ntcReadf()

ntcReadf() returns the temperature of an NTC 3950 10kΩ sensor as a floating-point value in ℃.

float ntcReadf(uint8_t ch)

Commands

Command	Arguments	Return Value	Operation
`ntcReadf(ch)`	`uint8_t ch` — MPINO: analog pin number; MPAINO: overall analog input channel number	`float`	Returns the temperature of an NTC 3950 10kΩ sensor as a floating-point value in ℃.

Example

Connect an X input module to MPAINO-8A8R(T) and select Analog Input Module → X. Set CH0 DIP switches NTC and GND to ON, then connect the 10kΩ NTC sensor.

void setup() {
  Serial.begin(115200);
}
 
void loop() {
  const float temperature = ntcReadf(0);  // Read the 10kΩ NTC temperature as degrees Celsius.
  Serial.print(F("Temperature: "));
  Serial.println(temperature, 1);
  delay(500);
}

Precautions

ntcRead() is based on an NTC 3950, 10kΩ at 25 C sensor.
ntcReadf() divides the ntcRead() result by 10.0F, so its resolution remains 0.1 C.
Connecting a sensor with a different B value, reference resistance or wiring configuration causes temperature errors.
On MPAINO, the temperature is incorrect unless the DIP switch is in NTC mode.
On MPAINO, the first call internally initializes only the corresponding analog input module.

Built-in Commands in the Same Category

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ILOGICS Product Documentation

Table of Contents

ntcReadf()

Commands

Example

Precautions

Built-in Commands in the Same Category