Bring back the groups that doxygen (1.9?) has dropped

Author: tfry-git

AutoMap.h

@@ -21,6 +21,9 @@
 
 #include "AutoRange.h"
 
+/** @defgroup sensortools Automatic range adjustment
+*/
+
 /** @ingroup sensortools
 Automatically map an input value to an output range without knowing the precise range of inputs beforehand.
 */

IntegerType.h

@@ -3,6 +3,9 @@
 
 #include <Arduino.h>
 
+/** @ingroup util
+Provides appropriate integer types that can bit the given number of bytes on this platform (at most 64).
+*/
 template<uint8_t BYTES> struct IntegerType {
     // at an odd value, such as 3 bytes? Add one more byte (up to at most 8 bytes)..
     typedef typename IntegerType<(BYTES < 8) ? (BYTES+1) : 8>::unsigned_type unsigned_type;

config/mozzi_config_documentation.h

@@ -1,8 +1,10 @@
 #ifdef FOR_DOXYGEN_ONLY
 /** @file */
 
-/*! @defgroup config Mozzi Configuration options
- * @brief Mozzi Configuration
+/*! @defgroup config Mozzi Configuration options */
+
+/** @ingroup config
+ * @page config_main Mozzi Configuration
  *
  * @section config_general Configuring Mozzi
  *

meta.h

@@ -6,6 +6,8 @@ Template meta-programming extras.
 #ifndef META_H_
 #define META_H_
 
+/** @defgroup util Assorted meta-programming utils
+*/
 
 /** @ingroup util
 Enables you to instantiate a template based on an integer value.

mozzi_analog.h

@@ -19,6 +19,8 @@
 // for setupFastAnalogRead()
 enum ANALOG_READ_SPEED {FAST_ADC,FASTER_ADC,FASTEST_ADC};
 
+/** @defgroup analog Functions for taking (non-blocking) analog readings. */
+
 /** 
 @ingroup analog
 This is automatically called in startMozzi.

mozzi_fixmath.h

@@ -18,7 +18,9 @@
  #include "WProgram.h"
 #endif
 
-/**@ingroup fixmath
+/** @defgroup fixmath Fast integer based fixed-point arithmetic */
+
+/** @ingroup fixmath
 @{
 */
 // types