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Add MCP4725 DAC Component (#1418)
* Add MCP4725 DAC * Fix lint * Fix lint * Fix lint * Lint & cleanup * Lint again * One more lint * add test Co-authored-by: Guillermo Ruffino <glm.net@gmail.com>
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esphome/components/mcp4725/__init__.py
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esphome/components/mcp4725/__init__.py
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esphome/components/mcp4725/mcp4725.cpp
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esphome/components/mcp4725/mcp4725.cpp
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#include "mcp4725.h"
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#include "esphome/core/log.h"
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namespace esphome {
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namespace mcp4725 {
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static const char *TAG = "mcp4725";
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void MCP4725::setup() {
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ESP_LOGCONFIG(TAG, "Setting up MCP4725 (0x%02X)...", this->address_);
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this->parent_->raw_begin_transmission(this->address_);
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if (!this->parent_->raw_end_transmission(this->address_)) {
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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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}
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void MCP4725::dump_config() {
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LOG_I2C_DEVICE(this);
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if (this->error_code_ == COMMUNICATION_FAILED) {
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ESP_LOGE(TAG, "Communication with MCP4725 failed!");
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}
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}
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// https://learn.sparkfun.com/tutorials/mcp4725-digital-to-analog-converter-hookup-guide?_ga=2.176055202.1402343014.1607953301-893095255.1606753886
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void MCP4725::write_state(float state) {
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const uint16_t value = (uint16_t) round(state * (pow(2, MCP4725_RES) - 1));
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this->write_byte_16(64, value << 4);
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}
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} // namespace mcp4725
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} // namespace esphome
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esphome/components/mcp4725/mcp4725.h
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esphome/components/mcp4725/mcp4725.h
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#pragma once
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#include "esphome/components/output/float_output.h"
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#include "esphome/core/component.h"
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#include "esphome/components/i2c/i2c.h"
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static const uint8_t MCP4725_ADDR = 0x60;
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static const uint8_t MCP4725_RES = 12;
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namespace esphome {
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namespace mcp4725 {
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class MCP4725 : public Component, public output::FloatOutput, 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 write_state(float state) override;
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protected:
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enum ErrorCode { NONE = 0, COMMUNICATION_FAILED } error_code_{NONE};
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};
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} // namespace mcp4725
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} // namespace esphome
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esphome/components/mcp4725/output.py
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esphome/components/mcp4725/output.py
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import esphome.config_validation as cv
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import esphome.codegen as cg
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from esphome.components import output, i2c
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from esphome.const import CONF_ID
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DEPENDENCIES = ['i2c']
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mcp4725 = cg.esphome_ns.namespace('mcp4725')
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MCP4725 = mcp4725.class_('MCP4725', output.FloatOutput, cg.Component, i2c.I2CDevice)
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CONFIG_SCHEMA = output.FLOAT_OUTPUT_SCHEMA.extend({
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cv.Required(CONF_ID): cv.declare_id(MCP4725),
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}).extend(cv.COMPONENT_SCHEMA).extend(i2c.i2c_device_schema(0x60))
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def to_code(config):
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var = cg.new_Pvariable(config[CONF_ID])
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yield cg.register_component(var, config)
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yield i2c.register_i2c_device(var, config)
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yield output.register_output(var, config)
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@ -1192,6 +1192,8 @@ output:
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- platform: esp32_dac
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- platform: esp32_dac
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pin: GPIO25
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pin: GPIO25
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id: dac_output
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id: dac_output
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- platform: mcp4725
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id: mcp4725_dac_output
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e131:
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e131:
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@ -1561,6 +1563,9 @@ switch:
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- output.set_level:
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- output.set_level:
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id: dac_output
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id: dac_output
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level: !lambda 'return 0.5;'
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level: !lambda 'return 0.5;'
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- output.set_level:
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id: mcp4725_dac_output
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level: !lambda 'return 0.5;'
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turn_off_action:
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turn_off_action:
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- switch.turn_on: living_room_lights_off
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- switch.turn_on: living_room_lights_off
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restore_state: False
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restore_state: False
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