esphome/esphomeyaml/components/sensor/ads1115.py
2018-05-06 15:56:12 +02:00

62 lines
2 KiB
Python

import voluptuous as vol
import esphomeyaml.config_validation as cv
from esphomeyaml.components import sensor
from esphomeyaml.const import CONF_ADS1115_ID, CONF_GAIN, CONF_MULTIPLEXER, CONF_UPDATE_INTERVAL, \
CONF_NAME, CONF_ID
from esphomeyaml.helpers import RawExpression, get_variable, Pvariable
DEPENDENCIES = ['ads1115']
MUX = {
'A0_A1': 'ADS1115_MUX_P0_N1',
'A0_A3': 'ADS1115_MUX_P0_N3',
'A1_A3': 'ADS1115_MUX_P1_N3',
'A2_A3': 'ADS1115_MUX_P2_N3',
'A0_GND': 'ADS1115_MUX_P0_NG',
'A1_GND': 'ADS1115_MUX_P1_NG',
'A2_GND': 'ADS1115_MUX_P2_NG',
'A3_GND': 'ADS1115_MUX_P3_NG',
}
GAIN = {
'6.144': 'ADS1115_PGA_6P144',
'4.096': 'ADS1115_PGA_6P096',
'2.048': 'ADS1115_PGA_2P048',
'1.024': 'ADS1115_PGA_1P024',
'0.512': 'ADS1115_PGA_0P512',
'0.256': 'ADS1115_PGA_0P256',
}
def validate_gain(value):
if isinstance(value, float):
value = u'{:0.03f}'.format(value)
elif not isinstance(value, (str, unicode)):
raise vol.Invalid('invalid gain "{}"'.format(value))
if value not in GAIN:
raise vol.Invalid("Invalid gain, options are {}".format(', '.join(GAIN.keys())))
return value
PLATFORM_SCHEMA = sensor.PLATFORM_SCHEMA.extend({
cv.GenerateID('ads1115_sensor'): cv.register_variable_id,
vol.Required(CONF_MULTIPLEXER): vol.All(vol.Upper, vol.Any(*list(MUX.keys()))),
vol.Required(CONF_GAIN): validate_gain,
vol.Optional(CONF_ADS1115_ID): cv.variable_id,
vol.Optional(CONF_UPDATE_INTERVAL): cv.positive_not_null_time_period,
}).extend(sensor.MQTT_SENSOR_ID_SCHEMA.schema)
def to_code(config):
hub = get_variable(config.get(CONF_ADS1115_ID), u'sensor::ADS1115Component')
mux = RawExpression(MUX[config[CONF_MULTIPLEXER]])
gain = RawExpression(GAIN[config[CONF_GAIN]])
rhs = hub.get_sensor(config[CONF_NAME], mux, gain, config.get(CONF_UPDATE_INTERVAL))
sensor_ = Pvariable('sensor::ADS1115Sensor', config[CONF_ID], rhs)
sensor.register_sensor(sensor_, config)
BUILD_FLAGS = '-DUSE_ADS1115_SENSOR'