mirror of
https://github.com/esphome/esphome.git
synced 2024-12-02 11:44:13 +01:00
137 lines
4.4 KiB
Python
137 lines
4.4 KiB
Python
import esphome.codegen as cg
|
|
import esphome.config_validation as cv
|
|
import esphome.final_validate as fv
|
|
from esphome import pins
|
|
from esphome.const import (
|
|
CONF_FREQUENCY,
|
|
CONF_ID,
|
|
CONF_INPUT,
|
|
CONF_OUTPUT,
|
|
CONF_SCAN,
|
|
CONF_SCL,
|
|
CONF_SDA,
|
|
CONF_ADDRESS,
|
|
CONF_I2C_ID,
|
|
)
|
|
from esphome.core import coroutine_with_priority, CORE
|
|
|
|
CODEOWNERS = ["@esphome/core"]
|
|
i2c_ns = cg.esphome_ns.namespace("i2c")
|
|
I2CBus = i2c_ns.class_("I2CBus")
|
|
ArduinoI2CBus = i2c_ns.class_("ArduinoI2CBus", I2CBus, cg.Component)
|
|
IDFI2CBus = i2c_ns.class_("IDFI2CBus", I2CBus, cg.Component)
|
|
I2CDevice = i2c_ns.class_("I2CDevice")
|
|
|
|
|
|
CONF_SDA_PULLUP_ENABLED = "sda_pullup_enabled"
|
|
CONF_SCL_PULLUP_ENABLED = "scl_pullup_enabled"
|
|
MULTI_CONF = True
|
|
|
|
|
|
def _bus_declare_type(value):
|
|
if CORE.using_arduino:
|
|
return cv.declare_id(ArduinoI2CBus)(value)
|
|
if CORE.using_esp_idf:
|
|
return cv.declare_id(IDFI2CBus)(value)
|
|
raise NotImplementedError
|
|
|
|
|
|
pin_with_input_and_output_support = cv.All(
|
|
pins.internal_gpio_pin_number({CONF_INPUT: True}),
|
|
pins.internal_gpio_pin_number({CONF_OUTPUT: True}),
|
|
)
|
|
|
|
|
|
CONFIG_SCHEMA = cv.Schema(
|
|
{
|
|
cv.GenerateID(): _bus_declare_type,
|
|
cv.Optional(CONF_SDA, default="SDA"): pin_with_input_and_output_support,
|
|
cv.SplitDefault(CONF_SDA_PULLUP_ENABLED, esp32_idf=True): cv.All(
|
|
cv.only_with_esp_idf, cv.boolean
|
|
),
|
|
cv.Optional(CONF_SCL, default="SCL"): pin_with_input_and_output_support,
|
|
cv.SplitDefault(CONF_SCL_PULLUP_ENABLED, esp32_idf=True): cv.All(
|
|
cv.only_with_esp_idf, cv.boolean
|
|
),
|
|
cv.Optional(CONF_FREQUENCY, default="50kHz"): cv.All(
|
|
cv.frequency, cv.Range(min=0, min_included=False)
|
|
),
|
|
cv.Optional(CONF_SCAN, default=True): cv.boolean,
|
|
}
|
|
).extend(cv.COMPONENT_SCHEMA)
|
|
|
|
|
|
@coroutine_with_priority(1.0)
|
|
async def to_code(config):
|
|
cg.add_global(i2c_ns.using)
|
|
var = cg.new_Pvariable(config[CONF_ID])
|
|
await cg.register_component(var, config)
|
|
|
|
cg.add(var.set_sda_pin(config[CONF_SDA]))
|
|
if CONF_SDA_PULLUP_ENABLED in config:
|
|
cg.add(var.set_sda_pullup_enabled(config[CONF_SDA_PULLUP_ENABLED]))
|
|
cg.add(var.set_scl_pin(config[CONF_SCL]))
|
|
if CONF_SCL_PULLUP_ENABLED in config:
|
|
cg.add(var.set_scl_pullup_enabled(config[CONF_SCL_PULLUP_ENABLED]))
|
|
|
|
cg.add(var.set_frequency(int(config[CONF_FREQUENCY])))
|
|
cg.add(var.set_scan(config[CONF_SCAN]))
|
|
if CORE.using_arduino:
|
|
cg.add_library("Wire", None)
|
|
|
|
|
|
def i2c_device_schema(default_address):
|
|
"""Create a schema for a i2c device.
|
|
|
|
:param default_address: The default address of the i2c device, can be None to represent
|
|
a required option.
|
|
:return: The i2c device schema, `extend` this in your config schema.
|
|
"""
|
|
schema = {
|
|
cv.GenerateID(CONF_I2C_ID): cv.use_id(I2CBus),
|
|
cv.Optional("multiplexer"): cv.invalid(
|
|
"This option has been removed, please see "
|
|
"the tca9584a docs for the updated way to use multiplexers"
|
|
),
|
|
}
|
|
if default_address is None:
|
|
schema[cv.Required(CONF_ADDRESS)] = cv.i2c_address
|
|
else:
|
|
schema[cv.Optional(CONF_ADDRESS, default=default_address)] = cv.i2c_address
|
|
return cv.Schema(schema)
|
|
|
|
|
|
async def register_i2c_device(var, config):
|
|
"""Register an i2c device with the given config.
|
|
|
|
Sets the i2c bus to use and the i2c address.
|
|
|
|
This is a coroutine, you need to await it with a 'yield' expression!
|
|
"""
|
|
parent = await cg.get_variable(config[CONF_I2C_ID])
|
|
cg.add(var.set_i2c_bus(parent))
|
|
cg.add(var.set_i2c_address(config[CONF_ADDRESS]))
|
|
|
|
|
|
def final_validate_device_schema(
|
|
name: str, *, min_frequency: cv.frequency = None, max_frequency: cv.frequency = None
|
|
):
|
|
hub_schema = {}
|
|
if min_frequency is not None:
|
|
hub_schema[cv.Required(CONF_FREQUENCY)] = cv.Range(
|
|
min=cv.frequency(min_frequency),
|
|
min_included=True,
|
|
msg=f"Component {name} requires a minimum frequency of {min_frequency} for the I2C bus",
|
|
)
|
|
|
|
if max_frequency is not None:
|
|
hub_schema[cv.Required(CONF_FREQUENCY)] = cv.Range(
|
|
max=cv.frequency(max_frequency),
|
|
max_included=True,
|
|
msg=f"Component {name} cannot be used with a frequency of over {max_frequency} for the I2C bus",
|
|
)
|
|
|
|
return cv.Schema(
|
|
{cv.Required(CONF_I2C_ID): fv.id_declaration_match_schema(hub_schema)},
|
|
extra=cv.ALLOW_EXTRA,
|
|
)
|