v1.4.1 to add support to Seeeduino nRF52

### Releases v1.4.1

1. Add support to Seeeduino nRF52840-based boards such as **SEEED_XIAO_NRF52840 and SEEED_XIAO_NRF52840_SENSE**, etc. using Seeeduino `mbed` core
2. Add astyle using `allman` style. Restyle the library
3. Update all examples

CONTRIBUTING.md

@@ -15,7 +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
-* Arduino `mbed` Core Version (e.g. Arduino `mbed` core v1.3.2 or Arduino `mbed_nano` core v2.6.1 )
+* `nRF52840 mbed` Core Version (e.g. Arduino mbed_nano core v3.4.1, Seeeduino mbed core v2.7.2)
+* `nRF52840-based Nano_33_BLE` Board type (e.g. Nano_33_BLE, Nano_33_BLE_Sense, SEEED_XIAO_NRF52840 and SEEED_XIAO_NRF52840_SENSE, 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:
@@ -27,12 +28,13 @@ Please ensure to specify the following:
 
 ```
 Arduino IDE version: 1.8.19
-Arduino mbed_nano` core v2.6.1
+Arduino mbed_nano core v3.4.1
+Nano_33_BLE board
 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 5.15.0-52-generic #58~20.04.1-Ubuntu SMP Thu Oct 13 13:09:46 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux
 
 Context:
-I encountered a crash while trying to use the Timer Interrupt.
+I encountered a crash while using this library
 
 Steps to reproduce:
 1. ...
@@ -41,12 +43,32 @@ Steps to reproduce:
 4. ...
 ```
 
+---
+
 ### Sending Feature Requests
 
 Feel free to post feature requests. It's helpful if you can explain exactly why the feature would be useful.
 
 There are usually some outstanding feature requests in the [existing issues list](https://github.com/khoih-prog/NRF52_MBED_TimerInterrupt/issues?q=is%3Aopen+is%3Aissue+label%3Aenhancement), feel free to add comments to them.
 
+---
+
 ### Sending Pull Requests
 
 Pull Requests with changes and fixes are also welcome!
+
+Please use the `astyle` to reformat the updated library code as follows (demo for Ubuntu Linux)
+
+1. Change directory to the library GitHub
+
+```
+xy@xy-Inspiron-3593:~$ cd Arduino/xy/NRF52_MBED_TimerInterrupt_GitHub/
+xy@xy-Inspiron-3593:~/Arduino/xy/NRF52_MBED_TimerInterrupt_GitHub$
+```
+
+2. Issue astyle command
+
+```
+xy@xy-Inspiron-3593:~/Arduino/xy/NRF52_MBED_TimerInterrupt_GitHub$ bash utils/restyle.sh
+```
+

changelog.md

@@ -12,6 +12,7 @@
 ## Table of Contents
 
 * [Changelog](#changelog)
+  * [Releases v1.4.1](#releases-v141)
   * [Releases v1.4.0](#releases-v140)
   * [Releases v1.3.0](#releases-v130)
   * [Releases v1.2.1](#releases-v121)
@@ -25,6 +26,12 @@
 
 ## Changelog
 
+### Releases v1.4.1
+
+1. Add support to Seeeduino nRF52840-based boards such as **SEEED_XIAO_NRF52840 and SEEED_XIAO_NRF52840_SENSE**, etc. using Seeeduino `mbed` core
+2. Add astyle using `allman` style. Restyle the library
+3. Update all examples
+
 ### Releases v1.4.0
 
 1. Fix `multiple-definitions` linker error. Drop `src_cpp` and `src_h` directories

examples/Argument_None/Argument_None.ino

@@ -44,11 +44,19 @@
 //#endif
 
 #ifndef LED_BLUE_PIN
-  #define LED_BLUE_PIN          D7
+  #if defined(LEDB)
+    #define LED_BLUE_PIN          LEDB
+  #else
+    #define LED_BLUE_PIN          D7
+  #endif
 #endif
 
 #ifndef LED_RED_PIN
-  #define LED_RED_PIN           D8
+  #if defined(LEDR)
+    #define LED_RED_PIN           LEDR
+  #else
+    #define LED_RED_PIN           D8
+  #endif
 #endif
 
 #define TIMER0_INTERVAL_MS        500   //1000
@@ -73,9 +81,12 @@ NRF52_MBED_Timer ITimer1(NRF_TIMER_3);
 
 void printResult(uint32_t currTime)
 {
-  Serial.print(F("Time = ")); Serial.print(currTime); 
-  Serial.print(F(", Timer0Count = ")); Serial.print(Timer0Count);
-  Serial.print(F(", Timer1Count = ")); Serial.println(Timer1Count);
+  Serial.print(F("Time = "));
+  Serial.print(currTime);
+  Serial.print(F(", Timer0Count = "));
+  Serial.print(Timer0Count);
+  Serial.print(F(", Timer1Count = "));
+  Serial.println(Timer1Count);
 }
 
 void TimerHandler0()
@@ -96,7 +107,7 @@ void TimerHandler1()
 
   // Flag for checking to be sure ISR is working as Serial.print is not OK here in ISR
   Timer1Count++;
-  
+
   //timer interrupt toggles outputPin
   digitalWrite(LED_BLUE_PIN, toggle1);
   toggle1 = !toggle1;
@@ -106,27 +117,31 @@ void setup()
 {
   pinMode(LED_BUILTIN, OUTPUT);
   pinMode(LED_BLUE_PIN, OUTPUT);
-  
+
   Serial.begin(115200);
-  while (!Serial);
+
+  while (!Serial && millis() < 5000);
 
   delay(100);
 
-  Serial.print(F("\nStarting Argument_None on ")); Serial.println(BOARD_NAME);
+  Serial.print(F("\nStarting Argument_None on "));
+  Serial.println(BOARD_NAME);
   Serial.println(NRF52_MBED_TIMER_INTERRUPT_VERSION);
- 
+
   // Interval in microsecs
   if (ITimer0.attachInterruptInterval(TIMER0_INTERVAL_MS * 1000, TimerHandler0))
   {
-    Serial.print(F("Starting ITimer0 OK, millis() = ")); Serial.println(millis());
+    Serial.print(F("Starting ITimer0 OK, millis() = "));
+    Serial.println(millis());
   }
   else
     Serial.println(F("Can't set ITimer0. Select another freq. or timer"));
 
   // Interval in microsecs
   if (ITimer1.attachInterruptInterval(TIMER1_INTERVAL_MS * 1000, TimerHandler1))
   {
-    Serial.print(F("Starting  ITimer1 OK, millis() = ")); Serial.println(millis());
+    Serial.print(F("Starting  ITimer1 OK, millis() = "));
+    Serial.println(millis());
   }
   else
     Serial.println(F("Can't set ITimer1. Select another freq. or timer"));

examples/Change_Interval/Change_Interval.ino

@@ -26,7 +26,7 @@
 */
 
 #if !( ARDUINO_ARCH_NRF52840 && TARGET_NAME == ARDUINO_NANO33BLE )
-#error This code is designed to run on nRF52-based Nano-33-BLE boards using mbed-RTOS platform! Please check your Tools->Board setting.
+  #error This code is designed to run on nRF52-based Nano-33-BLE boards using mbed-RTOS platform! Please check your Tools->Board setting.
 #endif
 
 // These define's must be placed at the beginning before #include "NRF52TimerInterrupt.h"
@@ -44,11 +44,19 @@
 //#endif
 
 #ifndef LED_BLUE_PIN
-#define LED_BLUE_PIN          D7
+  #if defined(LEDB)
+    #define LED_BLUE_PIN          LEDB
+  #else
+    #define LED_BLUE_PIN          D7
+  #endif
 #endif
 
 #ifndef LED_RED_PIN
-#define LED_RED_PIN           D8
+  #if defined(LEDR)
+    #define LED_RED_PIN           LEDR
+  #else
+    #define LED_RED_PIN           D8
+  #endif
 #endif
 
 #define TIMER0_INTERVAL_MS        500   //1000
@@ -73,9 +81,12 @@ NRF52_MBED_Timer ITimer1(NRF_TIMER_3);
 
 void printResult(uint32_t currTime)
 {
-  Serial.print(F("Time = ")); Serial.print(currTime); 
-  Serial.print(F(", Timer0Count = ")); Serial.print(Timer0Count);
-  Serial.print(F(", Timer1Count = ")); Serial.println(Timer1Count);
+  Serial.print(F("Time = "));
+  Serial.print(currTime);
+  Serial.print(F(", Timer0Count = "));
+  Serial.print(Timer0Count);
+  Serial.print(F(", Timer1Count = "));
+  Serial.println(Timer1Count);
 }
 
 void TimerHandler0()
@@ -108,25 +119,29 @@ void setup()
   pinMode(LED_BLUE_PIN, OUTPUT);
 
   Serial.begin(115200);
-  while (!Serial);
+
+  while (!Serial && millis() < 5000);
 
   delay(100);
 
-  Serial.print(F("\nStarting Change_Interval on ")); Serial.println(BOARD_NAME);
+  Serial.print(F("\nStarting Change_Interval on "));
+  Serial.println(BOARD_NAME);
   Serial.println(NRF52_MBED_TIMER_INTERRUPT_VERSION);
 
   // Interval in microsecs
   if (ITimer0.attachInterruptInterval(TIMER0_INTERVAL_MS * 1000, TimerHandler0))
   {
-    Serial.print(F("Starting ITimer0 OK, millis() = ")); Serial.println(millis());
+    Serial.print(F("Starting ITimer0 OK, millis() = "));
+    Serial.println(millis());
   }
   else
     Serial.println(F("Can't set ITimer0. Select another freq. or timer"));
 
   // Interval in microsecs
   if (ITimer1.attachInterruptInterval(TIMER1_INTERVAL_MS * 1000, TimerHandler1))
   {
-    Serial.print(F("Starting ITimer1 OK, millis() = ")); Serial.println(millis());
+    Serial.print(F("Starting ITimer1 OK, millis() = "));
+    Serial.println(millis());
   }
   else
     Serial.println(F("Can't set ITimer1. Select another freq. or timer"));
@@ -157,9 +172,11 @@ void loop()
       ITimer0.setInterval(TIMER0_INTERVAL_MS * 1000 * (multFactor + 1), TimerHandler0);
       ITimer1.setInterval(TIMER1_INTERVAL_MS * 1000 * (multFactor + 1), TimerHandler1);
 
-      Serial.print(F("Changing Interval, Timer0 = ")); Serial.print(TIMER0_INTERVAL_MS * (multFactor + 1));
-      Serial.print(F(",  Timer1 = ")); Serial.println(TIMER1_INTERVAL_MS * (multFactor + 1)); 
-
+      Serial.print(F("Changing Interval, Timer0 = "));
+      Serial.print(TIMER0_INTERVAL_MS * (multFactor + 1));
+      Serial.print(F(",  Timer1 = "));
+      Serial.println(TIMER1_INTERVAL_MS * (multFactor + 1));
+
       lastChangeTime = currTime;
     }
   }