esphome/esphomeyaml/components/display/waveshare_epaper.py

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import voluptuous as vol
import esphomeyaml.config_validation as cv
from esphomeyaml import pins
from esphomeyaml.components import display, spi
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from esphomeyaml.components.spi import SPIComponent
from esphomeyaml.const import CONF_BUSY_PIN, CONF_CS_PIN, CONF_DC_PIN, CONF_FULL_UPDATE_EVERY, \
CONF_ID, CONF_LAMBDA, CONF_MODEL, CONF_RESET_PIN, CONF_SPI_ID
from esphomeyaml.helpers import App, Pvariable, add, get_variable, gpio_input_pin_expression, \
gpio_output_pin_expression, process_lambda, setup_component, PollingComponent
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DEPENDENCIES = ['spi']
WaveshareEPaperTypeA = display.display_ns.WaveshareEPaperTypeA
WaveshareEPaper = display.display_ns.class_('WaveshareEPaper',
PollingComponent, spi.SPIDevice, display.DisplayBuffer)
WaveshareEPaperTypeAModel = display.display_ns.enum('WaveshareEPaperTypeAModel')
WaveshareEPaperTypeBModel = display.display_ns.enum('WaveshareEPaperTypeBModel')
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MODELS = {
'1.54in': ('a', WaveshareEPaperTypeAModel.WAVESHARE_EPAPER_1_54_IN),
'2.13in': ('a', WaveshareEPaperTypeAModel.WAVESHARE_EPAPER_2_13_IN),
'2.90in': ('a', WaveshareEPaperTypeAModel.WAVESHARE_EPAPER_2_9_IN),
'2.70in': ('b', WaveshareEPaperTypeBModel.WAVESHARE_EPAPER_2_7_IN),
'4.20in': ('b', WaveshareEPaperTypeBModel.WAVESHARE_EPAPER_4_2_IN),
'7.50in': ('b', WaveshareEPaperTypeBModel.WAVESHARE_EPAPER_7_5_IN),
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}
def validate_full_update_every_only_type_a(value):
if CONF_FULL_UPDATE_EVERY not in value:
return value
if MODELS[value[CONF_MODEL]][0] != 'a':
raise vol.Invalid("The 'full_update_every' option is only available for models "
"'1.54in', '2.13in' and '2.90in'.")
return value
PLATFORM_SCHEMA = vol.All(display.FULL_DISPLAY_PLATFORM_SCHEMA.extend({
cv.GenerateID(): cv.declare_variable_id(WaveshareEPaper),
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cv.GenerateID(CONF_SPI_ID): cv.use_variable_id(SPIComponent),
vol.Required(CONF_CS_PIN): pins.gpio_output_pin_schema,
vol.Required(CONF_DC_PIN): pins.gpio_output_pin_schema,
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vol.Required(CONF_MODEL): vol.All(vol.Lower, cv.one_of(*MODELS)),
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vol.Optional(CONF_RESET_PIN): pins.gpio_output_pin_schema,
vol.Optional(CONF_BUSY_PIN): pins.gpio_input_pin_schema,
vol.Optional(CONF_FULL_UPDATE_EVERY): cv.uint32_t,
}).extend(cv.COMPONENT_SCHEMA.schema), validate_full_update_every_only_type_a)
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def to_code(config):
for spi_ in get_variable(config[CONF_SPI_ID]):
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yield
for cs in gpio_output_pin_expression(config[CONF_CS_PIN]):
yield
for dc in gpio_output_pin_expression(config[CONF_DC_PIN]):
yield
model_type, model = MODELS[config[CONF_MODEL]]
if model_type == 'a':
rhs = App.make_waveshare_epaper_type_a(spi_, cs, dc, model)
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epaper = Pvariable(config[CONF_ID], rhs, type=WaveshareEPaperTypeA)
elif model_type == 'b':
rhs = App.make_waveshare_epaper_type_b(spi_, cs, dc, model)
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epaper = Pvariable(config[CONF_ID], rhs, type=WaveshareEPaper)
else:
raise NotImplementedError()
if CONF_LAMBDA in config:
for lambda_ in process_lambda(config[CONF_LAMBDA], [(display.DisplayBufferRef, 'it')]):
yield
add(epaper.set_writer(lambda_))
if CONF_RESET_PIN in config:
for reset in gpio_output_pin_expression(config[CONF_RESET_PIN]):
yield
add(epaper.set_reset_pin(reset))
if CONF_BUSY_PIN in config:
for reset in gpio_input_pin_expression(config[CONF_BUSY_PIN]):
yield
add(epaper.set_busy_pin(reset))
if CONF_FULL_UPDATE_EVERY in config:
add(epaper.set_full_update_every(config[CONF_FULL_UPDATE_EVERY]))
display.setup_display(epaper, config)
setup_component(epaper, config)
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BUILD_FLAGS = '-DUSE_WAVESHARE_EPAPER'