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libraries/M5Unit-ENV/examples/UnitUnified/UnitENVIV/PlotToSerial/PlotToSerial.ino

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+/*
+ * SPDX-FileCopyrightText: 2024 M5Stack Technology CO LTD
+ *
+ * SPDX-License-Identifier: MIT
+ */
+/*
+  Example using M5UnitUnified for UnitENVIV
+  Required
+  - M5Unified: https://github.com/m5stack/M5Unified
+*/
+#include "main/PlotToSerial.cpp"

libraries/M5Unit-ENV/examples/UnitUnified/UnitENVIV/PlotToSerial/main/PlotToSerial.cpp

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+/*
+ * SPDX-FileCopyrightText: 2024 M5Stack Technology CO LTD
+ *
+ * SPDX-License-Identifier: MIT
+ */
+/*
+  Example using M5UnitUnified for UnitENVIV
+*/
+#include <M5Unified.h>
+#include <M5UnitUnified.h>
+#include <M5UnitUnifiedENV.h>
+#include <cmath>
+
+#define USING_ENV4
+
+namespace {
+auto& lcd = M5.Display;
+m5::unit::UnitUnified Units;
+
+#if defined(USING_ENV4)
+#pragma message "Using combined unit(ENV4)"
+m5::unit::UnitENV4 unitENV4;
+#else
+#pragma message "Using each unit"
+m5::unit::UnitSHT40 unitSHT40;
+m5::unit::UnitBMP280 unitBMP280;
+#endif
+
+#if defined(USING_ENV4)
+auto& sht40  = unitENV4.sht40;
+auto& bmp280 = unitENV4.bmp280;
+#else
+auto& sht40  = unitSHT40;
+auto& bmp280 = unitBMP280;
+#endif
+
+float calculate_altitude(const float pressure, const float seaLvhPa = 1013.25f)
+{
+    return 44330.f * (1.0f - pow((pressure / 100.f) / seaLvhPa, 0.1903f));
+}
+
+}  // namespace
+
+void setup()
+{
+    M5.begin();
+
+    auto pin_num_sda = M5.getPin(m5::pin_name_t::port_a_sda);
+    auto pin_num_scl = M5.getPin(m5::pin_name_t::port_a_scl);
+    M5_LOGI("getPin: SDA:%u SCL:%u", pin_num_sda, pin_num_scl);
+
+    {
+        using namespace m5::unit::bmp280;
+        auto cfg             = bmp280.config();
+        cfg.osrs_pressure    = Oversampling::X16;
+        cfg.osrs_temperature = Oversampling::X2;
+        cfg.filter           = Filter::Coeff16;
+        cfg.standby          = Standby::Time500ms;
+        bmp280.config(cfg);
+    }
+
+#if defined(USING_ENV4)
+    Wire.end();
+    Wire.begin(pin_num_sda, pin_num_scl, 400000U);
+
+    if (!Units.add(unitENV4, Wire) || !Units.begin()) {
+        M5_LOGE("Failed to begin");
+        lcd.clear(TFT_RED);
+        while (true) {
+            m5::utility::delay(10000);
+        }
+    }
+#else
+    Wire.end();
+    Wire.begin(pin_num_sda, pin_num_scl, 400000U);
+    if (!Units.add(unitSHT40, Wire) || !Units.add(unitBMP280, Wire) || !Units.begin()) {
+        M5_LOGE("Failed to begin");
+        lcd.clear(TFT_RED);
+        while (true) {
+            m5::utility::delay(10000);
+        }
+    }
+#endif
+
+    M5_LOGI("M5UnitUnified has been begun");
+    M5_LOGI("%s", Units.debugInfo().c_str());
+    lcd.clear(TFT_DARKGREEN);
+}
+
+void loop()
+{
+    M5.update();
+    Units.update();
+
+    if (sht40.updated()) {
+        M5.Log.printf(
+            ">SHT40Temp:%.4f\n"
+            ">Humidity:%.4f\n",
+            sht40.temperature(), sht40.humidity());
+    }
+    if (bmp280.updated()) {
+        auto p = bmp280.pressure();
+        M5.Log.printf(
+            ">BMP280Temp:%.4f\n"
+            ">Pressure:%.4f\n"
+            ">Altitude:%.4f\n",
+            bmp280.temperature(), p * 0.01f /* To hPa */, calculate_altitude(p));
+    }
+}