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Code Issues Releases Wiki Activity

Extend ESP32 CAN bit rates /bus speed support (#5280)

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Co-authored-by: Jesse Hills <3060199+jesserockz@users.noreply.github.com>
Co-authored-by: mkaiser <mkaiser@techfak.uni-bielefeld.de>
This commit is contained in:
mkaiser
2023-09-05 00:27:58 +02:00
committed by GitHub
parent a9630ac847
commit d382ca2401
4 changed files with 86 additions and 3 deletions
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51
esphome/components/esp32_can/canbus.py
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@@ -5,6 +5,15 @@ from esphome.components import canbus
from esphome.const import CONF_ID, CONF_RX_PIN, CONF_TX_PIN
from esphome.components.canbus import CanbusComponent, CanSpeed, CONF_BIT_RATE
from esphome.components.esp32 import get_esp32_variant
from esphome.components.esp32.const import (
VARIANT_ESP32,
VARIANT_ESP32S2,
VARIANT_ESP32S3,
VARIANT_ESP32C3,
VARIANT_ESP32H2,
)
CODEOWNERS = ["@Sympatron"]
DEPENDENCIES = ["esp32"]
@@ -12,19 +21,57 @@ esp32_can_ns = cg.esphome_ns.namespace("esp32_can")
esp32_can = esp32_can_ns.class_("ESP32Can", CanbusComponent)
# Currently the driver only supports a subset of the bit rates defined in canbus
CAN_SPEEDS = {
# The supported bit rates differ between ESP32 variants.
# See ESP-IDF Programming Guide --> API Reference --> Two-Wire Automotive Interface (TWAI)
CAN_SPEEDS_ESP32 = {
"25KBPS": CanSpeed.CAN_25KBPS,
"50KBPS": CanSpeed.CAN_50KBPS,
"100KBPS": CanSpeed.CAN_100KBPS,
"125KBPS": CanSpeed.CAN_125KBPS,
"250KBPS": CanSpeed.CAN_250KBPS,
"500KBPS": CanSpeed.CAN_500KBPS,
"800KBPS": CanSpeed.CAN_800KBPS,
"1000KBPS": CanSpeed.CAN_1000KBPS,
}
CAN_SPEEDS_ESP32_S2 = {
"1KBPS": CanSpeed.CAN_1KBPS,
"5KBPS": CanSpeed.CAN_5KBPS,
"10KBPS": CanSpeed.CAN_10KBPS,
"12K5BPS": CanSpeed.CAN_12K5BPS,
"16KBPS": CanSpeed.CAN_16KBPS,
"20KBPS": CanSpeed.CAN_20KBPS,
**CAN_SPEEDS_ESP32,
}
CAN_SPEEDS_ESP32_S3 = {**CAN_SPEEDS_ESP32_S2}
CAN_SPEEDS_ESP32_C3 = {**CAN_SPEEDS_ESP32_S2}
CAN_SPEEDS_ESP32_H2 = {**CAN_SPEEDS_ESP32_S2}
CAN_SPEEDS = {
VARIANT_ESP32: CAN_SPEEDS_ESP32,
VARIANT_ESP32S2: CAN_SPEEDS_ESP32_S2,
VARIANT_ESP32S3: CAN_SPEEDS_ESP32_S3,
VARIANT_ESP32C3: CAN_SPEEDS_ESP32_C3,
VARIANT_ESP32H2: CAN_SPEEDS_ESP32_H2,
}
def validate_bit_rate(value):
variant = get_esp32_variant()
if variant not in CAN_SPEEDS:
raise cv.Invalid(f"{variant} is not supported by component {esp32_can_ns}")
value = value.upper()
if value not in CAN_SPEEDS[variant]:
raise cv.Invalid(f"Bit rate {value} is not supported on {variant}")
return cv.enum(CAN_SPEEDS[variant])(value)
CONFIG_SCHEMA = canbus.CANBUS_SCHEMA.extend(
{
cv.GenerateID(): cv.declare_id(esp32_can),
cv.Optional(CONF_BIT_RATE, default="125KBPS"): cv.enum(CAN_SPEEDS, upper=True),
cv.Optional(CONF_BIT_RATE, default="125KBPS"): validate_bit_rate,
cv.Required(CONF_RX_PIN): pins.internal_gpio_input_pin_number,
cv.Required(CONF_TX_PIN): pins.internal_gpio_output_pin_number,
}