This patch does further refactoring using the new mp_raise_TypeError
and mp_raise_ValueError functions.

Only tuple, namedtuple and attrtuple use the tuple_cmp_helper function,
and they all have getiter=mp_obj_tuple_getiter, so the check here is only
to ensure that the self object is consistent.  Hence use mp_check_self.

To use the actual current name.

Checks for number of args removes where guaranteed by function descriptor,
self checking is replaced with mp_check_self(). In few cases, exception
is raised instead of assert.

Indended to replace raw asserts in bunch of files. Expands to empty
if MICROPY_BUILTIN_METHOD_CHECK_SELF_ARG is defined, otehrwise by
default still to assert, though a particular port may define it to
something else.

Introduce mp_raise_msg(), mp_raise_ValueError(), mp_raise_TypeError()
instead of previous pattern nlr_raise(mp_obj_new_exception_msg(...)).
Save few bytes on each call, which are many.

Fixing Issue #2243. Main problems were:

- HAL_ADC_GetState(adcHandle) may return other bits set (not only
  HAL_ADC_STATE_EOC_REG) when called - so I AND-ed it out as proposed by
  mattbrejza in Issue #2243.
- ADC Pin has to be configured as GPIO_MODE_ANALOG_ADC_CONTROL not only
  GPIO_MODE_ANALOG.
- Resolved ADC resolution L4 specific (Use L4 define ADC_RESOLUTION_12B).
- Changed setting of Init.EOCSelection toADC_EOC_SINGLE_CONV for L4.
- Added call to ADC_MultiModeTypeDef as this is done on a STM32Cube
  generated project too.
- Clean up: Configuration of ADC is done only in ONE function not the same
  is done in two functions.

Test is done on PA5 pin of STM32L4Discovery-Kit which is connected to the
DOWN button.

Thanks to mattbrejza for discovering the bug.

This patch introduces proper ADC Pin definitions in stm32l476_af.csv.
Originally provided by @tobbad.

Fixes build errors such as
"../lib/utils/printf.c:43:5: error: expected parameter declarator"

It used a standard BootROM programming algo and may be useful as a
fallback.

The tool now generates code for freezing floats in obj-repr A, B or C,
with the specific representation detected at compile time using macros.

Pin(16) now works as an input.

To accommodate growing firmware.

Of them, 0x87000 is irom0 segment.

This is required to ship increasing number of modules and examples
developed in teh course of ESP8266 port project.

This both good default for 4096 and makes less chance to see overflow page
issues.

Similar to existing MP_NOINLINE.

Skip tests if not available.

Tries to summarize most of the issues we've seen so far.

People tend to skip introductions (everyone knows what esp8266 is, right?),
so try to do A/B testing with a title inviting to read it.

Not all NodeMCU boards require it.

Default is disabled, enabled for unix port. Saves 600 bytes on x86.

This includes file and socket objects, backed by Unix file descriptor.
This improves compatibility with stmhal's uselect (and convenience of
use), though not completely: return value from poll.poll() is still
raw file descriptor.