Canbus + MCP2515 including ExtID support (#1384)

esphome/components/mcp2515/canbus.py

@@ -0,0 +1,47 @@
+import esphome.codegen as cg
+import esphome.config_validation as cv
+from esphome.components import spi, canbus
+from esphome.const import CONF_ID, CONF_MODE
+from esphome.components.canbus import CanbusComponent
+
+CODEOWNERS = ['@mvturnho', '@danielschramm']
+DEPENDENCIES = ['spi']
+
+CONF_CLOCK = 'clock'
+
+mcp2515_ns = cg.esphome_ns.namespace('mcp2515')
+mcp2515 = mcp2515_ns.class_('MCP2515', CanbusComponent, spi.SPIDevice)
+CanClock = mcp2515_ns.enum('CAN_CLOCK')
+McpMode = mcp2515_ns.enum('CANCTRL_REQOP_MODE')
+
+CAN_CLOCK = {
+    '8MHZ': CanClock.MCP_8MHZ,
+    '16MHZ': CanClock.MCP_16MHZ,
+    '20MHZ': CanClock.MCP_20MHZ,
+}
+
+MCP_MODE = {
+    'NORMAL': McpMode.CANCTRL_REQOP_NORMAL,
+    'LOOPBACK': McpMode.CANCTRL_REQOP_LOOPBACK,
+    'LISTENONLY': McpMode.CANCTRL_REQOP_LISTENONLY,
+}
+
+CONFIG_SCHEMA = canbus.CONFIG_SCHEMA.extend({
+    cv.GenerateID(): cv.declare_id(mcp2515),
+    cv.Optional(CONF_CLOCK, default='8MHZ'): cv.enum(CAN_CLOCK, upper=True),
+    cv.Optional(CONF_MODE, default='NORMAL'): cv.enum(MCP_MODE, upper=True),
+}).extend(spi.spi_device_schema(True))
+
+
+def to_code(config):
+    rhs = mcp2515.new()
+    var = cg.Pvariable(config[CONF_ID], rhs)
+    yield canbus.register_canbus(var, config)
+    if CONF_CLOCK in config:
+        canclock = CAN_CLOCK[config[CONF_CLOCK]]
+        cg.add(var.set_mcp_clock(canclock))
+    if CONF_MODE in config:
+        mode = MCP_MODE[config[CONF_MODE]]
+        cg.add(var.set_mcp_mode(mode))
+
+    yield spi.register_spi_device(var, config)