platforms/de0nano: directly use JP1 connector for serial pins.

litex_boards/platforms/de0nano.py

@@ -38,8 +38,8 @@ _io = [
     ("serial", 0,
         # Compatible with cheap FT232 based cables (ex: Gaoominy 6Pin Ftdi Ft232Rl Ft232)
         # GND on JP1 Pin 12.
-        Subsignal("tx", Pins("B5"), IOStandard("3.3-V LVTTL")), # GPIO_07 (JP1 Pin 10)
-        Subsignal("rx", Pins("B4"), IOStandard("3.3-V LVTTL"))  # GPIO_05 (JP1 Pin 8)
+        Subsignal("tx", Pins("JP1:10"), IOStandard("3.3-V LVTTL")),
+        Subsignal("rx", Pins("JP1:8"),  IOStandard("3.3-V LVTTL"))
     ),
 
     # SDR SDRAM
@@ -120,10 +120,10 @@ _io = [
 # Connectors ---------------------------------------------------------------------------------------
 
 _connectors = [
-    # PIN    1  2   3   4   5   6   7   8   9   10  11  12  13  14  15  16  17  18 19 20  21  22  23  24  25  26  27  28 29 30 31  32  33  34  35  36  37  38  39  40
-    ("JP1", "A8 D3  B8  C3  A2  A3  B3  B4  A4  B5  -   -   A5  D5  B6  A6  B7  D6 A7 C6  C8  E6  E7  D8  E8  F8  F9  E9  - -  C9  D9  E11 E10 C11 B11 A12 D11 D12 B12"),
-    ("JP2", "T9 F13 R9  T15 T14 T13 R13 T12 R12 T11 -   -   T10 R11 P11 R10 N12 P9 N9 N11 L16 K16 R16 L15 P15 P16 R14 N16 - -  N15 P14 L14 N14 M10 L13 J16 K15 J13 J14"),
-    ("JP3", "-  E15 E16 M16 A14 B16 C14 C16 C15 D16 D15 D14 F15 F16 F14 G16 G15 -  -  -   -   -   -   -   -   -")
+    # PIN    0  1  2   3   4   5   6   7   8   9   10  11  12  13  14  15  16  17  18 19 20  21  22  23  24  25  26  27  28 29 30 31  32  33  34  35  36  37  38  39  40
+    ("JP1", "-  A8 D3  B8  C3  A2  A3  B3  B4  A4  B5  -   -   A5  D5  B6  A6  B7  D6 A7 C6  C8  E6  E7  D8  E8  F8  F9  E9  - -  C9  D9  E11 E10 C11 B11 A12 D11 D12 B12"),
+    ("JP2", "-  T9 F13 R9  T15 T14 T13 R13 T12 R12 T11 -   -   T10 R11 P11 R10 N12 P9 N9 N11 L16 K16 R16 L15 P15 P16 R14 N16 - -  N15 P14 L14 N14 M10 L13 J16 K15 J13 J14"),
+    ("JP3", "-  -  E15 E16 M16 A14 B16 C14 C16 C15 D16 D15 D14 F15 F16 F14 G16 G15 -  -  -   -   -   -   -   -   -")
 ]
 
 # Platform -----------------------------------------------------------------------------------------