Add AHT10 temperature and humidity sensor application

.gitignore

@@ -1,5 +1,6 @@
 .idea/
 .DS_Store
+.cache
 
 build/
 cmake-build-*/

Apps/AHT10Sensor/CMakeLists.txt

@@ -0,0 +1,16 @@
+cmake_minimum_required(VERSION 3.20)
+
+include($ENV{IDF_PATH}/tools/cmake/project.cmake)
+
+if (DEFINED ENV{TACTILITY_SDK_PATH})
+    set(TACTILITY_SDK_PATH $ENV{TACTILITY_SDK_PATH})
+else()
+    set(TACTILITY_SDK_PATH "../../release/TactilitySDK")
+    message(WARNING "⚠️ TACTILITY_SDK_PATH environment variable is not set, defaulting to ${TACTILITY_SDK_PATH}")
+endif()
+
+include("${TACTILITY_SDK_PATH}/TactilitySDK.cmake")
+set(EXTRA_COMPONENT_DIRS ${TACTILITY_SDK_PATH})
+
+project(AHT10Sensor)
+tactility_project(AHT10Sensor)

Apps/AHT10Sensor/main/CMakeLists.txt

@@ -0,0 +1,6 @@
+file(GLOB_RECURSE SOURCE_FILES Source/*.c*)
+
+idf_component_register(
+    SRCS ${SOURCE_FILES}
+    REQUIRES TactilitySDK driver
+)

Apps/AHT10Sensor/main/Source/aht10.c

@@ -0,0 +1,102 @@
+#include "aht10.h"
+
+#include <tactility/device.h>
+#include <tactility/drivers/i2c_controller.h>
+#include <tactility/freertos/freertos.h>
+
+#define AHT10_ADDR 0x38
+
+static struct Device* s_i2c = NULL;
+
+/* ------------------------------ */
+/* Find I2C controller             */
+/* ------------------------------ */
+
+static bool find_i2c(struct Device* dev, void* ctx)
+{
+    s_i2c = dev;
+    return false;
+}
+
+static bool setup_i2c(void)
+{
+    s_i2c = NULL;
+
+    device_for_each_of_type(
+        &I2C_CONTROLLER_TYPE,
+        NULL,
+        find_i2c);
+
+    if (!s_i2c)
+        return false;
+
+    return device_is_ready(s_i2c);
+}
+
+/* ------------------------------ */
+/* Init sensor                     */
+/* ------------------------------ */
+
+bool aht10_init(void)
+{
+    if (!setup_i2c())
+        return false;
+
+    uint8_t init_cmd[3] = {0xE1, 0x08, 0x00};
+
+    return i2c_controller_write(
+               s_i2c,
+               AHT10_ADDR,
+               init_cmd,
+               sizeof(init_cmd),
+               pdMS_TO_TICKS(100))
+           == ERROR_NONE;
+}
+
+/* ------------------------------ */
+/* Read measurement                */
+/* ------------------------------ */
+
+bool aht10_read(float* temperature, float* humidity)
+{
+    if (!s_i2c)
+        return false;
+
+    uint8_t cmd[3] = {0xAC, 0x33, 0x00};
+
+    if (i2c_controller_write(
+            s_i2c,
+            AHT10_ADDR,
+            cmd,
+            sizeof(cmd),
+            pdMS_TO_TICKS(100)) != ERROR_NONE)
+        return false;
+
+    vTaskDelay(pdMS_TO_TICKS(80));
+
+    uint8_t data[6];
+
+    if (i2c_controller_read(
+            s_i2c,
+            AHT10_ADDR,
+            data,
+            sizeof(data),
+            pdMS_TO_TICKS(100)) != ERROR_NONE)
+        return false;
+
+    uint32_t raw_h =
+        ((uint32_t)data[1] << 12) |
+        ((uint32_t)data[2] << 4) |
+        (data[3] >> 4);
+
+    uint32_t raw_t =
+        ((uint32_t)(data[3] & 0x0F) << 16) |
+        ((uint32_t)data[4] << 8) |
+        data[5];
+
+    *humidity = raw_h * 100.0f / 1048576.0f;
+    *temperature = raw_t * 200.0f / 1048576.0f - 50.0f;
+
+    return true;
+}
+

Apps/AHT10Sensor/main/Source/aht10.h

@@ -0,0 +1,14 @@
+#pragma once
+#include <stdbool.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+bool aht10_init(void);
+bool aht10_read(float* temperature, float* humidity);
+
+#ifdef __cplusplus
+}
+#endif
+

Apps/AHT10Sensor/main/Source/main.c

@@ -0,0 +1,103 @@
+#include <tt_app.h>
+#include <tt_lvgl_toolbar.h>
+
+#include "aht10.h"
+
+#include <lvgl.h>
+#include <stdio.h>
+
+static lv_obj_t* arc_temp;
+static lv_obj_t* label_temp;
+static lv_obj_t* label_hum;
+
+static lv_timer_t* sensor_timer = NULL;
+
+/* ------------------------------ */
+/* Sensor update                  */
+/* ------------------------------ */
+
+static void sensor_update(lv_timer_t* timer)
+{
+    if (!label_temp || !label_hum)
+        return;
+
+    float t, h;
+
+    if (!aht10_read(&t, &h))
+        return;
+
+    char buf[32];
+
+    int t_int = (int)t;
+    lv_arc_set_value(arc_temp, t_int);
+
+    snprintf(buf, sizeof(buf), "%.1f °C", t);
+    lv_label_set_text(label_temp, buf);
+
+    snprintf(buf, sizeof(buf), "Humidity %.1f %%", h);
+    lv_label_set_text(label_hum, buf);
+}
+
+/* ------------------------------ */
+/* Show app                       */
+/* ------------------------------ */
+
+static void onShowApp(AppHandle app, void* data, lv_obj_t* parent)
+{
+    lv_obj_t* toolbar =
+        tt_lvgl_toolbar_create_for_app(parent, app);
+    lv_obj_align(toolbar, LV_ALIGN_TOP_MID, 0, 0);
+
+    arc_temp = lv_arc_create(parent);
+    lv_obj_set_size(arc_temp, 200, 200);
+    lv_obj_align(arc_temp, LV_ALIGN_CENTER, 0, 30);
+
+    lv_arc_set_range(arc_temp, 0, 50);
+    lv_arc_set_value(arc_temp, 25);
+
+    lv_arc_set_rotation(arc_temp, 135);
+    lv_arc_set_bg_angles(arc_temp, 0, 270);
+
+    label_temp = lv_label_create(parent);
+    lv_label_set_text(label_temp, "--.- °C");
+    lv_obj_align(label_temp, LV_ALIGN_CENTER, 0, 10);
+
+    label_hum = lv_label_create(parent);
+    lv_label_set_text(label_hum, "Humidity --%");
+    lv_obj_align(label_hum, LV_ALIGN_CENTER, 0, 60);
+
+    aht10_init();
+
+    sensor_timer = lv_timer_create(sensor_update, 2000, NULL);
+}
+
+/* ------------------------------ */
+/* Hide app (IMPORTANT FIX)       */
+/* ------------------------------ */
+
+static void onHideApp(AppHandle app, void* data)
+{
+    if (sensor_timer) {
+        lv_timer_del(sensor_timer);
+        sensor_timer = NULL;
+    }
+
+    label_temp = NULL;
+    label_hum = NULL;
+    arc_temp = NULL;
+}
+
+/* ------------------------------ */
+/* Entry                          */
+/* ------------------------------ */
+
+int main(int argc, char* argv[])
+{
+    tt_app_register((AppRegistration) {
+        .onShow = onShowApp,
+        .onHide = onHideApp
+    });
+
+    return 0;
+}
+

Apps/AHT10Sensor/manifest.properties

@@ -0,0 +1,10 @@
+[manifest]
+version=0.1
+[target]
+sdk=0.7.0-dev
+platforms=esp32
+[app]
+id=one.tactility.aht10
+versionName=0.1.0
+versionCode=1
+name=AHT10 Sensor

Apps/AHT10Sensor/tactility.py

@@ -0,0 +1 @@
+../../tactility.py