digitalPinToPort back from arduino core

DCCTimer.h

@@ -92,6 +92,7 @@ private:
 #if defined(ARDUINO_ARCH_STM32)  // TODO: PMA temporary hack - assumes 100Mhz F_CPU as STM32 can change frequency
   static const long CLOCK_CYCLES=(100000000L / 1000000 * DCC_SIGNAL_TIME) >>1;
 #elif defined(ARDUINO_GIGA)
+  ///TJF: we could get F_CPU from SystemCoreClock, but it will not allow as it is a non-constant value
   static const long CLOCK_CYCLES=(480000000L / 1000000 * DCC_SIGNAL_TIME) >>1;
 #else
   static const long CLOCK_CYCLES=(F_CPU / 1000000 * DCC_SIGNAL_TIME) >>1;

MotorDriver.cpp

@@ -530,7 +530,8 @@ void  MotorDriver::getFastPin(const FSH* type,int pin, bool input, FASTPIN & res
 #elif defined(ARDUINO_ARCH_STM32)
     GPIO_TypeDef *port = digitalPinToPort(pin);
 #elif defined(ARDUINO_GIGA)
-    auto * port = ((GPIO_TypeDef *)(GPIOA_BASE + (GPIOB_BASE - GPIOA_BASE) * (digitalPinToPinName(pin) >> 4)));
+    //auto * port = ((GPIO_TypeDef *)(GPIOA_BASE + (GPIOB_BASE - GPIOA_BASE) * (digitalPinToPinName(pin) >> 4)));
+    GPIO_TypeDef *port = (GPIO_TypeDef *)digitalPinToPort(pin);
 #else
     uint8_t port = digitalPinToPort(pin);
 #endif