Modbus Driver fixing multiRequest

lib/GPIO/TCA9554PWR_Driver.cpp

@@ -9,6 +9,11 @@ namespace drivers
     writeRegister(TCA9554_CONFIG_REG, TCA9554_OUT_MODE); // set all pins as output (relay mode for this board)
   }
 
+  TCA9554PWR::~TCA9554PWR() {
+    writeRegister(TCA9554_OUTPUT_REG, Low);              // set all pins to Low state
+    writeRegister(TCA9554_CONFIG_REG, TCA9554_OUT_MODE); // set all pins as output (relay mode for this board)
+  }
+
   const bool TCA9554PWR::writeRegister(const uint8_t reg, const uint8_t val)
   {
     if (m_i2c.write(m_address, reg, {val}))

lib/GPIO/TCA9554PWR_Driver.h

@@ -35,6 +35,7 @@ namespace drivers
         };
 
         TCA9554PWR(I2C &i2c, const uint8_t address);
+        ~TCA9554PWR();
 
         const bool setOut(const uint8_t channel, const bool state);
         const bool setPort(const uint8_t state);