v1.2.1 to fix DutyCycle bug, etc.

### Releases v1.2.1

1. Fix `DutyCycle` bug. Check [float precisison of DutyCycle only sometimes working #3](khoih-prog/SAMD_Slow_PWM#3)
2. Fix `New Period` display bug. Check [random dropouts #4](khoih-prog/SAMD_Slow_PWM#4)
3. Update examples

Author: khoih-prog

examples/ISR_8_PWMs_Array/ISR_8_PWMs_Array.ino

@@ -20,7 +20,7 @@
   #error This is designed only for Arduino or MegaCoreX megaAVR board! Please check your Tools->Board setting
 #endif
 
-// These define's must be placed at the beginning before #include "ESP32_PWM.h"
+// These define's must be placed at the beginning before #include "megaAVR_Slow_PWM.h"
 // _PWM_LOGLEVEL_ from 0 to 4
 // Don't define _PWM_LOGLEVEL_ > 0. Only for special ISR debugging only. Can hang the system.
 #define _PWM_LOGLEVEL_      3

examples/ISR_8_PWMs_Array_Complex/ISR_8_PWMs_Array_Complex.ino

@@ -20,7 +20,7 @@
   #error This is designed only for Arduino or MegaCoreX megaAVR board! Please check your Tools->Board setting
 #endif
 
-// These define's must be placed at the beginning before #include "ESP32_PWM.h"
+// These define's must be placed at the beginning before #include "megaAVR_Slow_PWM.h"
 // _PWM_LOGLEVEL_ from 0 to 4
 // Don't define _PWM_LOGLEVEL_ > 0. Only for special ISR debugging only. Can hang the system.
 #define _PWM_LOGLEVEL_      3

examples/ISR_8_PWMs_Array_Simple/ISR_8_PWMs_Array_Simple.ino

@@ -20,7 +20,7 @@
   #error This is designed only for Arduino or MegaCoreX megaAVR board! Please check your Tools->Board setting
 #endif
 
-// These define's must be placed at the beginning before #include "ESP32_PWM.h"
+// These define's must be placed at the beginning before #include "megaAVR_Slow_PWM.h"
 // _PWM_LOGLEVEL_ from 0 to 4
 // Don't define _PWM_LOGLEVEL_ > 0. Only for special ISR debugging only. Can hang the system.
 #define _PWM_LOGLEVEL_      3

examples/ISR_Changing_PWM/ISR_Changing_PWM.ino

@@ -20,7 +20,7 @@
   #error This is designed only for Arduino or MegaCoreX megaAVR board! Please check your Tools->Board setting
 #endif
 
-// These define's must be placed at the beginning before #include "ESP32_PWM.h"
+// These define's must be placed at the beginning before #include "megaAVR_Slow_PWM.h"
 // _PWM_LOGLEVEL_ from 0 to 4
 // Don't define _PWM_LOGLEVEL_ > 0. Only for special ISR debugging only. Can hang the system.
 #define _PWM_LOGLEVEL_      3

examples/ISR_Modify_PWM/ISR_Modify_PWM.ino

@@ -20,7 +20,7 @@
   #error This is designed only for Arduino or MegaCoreX megaAVR board! Please check your Tools->Board setting
 #endif
 
-// These define's must be placed at the beginning before #include "ESP32_PWM.h"
+// These define's must be placed at the beginning before #include "megaAVR_Slow_PWM.h"
 // _PWM_LOGLEVEL_ from 0 to 4
 // Don't define _PWM_LOGLEVEL_ > 0. Only for special ISR debugging only. Can hang the system.
 #define _PWM_LOGLEVEL_      3
@@ -86,19 +86,19 @@ void TimerHandler()
 uint32_t PWM_Pin    = LED_BUILTIN;
 
 // You can assign any interval for any timer here, in Hz
-float PWM_Freq1   = 1.0f;
+float PWM_Freq1   = 200.0f;   //1.0f;
 // You can assign any interval for any timer here, in Hz
-float PWM_Freq2   = 2.0f;
+float PWM_Freq2   = 100.0f;   //2.0f;
 
 // You can assign any interval for any timer here, in microseconds
 uint32_t PWM_Period1 = 1000000 / PWM_Freq1;
 // You can assign any interval for any timer here, in microseconds
 uint32_t PWM_Period2 = 1000000 / PWM_Freq2;
 
 // You can assign any duty_cycle for any PWM here, from 0-100
-float PWM_DutyCycle1  = 50.0;
+float PWM_DutyCycle1  = 1.0f;     //50.0f;
 // You can assign any duty_cycle for any PWM here, from 0-100
-float PWM_DutyCycle2  = 90.0;
+float PWM_DutyCycle2  = 5.55f;    //90.0f;
 
 // Channel number used to identify associated channel
 int channelNum;
@@ -219,8 +219,8 @@ void changePWM()
 {
   static uint8_t count = 1;
 
-  double PWM_Freq;
-  uint32_t PWM_DutyCycle;
+  float PWM_Freq;
+  float PWM_DutyCycle;
 
   if (count++ % 2)
   {

examples/multiFileProject/multiFileProject.ino

@@ -17,8 +17,8 @@
   #error This is designed only for Arduino or MegaCoreX megaAVR board! Please check your Tools->Board setting
 #endif
 
-#define MEGA_AVR_SLOW_PWM_VERSION_MIN_TARGET      F("megaAVR_SLOW_PWM v1.2.0")
-#define MEGA_AVR_SLOW_PWM_VERSION_MIN             1002000
+#define MEGA_AVR_SLOW_PWM_VERSION_MIN_TARGET      F("megaAVR_SLOW_PWM v1.2.1")
+#define MEGA_AVR_SLOW_PWM_VERSION_MIN             1002001
 
 #include "multiFileProject.h"