Force forward slash for paths for openocd-esp32, new board D-duino-32 (#139)

* Force forward slash for paths for openocd-esp32

fixes #136

* adding D-duino-32 board type.

This board has a built in OLED and non-standard SCL/SDA pins.

boards/d-duino-32.json

@@ -0,0 +1,49 @@
+{
+    "build": {
+      "core": "esp32",
+      "extra_flags": "-DARDUINO_D_DUINO_32",
+      "f_cpu": "240000000L",
+      "f_flash": "40000000L",
+      "flash_mode": "dio",
+      "ldscript": "esp32_out.ld",
+      "mcu": "esp32",
+      "variant": "d-duino-32"
+    },
+    "connectivity": [
+      "wifi",
+      "bluetooth",
+      "ethernet",
+      "can"
+    ],
+    "debug": {
+      "openocd_board": "esp-wroom-32.cfg"
+    },
+    "frameworks": [
+      "arduino",
+      "espidf"
+    ],
+    "name": "D-duino-32",
+    "upload": {
+      "flash_size": "4MB",
+      "maximum_ram_size": 327680,
+      "maximum_size": 4194304,
+      "protocol": "esptool",
+      "protocols": [
+        "esptool",
+        "esp-prog",
+        "jlink",
+        "olimex-arm-usb-tiny-h",
+        "olimex-arm-usb-ocd-h",
+        "olimex-arm-usb-ocd",
+        "olimex-jtag-tiny",
+        "iot-bus-jtag",
+        "tumpa",
+        "minimodule"
+      ],
+      "require_upload_port": true,
+      "speed": 921600
+    },
+    "url": "https://www.tindie.com/products/lspoplove/dstike-d-duino-32-v3/",
+    "vendor": "DSTIKE"
+  }
+  

builder/main.py

@@ -304,17 +304,17 @@ if upload_protocol == "esptool":
 
 elif upload_protocol in debug_tools:
     openocd_dir = platform.get_package_dir("tool-openocd-esp32") or ""
-    uploader_flags = ["-s", openocd_dir]
+    uploader_flags = ["-s", openocd_dir.replace('\\', '/')]
     uploader_flags.extend(
         debug_tools.get(upload_protocol).get("server").get("arguments", []))
     uploader_flags.extend(["-c", 'program_esp32 "{{$SOURCE}}" 0x10000 verify'])
     for image in env.get("FLASH_EXTRA_IMAGES", []):
         uploader_flags.extend(
-            ["-c", 'program_esp32 "%s" %s verify' % (image[1], image[0])])
+            ["-c", 'program_esp32 "%s" %s verify' % (image[1].replace('\\', '/'), image[0].replace('\\', '/'))])
     uploader_flags.extend(["-c", "reset run; shutdown"])
     for i, item in enumerate(uploader_flags):
         if "$PACKAGE_DIR" in item:
-            uploader_flags[i] = item.replace("$PACKAGE_DIR", openocd_dir)
+            uploader_flags[i] = item.replace("$PACKAGE_DIR", openocd_dir.replace('\\', '/'))
 
     env.Replace(
         UPLOADER="openocd",