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Arduino global delay/millis/... symbols workaround (#2575)

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Otto Winter 2021-10-21 14:20:23 +02:00 committed by GitHub
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commit f41f7994a3
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28
esphome/core/config.py
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@ -206,6 +206,31 @@ def include_file(path, basename):
cg.add_global(cg.RawStatement(f'#include "{basename}"'))
ARDUINO_GLUE_CODE = """\
#define yield() esphome::yield()
#define millis() esphome::millis()
#define delay(x) esphome::delay(x)
#define delayMicroseconds(x) esphome::delayMicroseconds(x)
"""
@coroutine_with_priority(-999.0)
async def add_arduino_global_workaround():
# The Arduino framework defined these itself in the global
# namespace. For the esphome codebase that is not a problem,
# but when custom code
# 1. writes `millis()` for example AND
# 2. has `using namespace esphome;` like our guides suggest
# Then the compiler will complain that the call is ambiguous
# Define a hacky macro so that the call is never ambiguous
# and always uses the esphome namespace one.
# See also https://github.com/esphome/issues/issues/2510
# Priority -999 so that it runs before adding includes, as those
# also might reference these symbols
for line in ARDUINO_GLUE_CODE.splitlines():
cg.add_global(cg.RawStatement(line))
@coroutine_with_priority(-1000.0)
async def add_includes(includes):
# Add includes at the very end, so that the included files can access global variables
@ -287,6 +312,9 @@ async def to_code(config):
cg.add_build_flag("-Wno-unused-but-set-variable")
cg.add_build_flag("-Wno-sign-compare")
if CORE.using_arduino:
CORE.add_job(add_arduino_global_workaround)
if config[CONF_INCLUDES]:
CORE.add_job(add_includes, config[CONF_INCLUDES])