Arduino Library for TC74, Temperature Sensor.
For more technical details, please refer to the datasheet.
TC74 is a thermal sensor with temperature resolution of 1 Celsius and I2C interface.
TC74 is internally programmed to have a default address (A5). But seven other addresses are available too, although the custom orders are required.
- A0: 0X48 (1001 000X)
- A1: 0X49 (1001 001X)
- A2: 0x4A (1001 010X)
- A3: 0X4B (1001 011X)
- A4: 0X4C (1001 100X)
- A5: 0X4D (1001 101X) *Default Address
- A6: 0X4E (1001 110X)
- A7: 0X4F (1001 111X)
Include the library, then simply create an object like this:
#include <TC74.h>
TC74 tmp(0X4D);To use this library with other I2C ports, you can simply create a TwoWire object then parse it into the 'begin' function:
// ESP32
#define I2C_SDA 33
#define I2C_SCL 32
TwoWire esp = TwoWire(0);
TC74 tmp(0x4D);
void setup(){
esp.begin(I2C_SDA, I2C_SCL, 1000000);
tmp.begin(&esp);
}void begin(TwoWire &wirePort = Wire);Initiate the TC74 library.
Can be configured to use other I2C ports from a 'TwoWire' object. For default I2C port, just leave the parameter blank.
float readTemperature(char c)Read the temperature from the sensor.
| input | return unit |
|---|---|
| 'c' or 'C' | Celsius |
| 'f' or 'F' | Fahrenheit |
| 'k' or 'K' | Kelvin |
| other | -999 |
^If TC74 sensors are connected incorrectly, this method will return -998.
void TC74Mode(bool mode);Configure the power mode of TC74. Accept literals ('NORMAL' or 'STANDBY').
| mode | operation | literals |
|---|---|---|
| logic 0 | NORMAL | NORMAL |
| logic 1 | STANDBY | STANDBY |
^NORMAL = Operate in Normal Mode
^STANDBY = Operate in Standby Mode (A/D converter is halted and the temperature data registers are frozen until return into normal mode)
bool isStandby();Check if TC74 is in STANDBY mode or not.
This function can be used to check if the device is ready to be read or not too.