[gt911] Add reset pin config (#7373)

esphome/components/gt911/touchscreen/__init__.py

@@ -1,11 +1,10 @@
-import esphome.codegen as cg
-import esphome.config_validation as cv
-
 from esphome import pins
+import esphome.codegen as cg
 from esphome.components import i2c, touchscreen
-from esphome.const import CONF_INTERRUPT_PIN, CONF_ID
+import esphome.config_validation as cv
-from .. import gt911_ns
+from esphome.const import CONF_ID, CONF_INTERRUPT_PIN, CONF_RESET_PIN
 
+from .. import gt911_ns
 
 GT911ButtonListener = gt911_ns.class_("GT911ButtonListener")
 GT911Touchscreen = gt911_ns.class_(
@@ -18,6 +17,7 @@ CONFIG_SCHEMA = touchscreen.TOUCHSCREEN_SCHEMA.extend(
     {
         cv.GenerateID(): cv.declare_id(GT911Touchscreen),
         cv.Optional(CONF_INTERRUPT_PIN): pins.internal_gpio_input_pin_schema,
+        cv.Optional(CONF_RESET_PIN): pins.gpio_output_pin_schema,
     }
 ).extend(i2c.i2c_device_schema(0x5D))
 
@@ -29,3 +29,5 @@ async def to_code(config):
 
     if interrupt_pin := config.get(CONF_INTERRUPT_PIN):
         cg.add(var.set_interrupt_pin(await cg.gpio_pin_expression(interrupt_pin)))
+    if reset_pin := config.get(CONF_RESET_PIN):
+        cg.add(var.set_reset_pin(await cg.gpio_pin_expression(reset_pin)))

esphome/components/gt911/touchscreen/gt911_touchscreen.cpp

@@ -26,6 +26,23 @@ static const size_t MAX_BUTTONS = 4;  // max number of buttons scanned
 void GT911Touchscreen::setup() {
   i2c::ErrorCode err;
   ESP_LOGCONFIG(TAG, "Setting up GT911 Touchscreen...");
+  if (this->reset_pin_ != nullptr) {
+    this->reset_pin_->setup();
+    this->reset_pin_->digital_write(false);
+    if (this->interrupt_pin_ != nullptr) {
+      // The interrupt pin is used as an input during reset to select the I2C address.
+      this->interrupt_pin_->pin_mode(gpio::FLAG_OUTPUT);
+      this->interrupt_pin_->setup();
+      this->interrupt_pin_->digital_write(false);
+    }
+    delay(2);
+    this->reset_pin_->digital_write(true);
+    delay(50);  // NOLINT
+    if (this->interrupt_pin_ != nullptr) {
+      this->interrupt_pin_->pin_mode(gpio::FLAG_INPUT);
+      this->interrupt_pin_->setup();
+    }
+  }
 
   // check the configuration of the int line.
   uint8_t data[4];

esphome/components/gt911/touchscreen/gt911_touchscreen.h

@@ -19,12 +19,14 @@ class GT911Touchscreen : public touchscreen::Touchscreen, public i2c::I2CDevice
   void dump_config() override;
 
   void set_interrupt_pin(InternalGPIOPin *pin) { this->interrupt_pin_ = pin; }
+  void set_reset_pin(GPIOPin *pin) { this->reset_pin_ = pin; }
   void register_button_listener(GT911ButtonListener *listener) { this->button_listeners_.push_back(listener); }
 
  protected:
   void update_touches() override;
 
   InternalGPIOPin *interrupt_pin_{};
+  GPIOPin *reset_pin_{};
   std::vector<GT911ButtonListener *> button_listeners_;
   uint8_t button_state_{0xFF};  // last button state. Initial FF guarantees first update.
 };

tests/components/gt911/common.yaml

@@ -0,0 +1,25 @@
+i2c:
+  - id: i2c_gt911
+    scl: 5
+    sda: 4
+
+display:
+  - platform: ssd1306_i2c
+    id: ssd1306_display
+    model: SSD1306_128X64
+    reset_pin: 10
+    pages:
+      - id: page1
+        lambda: |-
+          it.rectangle(0, 0, it.get_width(), it.get_height());
+
+touchscreen:
+  - platform: gt911
+    display: ssd1306_display
+    interrupt_pin: 20
+    reset_pin: 21
+
+binary_sensor:
+  - platform: gt911
+    id: touch_key_911
+    index: 0

tests/components/gt911/test.esp32-ard.yaml

@@ -1,24 +1 @@
-i2c:
+<<: !include common.yaml
-  - id: i2c_gt911
-    scl: 16
-    sda: 17
-
-display:
-  - platform: ssd1306_i2c
-    id: ssd1306_display
-    model: SSD1306_128X64
-    reset_pin: 13
-    pages:
-      - id: page1
-        lambda: |-
-          it.rectangle(0, 0, it.get_width(), it.get_height());
-
-touchscreen:
-  - platform: gt911
-    display: ssd1306_display
-    interrupt_pin: 14
-
-binary_sensor:
-  - platform: gt911
-    id: touch_key_911
-    index: 0

tests/components/gt911/test.esp32-c3-ard.yaml

@@ -1,24 +1 @@
-i2c:
+<<: !include common.yaml
-  - id: i2c_gt911
-    scl: 5
-    sda: 4
-
-display:
-  - platform: ssd1306_i2c
-    id: ssd1306_display
-    model: SSD1306_128X64
-    reset_pin: 3
-    pages:
-      - id: page1
-        lambda: |-
-          it.rectangle(0, 0, it.get_width(), it.get_height());
-
-touchscreen:
-  - platform: gt911
-    display: ssd1306_display
-    interrupt_pin: 6
-
-binary_sensor:
-  - platform: gt911
-    id: touch_key_911
-    index: 0

tests/components/gt911/test.esp32-c3-idf.yaml

@@ -1,24 +1 @@
-i2c:
+<<: !include common.yaml
-  - id: i2c_gt911
-    scl: 5
-    sda: 4
-
-display:
-  - platform: ssd1306_i2c
-    id: ssd1306_display
-    model: SSD1306_128X64
-    reset_pin: 3
-    pages:
-      - id: page1
-        lambda: |-
-          it.rectangle(0, 0, it.get_width(), it.get_height());
-
-touchscreen:
-  - platform: gt911
-    display: ssd1306_display
-    interrupt_pin: 6
-
-binary_sensor:
-  - platform: gt911
-    id: touch_key_911
-    index: 0

tests/components/gt911/test.esp32-idf.yaml

@@ -1,24 +1 @@
-i2c:
+<<: !include common.yaml
-  - id: i2c_gt911
-    scl: 16
-    sda: 17
-
-display:
-  - platform: ssd1306_i2c
-    id: ssd1306_display
-    model: SSD1306_128X64
-    reset_pin: 13
-    pages:
-      - id: page1
-        lambda: |-
-          it.rectangle(0, 0, it.get_width(), it.get_height());
-
-touchscreen:
-  - platform: gt911
-    display: ssd1306_display
-    interrupt_pin: 14
-
-binary_sensor:
-  - platform: gt911
-    id: touch_key_911
-    index: 0

tests/components/gt911/test.rp2040-ard.yaml

@@ -1,24 +1 @@
-i2c:
+<<: !include common.yaml
-  - id: i2c_gt911
-    scl: 5
-    sda: 4
-
-display:
-  - platform: ssd1306_i2c
-    id: ssd1306_display
-    model: SSD1306_128X64
-    reset_pin: 3
-    pages:
-      - id: page1
-        lambda: |-
-          it.rectangle(0, 0, it.get_width(), it.get_height());
-
-touchscreen:
-  - platform: gt911
-    display: ssd1306_display
-    interrupt_pin: 6
-
-binary_sensor:
-  - platform: gt911
-    id: touch_key_911
-    index: 0