C: undefined reference to function

Code:

//tmp117.h

#ifndef TMP117_H_
#define TMP117_H_

//[...]

/*
 * resets and initializes a TMP117 sensor.
 * @return true on success (sensor responds), false otherwise
 */
bool TMP117Init(TMP117Settings *settings);

//[...]

#endif /* TMP117_H_ */

Code:

//tmp117.c

#include "tmp117.h"

bool TMP117Init(TMP117Settings *settings) {
  //[...]
}

//[...]

Code:

#include "tmp117.h"

void setup() {
  // put your setup code here, to run once:

  TMP117Settings tmp117_settings[1];
  tmp117_settings[0].address = ADDRESS_0x48;
  
  for (int i = 0; i < 1; i++) {
    TMP117Init(&tmp117_settings[0]);
  }
}

Zitat

C:\Users\wergor\Documents\Arduino\TMP117test/TMP117test.ino:11: undefined reference to `TMP117Init(TMP117Settings*)'

Zitat

.pio\build\genericSTM32F103CB\src\main.cpp.o: In function `setup()':
main.cpp: (.text._Z5setupv+0xa): warning: undefined reference to `TMP117Init(TMP117Settings*)'