Support for BL0937 power monitoring chip with unmodified HLW8012 library (#737)

code/espurna/config/arduino.h

@@ -85,6 +85,7 @@
 //#define NEO_COOLCAM_POWER_PLUG_WIFI
 //#define ESTINK_WIFI_POWER_STRIP
 //#define PILOTAK_ESP_DIN_V1
+//#define BLITZWOLF_BWSHP2
 
 //--------------------------------------------------------------------------------
 // Features (values below are non-default values)

code/espurna/config/hardware.h

@@ -2240,6 +2240,52 @@
     #define LED3_RELAY          3
     #define LED4_RELAY          4
 
+// -----------------------------------------------------------------------------
+// Several boards under different names uing a power chip labelled BL0937 or HJL-01
+// * Blitzwolf (https://www.amazon.es/Inteligente-Temporización-Dispositivos-Cualquier-BlitzWolf/dp/B07BMQP142)
+// * HomeCube (https://www.amazon.de/Steckdose-Homecube-intelligente-Verbrauchsanzeige-funktioniert/dp/B076Q2LKHG)
+// * Coosa (https://www.amazon.com/COOSA-Monitoring-Function-Campatible-Assiatant/dp/B0788W9TDR)
+// * Goosund (http://www.gosund.com/?m=content&c=index&a=show&catid=6&id=5)
+// -----------------------------------------------------------------------------
+
+#elif defined(BLITZWOLF_BWSHP2)
+
+    // Info
+    #define MANUFACTURER        "BLITZWOLF"
+    #define DEVICE              "BWSHP2"
+
+    // Buttons
+    #define BUTTON1_PIN         13
+    #define BUTTON1_MODE        BUTTON_PUSHBUTTON | BUTTON_DEFAULT_HIGH
+    #define BUTTON1_RELAY       1
+
+    // Relays
+    #define RELAY1_PIN          15
+    #define RELAY1_TYPE         RELAY_TYPE_NORMAL
+
+    // LEDs
+    #define LED1_PIN            2
+    #define LED1_PIN_INVERSE    1
+    #define LED2_PIN            0
+    #define LED2_PIN_INVERSE    1
+    #define LED2_MODE           LED_MODE_FINDME
+    #define LED2_RELAY          1
+
+    // HJL01 / BL0937
+    #ifndef HLW8012_SUPPORT
+    #define HLW8012_SUPPORT     1
+    #endif
+    #define HLW8012_SEL_PIN     12
+    #define HLW8012_CF1_PIN     14
+    #define HLW8012_CF_PIN      5
+
+    #define HLW8012_SEL_CURRENT         LOW
+    #define HLW8012_CURRENT_RATIO       25740
+    #define HLW8012_VOLTAGE_RATIO       313400
+    #define HLW8012_POWER_RATIO         3414290
+    #define HLW8012_INTERRUPT_ON        FALLING
+
+
 // -----------------------------------------------------------------------------
 // TEST boards (do not use!!)
 // -----------------------------------------------------------------------------

code/espurna/config/sensors.h

@@ -383,7 +383,27 @@
 #define HLW8012_VOLTAGE_R_DOWN          ( 1000 )        // Downstream voltage resistor
 #endif
 
+#ifndef HLW8012_CURRENT_RATIO
+#define HLW8012_CURRENT_RATIO           0       // Set to 0 to use factory defaults
+#endif
+
+#ifndef HLW8012_VOLTAGE_RATIO
+#define HLW8012_VOLTAGE_RATIO           0       // Set to 0 to use factory defaults
+#endif
+
+#ifndef HLW8012_POWER_RATIO
+#define HLW8012_POWER_RATIO             0       // Set to 0 to use factory defaults
+#endif
+
+#ifndef HLW8012_USE_INTERRUPTS
 #define HLW8012_USE_INTERRUPTS          1       // Use interrupts to trap HLW8012 signals
+#endif
+
+#ifndef HLW8012_INTERRUPT_ON
+#define HLW8012_INTERRUPT_ON            CHANGE  // When to trigger the interrupt
+                                                // Use CHANGE for HLW8012
+                                                // Use FALLING for BL0937 / HJL0
+#endif
 
 //------------------------------------------------------------------------------
 // MHZ19 CO2 sensor

code/espurna/sensor.ino

@@ -644,13 +644,13 @@ void _sensorInit() {
 
                 double value;
 
-                value = getSetting("pwrRatioC", 0).toFloat();
+                value = getSetting("pwrRatioC", HLW8012_CURRENT_RATIO).toFloat();
                 if (value > 0) sensor->setCurrentRatio(value);
 
-                value = getSetting("pwrRatioV", 0).toFloat();
+                value = getSetting("pwrRatioV", HLW8012_VOLTAGE_RATIO).toFloat();
                 if (value > 0) sensor->setVoltageRatio(value);
 
-                value = getSetting("pwrRatioP", 0).toFloat();
+                value = getSetting("pwrRatioP", HLW8012_POWER_RATIO).toFloat();
                 if (value > 0) sensor->setPowerRatio(value);
 
             }

code/espurna/sensors/HLW8012Sensor.h

@@ -234,13 +234,13 @@ class HLW8012Sensor : public BaseSensor {
 
                 if (_interrupt_cf != _cf) {
                     if (_interrupt_cf != GPIO_NONE) _detach(_interrupt_cf);
-                    _attach(this, _cf, CHANGE);
+                    _attach(this, _cf, HLW8012_INTERRUPT_ON);
                     _interrupt_cf = _cf;
                 }
 
                 if (_interrupt_cf1 != _cf1) {
                     if (_interrupt_cf1 != GPIO_NONE) _detach(_interrupt_cf1);
-                    _attach(this, _cf1, CHANGE);
+                    _attach(this, _cf1, HLW8012_INTERRUPT_ON);
                     _interrupt_cf1 = _cf1;
                 }
 

code/platformio.ini

@@ -2423,3 +2423,29 @@ upload_port = "${env.ESPURNA_IP}"
 upload_flags = --auth=${env.ESPURNA_AUTH} --port 8266
 extra_scripts = ${common.extra_scripts}
 modules = ${common.modules} sensor
+
+[env:blitzwolf-bwshp2]
+platform = ${common.platform}
+framework = arduino
+board = esp01_1m
+lib_deps = ${common.lib_deps}
+lib_ignore = ${common.lib_ignore}
+build_flags = ${common.build_flags_1m0m} -DBLITZWOLF_BWSHP2
+upload_speed = 115200
+monitor_speed = 115200
+extra_scripts = ${common.extra_scripts}
+modules = ${common.modules} sensor
+
+[env:blitzwolf-bwshp2-ota]
+platform = ${common.platform}
+framework = arduino
+board = esp01_1m
+lib_deps = ${common.lib_deps}
+lib_ignore = ${common.lib_ignore}
+build_flags = ${common.build_flags_1m0m} -DBLITZWOLF_BWSHP2
+upload_speed = 115200
+monitor_speed = 115200
+upload_port = "${env.ESPURNA_IP}"
+upload_flags = --auth=${env.ESPURNA_AUTH} --port 8266
+extra_scripts = ${common.extra_scripts}
+modules = ${common.modules} sensor