mirror of
https://github.com/esphome/esphome.git
synced 2024-11-27 17:27:59 +01:00
334 lines
10 KiB
Python
334 lines
10 KiB
Python
from functools import reduce
|
|
import operator
|
|
|
|
import esphome.config_validation as cv
|
|
from esphome.const import (
|
|
CONF_ALLOW_OTHER_USES,
|
|
CONF_IGNORE_STRAPPING_WARNING,
|
|
CONF_INPUT,
|
|
CONF_INVERTED,
|
|
CONF_MODE,
|
|
CONF_NUMBER,
|
|
CONF_OPEN_DRAIN,
|
|
CONF_OUTPUT,
|
|
CONF_PULLDOWN,
|
|
CONF_PULLUP,
|
|
)
|
|
from esphome.core import CORE
|
|
|
|
|
|
class PinRegistry(dict):
|
|
def __init__(self):
|
|
super().__init__()
|
|
self.pins_used = {}
|
|
|
|
def reset(self):
|
|
self.pins_used = {}
|
|
|
|
def get_count(self, key, id, number):
|
|
"""
|
|
Get the number of places a given pin is used.
|
|
:param key: The key of the registered pin schema.
|
|
:param id: The ID of the defining component
|
|
:param number: The pin number
|
|
:return: The number of places the pin is used.
|
|
"""
|
|
pin_key = (key, id, number)
|
|
return len(self.pins_used[pin_key]) if pin_key in self.pins_used else 0
|
|
|
|
def register(self, name, schema, final_validate=None):
|
|
"""
|
|
Register a pin schema
|
|
:param name:
|
|
:param schema:
|
|
:param final_validate:
|
|
:return:
|
|
"""
|
|
|
|
def decorator(fun):
|
|
self[name] = (fun, schema, final_validate)
|
|
return fun
|
|
|
|
return decorator
|
|
|
|
def validate(self, conf, key=None):
|
|
"""
|
|
Validate a pin against a registered schema
|
|
:param conf The pin config
|
|
:param key: an optional scalar key (e.g. platform)
|
|
:return: The transformed result
|
|
"""
|
|
from esphome.config import path_context
|
|
|
|
key = self.get_key(conf) if key is None else key
|
|
# Element 1 is the pin validation function
|
|
# evaluate here so a validation failure skips the rest
|
|
result = self[key][1](conf)
|
|
if CONF_NUMBER in result:
|
|
# key maps to the pin schema
|
|
if key != CORE.target_platform:
|
|
pin_key = (key, conf[key], result[CONF_NUMBER])
|
|
else:
|
|
pin_key = (key, key, result[CONF_NUMBER])
|
|
if pin_key not in self.pins_used:
|
|
self.pins_used[pin_key] = []
|
|
# client_id identifies the instance of the providing component
|
|
client_id = result.get(key)
|
|
self.pins_used[pin_key].append((path_context.get(), client_id, result))
|
|
# return the validated pin config
|
|
return result
|
|
|
|
def get_key(self, conf):
|
|
"""
|
|
Is there a key in conf corresponding to a registered pin schema?
|
|
If not, fall back to the default platform schema.
|
|
:param conf The config for the component
|
|
:return: the schema key
|
|
"""
|
|
keys = list(filter(lambda k: k in conf, self))
|
|
return keys[0] if keys else CORE.target_platform
|
|
|
|
def get_to_code(self, key):
|
|
"""
|
|
Return the code generator function for a pin schema, stored as tuple element 0
|
|
:param conf: The pin config
|
|
:param key An optional specific key
|
|
:return: The awaitable coroutine
|
|
"""
|
|
key = self.get_key(key) if isinstance(key, dict) else key
|
|
return self[key][0]
|
|
|
|
def final_validate(self, fconf):
|
|
"""
|
|
Run the final validation for all pins, and check for reuse
|
|
:param fconf: The full config
|
|
"""
|
|
for (key, _, _), pin_list in self.pins_used.items():
|
|
count = len(pin_list) # number of places same pin used.
|
|
final_val_fun = self[key][2] # final validation function
|
|
for pin_path, client_id, pin_config in pin_list:
|
|
with fconf.catch_error([cv.ROOT_CONFIG_PATH] + pin_path):
|
|
if final_val_fun is not None:
|
|
# Get the containing path of the config providing this pin.
|
|
parent_path = fconf.get_path_for_id(client_id)[:-1]
|
|
parent_config = fconf.get_config_for_path(parent_path)
|
|
final_val_fun(pin_config, parent_config)
|
|
allow_others = pin_config.get(CONF_ALLOW_OTHER_USES, False)
|
|
if count != 1 and not allow_others:
|
|
raise cv.Invalid(
|
|
f"Pin {pin_config[CONF_NUMBER]} is used in multiple places"
|
|
)
|
|
if count == 1 and allow_others:
|
|
raise cv.Invalid(
|
|
f"Pin {pin_config[CONF_NUMBER]} incorrectly sets {CONF_ALLOW_OTHER_USES}: true"
|
|
)
|
|
|
|
|
|
PIN_SCHEMA_REGISTRY = PinRegistry()
|
|
|
|
|
|
def _set_mode(value, default_mode):
|
|
if CONF_MODE not in value:
|
|
return {**value, CONF_MODE: default_mode}
|
|
mode = value[CONF_MODE]
|
|
if not isinstance(mode, str):
|
|
return value
|
|
# mode is a string, try parsing it like arduino pin modes
|
|
PIN_MODES = {
|
|
"INPUT": {
|
|
CONF_INPUT: True,
|
|
},
|
|
"OUTPUT": {
|
|
CONF_OUTPUT: True,
|
|
},
|
|
"INPUT_PULLUP": {
|
|
CONF_INPUT: True,
|
|
CONF_PULLUP: True,
|
|
},
|
|
"OUTPUT_OPEN_DRAIN": {
|
|
CONF_OUTPUT: True,
|
|
CONF_OPEN_DRAIN: True,
|
|
},
|
|
"INPUT_PULLDOWN_16": {
|
|
CONF_INPUT: True,
|
|
CONF_PULLDOWN: True,
|
|
},
|
|
"INPUT_PULLDOWN": {
|
|
CONF_INPUT: True,
|
|
CONF_PULLDOWN: True,
|
|
},
|
|
"INPUT_OUTPUT_OPEN_DRAIN": {
|
|
CONF_INPUT: True,
|
|
CONF_OUTPUT: True,
|
|
CONF_OPEN_DRAIN: True,
|
|
},
|
|
}
|
|
if mode.upper() not in PIN_MODES:
|
|
raise cv.Invalid(f"Unknown pin mode {mode}", [CONF_MODE])
|
|
return {**value, CONF_MODE: PIN_MODES[mode.upper()]}
|
|
|
|
|
|
def _schema_creator(default_mode, internal: bool = False):
|
|
def validator(value):
|
|
if not isinstance(value, dict):
|
|
return validator({CONF_NUMBER: value})
|
|
value = _set_mode(value, default_mode)
|
|
if internal:
|
|
return PIN_SCHEMA_REGISTRY.validate(value, CORE.target_platform)
|
|
return PIN_SCHEMA_REGISTRY.validate(value)
|
|
|
|
return validator
|
|
|
|
|
|
def _internal_number_creator(mode):
|
|
def validator(value):
|
|
if isinstance(value, dict):
|
|
if CONF_MODE in value or CONF_INVERTED in value:
|
|
raise cv.Invalid(
|
|
"This variable only supports pin numbers, not full pin schemas "
|
|
"(with inverted and mode)."
|
|
)
|
|
value_d = value
|
|
else:
|
|
value_d = {CONF_NUMBER: value}
|
|
value_d = _set_mode(value_d, mode)
|
|
return PIN_SCHEMA_REGISTRY.validate(value_d, CORE.target_platform)[CONF_NUMBER]
|
|
|
|
return validator
|
|
|
|
|
|
def gpio_flags_expr(mode):
|
|
"""Convert the given mode dict to a gpio Flags expression"""
|
|
import esphome.codegen as cg
|
|
|
|
FLAGS_MAPPING = {
|
|
CONF_INPUT: cg.gpio_Flags.FLAG_INPUT,
|
|
CONF_OUTPUT: cg.gpio_Flags.FLAG_OUTPUT,
|
|
CONF_OPEN_DRAIN: cg.gpio_Flags.FLAG_OPEN_DRAIN,
|
|
CONF_PULLUP: cg.gpio_Flags.FLAG_PULLUP,
|
|
CONF_PULLDOWN: cg.gpio_Flags.FLAG_PULLDOWN,
|
|
}
|
|
active_flags = [v for k, v in FLAGS_MAPPING.items() if mode.get(k)]
|
|
if not active_flags:
|
|
return cg.gpio_Flags.FLAG_NONE
|
|
|
|
return reduce(operator.or_, active_flags)
|
|
|
|
|
|
gpio_pin_schema = _schema_creator
|
|
internal_gpio_pin_number = _internal_number_creator
|
|
gpio_output_pin_schema = _schema_creator(
|
|
{
|
|
CONF_OUTPUT: True,
|
|
}
|
|
)
|
|
gpio_input_pin_schema = _schema_creator(
|
|
{
|
|
CONF_INPUT: True,
|
|
}
|
|
)
|
|
gpio_input_pullup_pin_schema = _schema_creator(
|
|
{
|
|
CONF_INPUT: True,
|
|
CONF_PULLUP: True,
|
|
}
|
|
)
|
|
internal_gpio_output_pin_schema = _schema_creator(
|
|
{
|
|
CONF_OUTPUT: True,
|
|
},
|
|
internal=True,
|
|
)
|
|
internal_gpio_output_pin_number = _internal_number_creator({CONF_OUTPUT: True})
|
|
internal_gpio_input_pin_schema = _schema_creator(
|
|
{
|
|
CONF_INPUT: True,
|
|
},
|
|
internal=True,
|
|
)
|
|
internal_gpio_input_pin_number = _internal_number_creator({CONF_INPUT: True})
|
|
internal_gpio_input_pullup_pin_schema = _schema_creator(
|
|
{
|
|
CONF_INPUT: True,
|
|
CONF_PULLUP: True,
|
|
},
|
|
internal=True,
|
|
)
|
|
internal_gpio_input_pullup_pin_number = _internal_number_creator(
|
|
{
|
|
CONF_INPUT: True,
|
|
CONF_PULLUP: True,
|
|
}
|
|
)
|
|
|
|
|
|
def check_strapping_pin(conf, strapping_pin_list, logger):
|
|
num = conf[CONF_NUMBER]
|
|
if num in strapping_pin_list and not conf.get(CONF_IGNORE_STRAPPING_WARNING):
|
|
logger.warning(
|
|
f"GPIO{num} is a strapping PIN and should only be used for I/O with care.\n"
|
|
"Attaching external pullup/down resistors to strapping pins can cause unexpected failures.\n"
|
|
"See https://esphome.io/guides/faq.html#why-am-i-getting-a-warning-about-strapping-pins",
|
|
)
|
|
# mitigate undisciplined use of strapping:
|
|
if num not in strapping_pin_list and conf.get(CONF_IGNORE_STRAPPING_WARNING):
|
|
raise cv.Invalid(f"GPIO{num} is not a strapping pin")
|
|
|
|
|
|
GPIO_STANDARD_MODES = (
|
|
CONF_INPUT,
|
|
CONF_OUTPUT,
|
|
CONF_OPEN_DRAIN,
|
|
CONF_PULLUP,
|
|
CONF_PULLDOWN,
|
|
)
|
|
|
|
|
|
def gpio_validate_modes(value):
|
|
if not value[CONF_INPUT] and not value[CONF_OUTPUT]:
|
|
raise cv.Invalid("Mode must be input or output")
|
|
return value
|
|
|
|
|
|
def gpio_base_schema(
|
|
pin_type,
|
|
number_validator,
|
|
modes=GPIO_STANDARD_MODES,
|
|
mode_validator=gpio_validate_modes,
|
|
invertable=True,
|
|
):
|
|
"""
|
|
Generate a base gpio pin schema
|
|
:param pin_type: The type for the pin variable
|
|
:param number_validator: A validator for the pin number
|
|
:param modes: The available modes, default is all standard modes
|
|
:param mode_validator: A validator function for the pin mode
|
|
:param invertable: If the pin supports hardware inversion
|
|
:return: A schema for the pin
|
|
"""
|
|
mode_default = len(modes) == 1
|
|
mode_dict = dict(
|
|
map(lambda m: (cv.Optional(m, default=mode_default), cv.boolean), modes)
|
|
)
|
|
|
|
def _number_validator(value):
|
|
if isinstance(value, str) and value.upper().startswith("GPIOX"):
|
|
raise cv.Invalid(
|
|
f"Found placeholder '{value}' when expecting a GPIO pin number.\n"
|
|
"You must replace this with an actual pin number."
|
|
)
|
|
return number_validator(value)
|
|
|
|
schema = cv.Schema(
|
|
{
|
|
cv.GenerateID(): cv.declare_id(pin_type),
|
|
cv.Required(CONF_NUMBER): _number_validator,
|
|
cv.Optional(CONF_ALLOW_OTHER_USES): cv.boolean,
|
|
cv.Optional(CONF_MODE, default={}): cv.All(mode_dict, mode_validator),
|
|
}
|
|
)
|
|
|
|
if invertable:
|
|
return schema.extend({cv.Optional(CONF_INVERTED, default=False): cv.boolean})
|
|
|
|
return schema
|