio/builder/tools/platformio.py", line 62:
  env.ProcessProjectDeps()
  File "/Users/bobj/.platformio/packages/tool-scons/scons-local-4.2.0/SCons/Util.py", line 748:
  return self.method(*nargs, **kwargs)
  File "/Users/bobj/.platformio/penv/lib/python3.8/site-packages/platformio/builder/tools/platformio.py", line 141:
  project_lib_builder = env.ConfigureProjectLibBuilder()
  File "/Users/bobj/.platformio/packages/tool-scons/scons-local-4.2.0/SCons/Util.py", line 748:
  return self.method(*nargs, **kwargs)
  File "/Users/bobj/.platformio/penv/lib/python3.8/site-packages/platformio/builder/tools/piolib.py", line 1092:
  project.install_dependencies()
  File "/Users/bobj/.platformio/penv/lib/python3.8/site-packages/platformio/builder/tools/piolib.py", line 916:
  if lm.get_package(spec):
  File "/Users/bobj/.platformio/penv/lib/python3.8/site-packages/platformio/package/manager/base.py", line 234:
  spec = self.ensure_spec(spec)
  File "/Users/bobj/.platformio/penv/lib/python3.8/site-packages/platformio/package/manager/base.py", line 102:
  return spec if isinstance(spec, PackageSpec) else PackageSpec(spec)
  File "/Users/bobj/.platformio/penv/lib/python3.8/site-packages/platformio/package/meta.py", line 124:
  self._parse(self.raw)
  File "/Users/bobj/.platformio/penv/lib/python3.8/site-packages/platformio/package/meta.py", line 227:
  raw = parser(raw)
  File "/Users/bobj/.platformio/penv/lib/python3.8/site-packages/platformio/package/meta.py", line 250:
  self.requirements = tokens[1].strip()
  File "/Users/bobj/.platformio/penv/lib/python3.8/site-packages/platformio/package/meta.py", line 167:
  else semantic_version.SimpleSpec(str(value))
  File "/Users/bobj/.platformio/penv/lib/python3.8/site-packages/semantic_version/base.py", line 618:
  self.clause = self._parse_to_clause(expression)
  File "/Users/bobj/.platformio/penv/lib/python3.8/site-packages/semantic_version/base.py", line 1014:
  return cls.Parser.parse(expression)
  File "/Users/bobj/.platformio/penv/lib/python3.8/site-packages/semantic_version/base.py", line 1034:
  raise ValueError("Invalid simple block %r" % block)

The resulting configuration of the INA219 is not what it seems to be:

generates as IN219 config register value 0x183F or
in bit groups: 000 11 0000 0111 111
BRNG = 0 -> 16V
PG10 = 11 -> /8 320mV
BADC = 0000 -> 9 bit, 84uS
SADC = 0111 -> 12 bit, 532uS
MODE = 111 -> Continuous Shunt and Bus voltage

Reason for this is the extensive use of default values combined with limited checking of value ranges in the INA219 library used.

void configure(uint8_t range = D_RANGE, uint8_t gain = D_GAIN, uint8_t bus_adc = D_BUS_ADC, uint8_t shunt_adc = D_SHUNT_ADC, uint8_t mode = D_MODE);

So the correct call to achieve the intentions would be:

ina219.configure(BUS_RANGE_16V,  PGA_RANGE_160MV, 0, SAMPLE_AVG_128, CONTINUOS_OP);

The extra 0 for the bus_adc shifts the shunt_adc setting to the right place.

Unfortunately this alone would not work as expected, as SAMPLE_AVG_128 is set to 16 (0b10000) but should be 15 ( 0b1111). Because of the missing checking of value ranges in configure, the 5th bit "bleeds" into the next higher settings bits. So SAMPLE_AVG_128 has to be defined to 15 in PulseWelder.h

However, I wonder, if we should not simply fix the configuration call to match what has been configured in reality, e.g. like this (given set the used defines to the correct values)

ina219.configure(BUS_RANGE_16V,  PGA_RANGE_320MV, SAMPLE_9BITS, SAMPLE_12BITS, CONTINUOS_OP);

and start from there. For things I have in mind, the averaging in the INA219 may not be appropriate, I have to see what current sample rate I will need.

BTW, the config register value generated from this is 0x181F which is identical in terms of resulting configuration to 0x183F since the 3rd bit in SAMPLE_12BITS is don't care if the 4th( == MSB) bit is 0.

If this is fine with everyone, I would submit a PR for this.

On my build (which is quite similar to the original one), the current readings are easily disturbed by placing or moving a hand close to the INA219 mounted on the perfboard. I use twisted wire but moving the wire around or touching it does not cause changes.
Also if everything is put together I see more fluctuation in the measured current than if the electronics are not as close to the front of the welder. However, the disturbuance create by hand movements is worse.