v1.3.0 to fix severe bug affecting start time

### Releases v1.3.0

1. Fix  affecting time between the starts. Check [Enable fixed timing between timer calls (vs fixed time btw. end of timer call and next call as implemented) #3](#3)

Author: khoih-prog

CONTRIBUTING.md

@@ -15,8 +15,8 @@ If you don't find anything, please [open a new issue](https://github.com/khoih-p
 Please ensure to specify the following:
 
 * Arduino IDE version (e.g. 1.8.19) or Platform.io version
-* `RP2040` Core Version (e.g. RP2040 core v1.9.14)
-* `RP2040` Board type (e.g. RASPBERRY_PI_PICO, ADAFRUIT_FEATHER_RP2040, GENERIC_RP2040, etc.)
+* `RP2040` Core Version (e.g. RP2040 core v2.5.4)
+* `RP2040` Board type (e.g. RASPBERRY_PI_PICO, RASPBERRY_PI_PICO_W, ADAFRUIT_FEATHER_RP2040, GENERIC_RP2040, etc.)
 * Contextual information (e.g. what you were trying to achieve)
 * Simplest possible steps to reproduce
 * Anything that might be relevant in your opinion, such as:
@@ -28,13 +28,13 @@ Please ensure to specify the following:
 
 ```
 Arduino IDE version: 1.8.19
-RP2040 core v1.9.14
+RP2040 core v2.5.4
 RASPBERRY_PI_PICO Module
 OS: Ubuntu 20.04 LTS
-Linux xy-Inspiron-3593 5.4.0-96-generic #109-Ubuntu SMP Wed Jan 12 16:49:16 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux
+Linux xy-Inspiron-3593 5.15.0-46-generic #49~20.04.1-Ubuntu SMP Thu Aug 4 19:15:44 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux
 
 Context:
-I encountered a crash while using TimerInterrupt.
+I encountered a crash while using this library
 
 Steps to reproduce:
 1. ...
@@ -51,3 +51,4 @@ There are usually some outstanding feature requests in the [existing issues list
 ### Sending Pull Requests
 
 Pull Requests with changes and fixes are also welcome!
+

README.md

@@ -2,11 +2,12 @@
 
 [![arduino-library-badge](https://www.ardu-badge.com/badge/RPI_PICO_TimerInterrupt.svg?)](https://www.ardu-badge.com/RPI_PICO_TimerInterrupt)
 [![GitHub release](https://img.shields.io/github/release/khoih-prog/RPI_PICO_TimerInterrupt.svg)](https://github.com/khoih-prog/RPI_PICO_TimerInterrupt/releases)
-[![GitHub](https://img.shields.io/github/license/mashape/apistatus.svg)](https://github.com/khoih-prog/RPI_PICO_TimerInterrupt/blob/master/LICENSE)
+[![GitHub](https://img.shields.io/github/license/mashape/apistatus.svg)](https://github.com/khoih-prog/RPI_PICO_TimerInterrupt/blob/main/LICENSE)
 [![contributions welcome](https://img.shields.io/badge/contributions-welcome-brightgreen.svg?style=flat)](#Contributing)
 [![GitHub issues](https://img.shields.io/github/issues/khoih-prog/RPI_PICO_TimerInterrupt.svg)](http://github.com/khoih-prog/RPI_PICO_TimerInterrupt/issues)
 
-<a href="https://www.buymeacoffee.com/khoihprog6" target="_blank"><img src="https://cdn.buymeacoffee.com/buttons/v2/default-yellow.png" alt="Buy Me A Coffee" style="height: 50px !important;width: 181px !important;" ></a>
+<a href="https://www.buymeacoffee.com/khoihprog6" title="Donate to my libraries using BuyMeACoffee"><img src="https://cdn.buymeacoffee.com/buttons/v2/default-yellow.png" alt="Donate to my libraries using BuyMeACoffee" style="height: 50px !important;width: 181px !important;" ></a>
+<a href="https://www.buymeacoffee.com/khoihprog6" title="Donate to my libraries using BuyMeACoffee"><img src="https://img.shields.io/badge/buy%20me%20a%20coffee-donate-orange.svg?logo=buy-me-a-coffee&logoColor=FFDD00" style="height: 20px !important;width: 200px !important;" ></a>
 
 ---
 ---
@@ -76,6 +77,8 @@
 
 Please have a look at [HOWTO Fix `Multiple Definitions` Linker Error](#howto-fix-multiple-definitions-linker-error)
 
+---
+
 ### Why do we need this [RPI_PICO_TimerInterrupt library](https://github.com/khoih-prog/RPI_PICO_TimerInterrupt)
 
 ## Features
@@ -119,7 +122,7 @@ The catch is **your function is now part of an ISR (Interrupt Service Routine),
 
 ### Currently supported Boards
 
-1. RP2040-based boards such as **RASPBERRY_PI_PICO, ADAFRUIT_FEATHER_RP2040, Nano_RP2040_Connect, GENERIC_RP2040**, etc.
+1. RP2040-based boards such as **RASPBERRY_PI_PICO, RASPBERRY_PI_PICO_W, ADAFRUIT_FEATHER_RP2040, Nano_RP2040_Connect, GENERIC_RP2040**, etc., using [`arduino-pico core`](https://github.com/earlephilhower/arduino-pico)
 
 ---
 
@@ -137,7 +140,7 @@ The catch is **your function is now part of an ISR (Interrupt Service Routine),
 ## Prerequisites
 
 1. [`Arduino IDE 1.8.19+` for Arduino](https://github.com/arduino/Arduino). [![GitHub release](https://img.shields.io/github/release/arduino/Arduino.svg)](https://github.com/arduino/Arduino/releases/latest)
-2. [`Earle Philhower's arduino-pico core v1.10.0+`](https://github.com/earlephilhower/arduino-pico) for RP2040-based boards such as **RASPBERRY_PI_PICO, ADAFRUIT_FEATHER_RP2040 and GENERIC_RP2040**, etc. [![GitHub release](https://img.shields.io/github/release/earlephilhower/arduino-pico.svg)](https://github.com/earlephilhower/arduino-pico/releases/latest)
+2. [`Earle Philhower's arduino-pico core v2.5.4+`](https://github.com/earlephilhower/arduino-pico) for RP2040-based boards such as **RASPBERRY_PI_PICO, ADAFRUIT_FEATHER_RP2040 and GENERIC_RP2040**, etc. [![GitHub release](https://img.shields.io/github/release/earlephilhower/arduino-pico.svg)](https://github.com/earlephilhower/arduino-pico/releases/latest)
 3. To use with certain example
    - [`SimpleTimer library`](https://github.com/jfturcot/SimpleTimer) for [ISR_Timers_Array_Simple](examples/ISR_Timers_Array_Simple) and [ISR_16_Timers_Array_Complex](examples/ISR_16_Timers_Array_Complex) examples.
 
@@ -157,15 +160,15 @@ You can also use this link [![arduino-library-badge](https://www.ardu-badge.com/
 Another way to install is to:
 
 1. Navigate to [**RPI_PICO_TimerInterrupt**](https://github.com/khoih-prog/RPI_PICO_TimerInterrupt) page.
-2. Download the latest release `RPI_PICO_TimerInterrupt-master.zip`.
-3. Extract the zip file to `RPI_PICO_TimerInterrupt-master` directory 
-4. Copy whole `RPI_PICO_TimerInterrupt-master` folder to Arduino libraries' directory such as `~/Arduino/libraries/`.
+2. Download the latest release `RPI_PICO_TimerInterrupt-main.zip`.
+3. Extract the zip file to `RPI_PICO_TimerInterrupt-main` directory 
+4. Copy whole `RPI_PICO_TimerInterrupt-main` folder to Arduino libraries' directory such as `~/Arduino/libraries/`.
 
 ### VS Code & PlatformIO
 
 1. Install [VS Code](https://code.visualstudio.com/)
 2. Install [PlatformIO](https://platformio.org/platformio-ide)
-3. Install [**RPI_PICO_TimerInterrupt** library](https://platformio.org/lib/show/12177/RPI_PICO_TimerInterrupt) or [**RPI_PICO_TimerInterrupt** library](https://platformio.org/lib/show/12273/RPI_PICO_TimerInterrupt) by using [Library Manager](https://platformio.org/lib/show/12177/RPI_PICO_TimerInterrupt/installation). Search for **RPI_PICO_TimerInterrupt** in [Platform.io Author's Libraries](https://platformio.org/lib/search?query=author:%22Khoi%20Hoang%22)
+3. Install [**RPI_PICO_TimerInterrupt** library](https://registry.platformio.org/libraries/khoih-prog/RPI_PICO_TimerInterrupt) by using [Library Manager](https://registry.platformio.org/libraries/khoih-prog/RPI_PICO_TimerInterrupt/installation). Search for **RPI_PICO_TimerInterrupt** in [Platform.io Author's Libraries](https://platformio.org/lib/search?query=author:%22Khoi%20Hoang%22)
 4. Please visit documentation for the other options and examples at [Project Configuration File](https://docs.platformio.org/page/projectconf.html)
 
 
@@ -445,152 +448,8 @@ void setup()
 
 ### Example [ISR_Timers_Array_Simple](examples/ISR_Timers_Array_Simple)
 
-```
-// These define's must be placed at the beginning before #include "TimerInterrupt_Generic.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         1
-#define _TIMERINTERRUPT_LOGLEVEL_     4
-
-// Can be included as many times as necessary, without `Multiple Definitions` Linker Error
-#include "RPi_Pico_TimerInterrupt.h"
-
-// To be included only in main(), .ino with setup() to avoid `Multiple Definitions` Linker Error
-#include "RPi_Pico_ISR_Timer.h"
-
-#include <SimpleTimer.h>              // https://github.com/jfturcot/SimpleTimer
-
-// Init RPI_PICO_Timer
-RPI_PICO_Timer ITimer1(1);
-
-RPI_PICO_ISR_Timer ISR_timer;
-
-#ifndef LED_BUILTIN
-  #define LED_BUILTIN       25
-#endif
-
-#define LED_TOGGLE_INTERVAL_MS        1000L
-
-// You have to use longer time here if having problem because Arduino AVR clock is low, 16MHz => lower accuracy.
-// Tested OK with 1ms when not much load => higher accuracy.
-#define TIMER_INTERVAL_MS            1L
-
-volatile uint32_t startMillis = 0;
+https://github.com/khoih-prog/RPI_PICO_TimerInterrupt/blob/f2ca9ced6ef985653cb234a3268b237b0fa257f1/examples/ISR_Timers_Array_Simple/ISR_Timers_Array_Simple.ino#L23-L166
 
-volatile uint32_t deltaMillis2s = 0;
-volatile uint32_t deltaMillis5s = 0;
-
-volatile uint32_t previousMillis2s = 0;
-volatile uint32_t previousMillis5s = 0;
-
-
-bool TimerHandler(struct repeating_timer *t)
-{
-  static bool toggle  = false;
-  static int timeRun  = 0;
-
-  ISR_timer.run();
-
-  // Toggle LED every LED_TOGGLE_INTERVAL_MS = 2000ms = 2s
-  if (++timeRun == ((LED_TOGGLE_INTERVAL_MS) / TIMER_INTERVAL_MS) )
-  {
-    timeRun = 0;
-
-    //timer interrupt toggles pin LED_BUILTIN
-    digitalWrite(LED_BUILTIN, toggle);
-    toggle = !toggle;
-  }
-
-  return true;
-}
-
-void doingSomething2s()
-{
-  unsigned long currentMillis  = millis();
-
-  deltaMillis2s    = currentMillis - previousMillis2s;
-  previousMillis2s = currentMillis;
-}
-
-void doingSomething5s()
-{
-  unsigned long currentMillis  = millis();
-
-  deltaMillis5s    = currentMillis - previousMillis5s;
-  previousMillis5s = currentMillis;
-}
-
-/////////////////////////////////////////////////
-
-#define SIMPLE_TIMER_MS        2000L
-
-// Init SimpleTimer
-SimpleTimer simpleTimer;
-
-// Here is software Timer, you can do somewhat fancy stuffs without many issues.
-// But always avoid
-// 1. Long delay() it just doing nothing and pain-without-gain wasting CPU power.Plan and design your code / strategy ahead
-// 2. Very long "do", "while", "for" loops without predetermined exit time.
-void simpleTimerDoingSomething2s()
-{
-  static unsigned long previousMillis = startMillis;
-
-  unsigned long currMillis = millis();
-
-  Serial.print(F("SimpleTimer : programmed ")); Serial.print(SIMPLE_TIMER_MS);
-  Serial.print(F("ms, current time ms : ")); Serial.print(currMillis);
-  Serial.print(F(", Delta ms : ")); Serial.println(currMillis - previousMillis);
-
-  Serial.print(F("Timer2s actual : ")); Serial.println(deltaMillis2s);
-  Serial.print(F("Timer5s actual : ")); Serial.println(deltaMillis5s);
-  
-  previousMillis = currMillis;
-}
-
-////////////////////////////////////////////////
-
-void setup()
-{
-  pinMode(LED_BUILTIN, OUTPUT);
-
-  Serial.begin(115200);
-  while (!Serial);
-
-  Serial.print(F("\nStarting ISR_Timers_Array_Simple on ")); Serial.println(BOARD_NAME);
-  Serial.println(RPI_PICO_TIMER_INTERRUPT_VERSION);
-  Serial.print(F("CPU Frequency = ")); Serial.print(F_CPU / 1000000); Serial.println(F(" MHz"));
-
-  if (ITimer1.attachInterruptInterval(TIMER_INTERVAL_MS * 1000, TimerHandler))
-  {
-    Serial.print(F("Starting ITimer1 OK, millis() = ")); Serial.println(millis());
-  }
-  else
-    Serial.println(F("Can't set ITimer1. Select another freq. or timer"));
-
-  previousMillis5s = previousMillis2s = millis();  
-
-  ISR_timer.setInterval(2000L, doingSomething2s);
-  ISR_timer.setInterval(5000L, doingSomething5s);
-
-  // You need this timer for non-critical tasks. Avoid abusing ISR if not absolutely necessary.
-  simpleTimer.setInterval(SIMPLE_TIMER_MS, simpleTimerDoingSomething2s);
-}
-
-#define BLOCKING_TIME_MS      10000L
-
-void loop()
-{
-  // This unadvised blocking task is used to demonstrate the blocking effects onto the execution and accuracy to Software timer
-  // You see the time elapse of ISR_Timer still accurate, whereas very unaccurate for Software Timer
-  // The time elapse for 2000ms software timer now becomes 3000ms (BLOCKING_TIME_MS)
-  // While that of ISR_Timer is still prefect.
-  delay(BLOCKING_TIME_MS);
-
-  // You need this Software timer for non-critical tasks. Avoid abusing ISR if not absolutely necessary
-  // You don't need to and never call ISR_Timer.run() here in the loop(). It's already handled by ISR timer.
-  simpleTimer.run();
-}
-```
 ---
 ---
 
@@ -605,7 +464,7 @@ While software timer, **programmed for 2s, is activated after more than 10.000s
 ```
 
 Starting ISR_Timers_Array_Simple on RASPBERRY_PI_PICO
-RPi_Pico_TimerInterrupt v1.2.0
+RPi_Pico_TimerInterrupt v1.3.0
 CPU Frequency = 125 MHz
 [TISR] _timerNo = 1, Clock (Hz) = 1000000.00, _fre (Hz) = 1000.00
 [TISR] _count = 0-1000
@@ -630,7 +489,7 @@ The following is the sample terminal output when running example [TimerInterrupt
 
 ```
 Starting TimerInterruptTest on RASPBERRY_PI_PICO
-RPi_Pico_TimerInterrupt v1.2.0
+RPi_Pico_TimerInterrupt v1.3.0
 CPU Frequency = 125 MHz
 [TISR] _timerNo = 0, Clock (Hz) = 1000000.00, _fre (Hz) = 1.00
 [TISR] _count = 0-1000000
@@ -674,7 +533,7 @@ The following is the sample terminal output when running example [Change_Interva
 
 ```
 Starting Change_Interval on RASPBERRY_PI_PICO
-RPi_Pico_TimerInterrupt v1.2.0
+RPi_Pico_TimerInterrupt v1.3.0
 CPU Frequency = 125 MHz
 [TISR] _timerNo = 0, Clock (Hz) = 1000000.00, _fre (Hz) = 0.50
 [TISR] _count = 0-2000000
@@ -755,7 +614,7 @@ The following is the sample terminal output when running example [SwitchDebounce
 
 ```
 Starting SwitchDebounce on RASPBERRY_PI_PICO
-RPi_Pico_TimerInterrupt v1.2.0
+RPi_Pico_TimerInterrupt v1.3.0
 CPU Frequency = 125 MHz
 [TISR] _timerNo = 1, Clock (Hz) = 1000000.00, _fre (Hz) = 50.00
 [TISR] _count = 0-20000
@@ -780,7 +639,7 @@ The following is the sample terminal output when running example [ISR_Timers_Arr
 
 ```
 Starting ISR_Timers_Array_Simple on RASPBERRY_PI_PICO
-RPi_Pico_TimerInterrupt v1.2.0
+RPi_Pico_TimerInterrupt v1.3.0
 CPU Frequency = 125 MHz
 [TISR] _timerNo = 1, Clock (Hz) = 1000000.00, _fre (Hz) = 1000.00
 [TISR] _count = 0-1000
@@ -803,7 +662,7 @@ The following is the sample terminal output when running example [ISR_16_Timers_
 
 ```
 Starting ISR_16_Timers_Array_Complex on RASPBERRY_PI_PICO
-RPi_Pico_TimerInterrupt v1.2.0
+RPi_Pico_TimerInterrupt v1.3.0
 CPU Frequency = 125 MHz
 [TISR] _timerNo = 1, Clock (Hz) = 1000000.00, _fre (Hz) = 100.00
 [TISR] _count = 0-10000
@@ -999,7 +858,7 @@ Submit issues to: [RPI_PICO_TimerInterrupt issues](https://github.com/khoih-prog
 6. Add support to new boards (**ADAFRUIT_ITSYBITSY_RP2040, ADAFRUIT_QTPY_RP2040, ADAFRUIT_STEMMAFRIEND_RP2040, ADAFRUIT_TRINKEYQT_RP2040, ADAFRUIT_MACROPAD_RP2040, SPARKFUN_PROMICRO_RP2040, Nano_RP2040_Connect, etc.**) using the arduino-pico core
 7. Fix `multiple-definitions` linker error
 8. Optimize library code by using `reference-passing` instead of `value-passing`
-
+9. Fix severe bug affecting time between the starts. Check [Enable fixed timing between timer calls (vs fixed time btw. end of timer call and next call as implemented) #3](https://github.com/khoih-prog/RPI_PICO_TimerInterrupt/issues/3)
 
 ---
 ---
@@ -1008,6 +867,14 @@ Submit issues to: [RPI_PICO_TimerInterrupt issues](https://github.com/khoih-prog
 
 Many thanks for everyone for bug reporting, new feature suggesting, testing and contributing to the development of this library.
 
+1. [AndreasOKircher](https://github.com/AndreasOKircher) to report issue [Enable fixed timing between timer calls (vs fixed time btw. end of timer call and next call as implemented) #3](https://github.com/khoih-prog/RPI_PICO_TimerInterrupt/issues/3) leading to version v1.3.0 to fix `severe bug` affecting time between the starts
+
+<table>
+  <tr>
+    <td align="center"><a href="https://github.com/AndreasOKircher"><img src="https://github.com/AndreasOKircher.png" width="100px;" alt="AndreasOKircher"/><br /><sub><b>AndreasOKircher</b></sub></a><br /></td>
+  </tr> 
+</table>
+
 
 ---
 
@@ -1024,7 +891,7 @@ If you want to contribute to this project:
 
 ### License
 
-- The library is licensed under [MIT](https://github.com/khoih-prog/RPI_PICO_TimerInterrupt/blob/master/LICENSE)
+- The library is licensed under [MIT](https://github.com/khoih-prog/RPI_PICO_TimerInterrupt/blob/main/LICENSE)
 
 ---
 

changelog.md

@@ -12,6 +12,7 @@
 ## Table of Contents
 
 * [Changelog](#changelog)
+  * [Releases v1.3.0](#releases-v130)
   * [Releases v1.2.0](#releases-v120)
   * [Releases v1.1.1](#releases-v111)
   * [Releases v1.1.0](#releases-v110)
@@ -24,6 +25,11 @@
 
 ## Changelog
 
+### Releases v1.3.0
+
+1. Fix severe bug affecting time between the starts. Check [Enable fixed timing between timer calls (vs fixed time btw. end of timer call and next call as implemented) #3](https://github.com/khoih-prog/RPI_PICO_TimerInterrupt/issues/3)
+
+
 ### Releases v1.2.0
 
 1. Fix `multiple-definitions` linker error. Drop `src_cpp` and `src_h` directories

examples/Argument_None/Argument_None.ino

@@ -43,7 +43,7 @@
 #include "RPi_Pico_TimerInterrupt.h"
 
 #ifndef LED_BUILTIN
-  #define LED_BUILTIN       25        // Pin LED_BUILTIN mapped to pin GPIO25 of RPI_PICO, control on-board LED
+  #define LED_BUILTIN       25
 #endif
 
 #define PIN_D1              1         // Pin D1 mapped to pin GPIO1 of RPI_PICO

examples/Change_Interval/Change_Interval.ino

@@ -42,7 +42,7 @@
 #include "RPi_Pico_TimerInterrupt.h"
 
 #ifndef LED_BUILTIN
-  #define LED_BUILTIN       25         // Pin D2 mapped to pin GPIO2/ADC12 of ESP32, control on-board LED
+  #define LED_BUILTIN       25
 #endif
 
 #define PIN_D1              1         // Pin D1 mapped to pin GPIO1 of RPI_PICO

examples/TimerInterruptTest/TimerInterruptTest.ino

@@ -41,7 +41,7 @@
 #include "RPi_Pico_TimerInterrupt.h"
 
 #ifndef LED_BUILTIN
-  #define LED_BUILTIN       25        // Pin D2 mapped to pin GPIO2/ADC12 of ESP32, control on-board LED
+  #define LED_BUILTIN       25
 #endif
 
 #define PIN_D1              1         // Pin D1 mapped to pin GPIO1 of RPI_PICO

library.json

@@ -1,7 +1,7 @@
 {
   "name": "RPI_PICO_TimerInterrupt",
-  "version": "1.2.0",
-  "keywords": "timing, device, control, timer, interrupt, hardware, isr, isr-based, hardware-timer, mission-critical, accuracy, precise, non-blocking, raspberry-pico, rpi-pico, pico, rp2040, arduino-pico",
+  "version": "1.3.0",
+  "keywords": "timing, device, control, timer, interrupt, hardware, isr, isr-based, hardware-timer, mission-critical, accuracy, non-blocking, raspberry-pico, rpi-pico, pico, rp2040, arduino-pico, rp2040w, raspberry-pico-w, pico-w",
   "description": "This library enables you to use Interrupt from Hardware Timers on RP2040-based boards such as RASPBERRY_PI_PICO. 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. These hardware timers, using interrupt, still work even if other functions are blocking. Moreover, they are much more precise (certainly depending on clock frequency accuracy) than other software timers using millis() or micros(). That's necessary if you need to measure some data requiring better accuracy.",
   "authors":
   {

library.properties

@@ -1,5 +1,5 @@
 name=RPI_PICO_TimerInterrupt
-version=1.2.0
+version=1.3.0
 author=Khoi Hoang <khoih.prog@gmail.com>
 maintainer=Khoi Hoang <khoih.prog@gmail.com>
 sentence=This library enables you to use Interrupt from Hardware Timers on RP2040-based boards such as RASPBERRY_PI_PICO