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Support for MCP9600 Thermocouple Amplifier (#3700)
Co-authored-by: Jesse Hills <3060199+jesserockz@users.noreply.github.com>
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MrEditor97
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6 changed files with 256 additions and 0 deletions
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@ -122,6 +122,7 @@ esphome/components/mcp2515/* @danielschramm @mvturnho
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esphome/components/mcp3204/* @rsumner
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esphome/components/mcp4728/* @berfenger
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esphome/components/mcp47a1/* @jesserockz
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esphome/components/mcp9600/* @MrEditor97
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esphome/components/mcp9808/* @k7hpn
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esphome/components/md5/* @esphome/core
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esphome/components/mdns/* @esphome/core
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0
esphome/components/mcp9600/__init__.py
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0
esphome/components/mcp9600/__init__.py
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115
esphome/components/mcp9600/mcp9600.cpp
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115
esphome/components/mcp9600/mcp9600.cpp
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@ -0,0 +1,115 @@
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#include "mcp9600.h"
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#include "esphome/core/log.h"
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namespace esphome {
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namespace mcp9600 {
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static const char *const TAG = "mcp9600";
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static const uint8_t MCP9600_REGISTER_HOT_JUNCTION = 0x00;
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// static const uint8_t MCP9600_REGISTER_JUNCTION_DELTA = 0x01; // Unused, but kept for future reference
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static const uint8_t MCP9600_REGISTER_COLD_JUNTION = 0x02;
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// static const uint8_t MCP9600_REGISTER_RAW_DATA_ADC = 0x03; // Unused, but kept for future reference
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static const uint8_t MCP9600_REGISTER_STATUS = 0x04;
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static const uint8_t MCP9600_REGISTER_SENSOR_CONFIG = 0x05;
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static const uint8_t MCP9600_REGISTER_CONFIG = 0x06;
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static const uint8_t MCP9600_REGISTER_ALERT1_CONFIG = 0x08;
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static const uint8_t MCP9600_REGISTER_ALERT2_CONFIG = 0x09;
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static const uint8_t MCP9600_REGISTER_ALERT3_CONFIG = 0x0A;
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static const uint8_t MCP9600_REGISTER_ALERT4_CONFIG = 0x0B;
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static const uint8_t MCP9600_REGISTER_ALERT1_HYSTERESIS = 0x0C;
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static const uint8_t MCP9600_REGISTER_ALERT2_HYSTERESIS = 0x0D;
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static const uint8_t MCP9600_REGISTER_ALERT3_HYSTERESIS = 0x0E;
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static const uint8_t MCP9600_REGISTER_ALERT4_HYSTERESIS = 0x0F;
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static const uint8_t MCP9600_REGISTER_ALERT1_LIMIT = 0x10;
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static const uint8_t MCP9600_REGISTER_ALERT2_LIMIT = 0x11;
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static const uint8_t MCP9600_REGISTER_ALERT3_LIMIT = 0x12;
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static const uint8_t MCP9600_REGISTER_ALERT4_LIMIT = 0x13;
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static const uint8_t MCP9600_REGISTER_DEVICE_ID = 0x20;
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void MCP9600Component::setup() {
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ESP_LOGCONFIG(TAG, "Setting up MCP9600...");
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uint16_t dev_id = 0;
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this->read_byte_16(MCP9600_REGISTER_DEVICE_ID, &dev_id);
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this->device_id_ = (uint8_t)(dev_id >> 8);
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// Allows both MCP9600's and MCP9601's to be connected.
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if (this->device_id_ != (uint8_t) 0x40 && this->device_id_ != (uint8_t) 0x41) {
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this->error_code_ = COMMUNICATION_FAILED;
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this->mark_failed();
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return;
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}
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bool success = this->write_byte(MCP9600_REGISTER_STATUS, 0x00);
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success |= this->write_byte(MCP9600_REGISTER_SENSOR_CONFIG, uint8_t(0x00 | thermocouple_type_ << 4));
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success |= this->write_byte(MCP9600_REGISTER_CONFIG, 0x00);
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success |= this->write_byte(MCP9600_REGISTER_ALERT1_CONFIG, 0x00);
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success |= this->write_byte(MCP9600_REGISTER_ALERT2_CONFIG, 0x00);
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success |= this->write_byte(MCP9600_REGISTER_ALERT3_CONFIG, 0x00);
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success |= this->write_byte(MCP9600_REGISTER_ALERT4_CONFIG, 0x00);
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success |= this->write_byte(MCP9600_REGISTER_ALERT1_HYSTERESIS, 0x00);
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success |= this->write_byte(MCP9600_REGISTER_ALERT2_HYSTERESIS, 0x00);
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success |= this->write_byte(MCP9600_REGISTER_ALERT3_HYSTERESIS, 0x00);
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success |= this->write_byte(MCP9600_REGISTER_ALERT4_HYSTERESIS, 0x00);
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success |= this->write_byte_16(MCP9600_REGISTER_ALERT1_LIMIT, 0x0000);
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success |= this->write_byte_16(MCP9600_REGISTER_ALERT2_LIMIT, 0x0000);
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success |= this->write_byte_16(MCP9600_REGISTER_ALERT3_LIMIT, 0x0000);
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success |= this->write_byte_16(MCP9600_REGISTER_ALERT4_LIMIT, 0x0000);
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if (!success) {
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this->error_code_ = FAILED_TO_UPDATE_CONFIGURATION;
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this->mark_failed();
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return;
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}
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}
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void MCP9600Component::dump_config() {
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ESP_LOGCONFIG(TAG, "MCP9600:");
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LOG_I2C_DEVICE(this);
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LOG_UPDATE_INTERVAL(this);
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ESP_LOGCONFIG(TAG, " Device ID: 0x%x", this->device_id_);
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LOG_SENSOR(" ", "Hot Junction Temperature", this->hot_junction_sensor_);
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LOG_SENSOR(" ", "Cold Junction Temperature", this->cold_junction_sensor_);
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switch (this->error_code_) {
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case COMMUNICATION_FAILED:
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ESP_LOGE(TAG, "Connected device does not match a known MCP9600 or MCP901 sensor");
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break;
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case FAILED_TO_UPDATE_CONFIGURATION:
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ESP_LOGE(TAG, "Failed to update device configuration");
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break;
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case NONE:
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default:
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break;
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}
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}
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void MCP9600Component::update() {
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if (this->hot_junction_sensor_ != nullptr) {
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uint16_t raw_hot_junction_temperature;
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if (!this->read_byte_16(MCP9600_REGISTER_HOT_JUNCTION, &raw_hot_junction_temperature)) {
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this->status_set_warning();
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return;
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}
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float hot_junction_temperature = int16_t(raw_hot_junction_temperature) * 0.0625;
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this->hot_junction_sensor_->publish_state(hot_junction_temperature);
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}
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if (this->cold_junction_sensor_ != nullptr) {
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uint16_t raw_cold_junction_temperature;
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if (!this->read_byte_16(MCP9600_REGISTER_COLD_JUNTION, &raw_cold_junction_temperature)) {
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this->status_set_warning();
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return;
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}
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float cold_junction_temperature = int16_t(raw_cold_junction_temperature) * 0.0625;
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this->cold_junction_sensor_->publish_state(cold_junction_temperature);
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}
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this->status_clear_warning();
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}
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} // namespace mcp9600
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} // namespace esphome
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51
esphome/components/mcp9600/mcp9600.h
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51
esphome/components/mcp9600/mcp9600.h
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@ -0,0 +1,51 @@
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#pragma once
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#include "esphome/core/component.h"
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#include "esphome/components/sensor/sensor.h"
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#include "esphome/components/i2c/i2c.h"
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namespace esphome {
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namespace mcp9600 {
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enum MCP9600ThermocoupleType : uint8_t {
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MCP9600_THERMOCOUPLE_TYPE_K = 0b000,
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MCP9600_THERMOCOUPLE_TYPE_J = 0b001,
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MCP9600_THERMOCOUPLE_TYPE_T = 0b010,
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MCP9600_THERMOCOUPLE_TYPE_N = 0b011,
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MCP9600_THERMOCOUPLE_TYPE_S = 0b100,
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MCP9600_THERMOCOUPLE_TYPE_E = 0b101,
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MCP9600_THERMOCOUPLE_TYPE_B = 0b110,
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MCP9600_THERMOCOUPLE_TYPE_R = 0b111,
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};
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class MCP9600Component : public PollingComponent, public i2c::I2CDevice {
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public:
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void setup() override;
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void dump_config() override;
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void update() override;
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float get_setup_priority() const override { return setup_priority::DATA; }
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void set_hot_junction(sensor::Sensor *hot_junction) { this->hot_junction_sensor_ = hot_junction; }
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void set_cold_junction(sensor::Sensor *cold_junction) { this->cold_junction_sensor_ = cold_junction; }
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void set_thermocouple_type(MCP9600ThermocoupleType thermocouple_type) {
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this->thermocouple_type_ = thermocouple_type;
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};
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protected:
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uint8_t device_id_{0};
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sensor::Sensor *hot_junction_sensor_{nullptr};
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sensor::Sensor *cold_junction_sensor_{nullptr};
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MCP9600ThermocoupleType thermocouple_type_{MCP9600_THERMOCOUPLE_TYPE_K};
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enum ErrorCode {
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NONE,
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COMMUNICATION_FAILED,
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FAILED_TO_UPDATE_CONFIGURATION,
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} error_code_{NONE};
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};
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} // namespace mcp9600
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} // namespace esphome
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81
esphome/components/mcp9600/sensor.py
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81
esphome/components/mcp9600/sensor.py
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@ -0,0 +1,81 @@
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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 i2c, sensor
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from esphome.const import (
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CONF_ID,
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DEVICE_CLASS_TEMPERATURE,
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STATE_CLASS_MEASUREMENT,
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UNIT_CELSIUS,
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)
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CONF_THERMOCOUPLE_TYPE = "thermocouple_type"
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CONF_HOT_JUNCTION = "hot_junction"
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CONF_COLD_JUNCTION = "cold_junction"
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DEPENDENCIES = ["i2c"]
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CODEOWNERS = ["@MrEditor97"]
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mcp9600_ns = cg.esphome_ns.namespace("mcp9600")
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MCP9600Component = mcp9600_ns.class_(
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"MCP9600Component", cg.PollingComponent, i2c.I2CDevice
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)
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MCP9600ThermocoupleType = mcp9600_ns.enum("MCP9600ThermocoupleType")
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THERMOCOUPLE_TYPE = {
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"K": MCP9600ThermocoupleType.MCP9600_THERMOCOUPLE_TYPE_K,
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"J": MCP9600ThermocoupleType.MCP9600_THERMOCOUPLE_TYPE_J,
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"T": MCP9600ThermocoupleType.MCP9600_THERMOCOUPLE_TYPE_T,
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"N": MCP9600ThermocoupleType.MCP9600_THERMOCOUPLE_TYPE_N,
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"S": MCP9600ThermocoupleType.MCP9600_THERMOCOUPLE_TYPE_S,
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"E": MCP9600ThermocoupleType.MCP9600_THERMOCOUPLE_TYPE_E,
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"B": MCP9600ThermocoupleType.MCP9600_THERMOCOUPLE_TYPE_B,
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"R": MCP9600ThermocoupleType.MCP9600_THERMOCOUPLE_TYPE_R,
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}
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CONFIG_SCHEMA = (
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cv.Schema(
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{
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cv.GenerateID(): cv.declare_id(MCP9600Component),
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cv.Optional(CONF_THERMOCOUPLE_TYPE, default="K"): cv.enum(
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THERMOCOUPLE_TYPE, upper=True
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),
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cv.Optional(CONF_HOT_JUNCTION): sensor.sensor_schema(
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unit_of_measurement=UNIT_CELSIUS,
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accuracy_decimals=1,
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device_class=DEVICE_CLASS_TEMPERATURE,
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state_class=STATE_CLASS_MEASUREMENT,
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),
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cv.Optional(CONF_COLD_JUNCTION): sensor.sensor_schema(
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unit_of_measurement=UNIT_CELSIUS,
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accuracy_decimals=1,
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device_class=DEVICE_CLASS_TEMPERATURE,
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state_class=STATE_CLASS_MEASUREMENT,
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),
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}
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)
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.extend(cv.polling_component_schema("60s"))
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.extend(i2c.i2c_device_schema(0x67))
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)
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FINAL_VALIDATE_SCHEMA = i2c.final_validate_device_schema(
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"mcp9600", min_frequency="100khz"
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)
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async def to_code(config):
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var = cg.new_Pvariable(config[CONF_ID])
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await cg.register_component(var, config)
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await i2c.register_i2c_device(var, config)
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cg.add(var.set_thermocouple_type(config[CONF_THERMOCOUPLE_TYPE]))
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if CONF_HOT_JUNCTION in config:
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conf = config[CONF_HOT_JUNCTION]
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sens = await sensor.new_sensor(conf)
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cg.add(var.set_hot_junction(sens))
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if CONF_COLD_JUNCTION in config:
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conf = config[CONF_COLD_JUNCTION]
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sens = await sensor.new_sensor(conf)
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cg.add(var.set_cold_junction(sens))
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@ -38,6 +38,7 @@ uart:
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baud_rate: 19200
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i2c:
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frequency: 100khz
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modbus:
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uart_id: uart1
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@ -328,6 +329,13 @@ sensor:
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store_baseline: true
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address: 0x69
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- platform: mcp9600
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thermocouple_type: K
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hot_junction:
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name: "Thermocouple Temperature"
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cold_junction:
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name: "Ambient Temperature"
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script:
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- id: automation_test
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then:
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