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MCP23XXX Refactor (#1560)

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* Refactor MCP23XXX classes to consolidate shared code

* Update test mcp23xxx pin schemas
This commit is contained in:
Jesse Hills
2021-03-08 08:23:54 +13:00
committed by GitHub
parent 69879920eb
commit 570ec36fe3
25 changed files with 603 additions and 740 deletions
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esphome/components/mcp23017/mcp23017.h
+5 -66
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@@ -1,84 +1,23 @@
#pragma once
#include "esphome/core/component.h"
#include "esphome/components/mcp23x17_base/mcp23x17_base.h"
#include "esphome/core/esphal.h"
#include "esphome/components/i2c/i2c.h"
namespace esphome {
namespace mcp23017 {
/// Modes for MCP23017 pins
enum MCP23017GPIOMode : uint8_t {
MCP23017_INPUT = INPUT, // 0x00
MCP23017_INPUT_PULLUP = INPUT_PULLUP, // 0x02
MCP23017_OUTPUT = OUTPUT // 0x01
};
enum MCP23017GPIORegisters {
// A side
MCP23017_IODIRA = 0x00,
MCP23017_IPOLA = 0x02,
MCP23017_GPINTENA = 0x04,
MCP23017_DEFVALA = 0x06,
MCP23017_INTCONA = 0x08,
MCP23017_IOCONA = 0x0A,
MCP23017_GPPUA = 0x0C,
MCP23017_INTFA = 0x0E,
MCP23017_INTCAPA = 0x10,
MCP23017_GPIOA = 0x12,
MCP23017_OLATA = 0x14,
// B side
MCP23017_IODIRB = 0x01,
MCP23017_IPOLB = 0x03,
MCP23017_GPINTENB = 0x05,
MCP23017_DEFVALB = 0x07,
MCP23017_INTCONB = 0x09,
MCP23017_IOCONB = 0x0B,
MCP23017_GPPUB = 0x0D,
MCP23017_INTFB = 0x0F,
MCP23017_INTCAPB = 0x11,
MCP23017_GPIOB = 0x13,
MCP23017_OLATB = 0x15,
};
class MCP23017 : public Component, public i2c::I2CDevice {
class MCP23017 : public mcp23x17_base::MCP23X17Base, public i2c::I2CDevice {
public:
MCP23017() = default;
void setup() override;
bool digital_read(uint8_t pin);
void digital_write(uint8_t pin, bool value);
void pin_mode(uint8_t pin, uint8_t mode);
void set_open_drain_ints(const bool value) { open_drain_ints_ = value; }
float get_setup_priority() const override;
void dump_config() override;
protected:
// read a given register
bool read_reg_(uint8_t reg, uint8_t *value);
// write a value to a given register
bool write_reg_(uint8_t reg, uint8_t value);
// update registers with given pin value.
void update_reg_(uint8_t pin, bool pin_value, uint8_t reg_a);
uint8_t olat_a_{0x00};
uint8_t olat_b_{0x00};
bool open_drain_ints_;
};
class MCP23017GPIOPin : public GPIOPin {
public:
MCP23017GPIOPin(MCP23017 *parent, uint8_t pin, uint8_t mode, bool inverted = false);
void setup() override;
void pin_mode(uint8_t mode) override;
bool digital_read() override;
void digital_write(bool value) override;
protected:
MCP23017 *parent_;
bool read_reg(uint8_t reg, uint8_t *value) override;
bool write_reg(uint8_t reg, uint8_t value) override;
};
} // namespace mcp23017