Hydros 21 and Serial Comms

We are using the ModularSensors library and we’re wondering if there is

We are using the ModularSensors library and we’re wondering if there is a power cycle taking place that could affect any serial communication. There are no issues with communication or connection when sending data from the Mayfly via rosserial, but when sending data to the board, we lose connection with the rest of our system.

Below is a snippet of our loop:

/** —————–Start of Hydros CTD Sensor Read——————**/

// Send power to the sensor
hydros21.powerUp();

// Wake up the sensor
hydros21.wake();

// Update the sensor value
hydros21.update();

// Get the sensor readings as strings
String hydrosCondStr = hydros21Cond->getValueString();
String hydrosTempStr = hydros21Temp->getValueString();
String hydrosDepthStr = hydros21Depth->getValueString();

// Convert the strings to floats
hydrosCond = hydrosCondStr.toFloat();
hydrosTemp = hydrosTempStr.toFloat();
hydrosDepth = hydrosDepthStr.toFloat();

String hydros_data = date_time + “,” + String(hydrosTemp) + “,” + String(hydrosCond) + “,” + String(hydrosDepth/1000);

// Put the sensor back to sleep
hydros21.sleep();

// Cut the sensor power
hydros21.powerDown();

// Turn off the LED to show we’re done with the reading
digitalWrite(greenLED, LOW);
/** —————–End of Hydros CTD Sensor Read——————–**/

For the hydros21.powerUp(), hydros21.wake(), hydros21.update(), hydros21.sleep(), and hydros21.powerdown(), would any of these functions cause a communication problem with serial communication?