Add accessors for Control and Status registers; Whitespace changes to…

… appease clang.

src/RTC_DS3231.cpp

@@ -125,7 +125,7 @@ float RTC_DS3231::getTemperature() {
 */
 /**************************************************************************/
 int8_t RTC_DS3231::getAging() {
-	return read_register(DS3231_AGING);
+  return read_register(DS3231_AGING);
 }
 
 /**************************************************************************/
@@ -135,9 +135,51 @@ int8_t RTC_DS3231::getAging() {
 */
 /**************************************************************************/
 void RTC_DS3231::setAging(int8_t val) {
-    write_register(DS3231_AGING, val);
+  write_register(DS3231_AGING, val);
 }
 
+/**************************************************************************/
+/*!
+    @brief  Get the current value of the control register
+    @return Control register bits (unsigned int8)
+*/
+/**************************************************************************/
+uint8_t RTC_DS3231::getControlReg() {
+  return read_register(DS3231_CONTROL);
+}
+
+/**************************************************************************/
+/*!
+    @brief  Write new values to all bits of the control register
+    @param  val New value for the 8 bit control register.
+*/
+/**************************************************************************/
+void RTC_DS3231::setControlReg(uint8_t val) {
+  write_register(DS3231_CONTROL, val);
+}
+
+/**************************************************************************/
+/*!
+    @brief  Get the current value of the status register
+    @return Status register bits (unsigned int8)
+*/
+/**************************************************************************/
+uint8_t RTC_DS3231::getStatusReg() {
+  return read_register(DS3231_STATUSREG);
+}
+
+/**************************************************************************/
+/*!
+    @brief  Write new values to all bits of the status register e.g., to 
+            clear flags.
+    @param  val New value for the 8 bit status register.
+*/
+/**************************************************************************/
+void RTC_DS3231::setStatusReg(uint8_t val) {
+  write_register(DS3231_STATUSREG, val);
+}
+
+
 /**************************************************************************/
 /*!
     @brief  Set alarm 1 for DS3231

src/RTClib.h

@@ -390,6 +390,10 @@ class RTC_DS3231 : RTC_I2C {
   float getTemperature(); // in Celsius degree
   int8_t getAging();
   void setAging(int8_t val);
+  uint8_t getControlReg();
+  void setControlReg(uint8_t val);
+  uint8_t getStatusReg();
+  void setStatusReg(uint8_t val);
   /*!
       @brief  Convert the day of the week to a representation suitable for
               storing in the DS3231: from 1 (Monday) to 7 (Sunday).