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MCP23SXX I/O Expander - SPI (#1068) 

Co-authored-by: Jesse Hills <3060199+jesserockz@users.noreply.github.com>
This commit is contained in:
SenexCrenshaw 2020-12-06 12:43:55 -05:00 committed by GitHub
parent c12c9e97c2
commit 7cd4c3bdd3
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GPG Key ID: 4AEE18F83AFDEB23
9 changed files with 571 additions and 0 deletions
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2
CODEOWNERS
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@ -40,6 +40,8 @@ esphome/components/json/* @OttoWinter
esphome/components/ledc/* @OttoWinter
esphome/components/light/* @esphome/core
esphome/components/logger/* @esphome/core
esphome/components/mcp23s08/* @SenexCrenshaw
esphome/components/mcp23s17/* @SenexCrenshaw
esphome/components/mcp9808/* @k7hpn
esphome/components/network/* @esphome/core
esphome/components/ota/* @esphome/core

58
esphome/components/mcp23s08/__init__.py Normal file
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import esphome.codegen as cg
import esphome.config_validation as cv
from esphome import pins
from esphome.components import spi
from esphome.const import CONF_ID, CONF_NUMBER, CONF_MODE, CONF_INVERTED
CODEOWNERS = ['@SenexCrenshaw']
DEPENDENCIES = ['spi']
MULTI_CONF = True
CONF_DEVICEADDRESS = "deviceaddress"
mcp23S08_ns = cg.esphome_ns.namespace('mcp23s08')
mcp23S08GPIOMode = mcp23S08_ns.enum('MCP23S08GPIOMode')
mcp23S08_GPIO_MODES = {
'INPUT': mcp23S08GPIOMode.MCP23S08_INPUT,
'INPUT_PULLUP': mcp23S08GPIOMode.MCP23S08_INPUT_PULLUP,
'OUTPUT': mcp23S08GPIOMode.MCP23S08_OUTPUT,
}
mcp23S08 = mcp23S08_ns.class_('MCP23S08', cg.Component, spi.SPIDevice)
mcp23S08GPIOPin = mcp23S08_ns.class_('MCP23S08GPIOPin', cg.GPIOPin)
CONFIG_SCHEMA = cv.Schema({
cv.Required(CONF_ID): cv.declare_id(mcp23S08),
cv.Optional(CONF_DEVICEADDRESS, default=0): cv.uint8_t,
}).extend(cv.COMPONENT_SCHEMA).extend(spi.spi_device_schema())
def to_code(config):
var = cg.new_Pvariable(config[CONF_ID])
cg.add(var.set_device_address(config[CONF_DEVICEADDRESS]))
yield cg.register_component(var, config)
yield spi.register_spi_device(var, config)
CONF_MCP23S08 = 'mcp23s08'
mcp23S08_OUTPUT_PIN_SCHEMA = cv.Schema({
cv.GenerateID(CONF_MCP23S08): cv.use_id(mcp23S08),
cv.Required(CONF_NUMBER): cv.int_,
cv.Optional(CONF_MODE, default="OUTPUT"): cv.enum(mcp23S08_GPIO_MODES, upper=True),
cv.Optional(CONF_INVERTED, default=False): cv.boolean,
})
mcp23S08_INPUT_PIN_SCHEMA = cv.Schema({
cv.GenerateID(CONF_MCP23S08): cv.use_id(mcp23S08),
cv.Required(CONF_NUMBER): cv.int_range(0, 7),
cv.Optional(CONF_MODE, default="INPUT"): cv.enum(mcp23S08_GPIO_MODES, upper=True),
cv.Optional(CONF_INVERTED, default=False): cv.boolean,
})
@pins.PIN_SCHEMA_REGISTRY.register(CONF_MCP23S08,
(mcp23S08_OUTPUT_PIN_SCHEMA, mcp23S08_INPUT_PIN_SCHEMA))
def mcp23S08_pin_to_code(config):
parent = yield cg.get_variable(config[CONF_MCP23S08])
yield mcp23S08GPIOPin.new(parent, config[CONF_NUMBER], config[CONF_MODE], config[CONF_INVERTED])

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esphome/components/mcp23s08/mcp23s08.cpp Normal file
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#include "mcp23s08.h"
#include "esphome/core/log.h"
namespace esphome {
namespace mcp23s08 {
static const char *TAG = "mcp23s08";
void MCP23S08::set_device_address(uint8_t device_addr) {
if (device_addr != 0) {
this->device_opcode_ |= ((device_addr & 0x03) << 1);
}
}
void MCP23S08::setup() {
ESP_LOGCONFIG(TAG, "Setting up MCP23S08...");
this->spi_setup();
this->enable();
this->transfer_byte(MCP23S08_IODIR);
this->transfer_byte(0xFF);
for (uint8_t i = 0; i < MCP23S08_OLAT; i++) {
this->transfer_byte(0x00);
}
this->disable();
}
void MCP23S08::dump_config() {
ESP_LOGCONFIG(TAG, "MCP23S08:");
LOG_PIN(" CS Pin: ", this->cs_);
}
float MCP23S08::get_setup_priority() const { return setup_priority::HARDWARE; }
bool MCP23S08::digital_read(uint8_t pin) {
if (pin > 7) {
return false;
}
uint8_t bit = pin % 8;
uint8_t reg_addr = MCP23S08_GPIO;
uint8_t value = 0;
this->read_reg(reg_addr, &value);
return value & (1 << bit);
}
void MCP23S08::digital_write(uint8_t pin, bool value) {
if (pin > 7) {
return;
}
uint8_t reg_addr = MCP23S08_OLAT;
this->update_reg(pin, value, reg_addr);
}
void MCP23S08::pin_mode(uint8_t pin, uint8_t mode) {
uint8_t iodir = MCP23S08_IODIR;
uint8_t gppu = MCP23S08_GPPU;
switch (mode) {
case MCP23S08_INPUT:
this->update_reg(pin, true, iodir);
break;
case MCP23S08_INPUT_PULLUP:
this->update_reg(pin, true, iodir);
this->update_reg(pin, true, gppu);
break;
case MCP23S08_OUTPUT:
this->update_reg(pin, false, iodir);
break;
default:
break;
}
}
void MCP23S08::update_reg(uint8_t pin, bool pin_value, uint8_t reg_addr) {
uint8_t bit = pin % 8;
uint8_t reg_value = 0;
if (reg_addr == MCP23S08_OLAT) {
reg_value = this->olat_;
} else {
this->read_reg(reg_addr, &reg_value);
}
if (pin_value)
reg_value |= 1 << bit;
else
reg_value &= ~(1 << bit);
this->write_reg(reg_addr, reg_value);
if (reg_addr == MCP23S08_OLAT) {
this->olat_ = reg_value;
}
}
bool MCP23S08::write_reg(uint8_t reg, uint8_t value) {
this->enable();
this->transfer_byte(this->device_opcode_);
this->transfer_byte(reg);
this->transfer_byte(value);
this->disable();
return true;
}
bool MCP23S08::read_reg(uint8_t reg, uint8_t *value) {
uint8_t data;
this->enable();
this->transfer_byte(this->device_opcode_ | 1);
this->transfer_byte(reg);
*value = this->transfer_byte(0);
this->disable();
return true;
}
MCP23S08GPIOPin::MCP23S08GPIOPin(MCP23S08 *parent, uint8_t pin, uint8_t mode, bool inverted)
: GPIOPin(pin, mode, inverted), parent_(parent) {}
void MCP23S08GPIOPin::setup() { this->pin_mode(this->mode_); }
void MCP23S08GPIOPin::pin_mode(uint8_t mode) { this->parent_->pin_mode(this->pin_, mode); }
bool MCP23S08GPIOPin::digital_read() { return this->parent_->digital_read(this->pin_) != this->inverted_; }
void MCP23S08GPIOPin::digital_write(bool value) { this->parent_->digital_write(this->pin_, value != this->inverted_); }
} // namespace mcp23s08
} // namespace esphome

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esphome/components/mcp23s08/mcp23s08.h Normal file
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#pragma once
#include "esphome/core/component.h"
#include "esphome/core/esphal.h"
#include "esphome/components/spi/spi.h"
namespace esphome {
namespace mcp23s08 {
/// Modes for MCP23S08 pins
enum MCP23S08GPIOMode : uint8_t {
MCP23S08_INPUT = INPUT, // 0x00
MCP23S08_INPUT_PULLUP = INPUT_PULLUP, // 0x02
MCP23S08_OUTPUT = OUTPUT // 0x01
};
enum MCP23S08GPIORegisters {
// A side
MCP23S08_IODIR = 0x00,
MCP23S08_IPOL = 0x01,
MCP23S08_GPINTEN = 0x02,
MCP23S08_DEFVAL = 0x03,
MCP23S08_INTCON = 0x04,
MCP23S08_IOCON = 0x05,
MCP23S08_GPPU = 0x06,
MCP23S08_INTF = 0x07,
MCP23S08_INTCAP = 0x08,
MCP23S08_GPIO = 0x09,
MCP23S08_OLAT = 0x0A,
};
class MCP23S08 : public Component,
public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_LOW, spi::CLOCK_PHASE_LEADING,
spi::DATA_RATE_10MHZ> {
public:
MCP23S08() = default;
void setup() override;
void dump_config() 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_device_address(uint8_t device_addr);
float get_setup_priority() const override;
// 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);
protected:
uint8_t device_opcode_ = 0x40;
uint8_t olat_{0x00};
};
class MCP23S08GPIOPin : public GPIOPin {
public:
MCP23S08GPIOPin(MCP23S08 *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:
MCP23S08 *parent_;
};
} // namespace mcp23s08
} // namespace esphome

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esphome/components/mcp23s17/__init__.py Normal file
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import esphome.codegen as cg
import esphome.config_validation as cv
from esphome import pins
from esphome.components import spi
from esphome.const import CONF_ID, CONF_NUMBER, CONF_MODE, CONF_INVERTED
CODEOWNERS = ['@SenexCrenshaw']
DEPENDENCIES = ['spi']
MULTI_CONF = True
CONF_DEVICEADDRESS = "deviceaddress"
mcp23S17_ns = cg.esphome_ns.namespace('mcp23s17')
mcp23S17GPIOMode = mcp23S17_ns.enum('MCP23S17GPIOMode')
mcp23S17_GPIO_MODES = {
'INPUT': mcp23S17GPIOMode.MCP23S17_INPUT,
'INPUT_PULLUP': mcp23S17GPIOMode.MCP23S17_INPUT_PULLUP,
'OUTPUT': mcp23S17GPIOMode.MCP23S17_OUTPUT,
}
mcp23S17 = mcp23S17_ns.class_('MCP23S17', cg.Component, spi.SPIDevice)
mcp23S17GPIOPin = mcp23S17_ns.class_('MCP23S17GPIOPin', cg.GPIOPin)
CONFIG_SCHEMA = cv.Schema({
cv.Required(CONF_ID): cv.declare_id(mcp23S17),
cv.Optional(CONF_DEVICEADDRESS, default=0): cv.uint8_t,
}).extend(cv.COMPONENT_SCHEMA).extend(spi.spi_device_schema())
def to_code(config):
var = cg.new_Pvariable(config[CONF_ID])
cg.add(var.set_device_address(config[CONF_DEVICEADDRESS]))
yield cg.register_component(var, config)
yield spi.register_spi_device(var, config)
CONF_MCP23S17 = 'mcp23s17'
mcp23S17_OUTPUT_PIN_SCHEMA = cv.Schema({
cv.GenerateID(CONF_MCP23S17): cv.use_id(mcp23S17),
cv.Required(CONF_NUMBER): cv.int_,
cv.Optional(CONF_MODE, default="OUTPUT"): cv.enum(mcp23S17_GPIO_MODES, upper=True),
cv.Optional(CONF_INVERTED, default=False): cv.boolean,
})
mcp23S17_INPUT_PIN_SCHEMA = cv.Schema({
cv.Required(CONF_MCP23S17): cv.use_id(mcp23S17),
cv.Required(CONF_NUMBER): cv.int_range(0, 15),
cv.Optional(CONF_MODE, default="INPUT"): cv.enum(mcp23S17_GPIO_MODES, upper=True),
cv.Optional(CONF_INVERTED, default=False): cv.boolean,
})
@pins.PIN_SCHEMA_REGISTRY.register(CONF_MCP23S17,
(mcp23S17_OUTPUT_PIN_SCHEMA, mcp23S17_INPUT_PIN_SCHEMA))
def mcp23S17_pin_to_code(config):
parent = yield cg.get_variable(config[CONF_MCP23S17])
yield mcp23S17GPIOPin.new(parent, config[CONF_NUMBER], config[CONF_MODE], config[CONF_INVERTED])

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esphome/components/mcp23s17/mcp23s17.cpp Normal file
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#include "mcp23s17.h"
#include "esphome/core/log.h"
namespace esphome {
namespace mcp23s17 {
static const char *TAG = "mcp23s17";
void MCP23S17::set_device_address(uint8_t device_addr) {
if (device_addr != 0) {
this->device_opcode_ |= ((device_addr & 0b111) << 1);
}
}
void MCP23S17::setup() {
ESP_LOGCONFIG(TAG, "Setting up MCP23S17...");
this->spi_setup();
this->enable();
uint8_t cmd = 0b01000000;
this->transfer_byte(cmd);
this->transfer_byte(0x18);
this->transfer_byte(0x0A);
this->transfer_byte(this->device_opcode_);
this->transfer_byte(0);
this->transfer_byte(0xFF);
this->transfer_byte(0xFF);
for (uint8_t i = 0; i < 20; i++) {
this->transfer_byte(0);
}
this->disable();
}
void MCP23S17::dump_config() {
ESP_LOGCONFIG(TAG, "MCP23S17:");
LOG_PIN(" CS Pin: ", this->cs_);
}
float MCP23S17::get_setup_priority() const { return setup_priority::HARDWARE; }
bool MCP23S17::digital_read(uint8_t pin) {
uint8_t bit = pin % 8;
uint8_t reg_addr = pin < 8 ? MCP23S17_GPIOA : MCP23S17_GPIOB;
uint8_t value = 0;
this->read_reg(reg_addr, &value);
return value & (1 << bit);
}
void MCP23S17::digital_write(uint8_t pin, bool value) {
uint8_t reg_addr = pin < 8 ? MCP23S17_OLATA : MCP23S17_OLATB;
this->update_reg(pin, value, reg_addr);
}
void MCP23S17::pin_mode(uint8_t pin, uint8_t mode) {
uint8_t iodir = pin < 8 ? MCP23S17_IODIRA : MCP23S17_IODIRB;
uint8_t gppu = pin < 8 ? MCP23S17_GPPUA : MCP23S17_GPPUB;
switch (mode) {
case MCP23S17_INPUT:
this->update_reg(pin, true, iodir);
break;
case MCP23S17_INPUT_PULLUP:
this->update_reg(pin, true, iodir);
this->update_reg(pin, true, gppu);
break;
case MCP23S17_OUTPUT:
this->update_reg(pin, false, iodir);
break;
default:
break;
}
}
void MCP23S17::update_reg(uint8_t pin, bool pin_value, uint8_t reg_addr) {
uint8_t bit = pin % 8;
uint8_t reg_value = 0;
if (reg_addr == MCP23S17_OLATA) {
reg_value = this->olat_a_;
} else if (reg_addr == MCP23S17_OLATB) {
reg_value = this->olat_b_;
} else {
this->read_reg(reg_addr, &reg_value);
}
if (pin_value)
reg_value |= 1 << bit;
else
reg_value &= ~(1 << bit);
this->write_reg(reg_addr, reg_value);
if (reg_addr == MCP23S17_OLATA) {
this->olat_a_ = reg_value;
} else if (reg_addr == MCP23S17_OLATB) {
this->olat_b_ = reg_value;
}
}
bool MCP23S17::read_reg(uint8_t reg, uint8_t *value) {
this->enable();
this->transfer_byte(this->device_opcode_ | 1);
this->transfer_byte(reg);
*value = this->transfer_byte(0xFF);
this->disable();
return true;
}
bool MCP23S17::write_reg(uint8_t reg, uint8_t value) {
this->enable();
this->transfer_byte(this->device_opcode_);
this->transfer_byte(reg);
this->transfer_byte(value);
this->disable();
return true;
}
MCP23S17GPIOPin::MCP23S17GPIOPin(MCP23S17 *parent, uint8_t pin, uint8_t mode, bool inverted)
: GPIOPin(pin, mode, inverted), parent_(parent) {}
void MCP23S17GPIOPin::setup() { this->pin_mode(this->mode_); }
void MCP23S17GPIOPin::pin_mode(uint8_t mode) { this->parent_->pin_mode(this->pin_, mode); }
bool MCP23S17GPIOPin::digital_read() { return this->parent_->digital_read(this->pin_) != this->inverted_; }
void MCP23S17GPIOPin::digital_write(bool value) { this->parent_->digital_write(this->pin_, value != this->inverted_); }
} // namespace mcp23s17
} // namespace esphome

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esphome/components/mcp23s17/mcp23s17.h Normal file
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#pragma once
#include "esphome/core/component.h"
#include "esphome/core/esphal.h"
#include "esphome/components/spi/spi.h"
namespace esphome {
namespace mcp23s17 {
/// Modes for MCP23S17 pins
enum MCP23S17GPIOMode : uint8_t {
MCP23S17_INPUT = INPUT, // 0x00
MCP23S17_INPUT_PULLUP = INPUT_PULLUP, // 0x02
MCP23S17_OUTPUT = OUTPUT // 0x01
};
enum MCP23S17GPIORegisters {
// A side
MCP23S17_IODIRA = 0x00,
MCP23S17_IPOLA = 0x02,
MCP23S17_GPINTENA = 0x04,
MCP23S17_DEFVALA = 0x06,
MCP23S17_INTCONA = 0x08,
MCP23S17_IOCONA = 0x0A,
MCP23S17_GPPUA = 0x0C,
MCP23S17_INTFA = 0x0E,
MCP23S17_INTCAPA = 0x10,
MCP23S17_GPIOA = 0x12,
MCP23S17_OLATA = 0x14,
// B side
MCP23S17_IODIRB = 0x01,
MCP23S17_IPOLB = 0x03,
MCP23S17_GPINTENB = 0x05,
MCP23S17_DEFVALB = 0x07,
MCP23S17_INTCONB = 0x09,
MCP23S17_IOCONB = 0x0B,
MCP23S17_GPPUB = 0x0D,
MCP23S17_INTFB = 0x0F,
MCP23S17_INTCAPB = 0x11,
MCP23S17_GPIOB = 0x13,
MCP23S17_OLATB = 0x15,
};
class MCP23S17 : public Component,
public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_LOW, spi::CLOCK_PHASE_LEADING,
spi::DATA_RATE_8MHZ> {
public:
MCP23S17() = default;
void setup() override;
void dump_config() override;
void set_device_address(uint8_t device_addr);
bool digital_read(uint8_t pin);
void digital_write(uint8_t pin, bool value);
void pin_mode(uint8_t pin, uint8_t mode);
float get_setup_priority() const override;
// 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);
protected:
uint8_t device_opcode_ = 0x40;
uint8_t olat_a_{0x00};
uint8_t olat_b_{0x00};
};
class MCP23S17GPIOPin : public GPIOPin {
public:
MCP23S17GPIOPin(MCP23S17 *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:
MCP23S17 *parent_;
};
} // namespace mcp23s17
} // namespace esphome

1
esphome/components/spi/spi.h
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@ -55,6 +55,7 @@ enum SPIDataRate : uint32_t {
DATA_RATE_2MHZ = 2000000,
DATA_RATE_4MHZ = 4000000,
DATA_RATE_8MHZ = 8000000,
DATA_RATE_10MHZ = 10000000,
DATA_RATE_20MHZ = 20000000,
DATA_RATE_40MHZ = 40000000,
};

44
tests/test1.yaml
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@ -197,6 +197,16 @@ wled:
adalight:
mcp23s08:
- id: 'mcp23s08_hub'
cs_pin: GPIO12
deviceaddress: 0
mcp23s17:
- id: 'mcp23s17_hub'
cs_pin: GPIO12
deviceaddress: 1
sensor:
- platform: adc
pin: A0
@ -802,6 +812,24 @@ esp32_touch:
voltage_attenuation: 1.5V
binary_sensor:
- platform: gpio
name: "MCP23S08 Pin #1"
pin:
mcp23s08: mcp23s08_hub
# Use pin number 1
number: 1
# One of INPUT or INPUT_PULLUP
mode: INPUT_PULLUP
inverted: False
- platform: gpio
name: "MCP23S17 Pin #1"
pin:
mcp23s17: mcp23s17_hub
# Use pin number 1
number: 1
# One of INPUT or INPUT_PULLUP
mode: INPUT_PULLUP
inverted: False
- platform: gpio
pin: GPIO9
name: 'Living Room Window'
@ -1362,6 +1390,22 @@ climate:
name: Hitachi Climate
switch:
- platform: gpio
name: "MCP23S08 Pin #0"
pin:
mcp23s08: mcp23s08_hub
# Use pin number 0
number: 0
mode: OUTPUT
inverted: False
- platform: gpio
name: "MCP23S17 Pin #0"
pin:
mcp23s17: mcp23s17_hub
# Use pin number 0
number: 1
mode: OUTPUT
inverted: False
- platform: gpio
pin: GPIO25
name: 'Living Room Dehumidifier'