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MCP3204 4-channel 12-bit ADC component (#2895)
Co-authored-by: Jesse Hills <3060199+jesserockz@users.noreply.github.com>
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8 changed files with 182 additions and 0 deletions
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@ -97,6 +97,7 @@ esphome/components/mcp23x08_base/* @jesserockz
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esphome/components/mcp23x17_base/* @jesserockz
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esphome/components/mcp23xxx_base/* @jesserockz
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esphome/components/mcp2515/* @danielschramm @mvturnho
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esphome/components/mcp3204/* @rsumner
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esphome/components/mcp47a1/* @jesserockz
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esphome/components/mcp9808/* @k7hpn
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esphome/components/md5/* @esphome/core
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27
esphome/components/mcp3204/__init__.py
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27
esphome/components/mcp3204/__init__.py
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import esphome.codegen as cg
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import esphome.config_validation as cv
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from esphome.components import spi
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from esphome.const import CONF_ID
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DEPENDENCIES = ["spi"]
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MULTI_CONF = True
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CODEOWNERS = ["@rsumner"]
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mcp3204_ns = cg.esphome_ns.namespace("mcp3204")
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MCP3204 = mcp3204_ns.class_("MCP3204", cg.Component, spi.SPIDevice)
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CONF_REFERENCE_VOLTAGE = "reference_voltage"
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CONFIG_SCHEMA = cv.Schema(
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{
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cv.GenerateID(): cv.declare_id(MCP3204),
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cv.Optional(CONF_REFERENCE_VOLTAGE, default="3.3V"): cv.voltage,
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}
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).extend(spi.spi_device_schema(cs_pin_required=True))
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async def to_code(config):
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var = cg.new_Pvariable(config[CONF_ID])
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cg.add(var.set_reference_voltage(config[CONF_REFERENCE_VOLTAGE]))
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await cg.register_component(var, config)
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await spi.register_spi_device(var, config)
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35
esphome/components/mcp3204/mcp3204.cpp
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35
esphome/components/mcp3204/mcp3204.cpp
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#include "mcp3204.h"
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#include "esphome/core/log.h"
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namespace esphome {
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namespace mcp3204 {
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static const char *const TAG = "mcp3204";
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float MCP3204::get_setup_priority() const { return setup_priority::HARDWARE; }
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void MCP3204::setup() {
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ESP_LOGCONFIG(TAG, "Setting up mcp3204");
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this->spi_setup();
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}
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void MCP3204::dump_config() {
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ESP_LOGCONFIG(TAG, "MCP3204:");
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LOG_PIN(" CS Pin:", this->cs_);
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ESP_LOGCONFIG(TAG, " Reference Voltage: %.2fV", this->reference_voltage_);
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}
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float MCP3204::read_data(uint8_t pin) {
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uint8_t adc_primary_config = 0b00000110 & 0b00000111;
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uint8_t adc_secondary_config = pin << 6;
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this->enable();
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this->transfer_byte(adc_primary_config);
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uint8_t adc_primary_byte = this->transfer_byte(adc_secondary_config);
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uint8_t adc_secondary_byte = this->transfer_byte(0x00);
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this->disable();
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uint16_t digital_value = (adc_primary_byte << 8 | adc_secondary_byte) & 0b111111111111;
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return float(digital_value) / 4096.000 * this->reference_voltage_;
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}
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} // namespace mcp3204
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} // namespace esphome
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28
esphome/components/mcp3204/mcp3204.h
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28
esphome/components/mcp3204/mcp3204.h
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#pragma once
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#include "esphome/core/component.h"
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#include "esphome/core/hal.h"
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#include "esphome/components/spi/spi.h"
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namespace esphome {
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namespace mcp3204 {
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class MCP3204 : public Component,
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public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_LOW, spi::CLOCK_PHASE_LEADING,
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spi::DATA_RATE_1MHZ> {
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public:
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MCP3204() = default;
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void set_reference_voltage(float reference_voltage) { this->reference_voltage_ = reference_voltage; }
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void setup() override;
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void dump_config() override;
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float get_setup_priority() const override;
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float read_data(uint8_t pin);
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protected:
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float reference_voltage_;
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};
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} // namespace mcp3204
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} // namespace esphome
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32
esphome/components/mcp3204/sensor/__init__.py
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32
esphome/components/mcp3204/sensor/__init__.py
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import esphome.codegen as cg
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import esphome.config_validation as cv
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from esphome.components import sensor, voltage_sampler
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from esphome.const import CONF_ID, CONF_NUMBER
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from .. import mcp3204_ns, MCP3204
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AUTO_LOAD = ["voltage_sampler"]
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DEPENDENCIES = ["mcp3204"]
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MCP3204Sensor = mcp3204_ns.class_(
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"MCP3204Sensor", sensor.Sensor, cg.PollingComponent, voltage_sampler.VoltageSampler
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)
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CONF_MCP3204_ID = "mcp3204_id"
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CONFIG_SCHEMA = sensor.SENSOR_SCHEMA.extend(
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{
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cv.GenerateID(): cv.declare_id(MCP3204Sensor),
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cv.GenerateID(CONF_MCP3204_ID): cv.use_id(MCP3204),
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cv.Required(CONF_NUMBER): cv.int_range(min=0, max=3),
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}
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).extend(cv.polling_component_schema("60s"))
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async def to_code(config):
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var = cg.new_Pvariable(
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config[CONF_ID],
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config[CONF_NUMBER],
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)
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await cg.register_parented(var, config[CONF_MCP3204_ID])
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await cg.register_component(var, config)
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await sensor.register_sensor(var, config)
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23
esphome/components/mcp3204/sensor/mcp3204_sensor.cpp
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23
esphome/components/mcp3204/sensor/mcp3204_sensor.cpp
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#include "mcp3204_sensor.h"
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#include "esphome/core/log.h"
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namespace esphome {
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namespace mcp3204 {
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static const char *const TAG = "mcp3204.sensor";
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MCP3204Sensor::MCP3204Sensor(uint8_t pin) : pin_(pin) {}
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float MCP3204Sensor::get_setup_priority() const { return setup_priority::DATA; }
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void MCP3204Sensor::dump_config() {
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LOG_SENSOR("", "MCP3204 Sensor", this);
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ESP_LOGCONFIG(TAG, " Pin: %u", this->pin_);
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LOG_UPDATE_INTERVAL(this);
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}
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float MCP3204Sensor::sample() { return this->parent_->read_data(this->pin_); }
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void MCP3204Sensor::update() { this->publish_state(this->sample()); }
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} // namespace mcp3204
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} // namespace esphome
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30
esphome/components/mcp3204/sensor/mcp3204_sensor.h
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30
esphome/components/mcp3204/sensor/mcp3204_sensor.h
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#pragma once
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#include "esphome/components/sensor/sensor.h"
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#include "esphome/components/voltage_sampler/voltage_sampler.h"
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#include "esphome/core/component.h"
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#include "esphome/core/hal.h"
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#include "../mcp3204.h"
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namespace esphome {
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namespace mcp3204 {
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class MCP3204Sensor : public PollingComponent,
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public Parented<MCP3204>,
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public sensor::Sensor,
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public voltage_sampler::VoltageSampler {
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public:
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MCP3204Sensor(uint8_t pin);
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void update() override;
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void dump_config() override;
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float get_setup_priority() const override;
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float sample() override;
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protected:
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uint8_t pin_;
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};
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} // namespace mcp3204
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} // namespace esphome
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@ -65,6 +65,9 @@ sx1509:
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- id: sx1509_hub
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address: 0x3E
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mcp3204:
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cs_pin: GPIO23
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sensor:
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- platform: homeassistant
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entity_id: sensor.hello_world
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- or:
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- throttle: "20min"
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- delta: 0.02
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- platform: mcp3204
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name: "MCP3204 Pin 1"
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number: 1
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#
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# platform sensor.apds9960 requires component apds9960
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