ESPHomeMarlin2/__init__.py

import esphome.codegen as cg
import esphome.config_validation as cv
from esphome.components import uart
from esphome.const import (
    CONF_ID, 
    CONF_INDEX, 
    CONF_SENSORS, 
    CONF_HUMIDITY, 
    CONF_MODEL, 
    CONF_PIN, 
    CONF_TEMPERATURE, 
    UNIT_CELSIUS, 
    UNIT_PERCENT, 
    UNIT_SECOND, 
    STATE_CLASS_MEASUREMENT, 
    DEVICE_CLASS_TEMPERATURE,
    DEVICE_CLASS_DURATION,
    CONF_DATA,
    CONF_VALUE
)
from esphome import pins, automation
from esphome.core import CORE, coroutine_with_priority

CODEOWNERS = ["@jonatanrek"]
DEPENDENCIES = ['uart']
CONF_MARLIN2_ID = "marlin2_id"

Marlin2 = cg.esphome_ns.class_('Marlin2', cg.Component)
Marlin2WriteAction = Marlin2.class_("Marlin2WriteAction", automation.Action)

CONFIG_SCHEMA = cv.All(
    cv.Schema({
            cv.GenerateID(): cv.declare_id(Marlin2),
    })
    .extend(cv.COMPONENT_SCHEMA)
    .extend(uart.UART_DEVICE_SCHEMA),
)

def validate_raw_data(value):
    if isinstance(value, str):
        return value.encode("utf-8")
    if isinstance(value, str):
        return value
    if isinstance(value, list):
        return cv.Schema([cv.hex_uint8_t])(value)
    raise cv.Invalid("data must either be a string wrapped in quotes or a list of bytes")

@coroutine_with_priority(100.0)
async def to_code(config):
    var = cg.new_Pvariable(config[CONF_ID])
    await cg.register_component(var, config)
    await uart.register_uart_device(var, config)

OPERATION_BASE_SCHEMA = cv.Schema({
    cv.GenerateID(): cv.use_id(Marlin2),
    cv.Required(CONF_VALUE): cv.templatable(cv.string_strict),
})

@automation.register_action(
    "marlin2.write",
    Marlin2WriteAction,
    OPERATION_BASE_SCHEMA,
)

async def marlin2_write_to_code(config, action_id, template_arg, args):
    paren = await cg.get_variable(config[CONF_ID])
    var = cg.new_Pvariable(action_id, template_arg, paren)
    template_ = await cg.templatable(config[CONF_VALUE], args, cg.std_string)
    cg.add(var.set_value(template_))
    return var