ble33_sensor.ino

#include <PDM.h>
#include <arm_math.h>
#include <Arduino_HTS221.h>
#include <Arduino_LPS22HB.h>
#include <Arduino_APDS9960.h>
#include <ArduinoBLE.h>


#define BLE_NAME "Moody-ble"

#define MAX_NAME_SIZE 256
#define BUFFER_SIZE 256
#define SERVICES 5

#define DARK 0
#define LIGHT 1
#define LAMP 2

static const long randSuff = random(100, 1000);
static char bleName[10];

BLEService pressureService("c3796395-a8d5-4f17-8c2e-a85ebd16f6f1");
BLEService temperatureService("9352b3a5-abeb-4ef6-8ba1-eba4a57926d1");
BLEService humidityService("e6c13adf-d41b-42b1-adc7-c78c947a01e4");
BLEService proximityService("5110b7cf-1c48-4435-ab04-133a3e2cba69");
BLEService colorService("9059c260-5136-4794-a1f7-34eae684fc9d");
BLEService gestureService("c02c3582-5538-447f-895e-b02ff08097f3");
BLEService micService("f6675d4c-cde6-4006-992c-11e6e2bbfad5");

BLEStringCharacteristic pressureName("f05b2077-779e-4bfc-ba0b-cf14e804d6fa", BLERead, MAX_NAME_SIZE);
BLEFloatCharacteristic pressureReading("5c23a789-c501-4e59-9547-238a924ee363", BLERead | BLENotify);

#if defined(TEMP_HUM)
BLEStringCharacteristic temperatureName("f05b2077-779e-4bfc-ba0b-cf14e804d6fa", BLERead, MAX_NAME_SIZE);
BLEFloatCharacteristic temperatureReading("5c23a789-c501-4e59-9547-238a924ee363", BLERead | BLENotify);

BLEStringCharacteristic humidityName("f05b2077-779e-4bfc-ba0b-cf14e804d6fa", BLERead, MAX_NAME_SIZE);
BLEFloatCharacteristic humidityReading("5c23a789-c501-4e59-9547-238a924ee363", BLERead | BLENotify);
#endif

BLEStringCharacteristic proximityName("f05b2077-779e-4bfc-ba0b-cf14e804d6fa", BLERead, MAX_NAME_SIZE);
BLEFloatCharacteristic proximityReading("5c23a789-c501-4e59-9547-238a924ee363", BLERead | BLENotify);

BLEStringCharacteristic colorName("f05b2077-779e-4bfc-ba0b-cf14e804d6fa", BLERead, MAX_NAME_SIZE);
BLEFloatCharacteristic colorReading("5c23a789-c501-4e59-9547-238a924ee363", BLERead | BLENotify);

BLEStringCharacteristic gestureName("f05b2077-779e-4bfc-ba0b-cf14e804d6fa", BLERead, MAX_NAME_SIZE);
BLEFloatCharacteristic gestureReading("5c23a789-c501-4e59-9547-238a924ee363", BLERead | BLENotify);

BLEStringCharacteristic micName("f05b2077-779e-4bfc-ba0b-cf14e804d6fa", BLERead, MAX_NAME_SIZE);
BLEFloatCharacteristic micReading("5c23a789-c501-4e59-9547-238a924ee363", BLERead | BLENotify);

int16_t microphoneBuffer[BUFFER_SIZE];
bool microphoneBufferReadyFlag;
int16_t microphoneRMSval;

float fval;

void Microphone_availablePDMDataCallback()
{
    int bytesAvailable = PDM.available();

    PDM.read(microphoneBuffer, bytesAvailable);
    microphoneBufferReadyFlag = true;
}

void setup()
{
    Serial.begin(115200);

    pinMode(LED_BUILTIN, OUTPUT);
    BLE.begin();
    BLE.setLocalName(BLE_NAME);
    BLE.advertise();

    pressureService.addCharacteristic(pressureName);
    pressureService.addCharacteristic(pressureReading);
    BLE.addService(pressureService);
    pressureName.writeValue("pressure");

#if defined(TEMP_HUM)
    temperatureService.addCharacteristic(temperatureName);
    temperatureService.addCharacteristic(temperatureReading);
    BLE.addService(temperatureService);
    temperatureName.writeValue("temperature");

    humidityService.addCharacteristic(humidityName);
    humidityService.addCharacteristic(humidityReading);
    BLE.addService(humidityService);
    humidityName.writeValue("humidity");
#endif

    proximityService.addCharacteristic(proximityName);
    proximityService.addCharacteristic(proximityReading);
    BLE.addService(proximityService);
    proximityName.writeValue("proximity");

    colorService.addCharacteristic(colorName);
    colorService.addCharacteristic(colorReading);
    BLE.addService(colorService);
    colorName.writeValue("color");

    gestureService.addCharacteristic(gestureName);
    gestureService.addCharacteristic(gestureReading);
    BLE.addService(gestureService);
    gestureName.writeValue("gesture");

    micService.addCharacteristic(micName);
    micService.addCharacteristic(micReading);
    BLE.addService(micService);
    micName.writeValue("mic");

    // PDM setup
    PDM.onReceive(Microphone_availablePDMDataCallback);
    PDM.begin(1, 16000);
    PDM.setGain(50);
    microphoneBufferReadyFlag = false;

    // APDS setup
    APDS.setGestureSensitivity(50);
    APDS.begin();
    APDS.setLEDBoost(0);

    // BAR and HTS setup
    BARO.begin();
#if defined(TEMP_HUM)
    HTS.begin();
#endif
    BLE.advertise();
}

void loop()
{
    BLEDevice central = BLE.central();
    if (central)
    {
        digitalWrite(LED_BUILTIN, HIGH);
        while (central.connected())
        {
            fval = BARO.readPressure();
            pressureReading.writeValue(fval);
            Serial.printf("%f  ", fval);

#if defined(TEMP_HUM)
            fval = HTS.readTemperature();
            temperatureReading.writeValue(fval);
            Serial.printf("%f  ", fval);

            fval = HTS.readHumidity();
            humidityReading.writeValue(fval);
            Serial.printf("%f  ", fval);
#endif
            if (APDS.proximityAvailable())
            {
                fval = (float)APDS.readProximity();
                proximityReading.writeValue(fval);
                Serial.printf("%f  ", fval);
            }
            if (APDS.colorAvailable())
            {
                int r, g, b;
                APDS.readColor(r, g, b);
                fval = (float) ((r < 5 && g < 5 && b < 5) ? DARK : (r < 15 && g < 15 && b < 15) ? LIGHT : LAMP);
                colorReading.writeValue(fval);
                Serial.printf("%f  ", fval);

            }
            if (APDS.gestureAvailable())
            {
                fval = (float) APDS.readGesture();
                gestureReading.writeValue(fval);
                Serial.printf("%f  ", fval);
            }
            if (microphoneBufferReadyFlag)
            {
                arm_rms_q15((q15_t *)microphoneBuffer, BUFFER_SIZE * sizeof(int16_t), (q15_t *)&microphoneRMSval);
                microphoneBufferReadyFlag = false;
                micReading.writeValue((float)microphoneRMSval);
                Serial.printf("%f  ", fval);
            }
            Serial.println();
        }
        digitalWrite(LED_BUILTIN, LOW);
    }
}