[genpinmap] Set to NC by default

This allows to build the file without any modification

Author: fpistm

src/genpinmap/genpinmap_arduino.py

@@ -943,7 +943,7 @@ def print_pinamevar():
 
 # Variant files generation
 def spi_pins_variant():
-    ss_pin = ss1_pin = ss2_pin = ss3_pin = mosi_pin = miso_pin = sck_pin = "PYn"
+    ss_pin = ss1_pin = ss2_pin = ss3_pin = mosi_pin = miso_pin = sck_pin = "NC"
 
     # Iterate to find match instance if any
     for mosi in spimosi_list:
@@ -968,13 +968,13 @@ def spi_pins_variant():
         for ss in spissel_list:
             ss_inst = ss[2].split("_", 1)[0]
             if mosi_inst == ss_inst:
-                if "PYn" == ss_pin:
+                if "NC" == ss_pin:
                     ss_pin = ss[0].replace("_", "", 1)
-                elif "PYn" == ss1_pin:
+                elif "NC" == ss1_pin:
                     ss1_pin = ss[0].replace("_", "", 1)
-                elif "PYn" == ss2_pin:
+                elif "NC" == ss2_pin:
                     ss2_pin = ss[0].replace("_", "", 1)
-                elif "PYn" == ss3_pin:
+                elif "NC" == ss3_pin:
                     ss3_pin = ss[0].replace("_", "", 1)
                     break
         break
@@ -992,7 +992,7 @@ def spi_pins_variant():
 
 
 def i2c_pins_variant():
-    sda_pin = scl_pin = "PYn"
+    sda_pin = scl_pin = "NC"
     # Iterate to find match instance if any
     for sda in i2csda_list:
         sda_inst = sda[2].split("_", 1)[0]
@@ -1042,7 +1042,7 @@ def serial_pins_variant():
             print("No serial instance number found!")
             serialnum = "-1"
     else:
-        serialtx_pin = serialtx_pin = "PYn"
+        serialtx_pin = serialtx_pin = "NC"
         serialnum = "-1"
         print("No serial found!")
     return dict(instance=serialnum, rx=serialrx_pin, tx=serialtx_pin)

src/genpinmap/templates/variant.h

@@ -42,12 +42,12 @@ extern "C" {
 
 // On-board LED pin number
 #ifndef LED_BUILTIN
-#define LED_BUILTIN             PYn
+#define LED_BUILTIN             NC
 #endif
 
 // On-board user button
 #ifndef USER_BTN
-#define USER_BTN                PYn
+#define USER_BTN                NC
 #endif
 
 // SPI definitions
@@ -135,8 +135,12 @@ extern "C" {
   //
   // SERIAL_PORT_HARDWARE_OPEN  Hardware serial ports which are open for use.  Their RX & TX
   //                            pins are NOT connected to anything by default.
-  #define SERIAL_PORT_MONITOR   Serial
-  #define SERIAL_PORT_HARDWARE  Serial
+  #ifndef SERIAL_PORT_MONITOR
+    #define SERIAL_PORT_MONITOR   Serial
+  #endif
+  #ifndef SERIAL_PORT_HARDWARE
+    #define SERIAL_PORT_HARDWARE  Serial
+  #endif
 #endif
 
 #endif /* _VARIANT_ARDUINO_STM32_ */