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v1.5.0 to improve frequency precision
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### Releases v1.5.0

1. Improve frequency precision by using float instead of ulong, Check PR [change variable period from unsigned long to float khoih-prog#7](khoih-prog#7)
2. Remove compiler warnings
3. Update `Packages' Patches`
4. Add `strict` option for PIO `lib_compat_mode`
5. Split `changelog.log` from `README.md`
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khoih-prog authored Oct 8, 2021
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8 changes: 4 additions & 4 deletions CONTRIBUTING.md
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Expand Up @@ -14,8 +14,8 @@ 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. 1.8.15) or Platform.io version
* `SAMD` Core Version (e.g. Arduino SAMD core v1.8.11, Adafruit SAMD core v1.7.2, Seeed Studio SAMD v1.8.1, Sparkfun SAMD v1.8.1)
* Arduino IDE version (e.g. 1.8.16) or Platform.io version
* `SAMD` Core Version (e.g. Arduino SAMD core v1.8.11, Adafruit SAMD core v1.7.5, Seeed Studio SAMD v1.8.2, Sparkfun SAMD v1.8.1)
* 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:
Expand All @@ -26,10 +26,10 @@ Please ensure to specify the following:
### Example

```
Arduino IDE version: 1.8.15
Arduino IDE version: 1.8.16
Arduino SAMD Core Version 1.8.11
OS: Ubuntu 20.04 LTS
Linux xy-Inspiron-3593 5.4.0-73-generic #82-Ubuntu SMP Wed Apr 14 17:39:42 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
Linux xy-Inspiron-3593 5.4.0-86-generic #97-Ubuntu SMP Fri Sep 17 19:19:40 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
Context:
I encountered a crash while trying to use the Timer Interrupt.
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101 changes: 33 additions & 68 deletions README.md
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Expand Up @@ -2,7 +2,7 @@

[![arduino-library-badge](https://www.ardu-badge.com/badge/SAMD_TimerInterrupt.svg?)](https://www.ardu-badge.com/SAMD_TimerInterrupt)
[![GitHub release](https://img.shields.io/github/release/khoih-prog/SAMD_TimerInterrupt.svg)](https://github.com/khoih-prog/SAMD_TimerInterrupt/releases)
[![GitHub](https://img.shields.io/github/license/mashape/apistatus.svg)](https://github.com/khoih-prog/SAMD_TimerInterrupt/blob/master/LICENSE)
[![GitHub](https://img.shields.io/github/license/mashape/apistatus.svg)](https://github.com/khoih-prog/SAMD_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/SAMD_TimerInterrupt.svg)](http://github.com/khoih-prog/SAMD_TimerInterrupt/issues)

Expand All @@ -16,14 +16,7 @@
* [Why using ISR-based Hardware Timer Interrupt is better](#why-using-isr-based-hardware-timer-interrupt-is-better)
* [Currently supported Boards](#currently-supported-boards)
* [Important Notes about ISR](#important-notes-about-isr)
* [Changelog](#changelog)
* [Releases v1.4.0](#releases-v140)
* [Releases v1.3.1](#releases-v131)
* [Releases v1.3.0](#releases-v130)
* [Releases v1.2.0](#releases-v120)
* [Releases v1.1.1](#releases-v111)
* [Releases v1.0.1](#releases-v101)
* [Releases v1.0.0](#releases-v100)
* [Changelog](changelog.md)
* [Prerequisites](#prerequisites)
* [Installation](#installation)
* [Use Arduino Library Manager](#use-arduino-library-manager)
Expand Down Expand Up @@ -76,7 +69,6 @@
* [6. RepeatedAttachInterrupt_uS on SAMD21 SEEED_XIAO_M0](#6-repeatedattachinterrupt_us-on-samd21-seeed_xiao_m0)
* [Debug](#debug)
* [Troubleshooting](#troubleshooting)
* [Releases](#releases)
* [Issues](#issues)
* [TO DO](#to-do)
* [DONE](#done)
Expand Down Expand Up @@ -149,53 +141,13 @@ The catch is **your function is now part of an ISR (Interrupt Service Routine),
---
---

## Changelog

### Releases v1.4.0

1. Fix SAMD21 rare bug caused by not fully init Prescaler. Check [**Bug when going from a >20000us period to a <20000us period. The timer period become 4 times greater.** #3](https://github.com/khoih-prog/SAMD_TimerInterrupt/issues/3)


### Releases v1.3.1

1. Fix compile error to some SAMD21-based boards, such as ADAFRUIT_FEATHER_M0, ARDUINO_SAMD_FEATHER_M0, ADAFRUIT_METRO_M0_EXPRESS, ARDUINO_SAMD_HALLOWING_M0 and ADAFRUIT_BLM_BADGE. Check [Doesn't compile with Adafruit Feather M0 #2](https://github.com/khoih-prog/SAMD_TimerInterrupt/issues/2).


### Releases v1.3.0

1. Add support to **Sparkfun SAMD21 boards** such as **SparkFun_RedBoard_Turbo, SparkFun_Qwiic_Micro, etc.**
2. Add support to **Sparkfun SAMD51 boards** such as **SparkFun_SAMD51_Thing_Plus, SparkFun_SAMD51_MicroMod, etc.**
3. Update examples to support Sparkfun boards.

### Releases v1.2.0

1. Add better debug feature.
2. Optimize code and examples to reduce RAM usage
3. Add Table of Contents

### Releases v1.1.1

1. Add example [**Change_Interval**](examples/Change_Interval) and [**ISR_16_Timers_Array_Complex**](examples/ISR_16_Timers_Array_Complex)
2. Bump up version to sync with other TimerInterrupt Libraries. Modify Version String.

### Releases v1.0.1

1. Add complicated example [ISR_16_Timers_Array](examples/ISR_16_Timers_Array) utilizing and demonstrating the full usage of 16 independent ISR Timers.

### Releases v1.0.0

1. Permit up to 16 super-long-time, super-accurate ISR-based timers to avoid being blocked
2. Using cpp code besides Impl.h code to use if Multiple-Definition linker error.

---
---

## Prerequisites

1. [`Arduino IDE 1.8.15+` for Arduino](https://www.arduino.cc/en/Main/Software)
1. [`Arduino IDE 1.8.16+` for Arduino](https://www.arduino.cc/en/Main/Software)
2. [`Arduino SAMD core 1.8.11+`](https://github.com/arduino/ArduinoCore-samd) for SAMD ARM Cortex-M0+ boards. [![GitHub release](https://img.shields.io/github/release/arduino/ArduinoCore-samd.svg)](https://github.com/arduino/ArduinoCore-samd/releases/latest)
3. [`Adafruit SAMD core 1.7.2+`](https://github.com/adafruit/ArduinoCore-samd) for SAMD ARM Cortex-M0+ and M4 boards (Nano 33 IoT, etc.). [![GitHub release](https://img.shields.io/github/release/adafruit/ArduinoCore-samd.svg)](https://github.com/adafruit/ArduinoCore-samd/releases/latest)
4. [`Seeeduino SAMD core 1.8.1+`](https://github.com/Seeed-Studio/ArduinoCore-samd) for SAMD21/SAMD51 boards (XIAO M0, Wio Terminal, etc.). [![Latest release](https://img.shields.io/github/release/Seeed-Studio/ArduinoCore-samd.svg)](https://github.com/Seeed-Studio/ArduinoCore-samd/releases/latest/)
3. [`Adafruit SAMD core 1.7.5+`](https://github.com/adafruit/ArduinoCore-samd) for SAMD ARM Cortex-M0+ and M4 boards (Nano 33 IoT, etc.). [![GitHub release](https://img.shields.io/github/release/adafruit/ArduinoCore-samd.svg)](https://github.com/adafruit/ArduinoCore-samd/releases/latest)
4. [`Seeeduino SAMD core 1.8.2+`](https://github.com/Seeed-Studio/ArduinoCore-samd) for SAMD21/SAMD51 boards (XIAO M0, Wio Terminal, etc.). [![Latest release](https://img.shields.io/github/release/Seeed-Studio/ArduinoCore-samd.svg)](https://github.com/Seeed-Studio/ArduinoCore-samd/releases/latest/)
5. [`Sparkfun SAMD core 1.8.1+`](https://github.com/sparkfun/Arduino_Boards) for SAMD21/SAMD51 boards (SparkFun_RedBoard_Turbo, SparkFun_SAMD51_Thing_Plus, etc.).
6. [`Blynk library 0.6.1`](https://github.com/blynkkk/blynk-library/releases). [![Latest release](https://img.shields.io/github/release/blynkkk/blynk-library.svg)](https://github.com/blynkkk/blynk-library/releases/latest/) to use with some examples. Don't use Blynk beta versions.
7. To use with some examples, depending on which Ethernet card you're using:
Expand Down Expand Up @@ -240,7 +192,7 @@ Another way to install is to:

#### 1. For Arduino SAMD boards

***To be able to compile without error and automatically detect and display BOARD_NAME on Arduino SAMD (Nano-33-IoT, etc) boards***, you have to copy the whole [Arduino SAMD cores 1.8.11](Packages_Patches/arduino/hardware/samd/1.8.11) directory into Arduino SAMD directory (~/.arduino15/packages/arduino/hardware/samd/1.8.11).
***To be able to compile, run and automatically detect and display BOARD_NAME on Arduino SAMD (Nano-33-IoT, etc) boards***, you have to copy the whole [Arduino SAMD Packages_Patches](Packages_Patches/arduino/hardware/samd/1.8.11) directory into Arduino SAMD directory (~/.arduino15/packages/arduino/hardware/samd/1.8.11).

#### For core version v1.8.10+

Expand Down Expand Up @@ -279,29 +231,39 @@ Whenever the above-mentioned compiler error issue is fixed with the new Arduino

#### 2. For Adafruit SAMD boards

***To be able to automatically detect and display BOARD_NAME on Adafruit SAMD (Itsy-Bitsy M4, etc) boards***, you have to copy the file [Adafruit SAMD platform.txt](Packages_Patches/adafruit/hardware/samd/1.7.2) into Adafruit samd directory (~/.arduino15/packages/adafruit/hardware/samd/1.7.2).
***To be able to compile, run and automatically detect and display BOARD_NAME on Adafruit SAMD (Itsy-Bitsy M4, etc) boards***, you have to copy the whole [Adafruit SAMD Packages_Patches](Packages_Patches/adafruit/hardware/samd/1.7.5) directory into Adafruit samd directory (~/.arduino15/packages/adafruit/hardware/samd/1.7.5).

Supposing the Adafruit SAMD core version is 1.7.2. This file must be copied into the directory:
Supposing the Adafruit SAMD core version is 1.7.5. This file must be copied into the directory:

- `~/.arduino15/packages/adafruit/hardware/samd/1.7.2/platform.txt`
- `~/.arduino15/packages/adafruit/hardware/samd/1.7.5/platform.txt`
- `~/.arduino15/packages/adafruit/hardware/samd/1.7.5/cores/arduino/Print.h`
- `~/.arduino15/packages/adafruit/hardware/samd/1.7.5/cores/arduino/Print.cpp`

Whenever a new version is installed, remember to copy this file into the new version directory. For example, new version is x.yy.zz
This file must be copied into the directory:

- `~/.arduino15/packages/adafruit/hardware/samd/x.yy.zz/platform.txt`
- `~/.arduino15/packages/adafruit/hardware/samd/x.yy.zz/cores/arduino/Print.h`
- `~/.arduino15/packages/adafruit/hardware/samd/x.yy.zz/cores/arduino/Print.cpp`

#### 3. For Seeeduino SAMD boards

***To be able to automatically detect and display BOARD_NAME on Seeeduino SAMD (XIAO M0, Wio Terminal, etc) boards***, you have to copy the file [Seeeduino SAMD platform.txt](Packages_Patches/Seeeduino/hardware/samd/1.8.1) into Adafruit samd directory (~/.arduino15/packages/Seeeduino/hardware/samd/1.8.1).
***To be able to compile, run and automatically detect and display BOARD_NAME on Seeeduino SAMD (XIAO M0, Wio Terminal, etc) boards***, you have to copy the whole [Seeeduino SAMD Packages_Patches](Packages_Patches/Seeeduino/hardware/samd/1.8.2) directory into Seeeduino samd directory (~/.arduino15/packages/Seeeduino/hardware/samd/1.8.2).

Supposing the Seeeduino SAMD core version is 1.8.1. This file must be copied into the directory:
Supposing the Seeeduino SAMD core version is 1.8.2. This file must be copied into the directory:

- `~/.arduino15/packages/Seeeduino/hardware/samd/1.8.1/platform.txt`
- `~/.arduino15/packages/Seeeduino/hardware/samd/1.8.2/platform.txt`
- `~/.arduino15/packages/Seeeduino/hardware/samd/1.8.2/cores/arduino/Arduino.h`
- `~/.arduino15/packages/Seeeduino/hardware/samd/1.8.2/cores/arduino/Print.h`
- `~/.arduino15/packages/Seeeduino/hardware/samd/1.8.2/cores/arduino/Print.cpp`

Whenever a new version is installed, remember to copy this file into the new version directory. For example, new version is x.yy.zz
This file must be copied into the directory:

- `~/.arduino15/packages/Seeeduino/hardware/samd/x.yy.zz/platform.txt`
- `~/.arduino15/packages/Seeeduino/hardware/samd/x.yy.zz/cores/arduino/Arduino.h`
- `~/.arduino15/packages/Seeeduino/hardware/samd/x.yy.zz/cores/arduino/Print.h`
- `~/.arduino15/packages/Seeeduino/hardware/samd/x.yy.zz/cores/arduino/Print.cpp`

---
---
Expand Down Expand Up @@ -829,7 +791,7 @@ While software timer, **programmed for 2s, is activated after 7.937s !!!**. Then

```
Starting ISR_Timer_Complex_WiFiNINA on SAMD_NANO_33_IOT
SAMDTimerInterrupt v1.4.0
SAMDTimerInterrupt v1.5.0
CPU Frequency = 48 MHz
[TISR] SAMDTimerInterrupt: F_CPU (MHz) = 48 , TIMER_HZ = 48
[TISR] TC_Timer::startTimer _Timer = 0x 42002c00 , TC3 = 0x 42002c00
Expand Down Expand Up @@ -894,7 +856,7 @@ The following is the sample terminal output when running example [**TimerInterru

```
Starting TimerInterruptTest on ITSYBITSY_M4
SAMDTimerInterrupt v1.4.0
SAMDTimerInterrupt v1.5.0
CPU Frequency = 48 MHz
[TISR] SAMDTimerInterrupt: F_CPU (MHz) = 120 , TIMER_HZ = 48
[TISR] TC_Timer::startTimer _Timer = 0x 0x4101c000 , TC3 = 0x 0x4101c000
Expand Down Expand Up @@ -972,7 +934,7 @@ The following is the sample terminal output when running example [**Argument_Non

```
Starting Argument_None on SAMD_NANO_33_IOT
SAMDTimerInterrupt v1.4.0
SAMDTimerInterrupt v1.5.0
CPU Frequency = 48 MHz
[TISR] SAMDTimerInterrupt: F_CPU (MHz) = 48 , TIMER_HZ = 48
[TISR] TC_Timer::startTimer _Timer = 0x 42002c00 , TC3 = 0x 42002c00
Expand Down Expand Up @@ -1022,7 +984,7 @@ In this example, 16 independent ISR Timers are used, yet utilized just one Hardw

```
Starting ISR_16_Timers_Array on SAMD_NANO_33_IOT
SAMDTimerInterrupt v1.4.0
SAMDTimerInterrupt v1.5.0
CPU Frequency = 48 MHz
CPU Frequency = 48 MHz
[TISR] SAMDTimerInterrupt: F_CPU (MHz) = 48 , TIMER_HZ = 48
Expand Down Expand Up @@ -1147,7 +1109,7 @@ The following is the sample terminal output when running example [Change_Interva

```
Starting Change_Interval on SAMD_NANO_33_IOT
SAMDTimerInterrupt v1.4.0
SAMDTimerInterrupt v1.5.0
CPU Frequency = 48 MHz
[TISR] SAMDTimerInterrupt: F_CPU (MHz) = 48 , TIMER_HZ = 48
[TISR] TC_Timer::startTimer _Timer = 0x 42002c00 , TC3 = 0x 42002c00
Expand Down Expand Up @@ -1211,7 +1173,7 @@ The following is the sample terminal output when running example [RepeatedAttach

```
Starting RepeatedAttachInterrupt_uS on SEEED_XIAO_M0
SAMDTimerInterrupt v1.4.0
SAMDTimerInterrupt v1.5.0
CPU Frequency = 48 MHz
[TISR] _period = 19995 , frequency = 50.01
[TISR] SAMDTimerInterrupt: F_CPU (MHz) = 48 , TIMER_HZ = 48
Expand Down Expand Up @@ -1376,14 +1338,17 @@ Many thanks for everyone for bug reporting, new feature suggesting, testing and
1. Use some code from the [**Tamasa's ZeroTimer Library**](https://github.com/EHbtj/ZeroTimer).
2. Use some code from the [**Dennis van Gils' SAMD51_InterruptTimer Library**](https://github.com/Dennis-van-Gils/SAMD51_InterruptTimer).
3. Thanks to [generationmake](https://github.com/generationmake) to report the issue [Doesn't compile with Adafruit Feather M0 #2](https://github.com/khoih-prog/SAMD_TimerInterrupt/issues/2) leading to new release v1.3.1.
4. Thanks to [thiagothimotti](https://github.com/) to report the **interesting hard-to-find bug** in [Bug when going from a >20000us period to a <20000us period. The timer period become 4 times greater. #3](https://github.com/khoih-prog/SAMD_TimerInterrupt/issues/3) leading to new release v1.4.0.
4. Thanks to [thiagothimotti](https://github.com/thiagothimotti) to report the **interesting hard-to-find bug** in [Bug when going from a >20000us period to a <20000us period. The timer period become 4 times greater. #3](https://github.com/khoih-prog/SAMD_TimerInterrupt/issues/3) leading to new release v1.4.0.
5. Thanks to [generationmake](https://github.com/generationmake) to make a PR in [change variable period from unsigned long to float #7](https://github.com/khoih-prog/SAMD_TimerInterrupt/pull/7) leading to new release v1.5.0.


<table>
<tr>
<td align="center"><a href="https://github.com/EHbtj"><img src="https://github.com/EHbtj.png" width="100px;" alt="EHbtj"/><br /><sub><b>⭐️ Tamasa</b></sub></a><br /></td>
<td align="center"><a href="https://github.com/Dennis-van-Gils"><img src="https://github.com/Dennis-van-Gils.png" width="100px;" alt="Dennis-van-Gils"/><br /><sub><b> Dennis van Gils</b></sub></a><br /></td>
<td align="center"><a href="https://github.com/generationmake"><img src="https://github.com/generationmake.png" width="100px;" alt="generationmake"/><br /><sub><b>generationmake</b></sub></a><br /></td>
<td align="center"><a href="https://github.com/thiagothimotti"><img src="https://github.com/thiagothimotti.png" width="100px;" alt="thiagothimotti"/><br /><sub><b>thiagothimotti</b></sub></a><br /></td>
<td align="center"><a href="https://github.com/generationmake"><img src="https://github.com/generationmake.png" width="100px;" alt="generationmake"/><br /><sub><b>generationmake</b></sub></a><br /></td>
</tr>
</table>

Expand All @@ -1402,7 +1367,7 @@ If you want to contribute to this project:

### License

- The library is licensed under [MIT](https://github.com/khoih-prog/SAMD_TimerInterrupt/blob/master/LICENSE)
- The library is licensed under [MIT](https://github.com/khoih-prog/SAMD_TimerInterrupt/blob/main/LICENSE)

---

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74 changes: 74 additions & 0 deletions changelog.md
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@@ -0,0 +1,74 @@
# SAMD_TimerInterrupt Library

[![arduino-library-badge](https://www.ardu-badge.com/badge/SAMD_TimerInterrupt.svg?)](https://www.ardu-badge.com/SAMD_TimerInterrupt)
[![GitHub release](https://img.shields.io/github/release/khoih-prog/SAMD_TimerInterrupt.svg)](https://github.com/khoih-prog/SAMD_TimerInterrupt/releases)
[![GitHub](https://img.shields.io/github/license/mashape/apistatus.svg)](https://github.com/khoih-prog/SAMD_TimerInterrupt/blob/master/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/SAMD_TimerInterrupt.svg)](http://github.com/khoih-prog/SAMD_TimerInterrupt/issues)

---
---

## Table of Contents

* [Changelog](#changelog)
* [Releases v1.5.0](#releases-v150)
* [Releases v1.4.0](#releases-v140)
* [Releases v1.3.1](#releases-v131)
* [Releases v1.3.0](#releases-v130)
* [Releases v1.2.0](#releases-v120)
* [Releases v1.1.1](#releases-v111)
* [Releases v1.0.1](#releases-v101)
* [Releases v1.0.0](#releases-v100)


---
---

## Changelog

### Releases v1.5.0

1. Improve frequency precision by using float instead of ulong, Check PR [change variable period from unsigned long to float #7](https://github.com/khoih-prog/SAMD_TimerInterrupt/pull/7)
2. Remove compiler warnings
3. Update `Packages' Patches`
4. Add `strict` option for PIO `lib_compat_mode`
5. Split `changelog.log` from `README.md`

### Releases v1.4.0

1. Fix SAMD21 rare bug caused by not fully init Prescaler. Check [**Bug when going from a >20000us period to a <20000us period. The timer period become 4 times greater.** #3](https://github.com/khoih-prog/SAMD_TimerInterrupt/issues/3)


### Releases v1.3.1

1. Fix compile error to some SAMD21-based boards, such as ADAFRUIT_FEATHER_M0, ARDUINO_SAMD_FEATHER_M0, ADAFRUIT_METRO_M0_EXPRESS, ARDUINO_SAMD_HALLOWING_M0 and ADAFRUIT_BLM_BADGE. Check [Doesn't compile with Adafruit Feather M0 #2](https://github.com/khoih-prog/SAMD_TimerInterrupt/issues/2).


### Releases v1.3.0

1. Add support to **Sparkfun SAMD21 boards** such as **SparkFun_RedBoard_Turbo, SparkFun_Qwiic_Micro, etc.**
2. Add support to **Sparkfun SAMD51 boards** such as **SparkFun_SAMD51_Thing_Plus, SparkFun_SAMD51_MicroMod, etc.**
3. Update examples to support Sparkfun boards.

### Releases v1.2.0

1. Add better debug feature.
2. Optimize code and examples to reduce RAM usage
3. Add Table of Contents

### Releases v1.1.1

1. Add example [**Change_Interval**](examples/Change_Interval) and [**ISR_16_Timers_Array_Complex**](examples/ISR_16_Timers_Array_Complex)
2. Bump up version to sync with other TimerInterrupt Libraries. Modify Version String.

### Releases v1.0.1

1. Add complicated example [ISR_16_Timers_Array](examples/ISR_16_Timers_Array) utilizing and demonstrating the full usage of 16 independent ISR Timers.

### Releases v1.0.0

1. Permit up to 16 super-long-time, super-accurate ISR-based timers to avoid being blocked
2. Using cpp code besides Impl.h code to use if Multiple-Definition linker error.


3 changes: 2 additions & 1 deletion examples/Argument_None/Argument_None.ino
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Expand Up @@ -19,7 +19,7 @@
Based on BlynkTimer.h
Author: Volodymyr Shymanskyy
Version: 1.4.0
Version: 1.5.0
Version Modified By Date Comments
------- ----------- ---------- -----------
Expand All @@ -30,6 +30,7 @@
1.3.0 K.Hoang 02/04/2021 Add support to Sparkfun SAMD21 and SAMD51 boards
1.3.1 K.Hoang 09/05/2021 Fix compile error to some SAMD21-based boards
1.4.0 K.Hoang 02/06/2021 Fix SAMD21 rare bug caused by not fully init Prescaler
1.5.0 K.Hoang 08/10/2021 Improve frequency precision by using float instead of ulong
*****************************************************************************************************************************/

/*
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