mirror of https://github.com/esphome/esphome.git
88 lines
3.0 KiB
Python
88 lines
3.0 KiB
Python
import esphome.codegen as cg
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import esphome.config_validation as cv
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from esphome import pins, automation
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from esphome.const import CONF_BAUD_RATE, CONF_ID, CONF_RX_PIN, CONF_TX_PIN, CONF_UART_ID, CONF_DATA
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from esphome.core import CORE, coroutine
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uart_ns = cg.esphome_ns.namespace('uart')
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UARTComponent = uart_ns.class_('UARTComponent', cg.Component)
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UARTDevice = uart_ns.class_('UARTDevice')
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UARTWriteAction = uart_ns.class_('UARTWriteAction', automation.Action)
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MULTI_CONF = True
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def validate_raw_data(value):
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if isinstance(value, str):
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return value.encode('utf-8')
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if isinstance(value, str):
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return value
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if isinstance(value, list):
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return cv.Schema([cv.hex_uint8_t])(value)
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raise cv.Invalid("data must either be a string wrapped in quotes or a list of bytes")
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def validate_rx_pin(value):
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value = pins.input_pin(value)
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if CORE.is_esp8266 and value >= 16:
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raise cv.Invalid("Pins GPIO16 and GPIO17 cannot be used as RX pins on ESP8266.")
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return value
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CONF_STOP_BITS = 'stop_bits'
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CONFIG_SCHEMA = cv.All(cv.Schema({
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cv.GenerateID(): cv.declare_id(UARTComponent),
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cv.Required(CONF_BAUD_RATE): cv.int_range(min=1),
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cv.Optional(CONF_TX_PIN): pins.output_pin,
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cv.Optional(CONF_RX_PIN): validate_rx_pin,
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cv.Optional(CONF_STOP_BITS, default=1): cv.one_of(1, 2, int=True),
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}).extend(cv.COMPONENT_SCHEMA), cv.has_at_least_one_key(CONF_TX_PIN, CONF_RX_PIN))
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def to_code(config):
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cg.add_global(uart_ns.using)
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var = cg.new_Pvariable(config[CONF_ID])
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yield cg.register_component(var, config)
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cg.add(var.set_baud_rate(config[CONF_BAUD_RATE]))
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if CONF_TX_PIN in config:
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cg.add(var.set_tx_pin(config[CONF_TX_PIN]))
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if CONF_RX_PIN in config:
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cg.add(var.set_rx_pin(config[CONF_RX_PIN]))
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cg.add(var.set_stop_bits(config[CONF_STOP_BITS]))
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# A schema to use for all UART devices, all UART integrations must extend this!
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UART_DEVICE_SCHEMA = cv.Schema({
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cv.GenerateID(CONF_UART_ID): cv.use_id(UARTComponent),
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})
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@coroutine
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def register_uart_device(var, config):
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"""Register a UART device, setting up all the internal values.
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This is a coroutine, you need to await it with a 'yield' expression!
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"""
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parent = yield cg.get_variable(config[CONF_UART_ID])
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cg.add(var.set_uart_parent(parent))
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@automation.register_action('uart.write', UARTWriteAction, cv.maybe_simple_value({
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cv.GenerateID(): cv.use_id(UARTComponent),
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cv.Required(CONF_DATA): cv.templatable(validate_raw_data),
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}, key=CONF_DATA))
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def uart_write_to_code(config, action_id, template_arg, args):
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var = cg.new_Pvariable(action_id, template_arg)
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yield cg.register_parented(var, config[CONF_ID])
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data = config[CONF_DATA]
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if isinstance(data, bytes):
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data = list(data)
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if cg.is_template(data):
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templ = yield cg.templatable(data, args, cg.std_vector.template(cg.uint8))
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cg.add(var.set_data_template(templ))
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else:
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cg.add(var.set_data_static(data))
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yield var
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