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117 lines
3.6 KiB
C++
117 lines
3.6 KiB
C++
#pragma once
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#include "esphome/core/component.h"
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#include "esphome/components/i2c/i2c.h"
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namespace esphome {
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namespace mcp4461 {
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static const LogString *const LOG_PARENT_FAILED_STR = LOG_STR("Parent MCP4461 component has failed! Aborting");
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struct WiperState {
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bool terminal_a = true;
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bool terminal_b = true;
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bool terminal_w = true;
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bool terminal_hw = true;
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uint16_t state = 0;
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bool enabled = true;
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bool wiper_lock_active = false;
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optional<float> initial_value;
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};
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enum class Mcp4461Defaults : uint8_t { WIPER_VALUE = 0x80 };
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enum class Mcp4461Commands : uint8_t { WRITE = 0x00, INCREMENT = 0x04, DECREMENT = 0x08, READ = 0x0C };
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enum class Mcp4461Addresses : uint8_t {
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MCP4461_VW0 = 0x00,
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MCP4461_VW1 = 0x10,
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MCP4461_VW2 = 0x60,
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MCP4461_VW3 = 0x70,
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MCP4461_STATUS = 0x50,
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MCP4461_TCON0 = 0x40,
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MCP4461_TCON1 = 0xA0,
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MCP4461_EEPROM_1 = 0xB0
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};
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enum Mcp4461WiperIdx : uint8_t {
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MCP4461_WIPER_0 = 0,
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MCP4461_WIPER_1 = 1,
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MCP4461_WIPER_2 = 2,
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MCP4461_WIPER_3 = 3,
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MCP4461_WIPER_4 = 4,
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MCP4461_WIPER_5 = 5,
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MCP4461_WIPER_6 = 6,
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MCP4461_WIPER_7 = 7
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};
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enum class Mcp4461EepromLocation : uint8_t {
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MCP4461_EEPROM_0 = 0,
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MCP4461_EEPROM_1 = 1,
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MCP4461_EEPROM_2 = 2,
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MCP4461_EEPROM_3 = 3,
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MCP4461_EEPROM_4 = 4
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};
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enum class Mcp4461TerminalIdx : uint8_t { MCP4461_TERMINAL_0 = 0, MCP4461_TERMINAL_1 = 1 };
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class Mcp4461Wiper;
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// Mcp4461Component
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class Mcp4461Component : public Component, public i2c::I2CDevice {
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public:
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Mcp4461Component(bool disable_wiper_0, bool disable_wiper_1, bool disable_wiper_2, bool disable_wiper_3)
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: wiper_0_disabled_(disable_wiper_0),
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wiper_1_disabled_(disable_wiper_1),
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wiper_2_disabled_(disable_wiper_2),
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wiper_3_disabled_(disable_wiper_3) {
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this->reg_[0].enabled = !wiper_0_disabled_;
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this->reg_[1].enabled = !wiper_1_disabled_;
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this->reg_[2].enabled = !wiper_2_disabled_;
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this->reg_[3].enabled = !wiper_3_disabled_;
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}
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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 { return setup_priority::HARDWARE; }
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void loop() override;
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uint8_t get_status_register();
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uint16_t get_wiper_level(Mcp4461WiperIdx wiper);
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void set_wiper_level(Mcp4461WiperIdx wiper, uint16_t value);
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void update_wiper_level(Mcp4461WiperIdx wiper);
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void enable_wiper(Mcp4461WiperIdx wiper);
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void disable_wiper(Mcp4461WiperIdx wiper);
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bool increase_wiper(Mcp4461WiperIdx wiper);
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bool decrease_wiper(Mcp4461WiperIdx wiper);
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void enable_terminal(Mcp4461WiperIdx wiper, char terminal);
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void disable_terminal(Mcp4461WiperIdx, char terminal);
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void update_terminal_register(Mcp4461TerminalIdx terminal_connector);
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uint8_t get_terminal_register(Mcp4461TerminalIdx terminal_connector);
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bool set_terminal_register(Mcp4461TerminalIdx terminal_connector, uint8_t data);
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uint16_t get_eeprom_value(Mcp4461EepromLocation location);
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bool set_eeprom_value(Mcp4461EepromLocation location, uint16_t value);
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protected:
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friend class Mcp4461Wiper;
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void set_write_protection_status_();
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bool is_writing_();
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bool is_eeprom_busy_();
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uint8_t get_wiper_address_(uint8_t wiper);
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uint16_t read_wiper_level_(uint8_t wiper);
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void write_wiper_level_(uint8_t wiper, uint16_t value);
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bool mcp4461_write_(uint8_t addr, uint16_t data, bool nonvolatile = false);
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uint8_t calc_terminal_connector_byte_(Mcp4461TerminalIdx terminal_connector);
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WiperState reg_[8];
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void begin_();
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bool update_{false};
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uint32_t previous_write_exec_time_;
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bool write_protected_{false};
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bool wiper_0_disabled_{false};
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bool wiper_1_disabled_{false};
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bool wiper_2_disabled_{false};
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bool wiper_3_disabled_{false};
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};
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} // namespace mcp4461
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} // namespace esphome
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