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MCP230xx open drain interrupt pins (#1243)
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parent
81b512a7b3
commit
b52f7cfe86
8 changed files with 24 additions and 7 deletions
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@ -2,7 +2,7 @@ import esphome.codegen as cg
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import esphome.config_validation as cv
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from esphome import pins
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from esphome.components import i2c
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from esphome.const import CONF_ID, CONF_NUMBER, CONF_MODE, CONF_INVERTED
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from esphome.const import CONF_ID, CONF_NUMBER, CONF_MODE, CONF_INVERTED, CONF_OPEN_DRAIN_INTERRUPT
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DEPENDENCIES = ['i2c']
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MULTI_CONF = True
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@ -20,6 +20,7 @@ MCP23008GPIOPin = mcp23008_ns.class_('MCP23008GPIOPin', cg.GPIOPin)
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CONFIG_SCHEMA = cv.Schema({
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cv.Required(CONF_ID): cv.declare_id(MCP23008),
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cv.Optional(CONF_OPEN_DRAIN_INTERRUPT, default=False): cv.boolean,
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}).extend(cv.COMPONENT_SCHEMA).extend(i2c.i2c_device_schema(0x20))
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@ -27,6 +28,7 @@ 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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cg.add(var.set_open_drain_ints(config[CONF_OPEN_DRAIN_INTERRUPT]))
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CONF_MCP23008 = 'mcp23008'
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@ -14,8 +14,10 @@ void MCP23008::setup() {
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return;
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}
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// all pins input
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this->write_reg_(MCP23008_IODIR, 0xFF);
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if (this->open_drain_ints_) {
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// enable open-drain interrupt pins, 3.3V-safe
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this->write_reg_(MCP23008_IOCON, 0x04);
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}
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}
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bool MCP23008::digital_read(uint8_t pin) {
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uint8_t bit = pin % 8;
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@ -39,6 +39,8 @@ class MCP23008 : public Component, public i2c::I2CDevice {
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void digital_write(uint8_t pin, bool value);
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void pin_mode(uint8_t pin, uint8_t mode);
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void set_open_drain_ints(const bool value) { open_drain_ints_ = value; }
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float get_setup_priority() const override;
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protected:
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@ -50,6 +52,7 @@ class MCP23008 : public Component, public i2c::I2CDevice {
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void update_reg_(uint8_t pin, bool pin_value, uint8_t reg_a);
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uint8_t olat_{0x00};
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bool open_drain_ints_;
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};
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class MCP23008GPIOPin : public GPIOPin {
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@ -2,7 +2,7 @@ import esphome.codegen as cg
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import esphome.config_validation as cv
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from esphome import pins
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from esphome.components import i2c
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from esphome.const import CONF_ID, CONF_NUMBER, CONF_MODE, CONF_INVERTED
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from esphome.const import CONF_ID, CONF_NUMBER, CONF_MODE, CONF_INVERTED, CONF_OPEN_DRAIN_INTERRUPT
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DEPENDENCIES = ['i2c']
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MULTI_CONF = True
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@ -20,6 +20,7 @@ MCP23017GPIOPin = mcp23017_ns.class_('MCP23017GPIOPin', cg.GPIOPin)
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CONFIG_SCHEMA = cv.Schema({
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cv.Required(CONF_ID): cv.declare_id(MCP23017),
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cv.Optional(CONF_OPEN_DRAIN_INTERRUPT, default=False): cv.boolean,
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}).extend(cv.COMPONENT_SCHEMA).extend(i2c.i2c_device_schema(0x20))
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@ -27,6 +28,7 @@ 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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cg.add(var.set_open_drain_ints(config[CONF_OPEN_DRAIN_INTERRUPT]))
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CONF_MCP23017 = 'mcp23017'
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@ -14,9 +14,11 @@ void MCP23017::setup() {
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return;
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}
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// all pins input
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this->write_reg_(MCP23017_IODIRA, 0xFF);
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this->write_reg_(MCP23017_IODIRB, 0xFF);
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if (this->open_drain_ints_) {
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// enable open-drain interrupt pins, 3.3V-safe
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this->write_reg_(MCP23017_IOCONA, 0x04);
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this->write_reg_(MCP23017_IOCONB, 0x04);
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}
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}
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bool MCP23017::digital_read(uint8_t pin) {
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uint8_t bit = pin % 8;
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@ -51,6 +51,8 @@ class MCP23017 : public Component, public i2c::I2CDevice {
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void digital_write(uint8_t pin, bool value);
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void pin_mode(uint8_t pin, uint8_t mode);
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void set_open_drain_ints(const bool value) { open_drain_ints_ = value; }
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float get_setup_priority() const override;
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protected:
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@ -63,6 +65,7 @@ class MCP23017 : public Component, public i2c::I2CDevice {
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uint8_t olat_a_{0x00};
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uint8_t olat_b_{0x00};
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bool open_drain_ints_;
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};
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class MCP23017GPIOPin : public GPIOPin {
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@ -357,6 +357,7 @@ CONF_ON_VALUE = 'on_value'
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CONF_ON_VALUE_RANGE = 'on_value_range'
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CONF_ONE = 'one'
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CONF_OPEN_ACTION = 'open_action'
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CONF_OPEN_DRAIN_INTERRUPT = 'open_drain_interrupt'
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CONF_OPEN_DURATION = 'open_duration'
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CONF_OPEN_ENDSTOP = 'open_endstop'
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CONF_OPTIMISTIC = 'optimistic'
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@ -1921,10 +1921,12 @@ pcf8574:
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mcp23017:
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- id: 'mcp23017_hub'
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open_drain_interrupt: 'true'
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mcp23008:
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- id: 'mcp23008_hub'
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address: 0x22
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open_drain_interrupt: 'true'
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mcp23016:
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- id: 'mcp23016_hub'
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