avoid counters going above limit in INCREMENT()

when using INCREMENT() the counter would temporarily read equal to
limit, which could cause an issue if the task is preempted.

(this macro should be in a common header, though which header?)

src/drivers/airspeed/airspeed.h

@@ -165,5 +165,5 @@ protected:
 };
 
 /* helper macro for handling report buffer indices */
-#define INCREMENT(_x, _lim)	do { _x++; if (_x >= _lim) _x = 0; } while(0)
+#define INCREMENT(_x, _lim)	do { __typeof__(_x) _tmp = _x+1; if (_tmp >= _lim) _tmp = 0; _x = _tmp; } while(0)
 

src/drivers/bma180/bma180.cpp

@@ -234,7 +234,7 @@ private:
 };
 
 /* helper macro for handling report buffer indices */
-#define INCREMENT(_x, _lim)	do { _x++; if (_x >= _lim) _x = 0; } while(0)
+#define INCREMENT(_x, _lim)	do { __typeof__(_x) _tmp = _x+1; if (_tmp >= _lim) _tmp = 0; _x = _tmp; } while(0)
 
 
 BMA180::BMA180(int bus, spi_dev_e device) :

src/drivers/hmc5883/hmc5883.cpp

@@ -311,7 +311,7 @@ private:
 };
 
 /* helper macro for handling report buffer indices */
-#define INCREMENT(_x, _lim)	do { _x++; if (_x >= _lim) _x = 0; } while(0)
+#define INCREMENT(_x, _lim)	do { __typeof__(_x) _tmp = _x+1; if (_tmp >= _lim) _tmp = 0; _x = _tmp; } while(0)
 
 /*
  * Driver 'main' command.

src/drivers/l3gd20/l3gd20.cpp

@@ -300,7 +300,7 @@ private:
 };
 
 /* helper macro for handling report buffer indices */
-#define INCREMENT(_x, _lim)	do { _x++; if (_x >= _lim) _x = 0; } while(0)
+#define INCREMENT(_x, _lim)	do { __typeof__(_x) _tmp = _x+1; if (_tmp >= _lim) _tmp = 0; _x = _tmp; } while(0)
 
 
 L3GD20::L3GD20(int bus, const char* path, spi_dev_e device) :

src/drivers/lsm303d/lsm303d.cpp

@@ -421,7 +421,7 @@ private:
 
 
 /* helper macro for handling report buffer indices */
-#define INCREMENT(_x, _lim)	do { _x++; if (_x >= _lim) _x = 0; } while(0)
+#define INCREMENT(_x, _lim)	do { __typeof__(_x) _tmp = _x+1; if (_tmp >= _lim) _tmp = 0; _x = _tmp; } while(0)
 
 
 LSM303D::LSM303D(int bus, const char* path, spi_dev_e device) :

src/drivers/mb12xx/mb12xx.cpp

@@ -184,7 +184,7 @@ private:
 };
 
 /* helper macro for handling report buffer indices */
-#define INCREMENT(_x, _lim)	do { _x++; if (_x >= _lim) _x = 0; } while(0)
+#define INCREMENT(_x, _lim)	do { __typeof__(_x) _tmp = _x+1; if (_tmp >= _lim) _tmp = 0; _x = _tmp; } while(0)
 
 /*
  * Driver 'main' command.

src/drivers/ms5611/ms5611.cpp

@@ -77,7 +77,7 @@ static const int ERROR = -1;
 #endif
 
 /* helper macro for handling report buffer indices */
-#define INCREMENT(_x, _lim)	do { _x++; if (_x >= _lim) _x = 0; } while(0)
+#define INCREMENT(_x, _lim)	do { __typeof__(_x) _tmp = _x+1; if (_tmp >= _lim) _tmp = 0; _x = _tmp; } while(0)
 
 /* helper macro for arithmetic - returns the square of the argument */
 #define POW2(_x)		((_x) * (_x))