sns: add SI1145 sensor (#2216)

Co-authored-by: Joop Hilverink <33230021+HilverinkJ@users.noreply.github.com>

code/espurna/board.ino

@@ -294,6 +294,9 @@ PROGMEM const char espurna_sensors[] =
     #if ADE7953_SUPPORT
         "ADE7953 "
     #endif
+    #if SI1145_SUPPORT
+        "SI1145 "
+    #endif
     "";
 
 #endif // SENSOR_SUPPORT == 1

code/espurna/config/sensors.h

@@ -1225,6 +1225,32 @@
 #define EZOPH_SYNC_INTERVAL          1000    // Amount of time (in ms) sync new readings.
 #endif
 
+// -----------------------------------------------------------------------------
+// ADE7953 Shelly Sensor
+// Enable support by passing ADE7953_SUPPORT=1 build flag
+// -----------------------------------------------------------------------------
+
+#ifndef ADE7953_SUPPORT
+#define ADE7953_SUPPORT                  0
+#endif
+
+#ifndef ADE7953_ADDRESS
+#define ADE7953_ADDRESS                  0x38
+#endif
+
+// -----------------------------------------------------------------------------
+// SI1145 UV Sensor over I2C
+// Enable support by passing SI1145_SUPPORT=1 build flag
+// -----------------------------------------------------------------------------
+
+#ifndef SI1145_SUPPORT
+#define SI1145_SUPPORT                   0
+#endif
+
+#ifndef SI1145_ADDRESS
+#define SI1145_ADDRESS                   0x60
+#endif
+
 // -----------------------------------------------------------------------------
 // ADC
 // -----------------------------------------------------------------------------
@@ -1268,19 +1294,6 @@
 #define I2C_PERFORM_SCAN                1       // Perform a bus scan on boot
 #endif
 
-// -----------------------------------------------------------------------------
-// ADE7953 Shelly Sensor
-// Enable support by passing ADE7953_SUPPORT=1 build flag
-// -----------------------------------------------------------------------------
-
-#ifndef ADE7953_SUPPORT
-#define ADE7953_SUPPORT                  0
-#endif
-
-#ifndef ADE7953_ADDRESS
-#define ADE7953_ADDRESS                  0x38
-#endif
-
 // =============================================================================
 // Configuration helpers
 // =============================================================================
@@ -1294,6 +1307,7 @@
     EMON_ADC121_SUPPORT || \
     EMON_ADS1X15_SUPPORT || \
     SHT3X_I2C_SUPPORT || \
+    SI1145_SUPPORT || \
     SI7021_SUPPORT || \
     VEML6075_SUPPORT || \
     VL53L1X_SUPPORT \
@@ -1350,6 +1364,7 @@
     SDS011_SUPPORT || \
     SENSEAIR_SUPPORT || \
     SHT3X_I2C_SUPPORT || \
+    SI1145_SUPPORT || \
     SI7021_SUPPORT || \
     SONAR_SUPPORT || \
     T6613_SUPPORT || \

code/espurna/config/types.h

@@ -330,6 +330,7 @@
 #define SENSOR_LDR_ID               36
 #define SENSOR_ADE7953_ID           37
 #define SENSOR_T6613_ID             38
+#define SENSOR_SI1145_ID            39
 
 //--------------------------------------------------------------------------------
 // Magnitudes

code/espurna/sensor.h

@@ -311,5 +311,9 @@ void sensorLoop();
     #include "sensors/ADE7953Sensor.h"
 #endif
 
+#if SI1145_SUPPORT
+    #include "sensors/SI1145Sensor.h"
+#endif
+
 //--------------------------------------------------------------------------------
 

code/espurna/sensor.ino

@@ -1532,7 +1532,7 @@ void _sensorLoad() {
     }
     #endif
 
-     #if ADE7953_SUPPORT
+    #if ADE7953_SUPPORT
     {
         ADE7953Sensor * sensor = new ADE7953Sensor();
         sensor->setAddress(ADE7953_ADDRESS);
@@ -1540,6 +1540,14 @@ void _sensorLoad() {
     }
     #endif
 
+    #if SI1145_SUPPORT
+    {
+        SI1145Sensor * sensor = new SI1145Sensor();
+        sensor->setAddress(SI1145_ADDRESS);
+        _sensors.push_back(sensor);
+    }
+    #endif
+
 }
 
 void _sensorCallback(unsigned char i, unsigned char type, double value) {

code/espurna/sensors/I2CSensor.h

@@ -27,6 +27,9 @@
 
 #include "BaseSensor.h"
 
+// TODO: Must inherit from I2CSensor<>, not just I2CSensor. Even with default value :(
+//       Perhaps I2CSensor should be alias for I2CSensorBase?
+
 template <typename T = BaseSensor>
 class I2CSensor : public T {
 

code/espurna/sensors/SI1145Sensor.h

@@ -0,0 +1,80 @@
+// -----------------------------------------------------------------------------
+// SI1145 Sensor over I2C
+// Copyright (C) 2020 by @HilverinkJ (https://github.com/HilverinkJ)
+// Based on https://github.com/xoseperez/espurna/issues/2192#issuecomment-603430308
+// -----------------------------------------------------------------------------
+
+#if SENSOR_SUPPORT && SI1145_SUPPORT
+
+#pragma once
+
+#include <Arduino.h>
+#include <Adafruit_SI1145.h>
+
+#include "I2CSensor.h"
+
+class SI1145Sensor : public I2CSensor<> {
+
+     public:
+
+         SI1145Sensor() {
+             _count = 1;
+             _sensor_id = SENSOR_SI1145_ID;
+             _si1145 = new Adafruit_SI1145();
+         }
+
+         void begin() { 
+             static unsigned char addresses[1] = { SI1145_ADDRESS };
+             _address = _begin_i2c(_address, sizeof(addresses), addresses);
+             if (_address == 0) return;
+
+             if (!_si1145->begin()) {
+                 _ready = false;
+                 return;
+             }
+
+             // Adafruit library never sets any errors
+             _error = SENSOR_ERROR_OK;
+
+             _ready = true;
+         }
+
+         // ---------------------------------------------------------------------
+         // Sensor API
+         // ---------------------------------------------------------------------
+
+         // Descriptive name of the sensor
+         String description() {
+             char buffer[25];
+             snprintf(buffer, sizeof(buffer), "SI1145 @ I2C (0x%02X)", _address);
+             return String(buffer);
+         }
+
+         // Descriptive name of the slot # index
+         String slot(unsigned char index) {
+             return description();
+         };
+
+         // Type for slot # index
+         unsigned char type(unsigned char index) {
+             if (index == 0) return MAGNITUDE_UVI;
+             return MAGNITUDE_NONE;
+         }
+
+         // Pre-read hook (usually to populate registers with up-to-date data)
+         void pre() {
+             _uvi = _si1145->readUV() / 100.0;
+         }
+
+         // Current value for slot # index
+         double value(unsigned char index) {
+             if (index == 0) return _uvi; 
+             return 0.0;
+         }
+
+     protected: 
+         Adafruit_SI1145 * _si1145 = nullptr;
+         double _uvi = 0.0;
+};
+   
+#endif // SENSOR_SUPPORT && SI1145_SUPPORT

code/platformio.ini

@@ -157,6 +157,7 @@ lib_deps =
     https://github.com/pololu/vl53l1x-arduino#1.0.1
     https://github.com/mcleng/MAX6675-Library#2.0.1
     https://github.com/ThingPulse/esp8266-oled-ssd1306#3398c97
+    Adafruit SI1145 Library@~1.1.1
 lib_ignore =
     AsyncTCP
 

code/test/build/sensor.h

@@ -20,6 +20,7 @@
 #define SDS011_SUPPORT 1
 #define SENSEAIR_SUPPORT 1
 #define SHT3X_I2C_SUPPORT 1
+#define SI1145_SUPPORT 1
 #define SI7021_SUPPORT 1
 #define SONAR_SUPPORT 1
 #define T6613_SUPPORT 1