Smallish Update

esphomeyaml/components/spi.py

@@ -0,0 +1,37 @@
+import voluptuous as vol
+
+import esphomeyaml.config_validation as cv
+from esphomeyaml import pins
+from esphomeyaml.const import CONF_CLK, CONF_ID, CONF_MISO, CONF_MOSI
+from esphomeyaml.helpers import App, Pvariable, esphomelib_ns, gpio_input_pin_expression, \
+    gpio_output_pin_expression
+
+SPIComponent = esphomelib_ns.SPIComponent
+
+SPI_SCHEMA = vol.Schema({
+    cv.GenerateID(): cv.declare_variable_id(SPIComponent),
+    vol.Required(CONF_CLK): pins.gpio_output_pin_schema,
+    vol.Required(CONF_MISO): pins.gpio_input_pin_schema,
+    vol.Optional(CONF_MOSI): pins.gpio_output_pin_schema,
+})
+
+CONFIG_SCHEMA = vol.All(cv.ensure_list, [SPI_SCHEMA])
+
+
+def to_code(config):
+    for conf in config:
+        clk = None
+        for clk in gpio_output_pin_expression(conf[CONF_CLK]):
+            yield
+        miso = None
+        for miso in gpio_input_pin_expression(conf[CONF_MISO]):
+            yield
+        mosi = None
+        if CONF_MOSI in conf:
+            for mosi in gpio_output_pin_expression(conf[CONF_MOSI]):
+                yield
+        rhs = App.init_spi(clk, miso, mosi)
+        Pvariable(conf[CONF_ID], rhs)
+
+
+BUILD_FLAGS = '-DUSE_SPI'