Initial support for Arduino Zero board // Resolve #356

platformio/boards/arduino.json

@@ -658,7 +658,7 @@
             "core": "arduino",
             "extra_flags": "-D__SAM3X8E__ -DARDUINO_SAM_DUE -DARDUINO_ARCH_SAM",
             "f_cpu": "84000000L",
-            "mcu": "at91sam3x8e",
+            "mcu": "sam3x8e",
             "cpu": "cortex-m3",
             "pid": "0x003e",
             "usb_product": "Arduino Due",
@@ -686,7 +686,7 @@
             "core": "arduino",
             "extra_flags": "-D__SAM3X8E__ -DARDUINO_SAM_DUE -DARDUINO_ARCH_SAM",
             "f_cpu": "84000000L",
-            "mcu": "at91sam3x8e",
+            "mcu": "sam3x8e",
             "cpu": "cortex-m3",
             "pid": "0x003e",
             "usb_product": "Arduino Due",
@@ -708,5 +708,61 @@
         },
         "url": "http://arduino.cc/en/Main/arduinoBoardDue",
         "vendor": "Arduino"
+    },
+    "zero": {
+        "build": {
+            "core": "arduino_zero",
+            "extra_flags": "-DARDUINO_SAMD_ZERO -DARDUINO_ARCH_SAMD -D__SAMD21G18A__",
+            "f_cpu": "48000000L",
+            "mcu": "samd21g18a",
+            "cpu": "cortex-m0plus",
+            "pid": "0x804d",
+            "usb_product": "Arduino Zero",
+            "variant": "arduino_zero",
+            "vid": "0x2341",
+            "ldscript": "flash_with_bootloader.ld"
+        },
+        "frameworks": ["arduino"],
+        "name": "Arduino Zero (Programming Port)",
+        "platform": "atmelsam",
+        "upload": {
+            "disable_flushing": true,
+            "maximum_ram_size": 32768,
+            "maximum_size": 262144,
+            "protocol": "sam-ba",
+            "require_upload_port" : false,
+            "use_1200bps_touch": false,
+            "wait_for_upload_port": false
+        },
+        "url": "https://www.arduino.cc/en/Main/ArduinoBoardZero",
+        "vendor": "Arduino"
+    },
+    "zeroUSB": {
+        "build": {
+            "core": "arduino_zero",
+            "extra_flags": "-DARDUINO_SAMD_ZERO -DARDUINO_ARCH_SAMD -D__SAMD21G18A__",
+            "f_cpu": "48000000L",
+            "mcu": "samd21g18a",
+            "cpu": "cortex-m0plus",
+            "pid": "0x804d",
+            "usb_product": "Arduino Zero",
+            "variant": "arduino_zero",
+            "vid": "0x2341",
+            "ldscript": "flash_with_bootloader.ld"
+        },
+        "frameworks": ["arduino"],
+        "name": "Arduino Zero (USB Native Port)",
+        "platform": "atmelsam",
+        "upload": {
+            "disable_flushing": true,
+            "maximum_ram_size": 32768,
+            "maximum_size": 262144,
+            "protocol": "sam-ba",
+            "require_upload_port" : true,
+            "use_1200bps_touch": true,
+            "wait_for_upload_port": true
+        },
+        "url": "https://www.arduino.cc/en/Main/ArduinoBoardZero",
+        "vendor": "Arduino"
     }
 }

platformio/builder/scripts/atmelsam.py

@@ -28,12 +28,13 @@ def BeforeUpload(target, source, env):  # pylint: disable=W0613,W0621
     env.AutodetectUploadPort()
 
     board_type = env.subst("$BOARD")
-    env.Append(
-        UPLOADERFLAGS=[
-            "-U",
-            "true" if ("usb" in board_type.lower(
-            ) or board_type == "digix") else "false"
-        ])
+    if "zero" not in board_type:
+        env.Append(
+            UPLOADERFLAGS=[
+                "-U",
+                "true" if ("usb" in board_type.lower(
+                ) or board_type == "digix") else "false"
+            ])
 
     upload_options = env.get("BOARD_OPTIONS", {}).get("upload", {})
 
@@ -57,33 +58,82 @@ env = DefaultEnvironment()
 
 SConscript(env.subst(join("$PIOBUILDER_DIR", "scripts", "basearm.py")))
 
-env.Replace(
-    UPLOADER=join("$PIOPACKAGES_DIR", "$PIOPACKAGE_UPLOADER", "bossac"),
-    UPLOADERFLAGS=[
-        "--info",
-        "--port", "$UPLOAD_PORT",
-        "--erase",
-        "--write",
-        "--verify",
-        "--boot",
-        "--reset"
-    ],
-    UPLOADCMD='"$UPLOADER" $UPLOADERFLAGS $SOURCES'
-)
+if "zero" == env.subst("$BOARD"):
+    env.Replace(
+        UPLOADER=join("$PIOPACKAGES_DIR", "tool-openocd", "bin", "openocd"),
+        UPLOADERFLAGS=[
+            "-d2",
+            "-s",
+            join(
+                "$PIOPACKAGES_DIR",
+                "tool-openocd", "share", "openocd", "scripts"),
+            "-f",
+            join(
+                "$PLATFORMFW_DIR", "variants",
+                "${BOARD_OPTIONS['build']['variant']}", "openocd_scripts",
+                "${BOARD_OPTIONS['build']['variant']}.cfg"
+            ),
+            "-c", "\"telnet_port", "disabled;",
+            "program", "{{$SOURCES}}",
+            "verify", "reset", "0x00002000;", "shutdown\""
+        ],
+        UPLOADCMD='"$UPLOADER" $UPLOADERFLAGS'
+    )
+else:
+    env.Replace(
+        UPLOADER=join("$PIOPACKAGES_DIR", "$PIOPACKAGE_UPLOADER", "bossac"),
+        UPLOADERFLAGS=[
+            "--info",
+            "--port", "$UPLOAD_PORT",
+            "--erase",
+            "--write",
+            "--verify",
+            "--reset",
+            "--debug"
+        ],
+        UPLOADCMD='"$UPLOADER" $UPLOADERFLAGS $SOURCES'
+    )
 
 env.Append(
     CPPDEFINES=[
-        "printf=iprintf",
         "USBCON",
         'USB_MANUFACTURER="PlatformIO"'
-    ],
-
-    LINKFLAGS=[
-        "-Wl,--entry=Reset_Handler",
-        "-Wl,--start-group"
     ]
 )
 
+
+if "due" in env.subst("$BOARD"):
+    env.Append(
+        CPPDEFINES=[
+            "printf=iprintf"
+        ],
+
+        LINKFLAGS=[
+            "-Wl,--entry=Reset_Handler",
+            "-Wl,--start-group"
+        ],
+
+        UPLOADERFLAGS=[
+            "--boot",
+        ]
+
+    )
+elif "zero" in env.subst("$BOARD"):
+    env.Append(
+        CPPFLAGS=[
+            "--param", "max-inline-insns-single=500"
+        ],
+
+        CXXFLAGS=[
+            "-fno-threadsafe-statics"
+        ],
+
+        LINKFLAGS=[
+            "--specs=nosys.specs",
+            "--specs=nano.specs"
+        ]
+    )
+
 #
 # Target: Build executable and linkable firmware
 #
@@ -110,8 +160,12 @@ AlwaysBuild(target_size)
 # Target: Upload by default .bin file
 #
 
-upload = env.Alias(["upload", "uploadlazy"], target_firm,
-                   [BeforeUpload, "$UPLOADCMD"])
+if "zero" == env.subst("$BOARD"):
+    upload = env.Alias(["upload", "uploadlazy"], target_firm, "$UPLOADCMD")
+else:
+    upload = env.Alias(["upload", "uploadlazy"], target_firm,
+                       [BeforeUpload, "$UPLOADCMD"])
+
 AlwaysBuild(upload)
 
 #

platformio/builder/scripts/frameworks/arduino.py

@@ -168,7 +168,22 @@ if env.subst("${PLATFORMFW_DIR}")[-3:] == "sam":
             join("$BUILD_DIR", "FrameworkLibSam"),
             join("$BUILD_DIR", "FrameworkLibSam", "include"),
             join("$BUILD_DIR", "FrameworkDeviceInc"),
-            join("$BUILD_DIR", "FrameworkDeviceInc", "sam3xa", "include")
+            join(
+                "$BUILD_DIR",
+                "FrameworkDeviceInc",
+                "${BOARD_OPTIONS['build']['mcu'][3:]}",
+                "include"
+            )
+        ],
+
+        LIBPATH=[
+            join(
+                "$PLATFORMFW_DIR",
+                "variants",
+                "${BOARD_OPTIONS['build']['variant']}",
+                "linker_scripts",
+                "gcc"
+            )
         ]
     )
 
@@ -235,12 +250,24 @@ if "variant" in BOARD_BUILDOPTS:
     ))
 
 envsafe = env.Clone()
+
+if "zero" in env.subst("$BOARD"):
+    envsafe.Append(
+        CFLAGS=[
+            "-std=gnu11"
+        ],
+
+        CXXFLAGS=[
+            "-std=gnu++11",
+        ]
+    )
+
 libs.append(envsafe.BuildLibrary(
     join("$BUILD_DIR", "FrameworkArduino"),
     join("$PLATFORMFW_DIR", "cores", "${BOARD_OPTIONS['build']['core']}")
 ))
 
-if env.subst("${PLATFORMFW_DIR}")[-3:] == "sam":
+if "due" in env.subst("$BOARD"):
     env.Append(
         LIBPATH=[
             join("$PLATFORMFW_DIR", "variants",

platformio/platforms/atmelsam.py

@@ -42,6 +42,10 @@ class AtmelsamPlatform(BasePlatform):
 
         "tool-bossac": {
             "alias": "uploader"
+        },
+
+        "tool-openocd": {
+            "alias": "uploader"
         }
     }