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73 lines
2.4 KiB
Python
73 lines
2.4 KiB
Python
import voluptuous as vol
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import esphomeyaml.config_validation as cv
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from esphomeyaml import pins
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from esphomeyaml.components import display
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from esphomeyaml.const import CONF_DATA_PINS, CONF_DIMENSIONS, CONF_ENABLE_PIN, CONF_ID, \
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CONF_LAMBDA, CONF_RS_PIN, CONF_RW_PIN
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from esphomeyaml.helpers import App, Pvariable, add, gpio_output_pin_expression, process_lambda
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GPIOLCDDisplay = display.display_ns.GPIOLCDDisplay
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LCDDisplay = display.display_ns.LCDDisplay
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LCDDisplayRef = LCDDisplay.operator('ref')
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def validate_lcd_dimensions(value):
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value = cv.dimensions(value)
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if value[0] > 0x40:
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raise vol.Invalid("LCD displays can't have more than 64 columns")
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if value[1] > 4:
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raise vol.Invalid("LCD displays can't have more than 4 rows")
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return value
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def validate_pin_length(value):
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if len(value) != 4 and len(value) != 8:
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raise vol.Invalid("LCD Displays can either operate in 4-pin or 8-pin mode,"
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"not {}-pin mode".format(len(value)))
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return value
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PLATFORM_SCHEMA = display.BASIC_DISPLAY_PLATFORM_SCHEMA.extend({
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cv.GenerateID(): cv.declare_variable_id(GPIOLCDDisplay),
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vol.Required(CONF_DIMENSIONS): validate_lcd_dimensions,
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vol.Required(CONF_DATA_PINS): vol.All([pins.gpio_output_pin_schema], validate_pin_length),
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vol.Required(CONF_ENABLE_PIN): pins.gpio_output_pin_schema,
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vol.Required(CONF_RS_PIN): pins.gpio_output_pin_schema,
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vol.Optional(CONF_RW_PIN): pins.gpio_output_pin_schema,
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})
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def to_code(config):
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rhs = App.make_gpio_lcd_display(config[CONF_DIMENSIONS][0], config[CONF_DIMENSIONS][1])
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lcd = Pvariable(config[CONF_ID], rhs)
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pins_ = []
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for conf in config[CONF_DATA_PINS]:
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for pin in gpio_output_pin_expression(conf):
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yield
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pins_.append(pin)
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add(lcd.set_data_pins(*pins_))
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for enable in gpio_output_pin_expression(config[CONF_ENABLE_PIN]):
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yield
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add(lcd.set_enable_pin(enable))
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for rs in gpio_output_pin_expression(config[CONF_RS_PIN]):
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yield
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add(lcd.set_rs_pin(rs))
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if CONF_RW_PIN in config:
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for rw in gpio_output_pin_expression(config[CONF_RW_PIN]):
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yield
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add(lcd.set_rw_pin(rw))
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if CONF_LAMBDA in config:
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for lambda_ in process_lambda(config[CONF_LAMBDA], [(LCDDisplayRef, 'it')]):
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yield
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add(lcd.set_writer(lambda_))
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display.setup_display(lcd, config)
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BUILD_FLAGS = '-DUSE_LCD_DISPLAY'
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