esphome/esphome/components/mcp2515/canbus.py
2021-05-24 10:58:29 +02:00

49 lines
1.5 KiB
Python

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.CANBUS_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))
async def to_code(config):
rhs = mcp2515.new()
var = cg.Pvariable(config[CONF_ID], rhs)
await 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))
await spi.register_spi_device(var, config)