EthercatDevice_Dmp.tryToGetSystemPowerVoltage()

[EthercatDevice_Dmp]

描述

Try to get the system voltage in a non-blocking manner. If it returns true, the reading process is complete, and you must immediately call getSystemPowerVoltage() to get the value. Otherwise, it indicates that the process is not yet complete.

語法

bool tryToGetSystemPowerVoltage();

參數

無

回傳值

Return a boolean value indicating whether the non-blocking read process has completed.

• true: Completed.
• false: In progress.

備註

This function must be called after a successful execution of EthercatMaster::begin(). This function is non-blocking and can be called within the callback functions.

範例程式碼

#include "Ethercat.h"

EthercatMaster master;
EthercatDevice_QECR11DT0H slave;
double SystemVoltage;

void CyclicCallback() {
  if (slave.tryToGetSystemPowerVoltage()) {
    SystemVoltage = slave.getSystemPowerVoltage();
  }
}

void setup() {
  Serial.begin(115200);

  master.begin();
  slave.attach(0, master);
  master.attachCyclicCallback(CyclicCallback);
  master.start();

}

void loop() {
  Serial.print("System Voltage: ");
  Serial.println(SystemVoltage);
  // ...
}

Please see the EtherCAT Library User Manual for more QEC EtherCAT instructions and API usage.