logging facility (log.c librarie), template, minor bug fixes, param init

RpiLedBars/src/drivers/selector/rpi_selector.c

@@ -5,6 +5,8 @@
 /***************************************************************************************************
  * Includes
  **************************************************************************************************/
+#include "rpi_selector.h"
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <wiringPi.h>
@@ -19,6 +21,7 @@
 unsigned const selectorPinNumber = 4;
 /* TODO use GPIO function from ../gpio/gipo.h (same pin number) */
 int selectorPins[4] = {5, 6, 26, 27};
+char modeStr[] = "0 | 0 | 0 | 0 \n";
 
 /***************************************************************************************************
  * Persistent Variables
@@ -49,12 +52,11 @@ int selector_get_position() {
   return -1;
 }
 
-void selector_print() {
-  char modeStr[] = "0 | 0 | 0 | 0 \n";
+char *selector_tostr() {
   for (size_t i = 0; i < selectorPinNumber; ++i) {
     modeStr[i * 4] = digitalRead(selectorPins[i]) ? '1' : '0';
   }
-  fprintf(stderr, modeStr);
+  return modeStr;
 }
 
 /***************************************************************************************************

RpiLedBars/src/drivers/selector/rpi_selector.h

@@ -33,8 +33,8 @@ void selector_setup();
 int selector_get_position();
 
 /**
- * \brief debug: print the selector position
+ * \brief Get string with selector debug info
  **/
-void selector_print();
+char *selector_tostr();
 
 #endif /* __RPI_SELECTOR_H__ */