DM: add PWM to pins 8, 9, 10 on mega

Author: deanm1278

variants/grand_central_m4/variant.cpp

@@ -44,9 +44,9 @@ const PinDescription g_APinDescription[]=
   { PORTD,  21, PIO_DIGITAL, PIN_ATTR_PWM_F, No_ADC_Channel, TCC1_CH1, NOT_ON_TIMER,  EXTERNAL_INT_11 },
 
   // Digital High
-  { PORTB,  18, PIO_DIGITAL, PIN_ATTR_DIGITAL, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER,  EXTERNAL_INT_2 },
-  { PORTB,  2, PIO_DIGITAL, PIN_ATTR_DIGITAL, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER,  EXTERNAL_INT_3 },
-  { PORTB,  22, PIO_DIGITAL, PIN_ATTR_DIGITAL, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER,  EXTERNAL_INT_6 },
+  { PORTB,  18, PIO_DIGITAL, PIN_ATTR_PWM_F, No_ADC_Channel, TCC1_CH0, NOT_ON_TIMER,  EXTERNAL_INT_2 },
+  { PORTB,  2, PIO_DIGITAL, PIN_ATTR_PWM_E, No_ADC_Channel, TC6_CH0, TC6_CH0,  EXTERNAL_INT_3 },
+  { PORTB,  22, PIO_DIGITAL, PIN_ATTR_PWM_E, No_ADC_Channel, TC7_CH0, TC7_CH0,  EXTERNAL_INT_6 },
   { PORTB,  23, PIO_DIGITAL, PIN_ATTR_DIGITAL, No_ADC_Channel, NOT_ON_PWM, NOT_ON_TIMER,  EXTERNAL_INT_7 },
   { PORTB,  0, PIO_DIGITAL, PIN_ATTR_PWM_E, No_ADC_Channel, TC7_CH0, TC7_CH0,  EXTERNAL_INT_0 },