v1.2.2 to add support to Seeeduino nRF52

### Releases v1.2.2

1. Add support to Seeeduino nRF52840-based boards such as **Seeed_XIAO_NRF52840 and Seeed_XIAO_NRF52840_SENSE**, etc. using Seeeduino `nRF52` core
2. Add astyle using `allman` style. Restyle the library
3. Update all examples
4. Update `Packages' Patches` to add Seeeduino `nRF52` core

Author: khoih-prog

examples/ISR_16_PWMs_Array/ISR_16_PWMs_Array.ino

@@ -27,7 +27,7 @@
 #define LED_ON              LOW
 
 #ifndef LED_BUILTIN
-	#define LED_BUILTIN       25
+  #define LED_BUILTIN       25
 #endif
 
 #ifndef LED_BLUE_PIN
@@ -63,7 +63,7 @@ NRF52_Slow_PWM ISR_PWM;
 
 void TimerHandler()
 {
-	ISR_PWM.run();
+  ISR_PWM.run();
 }
 
 //////////////////////////////////////////////////////
@@ -93,29 +93,29 @@ void TimerHandler()
 // You can assign pins here. Be carefull to select good pin to use or crash, e.g pin 6-11
 uint32_t PWM_Pin[] =
 {
-	LED_BUILTIN, LED_BLUE_PIN, LED_GREEN_PIN, PIN_D0, PIN_D1,  PIN_D2,  PIN_D3,  PIN_D4,
-	PIN_D5,   PIN_D6,  PIN_D7, PIN_D8, PIN_D9, PIN_D10, PIN_D11, PIN_D12
+  LED_BUILTIN, LED_BLUE_PIN, LED_GREEN_PIN, PIN_D0, PIN_D1,  PIN_D2,  PIN_D3,  PIN_D4,
+  PIN_D5,   PIN_D6,  PIN_D7, PIN_D8, PIN_D9, PIN_D10, PIN_D11, PIN_D12
 };
 
 // You can assign any interval for any timer here, in microseconds
 uint32_t PWM_Period[] =
 {
-	1000000L,   500000L,   333333L,   250000L,   200000L,   166667L,   142857L,   125000L,
-	111111L,   100000L,    66667L,    50000L,    40000L,   33333L,     25000L,    20000L
+  1000000L,   500000L,   333333L,   250000L,   200000L,   166667L,   142857L,   125000L,
+  111111L,   100000L,    66667L,    50000L,    40000L,   33333L,     25000L,    20000L
 };
 
 // You can assign any interval for any timer here, in Hz
 float PWM_Freq[] =
 {
-	1.0f,  2.0f,  3.0f,  4.0f,  5.0f,  6.0f,  7.0f,  8.0f,
-	9.0f, 10.0f, 15.0f, 20.0f, 25.0f, 30.0f, 40.0f, 50.0f
+  1.0f,  2.0f,  3.0f,  4.0f,  5.0f,  6.0f,  7.0f,  8.0f,
+  9.0f, 10.0f, 15.0f, 20.0f, 25.0f, 30.0f, 40.0f, 50.0f
 };
 
 // You can assign any interval for any timer here, in milliseconds
 float PWM_DutyCycle[] =
 {
-	5.0, 10.0, 20.0, 30.0, 40.0, 45.0, 50.0, 55.0,
-	60.0, 65.0, 70.0, 75.0, 80.0, 85.0, 90.0, 95.0
+  5.0, 10.0, 20.0, 30.0, 40.0, 45.0, 50.0, 55.0,
+  60.0, 65.0, 70.0, 75.0, 80.0, 85.0, 90.0, 95.0
 };
 
 typedef void (*irqCallback)  ();
@@ -190,59 +190,60 @@ void doingSomething15()
 
 irqCallback irqCallbackStartFunc[] =
 {
-	doingSomething0,  doingSomething1,  doingSomething2,  doingSomething3,
-	doingSomething4,  doingSomething5,  doingSomething6,  doingSomething7,
-	doingSomething8,  doingSomething9,  doingSomething10, doingSomething11,
-	doingSomething12, doingSomething13, doingSomething14, doingSomething15
+  doingSomething0,  doingSomething1,  doingSomething2,  doingSomething3,
+  doingSomething4,  doingSomething5,  doingSomething6,  doingSomething7,
+  doingSomething8,  doingSomething9,  doingSomething10, doingSomething11,
+  doingSomething12, doingSomething13, doingSomething14, doingSomething15
 };
 
 ////////////////////////////////////////////////
 
 void setup()
 {
-	Serial.begin(115200);
+  Serial.begin(115200);
 
-	while (!Serial && millis() < 5000);
+  while (!Serial && millis() < 5000);
 
-	delay(2000);
+  delay(2000);
 
-	Serial.print(F("\nStarting ISR_16_PWMs_Array on ")); Serial.println(BOARD_NAME);
-	Serial.println(NRF52_SLOW_PWM_VERSION);
+  Serial.print(F("\nStarting ISR_16_PWMs_Array on "));
+  Serial.println(BOARD_NAME);
+  Serial.println(NRF52_SLOW_PWM_VERSION);
 
-	// Interval in microsecs
-	if (ITimer.attachInterruptInterval(HW_TIMER_INTERVAL_US, TimerHandler))
-	{
-		startMicros = micros();
-		Serial.print(F("Starting ITimer OK, micros() = "));
-		Serial.println(startMicros);
-	}
-	else
-		Serial.println(F("Can't set ITimer. Select another freq. or timer"));
+  // Interval in microsecs
+  if (ITimer.attachInterruptInterval(HW_TIMER_INTERVAL_US, TimerHandler))
+  {
+    startMicros = micros();
+    Serial.print(F("Starting ITimer OK, micros() = "));
+    Serial.println(startMicros);
+  }
+  else
+    Serial.println(F("Can't set ITimer. Select another freq. or timer"));
 
 #if 1
 
-	// Just to demonstrate, don't use too many ISR Timers if not absolutely necessary
-	// You can use up to 16 timer for each ISR_PWM
-	for (uint16_t i = 0; i < NUMBER_ISR_PWMS; i++)
-	{
-		//void setPWM(uint32_t pin, float frequency, float dutycycle
-		// , timer_callback_p StartCallback = nullptr, timer_callback_p StopCallback = nullptr)
+  // Just to demonstrate, don't use too many ISR Timers if not absolutely necessary
+  // You can use up to 16 timer for each ISR_PWM
+  for (uint16_t i = 0; i < NUMBER_ISR_PWMS; i++)
+  {
+    //void setPWM(uint32_t pin, float frequency, float dutycycle
+    // , timer_callback_p StartCallback = nullptr, timer_callback_p StopCallback = nullptr)
 
 #if USING_PWM_FREQUENCY
 
-		// You can use this with PWM_Freq in Hz
-		ISR_PWM.setPWM(PWM_Pin[i], PWM_Freq[i], PWM_DutyCycle[i], irqCallbackStartFunc[i]);
+    // You can use this with PWM_Freq in Hz
+    ISR_PWM.setPWM(PWM_Pin[i], PWM_Freq[i], PWM_DutyCycle[i], irqCallbackStartFunc[i]);
 
 #else
 #if USING_MICROS_RESOLUTION
-		// Or using period in microsecs resolution
-		ISR_PWM.setPWM_Period(PWM_Pin[i], PWM_Period[i], PWM_DutyCycle[i], irqCallbackStartFunc[i]);
+    // Or using period in microsecs resolution
+    ISR_PWM.setPWM_Period(PWM_Pin[i], PWM_Period[i], PWM_DutyCycle[i], irqCallbackStartFunc[i]);
 #else
-		// Or using period in millisecs resolution
-		ISR_PWM.setPWM_Period(PWM_Pin[i], PWM_Period[i] / 1000, PWM_DutyCycle[i], irqCallbackStartFunc[i]);
+    // Or using period in millisecs resolution
+    ISR_PWM.setPWM_Period(PWM_Pin[i], PWM_Period[i] / 1000, PWM_DutyCycle[i], irqCallbackStartFunc[i]);
 #endif
 #endif
-	}
+  }
 
 #endif
 }