Nextion upload and sensors (#1464)

Co-authored-by: Senex Crenshaw <senexcrenshaw@gmail.com>

esphome/components/nextion/sensor/__init__.py

@@ -0,0 +1,99 @@
+import esphome.codegen as cg
+import esphome.config_validation as cv
+from esphome.components import sensor
+
+from esphome.const import (
+    CONF_ID,
+    UNIT_EMPTY,
+    ICON_EMPTY,
+    CONF_COMPONENT_ID,
+    DEVICE_CLASS_EMPTY,
+)
+from .. import nextion_ns, CONF_NEXTION_ID
+
+from ..base_component import (
+    setup_component_core_,
+    CONFIG_SENSOR_COMPONENT_SCHEMA,
+    CONF_VARIABLE_NAME,
+    CONF_COMPONENT_NAME,
+    CONF_PRECISION,
+    CONF_WAVE_CHANNEL_ID,
+    CONF_WAVE_MAX_VALUE,
+    CONF_WAVEFORM_SEND_LAST_VALUE,
+    CONF_WAVE_MAX_LENGTH,
+)
+
+
+CODEOWNERS = ["@senexcrenshaw"]
+
+NextionSensor = nextion_ns.class_("NextionSensor", sensor.Sensor, cg.PollingComponent)
+
+
+def CheckWaveID(value):
+    value = cv.int_(value)
+    if value < 0 or value > 3:
+        raise cv.Invalid(f"Valid range for {CONF_WAVE_CHANNEL_ID} is 0-3")
+    return value
+
+
+def _validate(config):
+    if CONF_WAVE_CHANNEL_ID in config and CONF_COMPONENT_ID not in config:
+        raise cv.Invalid(
+            f"{CONF_COMPONENT_ID} is required when {CONF_WAVE_CHANNEL_ID} is set"
+        )
+
+    return config
+
+
+CONFIG_SCHEMA = cv.All(
+    sensor.sensor_schema(UNIT_EMPTY, ICON_EMPTY, 2, DEVICE_CLASS_EMPTY)
+    .extend(
+        {
+            cv.GenerateID(): cv.declare_id(NextionSensor),
+            cv.Optional(CONF_PRECISION, default=0): cv.int_range(min=0, max=8),
+            cv.Optional(CONF_WAVE_CHANNEL_ID): CheckWaveID,
+            cv.Optional(CONF_COMPONENT_ID): cv.uint8_t,
+            cv.Optional(CONF_WAVE_MAX_LENGTH, default=255): cv.int_range(
+                min=1, max=1024
+            ),
+            cv.Optional(CONF_WAVE_MAX_VALUE, default=100): cv.int_range(
+                min=1, max=1024
+            ),
+            cv.Optional(CONF_WAVEFORM_SEND_LAST_VALUE, default=True): cv.boolean,
+        }
+    )
+    .extend(CONFIG_SENSOR_COMPONENT_SCHEMA)
+    .extend(cv.polling_component_schema("never")),
+    cv.has_exactly_one_key(CONF_COMPONENT_ID, CONF_COMPONENT_NAME, CONF_VARIABLE_NAME),
+    _validate,
+)
+
+
+async def to_code(config):
+
+    hub = await cg.get_variable(config[CONF_NEXTION_ID])
+    var = cg.new_Pvariable(config[CONF_ID], hub)
+    await cg.register_component(var, config)
+    await sensor.register_sensor(var, config)
+
+    cg.add(hub.register_sensor_component(var))
+
+    await setup_component_core_(var, config, ".val")
+
+    if CONF_PRECISION in config:
+        cg.add(var.set_precision(config[CONF_PRECISION]))
+
+    if CONF_COMPONENT_ID in config:
+        cg.add(var.set_component_id(config[CONF_COMPONENT_ID]))
+
+    if CONF_WAVE_CHANNEL_ID in config:
+        cg.add(var.set_wave_channel_id(config[CONF_WAVE_CHANNEL_ID]))
+
+    if CONF_WAVEFORM_SEND_LAST_VALUE in config:
+        cg.add(var.set_waveform_send_last_value(config[CONF_WAVEFORM_SEND_LAST_VALUE]))
+
+    if CONF_WAVE_MAX_VALUE in config:
+        cg.add(var.set_wave_max_value(config[CONF_WAVE_MAX_VALUE]))
+
+    if CONF_WAVE_MAX_LENGTH in config:
+        cg.add(var.set_wave_max_length(config[CONF_WAVE_MAX_LENGTH]))