Add PN532 On Tag Trigger (#189)

* Add PN532 On Tag Trigger

* Lint

* Fix 😶

* Fix

esphomeyaml/components/pn532.py

@@ -1,21 +1,26 @@
 import voluptuous as vol
 
 import esphomeyaml.config_validation as cv
-from esphomeyaml import pins
+from esphomeyaml import pins, automation
 from esphomeyaml.components import binary_sensor
 from esphomeyaml.components.spi import SPIComponent
-from esphomeyaml.const import CONF_CS_PIN, CONF_ID, CONF_SPI_ID, CONF_UPDATE_INTERVAL
+from esphomeyaml.const import CONF_CS_PIN, CONF_ID, CONF_SPI_ID, CONF_UPDATE_INTERVAL, \
-from esphomeyaml.helpers import App, Pvariable, get_variable, gpio_output_pin_expression
+    CONF_ON_TAG, CONF_TRIGGER_ID
+from esphomeyaml.helpers import App, Pvariable, get_variable, gpio_output_pin_expression, std_string
 
 DEPENDENCIES = ['spi']
 
 PN532Component = binary_sensor.binary_sensor_ns.PN532Component
+PN532Trigger = binary_sensor.binary_sensor_ns.PN532Trigger
 
 CONFIG_SCHEMA = vol.All(cv.ensure_list, [vol.Schema({
     cv.GenerateID(): cv.declare_variable_id(PN532Component),
     cv.GenerateID(CONF_SPI_ID): cv.use_variable_id(SPIComponent),
     vol.Required(CONF_CS_PIN): pins.gpio_output_pin_schema,
     vol.Optional(CONF_UPDATE_INTERVAL): cv.update_interval,
+    vol.Optional(CONF_ON_TAG): vol.All(cv.ensure_list, [automation.validate_automation({
+        cv.GenerateID(CONF_TRIGGER_ID): cv.declare_variable_id(PN532Trigger),
+    })]),
 })])
 
 
@@ -28,7 +33,11 @@ def to_code(config):
         for cs in gpio_output_pin_expression(conf[CONF_CS_PIN]):
             yield
         rhs = App.make_pn532_component(spi, cs, conf.get(CONF_UPDATE_INTERVAL))
-        Pvariable(conf[CONF_ID], rhs)
+        pn532 = Pvariable(conf[CONF_ID], rhs)
+
+        for conf_ in conf.get(CONF_ON_TAG, []):
+            trigger = Pvariable(conf_[CONF_TRIGGER_ID], pn532.make_trigger())
+            automation.build_automation(trigger, std_string, conf_)
 
 
 BUILD_FLAGS = '-DUSE_PN532'

esphomeyaml/const.py

@@ -341,6 +341,7 @@ CONF_DAYS_OF_WEEK = 'days_of_week'
 CONF_CRON = 'cron'
 CONF_POWER_SAVE_MODE = 'power_save_mode'
 CONF_POWER_ON_VALUE = 'power_on_value'
+CONF_ON_TAG = 'on_tag'
 
 ALLOWED_NAME_CHARS = u'abcdefghijklmnopqrstuvwxyz0123456789_'
 ARDUINO_VERSION_ESP32_DEV = 'https://github.com/platformio/platform-espressif32.git#feature/stage'

tests/test1.yaml

@@ -878,6 +878,12 @@ status_led:
 pn532:
   cs_pin: GPIO23
   update_interval: 1s
+  on_tag:
+    - lambda: |-
+        ESP_LOGD("main", "Found tag %s", x.c_str());
+    - mqtt.publish:
+        topic: the/topic
+        payload: !lambda 'return x;'
 
 rdm6300: