v1.1.0

### Release v1.1.0

1. Fix bug. Don't use v1.0.0

Author: khoih-prog

README.md

@@ -14,6 +14,7 @@
   * [Important Notes about ISR](#important-notes-about-isr)
   * [Currently supported Boards](#currently-supported-boards)
 * [Changelog](#changelog)
+  * [Release v1.1.0](#release-v110)
   * [Initial Release v1.0.0](#initial-release-v100)
 * [Prerequisites](#prerequisites)
 * [Installation](#installation)
@@ -123,6 +124,10 @@ The catch is your function is now part of an ISR (Interrupt Service Routine), an
 
 ## Changelog
 
+### Release v1.1.0
+
+1. Fix bug. Don't use v1.0.0
+
 ### Initial Release v1.0.0
 
 1. Intial release to support to ATmega4809-based boards, such as **Arduino UNO WiFi Rev2, AVR_NANO_EVERY, etc.**
@@ -733,20 +738,21 @@ void loop()
 
 ### Debug Terminal Output Samples
 
-### 1. ISR_16_Timers_Array_Complex on Arduino megaAVR UNO WiFi Rev2
+### 1. ISR_16_Timers_Array_Complex on Arduino megaAVR Nano Every
 
-The following is the sample terminal output when running example [ISR_16_Timers_Array_Complex](examples/ISR_16_Timers_Array_Complex) on **Arduino megaAVR UNO WiFi Rev2** to demonstrate the accuracy of ISR Hardware Timer, **especially when system is very busy**.  The ISR timer is **programmed for 2s, is activated exactly after 2.000s !!!**
+The following is the sample terminal output when running example [ISR_16_Timers_Array_Complex](examples/ISR_16_Timers_Array_Complex) on **Arduino megaAVR Nano Every** to demonstrate the accuracy of ISR Hardware Timer, **especially when system is very busy**.  The ISR timer is **programmed for 2s, is activated exactly after 2.000s !!!**
 
 While software timer, **programmed for 2s, is activated after more than 10.000s in loop().
 
 ```
+
 Starting ISR_16_Timers_Array_Complex on megaAVR
-megaAVR_TimerInterrupt v1.0.0
+megaAVR_TimerInterrupt v1.1.0
 CPU Frequency = 16 MHz
-Starting  ITimer2 OK, millis() = 1
-SimpleTimer : 2, ms : 10007, Dms : 10007
-Timer : 0, programmed : 5000, actual : 4997
-Timer : 1, programmed : 10000, actual : 10005
+Starting  ITimer1 OK, millis() = 6
+SimpleTimer : 2, ms : 10006, Dms : 10006
+Timer : 0, programmed : 5000, actual : 5006
+Timer : 1, programmed : 10000, actual : 10010
 Timer : 2, programmed : 15000, actual : 0
 Timer : 3, programmed : 20000, actual : 0
 Timer : 4, programmed : 25000, actual : 0
@@ -761,11 +767,11 @@ Timer : 12, programmed : 65000, actual : 0
 Timer : 13, programmed : 70000, actual : 0
 Timer : 14, programmed : 75000, actual : 0
 Timer : 15, programmed : 80000, actual : 0
-SimpleTimer : 2, ms : 20071, Dms : 10064
-Timer : 0, programmed : 5000, actual : 5002
-Timer : 1, programmed : 10000, actual : 10004
-Timer : 2, programmed : 15000, actual : 15007
-Timer : 3, programmed : 20000, actual : 20009
+SimpleTimer : 2, ms : 20065, Dms : 10059
+Timer : 0, programmed : 5000, actual : 4994
+Timer : 1, programmed : 10000, actual : 9998
+Timer : 2, programmed : 15000, actual : 15014
+Timer : 3, programmed : 20000, actual : 20008
 Timer : 4, programmed : 25000, actual : 0
 Timer : 5, programmed : 30000, actual : 0
 Timer : 6, programmed : 35000, actual : 0
@@ -778,13 +784,13 @@ Timer : 12, programmed : 65000, actual : 0
 Timer : 13, programmed : 70000, actual : 0
 Timer : 14, programmed : 75000, actual : 0
 Timer : 15, programmed : 80000, actual : 0
-SimpleTimer : 2, ms : 30136, Dms : 10065
-Timer : 0, programmed : 5000, actual : 5001
-Timer : 1, programmed : 10000, actual : 9999
-Timer : 2, programmed : 15000, actual : 15001
-Timer : 3, programmed : 20000, actual : 20009
-Timer : 4, programmed : 25000, actual : 25007
-Timer : 5, programmed : 30000, actual : 30008
+SimpleTimer : 2, ms : 30125, Dms : 10060
+Timer : 0, programmed : 5000, actual : 4994
+Timer : 1, programmed : 10000, actual : 9998
+Timer : 2, programmed : 15000, actual : 14992
+Timer : 3, programmed : 20000, actual : 20008
+Timer : 4, programmed : 25000, actual : 25012
+Timer : 5, programmed : 30000, actual : 30006
 Timer : 6, programmed : 35000, actual : 0
 Timer : 7, programmed : 40000, actual : 0
 Timer : 8, programmed : 45000, actual : 0
@@ -795,15 +801,15 @@ Timer : 12, programmed : 65000, actual : 0
 Timer : 13, programmed : 70000, actual : 0
 Timer : 14, programmed : 75000, actual : 0
 Timer : 15, programmed : 80000, actual : 0
-SimpleTimer : 2, ms : 40202, Dms : 10066
-Timer : 0, programmed : 5000, actual : 5002
-Timer : 1, programmed : 10000, actual : 9999
-Timer : 2, programmed : 15000, actual : 15001
-Timer : 3, programmed : 20000, actual : 19998
-Timer : 4, programmed : 25000, actual : 25007
-Timer : 5, programmed : 30000, actual : 30008
-Timer : 6, programmed : 35000, actual : 35011
-Timer : 7, programmed : 40000, actual : 40007
+SimpleTimer : 2, ms : 40184, Dms : 10059
+Timer : 0, programmed : 5000, actual : 5004
+Timer : 1, programmed : 10000, actual : 10008
+Timer : 2, programmed : 15000, actual : 14992
+Timer : 3, programmed : 20000, actual : 20006
+Timer : 4, programmed : 25000, actual : 25012
+Timer : 5, programmed : 30000, actual : 30006
+Timer : 6, programmed : 35000, actual : 35010
+Timer : 7, programmed : 40000, actual : 40014
 Timer : 8, programmed : 45000, actual : 0
 Timer : 9, programmed : 50000, actual : 0
 Timer : 10, programmed : 55000, actual : 0
@@ -812,86 +818,87 @@ Timer : 12, programmed : 65000, actual : 0
 Timer : 13, programmed : 70000, actual : 0
 Timer : 14, programmed : 75000, actual : 0
 Timer : 15, programmed : 80000, actual : 0
-SimpleTimer : 2, ms : 50270, Dms : 10068
-Timer : 0, programmed : 5000, actual : 4998
-Timer : 1, programmed : 10000, actual : 10000
-Timer : 2, programmed : 15000, actual : 15001
-Timer : 3, programmed : 20000, actual : 19998
+SimpleTimer : 2, ms : 50245, Dms : 10061
+Timer : 0, programmed : 5000, actual : 5004
+Timer : 1, programmed : 10000, actual : 9998
+Timer : 2, programmed : 15000, actual : 15002
+Timer : 3, programmed : 20000, actual : 20006
 Timer : 4, programmed : 25000, actual : 25000
-Timer : 5, programmed : 30000, actual : 30008
-Timer : 6, programmed : 35000, actual : 35011
-Timer : 7, programmed : 40000, actual : 40007
-Timer : 8, programmed : 45000, actual : 45009
-Timer : 9, programmed : 50000, actual : 50007
+Timer : 5, programmed : 30000, actual : 30006
+Timer : 6, programmed : 35000, actual : 35010
+Timer : 7, programmed : 40000, actual : 40014
+Timer : 8, programmed : 45000, actual : 45008
+Timer : 9, programmed : 50000, actual : 50012
 Timer : 10, programmed : 55000, actual : 0
 Timer : 11, programmed : 60000, actual : 0
 Timer : 12, programmed : 65000, actual : 0
 Timer : 13, programmed : 70000, actual : 0
 Timer : 14, programmed : 75000, actual : 0
 Timer : 15, programmed : 80000, actual : 0
-SimpleTimer : 2, ms : 60338, Dms : 10068
-Timer : 0, programmed : 5000, actual : 4997
-Timer : 1, programmed : 10000, actual : 9999
-Timer : 2, programmed : 15000, actual : 14997
-Timer : 3, programmed : 20000, actual : 19999
+SimpleTimer : 2, ms : 60307, Dms : 10062
+Timer : 0, programmed : 5000, actual : 5004
+Timer : 1, programmed : 10000, actual : 9998
+Timer : 2, programmed : 15000, actual : 15002
+Timer : 3, programmed : 20000, actual : 19996
 Timer : 4, programmed : 25000, actual : 25000
-Timer : 5, programmed : 30000, actual : 29998
-Timer : 6, programmed : 35000, actual : 35011
-Timer : 7, programmed : 40000, actual : 40007
-Timer : 8, programmed : 45000, actual : 45009
-Timer : 9, programmed : 50000, actual : 50007
-Timer : 10, programmed : 55000, actual : 55009
-Timer : 11, programmed : 60000, actual : 60006
+Timer : 5, programmed : 30000, actual : 30004
+Timer : 6, programmed : 35000, actual : 35010
+Timer : 7, programmed : 40000, actual : 40014
+Timer : 8, programmed : 45000, actual : 45008
+Timer : 9, programmed : 50000, actual : 50012
+Timer : 10, programmed : 55000, actual : 55006
+Timer : 11, programmed : 60000, actual : 60010
 Timer : 12, programmed : 65000, actual : 0
 Timer : 13, programmed : 70000, actual : 0
 Timer : 14, programmed : 75000, actual : 0
 Timer : 15, programmed : 80000, actual : 0
-SimpleTimer : 2, ms : 70408, Dms : 10070
-Timer : 0, programmed : 5000, actual : 4997
-Timer : 1, programmed : 10000, actual : 9999
-Timer : 2, programmed : 15000, actual : 14997
-Timer : 3, programmed : 20000, actual : 19999
+SimpleTimer : 2, ms : 70369, Dms : 10062
+Timer : 0, programmed : 5000, actual : 4994
+Timer : 1, programmed : 10000, actual : 9998
+Timer : 2, programmed : 15000, actual : 15002
+Timer : 3, programmed : 20000, actual : 19996
 Timer : 4, programmed : 25000, actual : 25000
-Timer : 5, programmed : 30000, actual : 29998
-Timer : 6, programmed : 35000, actual : 34999
-Timer : 7, programmed : 40000, actual : 40007
-Timer : 8, programmed : 45000, actual : 45009
-Timer : 9, programmed : 50000, actual : 50007
-Timer : 10, programmed : 55000, actual : 55009
-Timer : 11, programmed : 60000, actual : 60006
-Timer : 12, programmed : 65000, actual : 65008
-Timer : 13, programmed : 70000, actual : 70010
+Timer : 5, programmed : 30000, actual : 30004
+Timer : 6, programmed : 35000, actual : 34998
+Timer : 7, programmed : 40000, actual : 40014
+Timer : 8, programmed : 45000, actual : 45008
+Timer : 9, programmed : 50000, actual : 50012
+Timer : 10, programmed : 55000, actual : 55006
+Timer : 11, programmed : 60000, actual : 60010
+Timer : 12, programmed : 65000, actual : 65014
+Timer : 13, programmed : 70000, actual : 70008
 Timer : 14, programmed : 75000, actual : 0
 Timer : 15, programmed : 80000, actual : 0
-SimpleTimer : 2, ms : 80479, Dms : 10071
-Timer : 0, programmed : 5000, actual : 4997
-Timer : 1, programmed : 10000, actual : 10000
+SimpleTimer : 2, ms : 80432, Dms : 10063
+Timer : 0, programmed : 5000, actual : 4994
+Timer : 1, programmed : 10000, actual : 9998
 Timer : 2, programmed : 15000, actual : 15002
-Timer : 3, programmed : 20000, actual : 19999
-Timer : 4, programmed : 25000, actual : 25001
-Timer : 5, programmed : 30000, actual : 29998
-Timer : 6, programmed : 35000, actual : 34999
-Timer : 7, programmed : 40000, actual : 40003
-Timer : 8, programmed : 45000, actual : 45009
-Timer : 9, programmed : 50000, actual : 50007
-Timer : 10, programmed : 55000, actual : 55009
-Timer : 11, programmed : 60000, actual : 60006
-Timer : 12, programmed : 65000, actual : 65008
-Timer : 13, programmed : 70000, actual : 70010
-Timer : 14, programmed : 75000, actual : 75008
-Timer : 15, programmed : 80000, actual : 80010
+Timer : 3, programmed : 20000, actual : 19996
+Timer : 4, programmed : 25000, actual : 25000
+Timer : 5, programmed : 30000, actual : 30004
+Timer : 6, programmed : 35000, actual : 34998
+Timer : 7, programmed : 40000, actual : 39992
+Timer : 8, programmed : 45000, actual : 45008
+Timer : 9, programmed : 50000, actual : 50012
+Timer : 10, programmed : 55000, actual : 55006
+Timer : 11, programmed : 60000, actual : 60010
+Timer : 12, programmed : 65000, actual : 65014
+Timer : 13, programmed : 70000, actual : 70008
+Timer : 14, programmed : 75000, actual : 75012
+Timer : 15, programmed : 80000, actual : 80016
+
 
 ```
 
 ---
 
-### 2. Change_Interval on Arduino megaAVR UNO WiFi Rev2
+### 2. Change_Interval on Arduino megaAVR Nano Every
 
-The following is the sample terminal output when running example [Change_Interval](examples/Change_Interval) on **Arduino megaAVR UNO WiFi Rev2** to demonstrate how to change Timer Interval on-the-fly
+The following is the sample terminal output when running example [Change_Interval](examples/Change_Interval) on **Arduino megaAVR Nano Every** to demonstrate how to change Timer Interval on-the-fly
 
 ```
 Starting Change_Interval on megaAVR
-megaAVR_TimerInterrupt v1.0.0
+megaAVR_TimerInterrupt v1.1.0
 CPU Frequency = 16 MHz
 Starting  ITimer1 OK, millis() = 1
 Starting  ITimer2 OK, millis() = 4
@@ -941,6 +948,10 @@ Sometimes, the library will only work if you update the board core to the latest
 
 ## Releases
 
+### Release v1.1.0
+
+1. Fix bug. Don't use v1.0.0
+
 ### Initial Release v1.0.0
 
 1. Intial release to support to ATmega4809-based boards, such as **Arduino UNO WiFi Rev2, AVR_NANO_EVERY, etc.**

examples/Argument_Complex/Argument_Complex.ino

@@ -78,7 +78,7 @@ void TimerHandler1(unsigned int outputPinsAddress)
   toggle1 = !toggle1;
 }
 
-#define TIMER1_INTERVAL_MS    1000
+#define TIMER1_INTERVAL_MS    5000
 
 void setup()
 {

examples/Change_Interval/Change_Interval.ino

@@ -53,8 +53,8 @@
 #endif
 
 
-#define TIMER1_INTERVAL_MS        100UL
-#define TIMER2_INTERVAL_MS        200UL
+#define TIMER1_INTERVAL_MS        1000UL
+#define TIMER2_INTERVAL_MS        2000UL
 
 volatile uint32_t Timer1Count = 0;
 volatile uint32_t Timer2Count = 0;

examples/TimerDuration/TimerDuration.ino

@@ -22,8 +22,8 @@
 // These define's must be placed at the beginning before #include "megaAVR_TimerInterrupt.h"
 // _TIMERINTERRUPT_LOGLEVEL_ from 0 to 4
 // Don't define _TIMERINTERRUPT_LOGLEVEL_ > 0. Only for special ISR debugging only. Can hang the system.
-#define TIMER_INTERRUPT_DEBUG         0
-#define _TIMERINTERRUPT_LOGLEVEL_     0
+#define TIMER_INTERRUPT_DEBUG         4
+#define _TIMERINTERRUPT_LOGLEVEL_     4
 
 #define USE_TIMER_0     false
 #define USE_TIMER_1     true
@@ -69,7 +69,7 @@ void TimerHandler2(unsigned int outputPin = LED_BUILTIN)
     pinMode(outputPin, OUTPUT);
   }
 
-#if !(TIMER_INTERRUPT_DEBUG > 1)
+#if (TIMER_INTERRUPT_DEBUG > 1)
   Serial.print("ITimer2 called, millis() = "); Serial.println(millis());
 #endif
 

examples/TimerInterruptTest/TimerInterruptTest.ino

@@ -22,8 +22,8 @@
 // These define's must be placed at the beginning before #include "megaAVR_TimerInterrupt.h"
 // _TIMERINTERRUPT_LOGLEVEL_ from 0 to 4
 // Don't define _TIMERINTERRUPT_LOGLEVEL_ > 0. Only for special ISR debugging only. Can hang the system.
-#define TIMER_INTERRUPT_DEBUG         0
-#define _TIMERINTERRUPT_LOGLEVEL_     0
+#define TIMER_INTERRUPT_DEBUG         2
+#define _TIMERINTERRUPT_LOGLEVEL_     4
 
 #define USE_TIMER_0     false
 #define USE_TIMER_1     true
@@ -85,10 +85,13 @@ unsigned int outputPin2 = A0;
 #define TIMER1_FREQUENCY      (float) (1000.0f / TIMER1_INTERVAL_MS)
 #define TIMER1_DURATION_MS    0 //(10 * TIMER1_INTERVAL_MS)
 
-#define TIMER2_INTERVAL_MS    13000
+#define TIMER2_INTERVAL_MS    150000
 #define TIMER2_FREQUENCY      (float) (1000.0f / TIMER2_INTERVAL_MS)
 #define TIMER2_DURATION_MS    0   //(20 * TIMER2_INTERVAL_MS)
 
+
+#define ADJUST_FACTOR         ( (float) 0.99850 )
+
 void setup()
 {
   Serial.begin(115200);
@@ -97,7 +100,9 @@ void setup()
   Serial.println(F("\nStarting TimerInterruptTest on megaAVR"));
   Serial.println(MEGA_AVR_TIMER_INTERRUPT_VERSION);
   Serial.print(F("CPU Frequency = ")); Serial.print(F_CPU / 1000000); Serial.println(F(" MHz"));
-
+  
+  Serial.print(F("CPU ADJUST_FACTOR = ")); Serial.println(ADJUST_FACTOR);
+  
   // Timer0 is used for micros(), millis(), delay(), etc and can't be used
   // Select Timer 1-2 for UNO, 0-5 for MEGA
   // Timer 2 is 8-bit timer, only for higher frequency
@@ -106,7 +111,7 @@ void setup()
 
   // Using ATmega328 used in UNO => 16MHz CPU clock ,
 
-  if (ITimer1.attachInterruptInterval(TIMER1_INTERVAL_MS, TimerHandler1, outputPin1, TIMER1_DURATION_MS))
+  if (ITimer1.attachInterruptInterval(TIMER1_INTERVAL_MS * ADJUST_FACTOR, TimerHandler1, outputPin1, TIMER1_DURATION_MS))
   {
     Serial.print(F("Starting  ITimer1 OK, millis() = ")); Serial.println(millis());
   }
@@ -117,7 +122,7 @@ void setup()
 
   ITimer2.init();
 
-  if (ITimer2.attachInterruptInterval(TIMER2_INTERVAL_MS, TimerHandler2, outputPin2, TIMER2_DURATION_MS))
+  if (ITimer2.attachInterruptInterval(TIMER2_INTERVAL_MS * ADJUST_FACTOR, TimerHandler2, outputPin2, TIMER2_DURATION_MS))
   {
     Serial.print(F("Starting  ITimer2 OK, millis() = ")); Serial.println(millis());
   }

library.json

@@ -1,6 +1,6 @@
 {
   "name": "megaAVR_TimerInterrupt",
-  "version": "1.0.0",
+  "version": "1.1.0",
   "keywords": "timer, interrupt, hardware, isr, isr-based, hardware-timer, mission-critical, accuracy, precise, megaave, nano, uno, atmega4809",
   "description": "This library enables you to use Interrupt from Hardware Timers on an Arduino megaAVR board, such as UNO WiFi Rev2, AVR_NANO_EVERY, etc. It now supports 16 ISR-based timers, while consuming only 1 hardware Timer. Timers' interval is very long (ulong millisecs). The most important feature is they're ISR-based timers. Therefore, their executions are not blocked by bad-behaving functions or tasks. This important feature is absolutely necessary for mission-critical tasks.",
   "authors":

library.properties

@@ -1,5 +1,5 @@
 name=megaAVR_TimerInterrupt
-version=1.0.0
+version=1.1.0
 author=Khoi Hoang
 maintainer=Khoi Hoang <khoih.prog@gmail.com>
 sentence=This library enables you to use Interrupt from Hardware Timers on an Arduino megaAVR board, such as UNO WiFi Rev2, AVR_NANO_EVERY, etc.

src/TimerInterrupt_Generic_Debug.h

@@ -18,19 +18,12 @@
   Therefore, their executions are not blocked by bad-behaving functions / tasks.
   This important feature is absolutely necessary for mission-critical tasks.
 
-  Version: 1.4.0
+  Version: 1.1.0
 
   Version Modified By   Date      Comments
   ------- -----------  ---------- -----------
-  1.0.0   K Hoang      23/11/2019 Initial coding
-  1.0.1   K Hoang      25/11/2019 New release fixing compiler error
-  1.0.2   K.Hoang      28/11/2019 Permit up to 16 super-long-time, super-accurate ISR-based timers to avoid being blocked
-  1.0.3   K.Hoang      01/12/2020 Add complex examples ISR_16_Timers_Array_Complex and ISR_16_Timers_Array_Complex
-  1.1.1   K.Hoang      06/12/2020 Add example Change_Interval. Bump up version to sync with other TimerInterrupt Libraries
-  1.1.2   K.Hoang      05/01/2021 Fix warnings. Optimize examples to reduce memory usage
-  1.2.0   K.Hoang      07/01/2021 Add better debug feature. Optimize code and examples to reduce RAM usage
-  1.3.0   K.Hoang      25/02/2021 Add support to AVR ATMEGA_32U4 such as Leonardo, YUN, ESPLORA, etc.
-  1.4.0   K.Hoang      01/04/2021 Add support to Adafruit 32U4 and 328(P) such as FEATHER32U4, FEATHER328P, etc.
+  1.0.0   K.Hoang      01/04/2021 Initial coding to support Arduino megaAVR ATmega4809-based boards (UNO WiFi Rev2, etc.)
+  1.1.0   K.Hoang      14/04/2021 Fix bug. Don't use v1.0.0
  *****************************************************************************************************************************/
 
 #pragma once