TCA6408 in lowercase

2026-06-13 10:09:33 +01:00
parent 99352c4d47
commit 18779cd550
4 changed files with 451 additions and 0 deletions
@@ -0,0 +1,97 @@
+import esphome.codegen as cg
+import esphome.config_validation as cv
+from esphome.components import i2c, gpio
+from esphome.const import CONF_ID, CONF_ADDRESS, CONF_INTERRUPT_PIN
+
+# This component depends on the I2C bus
+DEPENDENCIES = ["i2c"]
+
+# Namespace for the C++ component
+tca6408_ns = cg.esphome_ns.namespace("tca6408")
+
+# Reference to the main C++ class
+TCA6408Component = tca6408_ns.class_("TCA6408Component", cg.Component, i2c.I2CDevice)
+
+# Configuration schema for the component
+CONFIG_SCHEMA = (
+    cv.Schema(
+        {
+            # Unique ID for this component instance
+            cv.GenerateID(): cv.declare_id(TCA6408Component),
+            
+            # I²C address of the TCA6408 (default 0x20 when ADDR pins are grounded)
+            cv.Optional(CONF_ADDRESS, default=0x20): cv.i2c_address,
+            
+            # Optional ESP GPIO connected to the TCA6408 INT pin (recommended)
+            # cv.Optional(CONF_INTERRUPT_PIN): gpio.validate_gpio_pin("internal"),
+        }
+    )
+    .extend(cv.COMPONENT_SCHEMA)
+    .extend(i2c.i2c_device_schema())
+)
+
+async def to_code(config):
+    """Generate C++ code from the YAML configuration."""
+    
+    var = cg.new_Pvariable(config[CONF_ID])
+    
+    await cg.register_component(var, config)
+    await i2c.register_i2c_device(var, config)
+
+    cg.add(var.set_address(config[CONF_ADDRESS]))
+
+    if CONF_INTERRUPT_PIN in config:
+        pin = await gpio.register_gpio_pin(var, config[CONF_INTERRUPT_PIN])
+        cg.add(var.set_interrupt_pin(pin))
+
+
+# ================================================
+# YAML USAGE EXAMPLES
+# ================================================
+
+"""
+# Example 1: Basic Outputs Only
+tca6408:
+  - id: tca6408_hub
+    address: 0x20
+
+switch:
+  - platform: gpio
+    name: "TCA6408 Output 0"
+    pin:
+      tca6408: tca6408_hub
+      number: 0
+      mode: OUTPUT
+
+
+# Example 2: Full Configuration with Interrupt (Recommended)
+i2c:
+  sda: GPIO4
+  scl: GPIO5
+  scan: true
+
+tca6408:
+  - id: tca6408_hub
+    address: 0x20
+    interrupt_pin: GPIO6
+
+# Outputs
+switch:
+  - platform: gpio
+    name: "Relay (Active Low)"
+    pin:
+      tca6408: tca6408_hub
+      number: 1
+      mode: OUTPUT
+      inverted: true
+
+# Inputs
+binary_sensor:
+  - platform: gpio
+    name: "Door Sensor"
+    pin:
+      tca6408: tca6408_hub
+      number: 3
+      mode: INPUT
+      inverted: true
+"""