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https://github.com/esphome/esphome.git
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87 lines
2.7 KiB
Python
87 lines
2.7 KiB
Python
from esphome import pins, automation
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from esphome.components import output
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import esphome.config_validation as cv
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import esphome.codegen as cg
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from esphome.const import (
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CONF_BIT_DEPTH,
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CONF_CHANNEL,
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CONF_FREQUENCY,
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CONF_ID,
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CONF_PIN,
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ESP_PLATFORM_ESP32,
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)
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ESP_PLATFORMS = [ESP_PLATFORM_ESP32]
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def calc_max_frequency(bit_depth):
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return 80e6 / (2 ** bit_depth)
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def calc_min_frequency(bit_depth):
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max_div_num = ((2 ** 20) - 1) / 256.0
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return 80e6 / (max_div_num * (2 ** bit_depth))
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def validate_frequency(value):
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value = cv.frequency(value)
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min_freq = calc_min_frequency(20)
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max_freq = calc_max_frequency(1)
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if value < min_freq:
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raise cv.Invalid(
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"This frequency setting is not possible, please choose a higher "
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"frequency (at least {}Hz)".format(int(min_freq))
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)
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if value > max_freq:
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raise cv.Invalid(
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"This frequency setting is not possible, please choose a lower "
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"frequency (at most {}Hz)".format(int(max_freq))
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)
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return value
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ledc_ns = cg.esphome_ns.namespace("ledc")
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LEDCOutput = ledc_ns.class_("LEDCOutput", output.FloatOutput, cg.Component)
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SetFrequencyAction = ledc_ns.class_("SetFrequencyAction", automation.Action)
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CONFIG_SCHEMA = output.FLOAT_OUTPUT_SCHEMA.extend(
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{
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cv.Required(CONF_ID): cv.declare_id(LEDCOutput),
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cv.Required(CONF_PIN): pins.internal_gpio_output_pin_schema,
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cv.Optional(CONF_FREQUENCY, default="1kHz"): cv.frequency,
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cv.Optional(CONF_CHANNEL): cv.int_range(min=0, max=15),
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cv.Optional(CONF_BIT_DEPTH): cv.invalid(
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"The bit_depth option has been removed in v1.14, the "
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"best bit depth is now automatically calculated."
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),
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}
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).extend(cv.COMPONENT_SCHEMA)
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def to_code(config):
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gpio = yield cg.gpio_pin_expression(config[CONF_PIN])
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var = cg.new_Pvariable(config[CONF_ID], gpio)
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yield cg.register_component(var, config)
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yield output.register_output(var, config)
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if CONF_CHANNEL in config:
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cg.add(var.set_channel(config[CONF_CHANNEL]))
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cg.add(var.set_frequency(config[CONF_FREQUENCY]))
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@automation.register_action(
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"output.ledc.set_frequency",
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SetFrequencyAction,
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cv.Schema(
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{
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cv.Required(CONF_ID): cv.use_id(LEDCOutput),
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cv.Required(CONF_FREQUENCY): cv.templatable(validate_frequency),
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}
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),
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)
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def ledc_set_frequency_to_code(config, action_id, template_arg, args):
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paren = yield cg.get_variable(config[CONF_ID])
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var = cg.new_Pvariable(action_id, template_arg, paren)
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template_ = yield cg.templatable(config[CONF_FREQUENCY], args, float)
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cg.add(var.set_frequency(template_))
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yield var
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