recovery

lib/PZEMSensor/include/PZEMSensor.h

@@ -0,0 +1,51 @@
+#pragma once
+
+#include <Arduino.h>
+
+#include <SoftwareSerial.h>
+
+#define PZEM_DEFAULT_ADDR 0xF8
+
+struct PZEM_Info {
+    float voltage;
+    float current;
+    float power;
+    float energy;
+    float freq;
+    float pf;
+    uint16_t alarms;
+    PZEM_Info() : voltage{0}, current{0}, power{0}, energy{0}, freq{0}, pf{0}, alarms{0} {};
+};
+
+class PZEMSensor {
+   public:
+    PZEMSensor(Stream *serial, uint16_t addr = PZEM_DEFAULT_ADDR);
+
+    ~PZEMSensor();
+    PZEM_Info* values();
+    bool setAddress(uint8_t addr);
+    uint8_t getAddress();
+    bool setPowerAlarm(uint16_t watts);
+    bool getPowerAlarm();
+    bool reset();
+    void search();
+    // Get most up to date values from device registers and cache them
+    bool refresh();
+
+   private:
+    void init(void);
+
+   private:
+    PZEM_Info _values;   // Measured values
+    Stream *_serial;     // Serial interface
+    bool _isSoft;        // Is serial interface software
+    uint8_t _addr;       // Device address
+    uint64_t _lastRead;  // Last time values were updated
+
+    void init(uint8_t addr);                                                                                     // Init common to all constructors
+    uint16_t recieve(uint8_t *resp, uint16_t len);                                                               // Receive len bytes into a buffer
+    bool sendCmd8(uint8_t cmd, uint16_t rAddr, uint16_t val, bool check = false, uint16_t slave_addr = 0xFFFF);  // Send 8 byte command
+    void setCRC(uint8_t *buf, uint16_t len);                                                                     // Set the CRC for a buffer
+    bool checkCRC(const uint8_t *buf, uint16_t len);                                                             // Check CRC of buffer
+    uint16_t CRC16(const uint8_t *data, uint16_t len);                                                           // Calculate CRC of buffer
+};