Improve DxCore support

boards/AVR64DD14.json

@@ -4,7 +4,7 @@
     "extra_flags": "-DARDUINO_AVR_AVR64DD14 -DARDUINO_avrdd",
     "f_cpu": "24000000L",
     "mcu": "avr64dd14",
-    "variant": "14pin-standard"
+    "variant": "14pin-ddseries"
   },
   "hardware": {
     "oscillator": "internal"

boards/AVR64DD20.json

@@ -4,7 +4,7 @@
     "extra_flags": "-DARDUINO_AVR_AVR64DD20 -DARDUINO_avrdd",
     "f_cpu": "24000000L",
     "mcu": "avr64dd20",
-    "variant": "20pin-standard"
+    "variant": "20pin-ddseries"
   },
   "hardware": {
     "oscillator": "internal"

boards/AVR64DD28.json

@@ -4,7 +4,7 @@
     "extra_flags": "-DARDUINO_AVR_AVR64DD28 -DARDUINO_avrdd",
     "f_cpu": "24000000L",
     "mcu": "avr64dd28",
-    "variant": "28pin-standard"
+    "variant": "28pin-ddseries"
   },
   "hardware": {
     "oscillator": "internal"

boards/AVR64DD32.json

@@ -4,7 +4,7 @@
     "extra_flags": "-DARDUINO_AVR_AVR64DD32 -DARDUINO_avrdd",
     "f_cpu": "24000000L",
     "mcu": "avr64dd32",
-    "variant": "32pin-standard"
+    "variant": "32pin-ddseries"
   },
   "hardware": {
     "oscillator": "internal"

boards/curiosity_nano_da.json

@@ -1,7 +1,7 @@
 {
   "build": {
     "core": "dxcore",
-    "extra_flags": "-DARDUINO_AVR_AVR128DA48 -DARDUINO_avrda -DLED_BUILTIN=PIN_PC6",
+    "extra_flags": "-DARDUINO_AVR_AVR128DA48 -DARDUINO_avrda -DLED_BUILTIN=PIN_PC6 -DSerial=Serial1",
     "f_cpu": "24000000L",
     "mcu": "avr128da48",
     "variant": "48pin-standard"

boards/curiosity_nano_db.json

@@ -1,7 +1,7 @@
 {
   "build": {
     "core": "dxcore",
-    "extra_flags": "-DARDUINO_AVR_AVR128DB48 -DARDUINO_avrdb -DLED_BUILTIN=PIN_PB3",
+    "extra_flags": "-DARDUINO_AVR_AVR128DB48 -DARDUINO_avrdb -DLED_BUILTIN=PIN_PB3 -DSerial=Serial3",
     "f_cpu": "24000000L",
     "mcu": "avr128db48",
     "variant": "48pin-standard"

builder/bootloader.py

@@ -44,6 +44,24 @@ def get_suitable_optiboot_binary(framework_dir, board_config):
     return bootloader_path
 
 
+def get_bootloader_dxcore(framework_dir, board_config):
+    # print(json.dumps(board_config.manifest, indent=2)) # print board config content
+    port = board_config.get("bootloader.port", "no_bootloader").lower()
+    if port == "no_bootloader":
+        return ""
+
+    btld = board_config.get("bootloader.class")
+    entry = board_config.get("bootloader.entrycond", "extr") # use "extr" by default
+    bootloader_file = f"{btld}_{port}_{entry}.hex"
+    bootloader_path = os.path.join(
+        framework_dir, "bootloaders", "hex", bootloader_file
+    )
+
+    print('Using bootloader', bootloader_file)
+
+    return bootloader_path
+
+
 framework_dir = ""
 if env.get("PIOFRAMEWORK", []):
     framework_dir = platform.get_package_dir(platform.frameworks[env.get(
@@ -60,6 +78,12 @@ def get_suitable_optiboot_binary(framework_dir, board_config):
             sys.stderr.write("Error: `no bootloader` selected in board config!\n")
             env.Exit(1)
         bootloader_path = get_suitable_optiboot_binary(framework_dir, board)
+elif core ==  "dxcore":
+    if not os.path.isfile(bootloader_path):
+        if board.get("bootloader.port", "no_bootloader").lower() == "no_bootloader":
+            sys.stderr.write("Error: `no bootloader` selected in board config!\n")
+            env.Exit(1)
+        bootloader_path = get_bootloader_dxcore(framework_dir, board)
 else:
     if not os.path.isfile(bootloader_path):
         bootloader_path = os.path.join(framework_dir, "bootloaders", bootloader_path)
@@ -83,7 +107,7 @@ def get_suitable_optiboot_binary(framework_dir, board_config):
         "-C",
         os.path.join(
             env.PioPlatform().get_package_dir(
-                "tool-avrdude" if core in ("MegaCoreX", "megatinycore") else "tool-avrdude-megaavr"
+                "tool-avrdude" if core in ("MegaCoreX", "megatinycore", "dxcore") else "tool-avrdude-megaavr"
             )
             or "",
             "avrdude.conf",

builder/frameworks/arduino.py

@@ -71,7 +71,12 @@
 
 oscillator_type = board.get("hardware", {}).get("oscillator", "internal")
 if build_core in ("megatinycore", "dxcore"):
-    env.Append(CPPDEFINES=[("CLOCK_SOURCE", 2 if oscillator_type == "external" else 0)])
+    if oscillator_type == "external":
+        env.Append(CPPDEFINES=[("CLOCK_SOURCE", 2)])
+    elif oscillator_type == "crystal":
+        env.Append(CPPDEFINES=[("CLOCK_SOURCE", 1)])
+    else:
+        env.Append(CPPDEFINES=[("CLOCK_SOURCE", 0)])
 elif oscillator_type == "external" and build_core == "MegaCoreX":
     env.Append(CPPDEFINES=["USE_EXTERNAL_OSCILLATOR"])
 
@@ -116,10 +121,23 @@
             ],
         )
     elif build_core == "dxcore":
+        timer = board.get("hardware.millistimer", "B2")
+        bootloader = board.get("hardware.uart", "no_bootloader").lower()
+        optiboot = "USING_OPTIBOOT" if bootloader != "no_bootloader" else ""
+
+        mvio = ""
+        if board.get("hardware.mvio_enable", "no").lower() == "yes":
+            if "db" in board.get("build.mcu").lower():
+                mvio = "MVIO_ENABLED"
+            else:
+                pass # MVIO is not supported
+
         env.Append(
             CPPDEFINES=[
                 "TWI_MORS_SINGLE",
-                "MILLIS_USE_TIMERB2",
+                "MILLIS_USE_TIMER" + timer,
+                optiboot,
+                mvio,
             ],
             LINKFLAGS=[
                 "-mrelax",

builder/fuses.py

@@ -224,7 +224,7 @@ def calculate_fuses(board_config, predefined_fuses):
         "-C",
         os.path.join(
             env.PioPlatform().get_package_dir(
-                "tool-avrdude" if core in ("MegaCoreX", "megatinycore") else "tool-avrdude-megaavr"
+                "tool-avrdude" if core in ("MegaCoreX", "megatinycore", "dxcore") else "tool-avrdude-megaavr"
             )
             or "",
             "avrdude.conf",

builder/main.py

@@ -76,7 +76,7 @@ def BeforeUpload(target, source, env):  # pylint: disable=W0613,W0621
         join(
             env.PioPlatform().get_package_dir(
                 "tool-avrdude"
-                if env.BoardConfig().get("build.core", "") in ("MegaCoreX", "megatinycore")
+                if env.BoardConfig().get("build.core", "") in ("MegaCoreX", "megatinycore", "dxcore")
                 else "tool-avrdude-megaavr"
             )
             or "",

platform.py

@@ -35,15 +35,15 @@ def configure_default_packages(self, variables, targets):
             if build_core in ("megatinycore", "dxcore"):
                 self.packages["toolchain-atmelavr"]["version"] = "~3.70300.0"
 
-        if build_core in ("MegaCoreX", "megatinycore"):
+        if build_core in ("MegaCoreX", "megatinycore", "dxcore"):
             # MegaCoreX and megatinycore require AVRDUDE v7.1 currently available
             # only in atmelavr platform
             self.packages.pop("tool-avrdude-megaavr", None)
         else:
             self.packages.pop("tool-avrdude", None)
 
         if any(t in targets for t in ("fuses", "bootloader")):
-            if build_core in ("MegaCoreX", "megatinycore"):
+            if build_core in ("MegaCoreX", "megatinycore", "dxcore"):
                 self.packages["tool-avrdude"]["optional"] = False
             else:
                 self.packages["tool-avrdude-megaavr"]["optional"] = False