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Code Issues Releases Wiki Activity

ESP32 ADC use factory calibration data (#2574)

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This commit is contained in:
Otto Winter
2021-10-21 16:01:33 +02:00
committed by GitHub
parent 156104d5f5
commit cac5b356db
3 changed files with 177 additions and 146 deletions
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91
esphome/components/adc/sensor.py
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@@ -6,12 +6,21 @@ from esphome.const import (
CONF_ATTENUATION,
CONF_ID,
CONF_INPUT,
CONF_NUMBER,
CONF_PIN,
DEVICE_CLASS_VOLTAGE,
STATE_CLASS_MEASUREMENT,
UNIT_VOLT,
)
from esphome.core import CORE
from esphome.components.esp32 import get_esp32_variant
from esphome.components.esp32.const import (
VARIANT_ESP32,
VARIANT_ESP32C3,
VARIANT_ESP32H2,
VARIANT_ESP32S2,
VARIANT_ESP32S3,
)
AUTO_LOAD = ["voltage_sampler"]
@@ -24,21 +33,77 @@ ATTENUATION_MODES = {
"auto": "auto",
}
adc1_channel_t = cg.global_ns.enum("adc1_channel_t")
# From https://github.com/espressif/esp-idf/blob/master/components/driver/include/driver/adc_common.h
# pin to adc1 channel mapping
ESP32_VARIANT_ADC1_PIN_TO_CHANNEL = {
VARIANT_ESP32: {
36: adc1_channel_t.ADC1_CHANNEL_0,
37: adc1_channel_t.ADC1_CHANNEL_1,
38: adc1_channel_t.ADC1_CHANNEL_2,
39: adc1_channel_t.ADC1_CHANNEL_3,
32: adc1_channel_t.ADC1_CHANNEL_4,
33: adc1_channel_t.ADC1_CHANNEL_5,
34: adc1_channel_t.ADC1_CHANNEL_6,
35: adc1_channel_t.ADC1_CHANNEL_7,
},
VARIANT_ESP32S2: {
1: adc1_channel_t.ADC1_CHANNEL_0,
2: adc1_channel_t.ADC1_CHANNEL_1,
3: adc1_channel_t.ADC1_CHANNEL_2,
4: adc1_channel_t.ADC1_CHANNEL_3,
5: adc1_channel_t.ADC1_CHANNEL_4,
6: adc1_channel_t.ADC1_CHANNEL_5,
7: adc1_channel_t.ADC1_CHANNEL_6,
8: adc1_channel_t.ADC1_CHANNEL_7,
9: adc1_channel_t.ADC1_CHANNEL_8,
10: adc1_channel_t.ADC1_CHANNEL_9,
},
VARIANT_ESP32S3: {
1: adc1_channel_t.ADC1_CHANNEL_0,
2: adc1_channel_t.ADC1_CHANNEL_1,
3: adc1_channel_t.ADC1_CHANNEL_2,
4: adc1_channel_t.ADC1_CHANNEL_3,
5: adc1_channel_t.ADC1_CHANNEL_4,
6: adc1_channel_t.ADC1_CHANNEL_5,
7: adc1_channel_t.ADC1_CHANNEL_6,
8: adc1_channel_t.ADC1_CHANNEL_7,
9: adc1_channel_t.ADC1_CHANNEL_8,
10: adc1_channel_t.ADC1_CHANNEL_9,
},
VARIANT_ESP32C3: {
0: adc1_channel_t.ADC1_CHANNEL_0,
1: adc1_channel_t.ADC1_CHANNEL_1,
2: adc1_channel_t.ADC1_CHANNEL_2,
3: adc1_channel_t.ADC1_CHANNEL_3,
4: adc1_channel_t.ADC1_CHANNEL_4,
},
VARIANT_ESP32H2: {
0: adc1_channel_t.ADC1_CHANNEL_0,
1: adc1_channel_t.ADC1_CHANNEL_1,
2: adc1_channel_t.ADC1_CHANNEL_2,
3: adc1_channel_t.ADC1_CHANNEL_3,
4: adc1_channel_t.ADC1_CHANNEL_4,
},
}
def validate_adc_pin(value):
if str(value).upper() == "VCC":
return cv.only_on_esp8266("VCC")
if CORE.is_esp32:
from esphome.components.esp32 import is_esp32c3
value = pins.internal_gpio_input_pin_number(value)
if is_esp32c3():
if not (0 <= value <= 4): # ADC1
raise cv.Invalid("ESP32-C3: Only pins 0 though 4 support ADC.")
elif not (32 <= value <= 39): # ADC1
raise cv.Invalid("ESP32: Only pins 32 though 39 support ADC.")
elif CORE.is_esp8266:
variant = get_esp32_variant()
if variant not in ESP32_VARIANT_ADC1_PIN_TO_CHANNEL:
raise cv.Invalid(f"This ESP32 variant ({variant}) is not supported")
if value not in ESP32_VARIANT_ADC1_PIN_TO_CHANNEL[variant]:
raise cv.Invalid(f"{variant} doesn't support ADC on this pin")
return pins.internal_gpio_input_pin_schema(value)
if CORE.is_esp8266:
from esphome.components.esp8266.gpio import CONF_ANALOG
value = pins.internal_gpio_pin_number({CONF_ANALOG: True, CONF_INPUT: True})(
@@ -50,10 +115,8 @@ def validate_adc_pin(value):
return pins.gpio_pin_schema(
{CONF_ANALOG: True, CONF_INPUT: True}, internal=True
)(value)
else:
raise NotImplementedError
return pins.internal_gpio_input_pin_schema(value)
raise NotImplementedError
adc_ns = cg.esphome_ns.namespace("adc")
@@ -97,3 +160,9 @@ async def to_code(config):
cg.add(var.set_autorange(cg.global_ns.true))
else:
cg.add(var.set_attenuation(config[CONF_ATTENUATION]))
if CORE.is_esp32:
variant = get_esp32_variant()
pin_num = config[CONF_PIN][CONF_NUMBER]
chan = ESP32_VARIANT_ADC1_PIN_TO_CHANNEL[variant][pin_num]
cg.add(var.set_channel(chan))