update readme.md (#44)

- update readme.md
- minor edits

Author: RobTillaart

CHANGELOG.md

@@ -6,6 +6,11 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
 
+## [0.4.1] - 2023-11-02
+- update readme.md
+- minor edits
+
+
 ## [0.4.0] - 2023-06-11
 - fix #42 roll + pitch "jumps" after full rotation.
 - fixed normalization code.

GY521.cpp

@@ -1,7 +1,7 @@
 //
 //    FILE: GY521.cpp
 //  AUTHOR: Rob Tillaart
-// VERSION: 0.4.0
+// VERSION: 0.4.1
 // PURPOSE: Arduino library for I2C GY521 accelerometer-gyroscope sensor
 //     URL: https://github.com/RobTillaart/GY521
 
@@ -124,7 +124,7 @@ int16_t GY521::read()
 
   //  duration interval
   now = micros();
-  float duration = (now - _lastMicros) * 1e-6;  // duration in seconds.
+  float duration = (now - _lastMicros) * 1e-6;  //  duration in seconds.
   _lastMicros = now;
 
 
@@ -180,7 +180,7 @@ int16_t GY521::read()
     //  correction at 375 due to the factor 0.96 in pitch
     if (_gay >= 375)   _gay -= 375;
     else if (_gay < 0) _gay += 375;
-    // correction at 360
+    //  correction at 360
     if (_gaz >= 360)   _gaz -= 360;
     else if (_gaz < 0) _gaz += 360;
   }
@@ -335,7 +335,7 @@ int16_t GY521::readGyro()
     //  correction at 375 due to the factor 0.96 in pitch
     if (_gay >= 375)   _gay -= 375;
     else if (_gay < 0) _gay += 375;
-    // correction at 360
+    //  correction at 360
     if (_gaz >= 360)   _gaz -= 360;
     else if (_gaz < 0) _gaz += 360;
   }
@@ -376,7 +376,7 @@ bool GY521::setAccelSensitivity(uint8_t as)
   {
     return false;
   }
-  // no need to write same value
+  //  no need to write same value
   if (((val >> 3) & 3) != _afs)
   {
     val &= 0xE7;
@@ -386,7 +386,7 @@ bool GY521::setAccelSensitivity(uint8_t as)
       return false;
     }
   }
-  // calculate conversion factor.  // 4 possible values => lookup table?
+  //  calculate conversion factor.  //  4 possible values => lookup table?
   _raw2g = (1 << _afs) * GY521_RAW2G;
   return true;
 }
@@ -397,7 +397,7 @@ uint8_t GY521::getAccelSensitivity()
   uint8_t val = getRegister(GY521_ACCEL_CONFIG);
   if (_error != GY521_OK)
   {
-    return _error; // return and propagate error (best thing to do)
+    return _error; //  return and propagate error (best thing to do)
   }
   _afs = (val >> 3) & 3;
   return _afs;
@@ -423,7 +423,7 @@ bool GY521::setGyroSensitivity(uint8_t gs)
       return false;
     }
   }
-  //  calculate conversion factor..  
+  //  calculate conversion factor..
   //  4 possible values => lookup table?
   _raw2dps = (1 << _gfs) * GY521_RAW2DPS;
   return true;
@@ -487,5 +487,5 @@ int16_t GY521::_WireRead2()
 }
 
 
-// -- END OF FILE --
+//  -- END OF FILE --
 

GY521.h

@@ -2,17 +2,16 @@
 //
 //    FILE: GY521.h
 //  AUTHOR: Rob Tillaart
-// VERSION: 0.4.0
+// VERSION: 0.4.1
 // PURPOSE: Arduino library for I2C GY521 accelerometer-gyroscope sensor
 //     URL: https://github.com/RobTillaart/GY521
-//
 
 
 #include "Arduino.h"
 #include "Wire.h"
 
 
-#define GY521_LIB_VERSION           (F("0.4.0"))
+#define GY521_LIB_VERSION           (F("0.4.1"))
 
 
 //  THROTTLE TIMING

README.md

@@ -2,8 +2,11 @@
 [![Arduino CI](https://github.com/RobTillaart/GY521/workflows/Arduino%20CI/badge.svg)](https://github.com/marketplace/actions/arduino_ci)
 [![Arduino-lint](https://github.com/RobTillaart/GY521/actions/workflows/arduino-lint.yml/badge.svg)](https://github.com/RobTillaart/GY521/actions/workflows/arduino-lint.yml)
 [![JSON check](https://github.com/RobTillaart/GY521/actions/workflows/jsoncheck.yml/badge.svg)](https://github.com/RobTillaart/GY521/actions/workflows/jsoncheck.yml)
+[![GitHub issues](https://img.shields.io/github/issues/RobTillaart/GY521.svg)](https://github.com/RobTillaart/GY521/issues)
+
 [![License: MIT](https://img.shields.io/badge/license-MIT-green.svg)](https://github.com/RobTillaart/GY521/blob/master/LICENSE)
 [![GitHub release](https://img.shields.io/github/release/RobTillaart/GY521.svg?maxAge=3600)](https://github.com/RobTillaart/GY521/releases)
+[![PlatformIO Registry](https://badges.registry.platformio.org/packages/robtillaart/library/GY521.svg)](https://registry.platformio.org/libraries/robtillaart/GY521)
 
 
 # GY521
@@ -164,19 +167,33 @@ See examples, use with care
 #### Must
 
 - improve documentation
+  - add tables where appropriate
+  - sensitivity, error codes etc
 - test test and test ...(ESP too)
 
-
 #### Should
 
+- add performance sketch
+
 #### Could
 
 - calibrate sketch could print code snippet to include...
+- add examples
+- improve unit tests?
 
 #### Wont
 
 - look for maths optimizations  (atan, hypot, performance)
-  - ==> hypot optimized.
+  - ==> hypot optimized (fastTrig?)
   - other ideas affect accuracy, so unless new ideas arise.
 - calibrate function in the lib
   - not as lib will grow too large.
+
+## Support
+
+If you appreciate my libraries, you can support the development and maintenance.
+Improve the quality of the libraries by providing issues and Pull Requests, or
+donate through PayPal or GitHub sponsors.
+
+Thank you,
+

library.json

@@ -15,9 +15,9 @@
     "type": "git",
     "url": "https://github.com/RobTillaart/GY521.git"
   },
-  "version": "0.4.0",
+  "version": "0.4.1",
   "license": "MIT",
-  "frameworks": "arduino",
+  "frameworks": "*",
   "platforms": "*",
   "headers": "GY521.h"
 }

library.properties

@@ -1,11 +1,11 @@
 name=GY521
-version=0.4.0
+version=0.4.1
 author=Rob Tillaart <[email protected]>
 maintainer=Rob Tillaart <[email protected]>
 sentence=Arduino library for GY521 angle measurement
 paragraph=
 category=Sensors
 url=https://github.com/RobTillaart/GY521
 architectures=*
-includes=GY521.h 
+includes=GY521.h
 depends=