อาจจะลองใส่ while แทน if else ดู ในส่วนนี้ โดยเงื่อนไขคือ
while (PZEMVoltage == NAN &&
PZEMCurrent == NAN &&
PZEMPower == NAN &&
PZEMEnergy == NAN){
}
if (result == node.ku8MBSuccess) /* If there is a response */
{
uint32_t tempdouble = 0x00000000; /* Declare variable "tempdouble" as 32 bits with initial value is 0 */
PZEMVoltage = node.getResponseBuffer(0x0000) / 100.0; /* get the 16bit value for the voltage value, divide it by 100 (as per manual) */
// 0x0000 to 0x0008 are the register address of the measurement value
PZEMCurrent = node.getResponseBuffer(0x0001) / 100.0; /* get the 16bit value for the current value, divide it by 100 (as per manual) */
tempdouble = (node.getResponseBuffer(0x0003) << 16) + node.getResponseBuffer(0x0002); /* get the power value. Power value is consists of 2 parts (2 digits of 16 bits in front and 2 digits of 16 bits at the back) and combine them to an unsigned 32bit */
PZEMPower = tempdouble / 10.0; /* Divide the value by 10 to get actual power value (as per manual) */
tempdouble = (node.getResponseBuffer(0x0005) << 16) + node.getResponseBuffer(0x0004); /* get the energy value. Energy value is consists of 2 parts (2 digits of 16 bits in front and 2 digits of 16 bits at the back) and combine them to an unsigned 32bit */
PZEMEnergy = tempdouble;
}
else // ถ้าติดต่อ PZEM-017 ไม่ได้ ให้ใส่ค่า NAN(Not a Number)
{
PZEMVoltage = NAN;
PZEMCurrent = NAN;
PZEMPower = NAN;
PZEMEnergy = NAN;
}
