From 60dc02682b98da8c23b3b14f9ab544d90f852f6b Mon Sep 17 00:00:00 2001
From: Valeriy Koval <valeros@bigmir.net>
Date: Mon, 27 Apr 2015 18:59:40 +0300
Subject: [PATCH] Add GDB as alternative uploader to ststm32 platform //
 Resolve #175

---
 platformio/builder/scripts/ststm32.py | 43 ++++++++++++++++++++-------
 1 file changed, 32 insertions(+), 11 deletions(-)

diff --git a/platformio/builder/scripts/ststm32.py b/platformio/builder/scripts/ststm32.py
index 7b4d80e3..496a72d3 100644
--- a/platformio/builder/scripts/ststm32.py
+++ b/platformio/builder/scripts/ststm32.py
@@ -6,25 +6,46 @@
 """
 
 import platform
-from os.path import join
+from os.path import isfile, join
 
 from SCons.Script import (COMMAND_LINE_TARGETS, AlwaysBuild, Default,
-                          DefaultEnvironment, SConscript)
+                          DefaultEnvironment, Exit, SConscript)
 
 env = DefaultEnvironment()
 
 SConscript(env.subst(join("$PIOBUILDER_DIR", "scripts", "basearm.py")))
 
-env.Replace(
-    UPLOADER=join("$PIOPACKAGES_DIR", "tool-stlink", "st-flash"),
-    UPLOADERFLAGS=[
-        "write",        # write in flash
-        "$SOURCES",     # firmware path to flash
-        "0x08000000"    # flash start adress
-    ],
+if "gdb" in env['UPLOAD_PROTOCOL']:
+    if not isfile(join(env.subst("$PROJECT_DIR"), "upload.gdb")):
+        Exit(
+            "You are using GDB as firmware uploader. "
+            "Please specify upload commands in upload.gdb "
+            "file in project directory!"
+        )
+    env.Replace(
+        UPLOADER=join(
+            "$PIOPACKAGES_DIR", "toolchain-gccarmnoneeabi",
+            "bin", "arm-none-eabi-gdb"
+        ),
+        UPLOADERFLAGS=[
+            join("$BUILD_DIR", "firmware.elf"),
+            "-batch",
+            "-x", join("$PROJECT_DIR", "upload.gdb")
+        ],
 
-    UPLOADCMD="$UPLOADER $UPLOADERFLAGS"
-)
+        UPLOADCMD="$UPLOADER $UPLOADERFLAGS"
+    )
+else:
+    env.Replace(
+        UPLOADER=join("$PIOPACKAGES_DIR", "tool-stlink", "st-flash"),
+        UPLOADERFLAGS=[
+            "write",        # write in flash
+            "$SOURCES",     # firmware path to flash
+            "0x08000000"    # flash start adress
+        ],
+
+        UPLOADCMD="$UPLOADER $UPLOADERFLAGS"
+    )
 
 
 env.Append(