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Add support for PCA9535 16 bit I/O expander (#5634)
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parent
8eae882d93
commit
1fd9d67e2b
5 changed files with 70 additions and 17 deletions
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@ -217,7 +217,7 @@ esphome/components/number/* @esphome/core
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esphome/components/ota/* @esphome/core
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esphome/components/output/* @esphome/core
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esphome/components/pca6416a/* @Mat931
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esphome/components/pca9554/* @hwstar
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esphome/components/pca9554/* @clydebarrow @hwstar
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esphome/components/pcf85063/* @brogon
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esphome/components/pcf8563/* @KoenBreeman
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esphome/components/pid/* @OttoWinter
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@ -10,10 +10,12 @@ from esphome.const import (
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CONF_INVERTED,
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CONF_OUTPUT,
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)
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from esphome.core import CORE, ID
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CODEOWNERS = ["@hwstar"]
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CODEOWNERS = ["@hwstar", "@clydebarrow"]
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DEPENDENCIES = ["i2c"]
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MULTI_CONF = True
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CONF_PIN_COUNT = "pin_count"
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pca9554_ns = cg.esphome_ns.namespace("pca9554")
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PCA9554Component = pca9554_ns.class_("PCA9554Component", cg.Component, i2c.I2CDevice)
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@ -23,7 +25,12 @@ PCA9554GPIOPin = pca9554_ns.class_(
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CONF_PCA9554 = "pca9554"
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CONFIG_SCHEMA = (
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cv.Schema({cv.Required(CONF_ID): cv.declare_id(PCA9554Component)})
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cv.Schema(
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{
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cv.Required(CONF_ID): cv.declare_id(PCA9554Component),
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cv.Optional(CONF_PIN_COUNT, default=8): cv.one_of(4, 8, 16),
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}
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)
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.extend(cv.COMPONENT_SCHEMA)
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.extend(
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i2c.i2c_device_schema(0x20)
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@ -33,6 +40,7 @@ CONFIG_SCHEMA = (
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async def to_code(config):
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var = cg.new_Pvariable(config[CONF_ID])
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cg.add(var.set_pin_count(config[CONF_PIN_COUNT]))
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await cg.register_component(var, config)
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await i2c.register_i2c_device(var, config)
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@ -45,11 +53,32 @@ def validate_mode(value):
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return value
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def validate_pin(config):
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pca_id = config[CONF_PCA9554].id
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# when pin config validation is performed, the entire YAML has been read, but depending on the component order,
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# the pca9554 component may not yet have been processed, so its id property could be either the original string,
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# or an ID object.
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def matcher(p):
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id = p[CONF_ID]
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if isinstance(id, ID):
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return id.id == pca_id
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return id == pca_id
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pca = list(filter(matcher, CORE.raw_config[CONF_PCA9554]))
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if not pca:
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raise cv.Invalid(f"No pca9554 component found with id matching {pca_id}")
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count = pca[0][CONF_PIN_COUNT]
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if config[CONF_NUMBER] >= count:
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raise cv.Invalid(f"Pin number must be in range 0-{count - 1}")
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return config
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PCA9554_PIN_SCHEMA = cv.All(
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{
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cv.GenerateID(): cv.declare_id(PCA9554GPIOPin),
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cv.Required(CONF_PCA9554): cv.use_id(PCA9554Component),
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cv.Required(CONF_NUMBER): cv.int_range(min=0, max=8),
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cv.Required(CONF_NUMBER): cv.int_range(min=0, max=15),
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cv.Optional(CONF_MODE, default={}): cv.All(
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{
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cv.Optional(CONF_INPUT, default=False): cv.boolean,
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@ -58,7 +87,8 @@ PCA9554_PIN_SCHEMA = cv.All(
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validate_mode,
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),
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cv.Optional(CONF_INVERTED, default=False): cv.boolean,
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}
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},
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validate_pin,
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)
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@ -4,6 +4,7 @@
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namespace esphome {
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namespace pca9554 {
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// for 16 bit expanders, these addresses will be doubled.
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const uint8_t INPUT_REG = 0;
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const uint8_t OUTPUT_REG = 1;
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const uint8_t INVERT_REG = 2;
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@ -13,9 +14,10 @@ static const char *const TAG = "pca9554";
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void PCA9554Component::setup() {
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ESP_LOGCONFIG(TAG, "Setting up PCA9554/PCA9554A...");
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this->reg_width_ = (this->pin_count_ + 7) / 8;
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// Test to see if device exists
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if (!this->read_inputs_()) {
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ESP_LOGE(TAG, "PCA9554 not available under 0x%02X", this->address_);
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ESP_LOGE(TAG, "PCA95xx not detected at 0x%02X", this->address_);
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this->mark_failed();
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return;
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}
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@ -44,6 +46,7 @@ void PCA9554Component::loop() {
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void PCA9554Component::dump_config() {
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ESP_LOGCONFIG(TAG, "PCA9554:");
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ESP_LOGCONFIG(TAG, " I/O Pins: %d", this->pin_count_);
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LOG_I2C_DEVICE(this)
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if (this->is_failed()) {
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ESP_LOGE(TAG, "Communication with PCA9554 failed!");
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@ -85,25 +88,33 @@ void PCA9554Component::pin_mode(uint8_t pin, gpio::Flags flags) {
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}
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bool PCA9554Component::read_inputs_() {
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uint8_t inputs;
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uint8_t inputs[2];
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if (this->is_failed()) {
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ESP_LOGD(TAG, "Device marked failed");
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return false;
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}
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if ((this->last_error_ = this->read_register(INPUT_REG, &inputs, 1, true)) != esphome::i2c::ERROR_OK) {
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if ((this->last_error_ = this->read_register(INPUT_REG * this->reg_width_, inputs, this->reg_width_, true)) !=
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esphome::i2c::ERROR_OK) {
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this->status_set_warning();
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ESP_LOGE(TAG, "read_register_(): I2C I/O error: %d", (int) this->last_error_);
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return false;
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}
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this->status_clear_warning();
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this->input_mask_ = inputs;
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this->input_mask_ = inputs[0];
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if (this->reg_width_ == 2) {
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this->input_mask_ |= inputs[1] << 8;
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}
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return true;
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}
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bool PCA9554Component::write_register_(uint8_t reg, uint8_t value) {
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if ((this->last_error_ = this->write_register(reg, &value, 1, true)) != esphome::i2c::ERROR_OK) {
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bool PCA9554Component::write_register_(uint8_t reg, uint16_t value) {
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uint8_t outputs[2];
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outputs[0] = (uint8_t) value;
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outputs[1] = (uint8_t) (value >> 8);
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if ((this->last_error_ = this->write_register(reg * this->reg_width_, outputs, this->reg_width_, true)) !=
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esphome::i2c::ERROR_OK) {
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this->status_set_warning();
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ESP_LOGE(TAG, "write_register_(): I2C I/O error: %d", (int) this->last_error_);
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return false;
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@ -28,19 +28,25 @@ class PCA9554Component : public Component, public i2c::I2CDevice {
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void dump_config() override;
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void set_pin_count(size_t pin_count) { this->pin_count_ = pin_count; }
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protected:
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bool read_inputs_();
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bool write_register_(uint8_t reg, uint8_t value);
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bool write_register_(uint8_t reg, uint16_t value);
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/// number of bits the expander has
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size_t pin_count_{8};
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/// width of registers
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size_t reg_width_{1};
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/// Mask for the pin config - 1 means OUTPUT, 0 means INPUT
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uint8_t config_mask_{0x00};
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uint16_t config_mask_{0x00};
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/// The mask to write as output state - 1 means HIGH, 0 means LOW
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uint8_t output_mask_{0x00};
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uint16_t output_mask_{0x00};
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/// The state of the actual input pin states - 1 means HIGH, 0 means LOW
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uint8_t input_mask_{0x00};
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uint16_t input_mask_{0x00};
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/// Flags to check if read previously during this loop
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uint8_t was_previously_read_ = {0x00};
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uint16_t was_previously_read_ = {0x00};
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/// Storage for last I2C error seen
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esphome::i2c::ErrorCode last_error_;
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};
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@ -3182,6 +3182,7 @@ pcf8574:
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pca9554:
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- id: pca9554_hub
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pin_count: 8
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address: 0x3F
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i2c_id: i2c_bus
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@ -3331,7 +3332,12 @@ rtttl:
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canbus:
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- platform: mcp2515
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id: mcp2515_can
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cs_pin: GPIO17
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cs_pin:
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pca9554: pca9554_hub
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number: 7
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mode:
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output: true
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inverted: true
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can_id: 4
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bit_rate: 50kbps
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on_frame:
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