Arduino OPTA support (#678)

Resolves #676

Author: maxgerhardt

boards/opta.json

@@ -0,0 +1,51 @@
+{
+  "build": {
+    "arduino": {
+      "ldscript": "linker_script.ld",
+      "flash_layout": "50_50"
+    },
+    "extra_flags": "-DARDUINO_OPTA",
+    "core": "arduino",
+    "cpu": "cortex-m7",
+    "f_cpu": "480000000L",
+    "mcu": "stm32h747xih6",
+    "variant": "OPTA",
+    "product_line": "STM32H747xx",
+    "hwids": [
+      [
+        "0x2341",
+        "0x0364"
+      ]
+    ]
+  },
+  "connectivity": [
+    "bluetooth",
+    "wifi"
+  ],
+  "debug": {
+    "jlink_device": "STM32H747XI_M7",
+    "openocd_target": "stm32h7x_dual_bank"
+  },
+  "frameworks": [
+    "arduino"
+  ],
+  "name": "Arduino Opta",
+  "upload": {
+    "maximum_ram_size": 523624,
+    "maximum_size": 786432,
+    "protocol": "dfu",
+    "protocols": [
+      "cmsis-dap",
+      "dfu",
+      "jlink",
+      "stlink",
+      "mbed"
+    ],
+    "require_upload_port": true,
+    "use_1200bps_touch": true,
+    "wait_for_upload_port": true,
+    "offset_address": "0x08040000"
+  },
+  "url": "https://www.arduino.cc/pro/hardware-arduino-opta",
+  "vendor": "Arduino"
+}

builder/main.py

@@ -220,7 +220,7 @@ def _jlink_cmd_script(env, source):
     upload_actions = [env.VerboseAction("$UPLOADCMD", "Uploading $SOURCE")]
 
     if "arduino" in frameworks:
-        if env.subst("$BOARD").startswith("portenta"):
+        if env.subst("$BOARD").startswith(("portenta", "opta")):
             upload_actions.insert(
                 0,
                 env.VerboseAction(BeforeUpload, "Looking for upload port...")

platform.json

@@ -216,7 +216,7 @@
       "type": "framework",
       "optional": true,
       "owner": "platformio",
-      "version": "~3.1.1"
+      "version": "~3.5.4"
     },
     "framework-stm32cubef0": {
       "type": "framework",

platform.py

@@ -32,7 +32,7 @@ def configure_default_packages(self, variables, targets):
 
         frameworks = variables.get("pioframework", [])
         if "arduino" in frameworks:
-            if board.startswith("portenta"):
+            if board.startswith(("portenta", "opta")):
                 self.frameworks["arduino"]["package"] = "framework-arduino-mbed"
                 self.frameworks["arduino"][
                     "script"