esphome/esphomeyaml/components/uart.py

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import voluptuous as vol
import esphomeyaml.config_validation as cv
from esphomeyaml import pins
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from esphomeyaml.const import CONF_BAUD_RATE, CONF_ID, CONF_RX_PIN, CONF_TX_PIN
from esphomeyaml.helpers import App, Pvariable, esphomelib_ns, setup_component, Component
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UARTComponent = esphomelib_ns.class_('UARTComponent', Component)
UARTDevice = esphomelib_ns.class_('UARTDevice')
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UART_SCHEMA = vol.All(vol.Schema({
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cv.GenerateID(): cv.declare_variable_id(UARTComponent),
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vol.Optional(CONF_TX_PIN): pins.output_pin,
vol.Optional(CONF_RX_PIN): pins.input_pin,
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vol.Required(CONF_BAUD_RATE): cv.positive_int,
}).extend(cv.COMPONENT_SCHEMA.schema), cv.has_at_least_one_key(CONF_TX_PIN, CONF_RX_PIN))
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CONFIG_SCHEMA = vol.All(cv.ensure_list, [UART_SCHEMA])
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def to_code(config):
for conf in config:
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tx = conf.get(CONF_TX_PIN, -1)
rx = conf.get(CONF_RX_PIN, -1)
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rhs = App.init_uart(tx, rx, conf[CONF_BAUD_RATE])
var = Pvariable(conf[CONF_ID], rhs)
setup_component(var, conf)
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BUILD_FLAGS = '-DUSE_UART'