move MAX,MIN,ABS to bits.h

src/knx/bits.h

@@ -13,6 +13,18 @@
 #define ntohl(x) htonl(x)
 #endif
 
+#ifndef MIN
+#define MIN(a, b) ((a < b) ? (a) : (b))
+#endif
+
+#ifndef MAX
+#define MAX(a, b) ((a > b) ? (a) : (b))
+#endif
+
+#ifndef ABS
+#define ABS(x)    ((x > 0) ? (x) : (-x))
+#endif
+
 #if defined(ARDUINO_ARCH_SAMD) || defined(ARDUINO_ARCH_STM32)
 #include <Arduino.h>
 #elif defined(ARDUINO_ARCH_ESP8266)
@@ -106,4 +118,4 @@ enum ParameterFloatEncodings
 #undef max
 #undef min
 // end of temporary undef
-#endif
+#endif

src/knx/rf_physical_layer_cc1101.cpp

@@ -12,10 +12,6 @@
 #include <stdio.h>
 #include <string.h>
 
-#define MIN(a, b) ((a < b) ? (a) : (b))
-#define MAX(a, b) ((a > b) ? (a) : (b))
-#define ABS(x)    ((x > 0) ? (x) : (-x))
-
 // Table for encoding 4-bit data into a 8-bit Manchester encoding.
 const uint8_t RfPhysicalLayerCC1101::manchEncodeTab[16] =   {0xAA,  // 0x0 Manchester encoded
                                                        0xA9,  // 0x1 Manchester encoded