Updated screenshots and .gitignore of HelloWorld (#291)

* T-Deck Pro work in progress * Add .gitignore to HelloWorld
2025-06-15 13:49:00 +02:00
parent 29e4350517
commit 6de0f442fb
26 changed files with 1527 additions and 43 deletions
@@ -0,0 +1,67 @@
+#include "TdeckKeyboard.h"
+#include <Tactility/hal/i2c/I2c.h>
+#include <driver/i2c.h>
+
+#define TAG "tdeck_keyboard"
+
+#define TDECK_KEYBOARD_I2C_BUS_HANDLE I2C_NUM_0
+#define TDECK_KEYBOARD_SLAVE_ADDRESS 0x55
+
+static inline bool keyboard_i2c_read(uint8_t* output) {
+    return tt::hal::i2c::masterRead(TDECK_KEYBOARD_I2C_BUS_HANDLE, TDECK_KEYBOARD_SLAVE_ADDRESS, output, 1, 100 / portTICK_PERIOD_MS);
+}
+
+/**
+ * The callback simulates press and release events, because the T-Deck
+ * keyboard only publishes press events on I2C.
+ * LVGL currently works without those extra release events, but they
+ * are implemented for correctness and future compatibility.
+ *
+ * @param indev_drv
+ * @param data
+ */
+static void keyboard_read_callback(TT_UNUSED lv_indev_t* indev, lv_indev_data_t* data) {
+    static uint8_t last_buffer = 0x00;
+    uint8_t read_buffer = 0x00;
+
+    // Defaults
+    data->key = 0;
+    data->state = LV_INDEV_STATE_RELEASED;
+
+    if (keyboard_i2c_read(&read_buffer)) {
+        if (read_buffer == 0 && read_buffer != last_buffer) {
+            TT_LOG_D(TAG, "Released %d", last_buffer);
+            data->key = last_buffer;
+            data->state = LV_INDEV_STATE_RELEASED;
+        } else if (read_buffer != 0) {
+            TT_LOG_D(TAG, "Pressed %d", read_buffer);
+            data->key = read_buffer;
+            data->state = LV_INDEV_STATE_PRESSED;
+        }
+    }
+
+    last_buffer = read_buffer;
+}
+
+bool TdeckKeyboard::start(lv_display_t* display) {
+    deviceHandle = lv_indev_create();
+    lv_indev_set_type(deviceHandle, LV_INDEV_TYPE_KEYPAD);
+    lv_indev_set_read_cb(deviceHandle, &keyboard_read_callback);
+    lv_indev_set_display(deviceHandle, display);
+    lv_indev_set_user_data(deviceHandle, this);
+    return true;
+}
+
+bool TdeckKeyboard::stop() {
+    lv_indev_delete(deviceHandle);
+    deviceHandle = nullptr;
+    return true;
+}
+
+bool TdeckKeyboard::isAttached() const {
+    return tt::hal::i2c::masterHasDeviceAtAddress(TDECK_KEYBOARD_I2C_BUS_HANDLE, TDECK_KEYBOARD_SLAVE_ADDRESS, 100);
+}
+
+std::shared_ptr<tt::hal::keyboard::KeyboardDevice> createKeyboard() {
+    return std::make_shared<TdeckKeyboard>();
+}