pinsDebug for 644/1284 & USB646/1286 families

added conditional compilation for PWMs 1C & 3C

add Teensyduino compatibility

==========================================

changes per review - minor formatting changes

1) remove non-printable character at the end of line 687

2) split a really long comment into two lines

3) got rid of some trailing spaces

============================================

Made pinsDebug_Teensyduino.h the same between this PR and PR 5668 which
is for a re-written pinsDebug.h file.

The changes were:
1) added copyright @ GNU license header
2) a blank line crept in.

Marlin/pinsDebug.h

@@ -22,6 +22,10 @@
 
 bool endstop_monitor_flag = false;
 
+#if !defined(TIMER1B)    // working with Teensyduino extension so need to re-define some things
+  #include "pinsDebug_Teensyduino.h"
+#endif
+
 #define  NAME_FORMAT "%-28s"   // one place to specify the format of all the sources of names
                                // "-" left justify, "28" minimum width of name, pad with blanks
 
@@ -683,8 +687,10 @@ static bool pwm_status(uint8_t pin) {
     #if defined(TCCR1A) && defined(COM1A1)
       PWM_CASE(1,A);
       PWM_CASE(1,B);
+      #if defined(COM1C1) && defined(TIMER1C)
         PWM_CASE(1,C);
       #endif
+    #endif
 
     #if defined(TCCR2A) && defined(COM2A1)
       PWM_CASE(2,A);
@@ -694,8 +700,10 @@ static bool pwm_status(uint8_t pin) {
     #if defined(TCCR3A) && defined(COM3A1)
       PWM_CASE(3,A);
       PWM_CASE(3,B);
+      #if defined(COM3C1)
         PWM_CASE(3,C);
       #endif
+    #endif
 
     #ifdef TCCR4A
       PWM_CASE(4,A);
@@ -778,6 +786,7 @@ static void pwm_details(uint8_t pin) {
         else if (TIMSK1 & (_BV(TOIE1) | _BV(ICIE1))) err_prob_interrupt();
         else can_be_used();
         break;
+      #if defined(COM1C1) && defined(TIMER1C)
         case TIMER1C:
           TIMER_PREFIX(1,C,4);
           if (WGM_TEST2) err_is_counter();
@@ -786,6 +795,7 @@ static void pwm_details(uint8_t pin) {
           else can_be_used();
           break;
       #endif
+    #endif
 
     #if defined(TCCR2A) && defined(COM2A1)
       case TIMER2A:
@@ -819,6 +829,7 @@ static void pwm_details(uint8_t pin) {
         else if (TIMSK3 & (_BV(TOIE3) | _BV(ICIE3))) err_prob_interrupt();
         else can_be_used();
         break;
+      #if defined(COM3C1)
       case TIMER3C:
           TIMER_PREFIX(3,C,3);
           if (WGM_TEST2) err_is_counter();
@@ -827,6 +838,7 @@ static void pwm_details(uint8_t pin) {
           else can_be_used();
           break;
       #endif
+    #endif
 
     #ifdef TCCR4A
       case TIMER4A:
@@ -942,4 +954,3 @@ inline void report_pin_state_extended(int8_t pin, bool ignore) {
   pwm_details(pin);
   SERIAL_EOL;
 }
-

Marlin/pinsDebug_Teensyduino.h

@@ -0,0 +1,110 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (C) 2017 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (C) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+ 
+//
+//  some of the pin mapping functions of the Teensduino extension to the Arduino IDE
+//  do not function the same as the other Arduino extensions
+//
+
+
+#define TEENSYDUINO_IDE
+
+//digitalPinToTimer(pin) function works like Arduino but Timers are not defined
+#define TIMER0B 1
+#define TIMER1A 7
+#define TIMER1B 8
+#define TIMER1C 9
+#define TIMER2A 6
+#define TIMER2B 2
+#define TIMER3A 5
+#define TIMER3B 4
+#define TIMER3C 3
+
+// digitalPinToPort function just returns the pin number so need to create our own
+#define PA 1
+#define PB 2
+#define PC 3
+#define PD 4
+#define PE 5
+#define PF 6
+
+#undef digitalPinToPort
+
+const uint8_t PROGMEM digital_pin_to_port_PGM[] = {
+  PD, // 0  - PD0 - INT0 - PWM
+  PD, // 1  - PD1 - INT1 - PWM
+  PD, // 2  - PD2 - INT2 - RX
+  PD, // 3  - PD3 - INT3 - TX
+  PD, // 4  - PD4
+  PD, // 5  - PD5
+  PD, // 6  - PD6
+  PD, // 7  - PD7
+  PE, // 8  - PE0
+  PE, // 9  - PE1
+  PC, // 10 - PC0
+  PC, // 11 - PC1
+  PC, // 12 - PC2
+  PC, // 13 - PC3
+  PC, // 14 - PC4 - PWM
+  PC, // 15 - PC5 - PWM
+  PC, // 16 - PC6 - PWM
+  PC, // 17 - PC7
+  PE, // 18 - PE6 - INT6
+  PE, // 19 - PE7 - INT7
+  PB, // 20 - PB0
+  PB, // 21 - PB1
+  PB, // 22 - PB2
+  PB, // 23 - PB3
+  PB, // 24 - PB4 - PWM
+  PB, // 25 - PB5 - PWM
+  PB, // 26 - PB6 - PWM
+  PB, // 27 - PB7 - PWM
+  PA, // 28 - PA0
+  PA, // 29 - PA1
+  PA, // 30 - PA2
+  PA, // 31 - PA3
+  PA, // 32 - PA4
+  PA, // 33 - PA5
+  PA, // 34 - PA6
+  PA, // 35 - PA7
+  PE, // 36 - PE4 - INT4
+  PE, // 37 - PE5 - INT5
+  PF, // 38 - PF0 - A0
+  PF, // 39 - PF1 - A1
+  PF, // 40 - PF2 - A2
+  PF, // 41 - PF3 - A3
+  PF, // 42 - PF4 - A4
+  PF, // 43 - PF5 - A5
+  PF, // 44 - PF6 - A6
+  PF, // 45 - PF7 - A7
+  PE, // 46 - PE2 (not defined in teensyduino)
+  PE, // 47 - PE3 (not defined in teensyduino)
+};
+
+#define digitalPinToPort(P) ( pgm_read_byte( digital_pin_to_port_PGM + (P) ) )
+
+// digitalPinToBitMask(pin) is OK
+
+#define digitalRead_mod(p)  digitalRead(p)   // Teensyduino's version of digitalRead doesn't
+                                             // disable the PWMs so we can use it as is
+
+// portModeRegister(pin) is OK