diff --git a/README.md b/README.md
index 82d1df04..e45dfdbd 100644
--- a/README.md
+++ b/README.md
@@ -99,7 +99,7 @@ Program a nRF51822
 To flash an application to a nRF51822 BLE chip, there is some setup
 you must do.
 
-1. Install the [`arm-none-eabi-gcc`](https://launchpad.net/gcc-arm-embedded) compiler.
+First, install the [`arm-none-eabi-gcc`](https://launchpad.net/gcc-arm-embedded) compiler.
 
     On Ubuntu:
 
@@ -107,13 +107,15 @@ you must do.
         sudo apt-get update
         sudo apt-get install gcc-arm-embedded
 
-2. Install the JLink [software](https://www.segger.com/jlink-software.html)
+### With JLink
+
+1. Install the JLink [software](https://www.segger.com/jlink-software.html)
 for your platform. You want the "Software and documentation pack".
 
-3. Acquire a [JLink JTAG programmer](https://www.segger.com/jlink-general-info.html).
+2. Acquire a [JLink JTAG programmer](https://www.segger.com/jlink-general-info.html).
 The "EDU" edition works fine.
 
-4. Program an app! With the JLink box attached to the target board:
+3. Program an app! With the JLink box attached to the target board:
 
         make flash
 
@@ -122,12 +124,33 @@ The "EDU" edition works fine.
 
         make erase-all
 
-    See the [make](https://github.com/lab11/nrf5x-base/tree/master/make) folder
-    for a complete list of commands.
+### With STLink/v2
+
+1. Install [openocd](http://openocd.org/), an On-Chip Debugging / In-System Programming tool.
+
+    On Ubuntu:
+
+        sudo apt-get install openocd
+
+2. Get a [STLink/v2 programmer](http://www.st.com/en/development-tools/st-link-v2.html).
+There are also popular unofficial versions described [here](http://wiki.sgmk-ssam.ch/wiki/STM32_dev#ST-Link_V2_Programmer) in more detail.
+
+3. Add `PROGRAMMER = stlinkv2` to your Makefile.
+
+4. Program an app! With the STLink attached to the target board:
+
+        make flash-softdevice # only necessary the first time, after erase of if you change the softdevice
+        make flash
+
+    will write the app and softdevice to the nRF51822. You can erase
+    a chip with:
+
+        make erase-all
+
+
+See the [make](https://github.com/lab11/nrf5x-base/tree/master/make) folder for a complete list of commands.
 
-    Most of our boards use a [TagConnect header](http://www.tag-connect.com/TC2030-IDC-NL)
-    instead of the way-too-large ARM JTAG header. We use [our own](https://github.com/lab11/jtag-tagconnect)
-    adapter, but Segger also makes [one](https://www.segger.com/jlink-6-pin-needle-adapter.html).
+Most of our boards use a [TagConnect header](http://www.tag-connect.com/TC2030-IDC-NL) instead of the way-too-large ARM JTAG header. We use [our own](https://github.com/lab11/jtag-tagconnect) adapter, but Segger also makes [one](https://www.segger.com/jlink-6-pin-needle-adapter.html).
 
 
 Git Submodules
diff --git a/make/Makefile.posix b/make/Makefile.posix
index 8771a797..bfe58335 100644
--- a/make/Makefile.posix
+++ b/make/Makefile.posix
@@ -21,6 +21,8 @@ JLINK = -JLinkExe $(JLINK_OPTIONS) $(JLINKEXE_OPTION)
 JLINKGDBSERVER = JLinkGDBServer $(JLINK_OPTIONS) $(JLINKGDBSERVER_OPTION)
 JLINKRTTCLIENT = JLinkRTTClient $(JLINK_OPTIONS) $(JLINKRTTCLIENT_OPTION)
 
+OPENOCD = openocd -f interface/stlink-v2.cfg -f target/nrf51.cfg # FIXME nrf51
+
 SOFTDEVICE_OUTPUT = $(OUTPUT_PATH)$(notdir $(SOFTDEVICE))
 
 clean: clean-bootloader
@@ -32,12 +34,17 @@ clean: clean-bootloader
 clean-bootloader:
 	rm -rf $(BASE_DIR)/dfu/_build
 
-ifndef ENABLE_WIRELESS_DFU
-flash: all flash.jlink test-softdevice
-	$(JLINK) $(OUTPUT_PATH)flash.jlink
+ifeq ($(PROGRAMMER),stlinkv2)
+    # TODO: DFU support, test-softdevice
+    flash: all flash.stlinkv2
 else
-flash: all flash.jlink test-softdevice flash-bootloader
-	$(JLINK) $(OUTPUT_PATH)flash.jlink
+    ifndef ENABLE_WIRELESS_DFU
+    flash: all flash.jlink test-softdevice
+	    $(JLINK) $(OUTPUT_PATH)flash.jlink
+    else
+    flash: all flash.jlink test-softdevice flash-bootloader
+	    $(JLINK) $(OUTPUT_PATH)flash.jlink
+    endif
 endif
 
 
@@ -63,12 +70,21 @@ ifdef ID
 endif
 	printf "loadfile $(HEX) \nr\ng\nexit\n" >> $(OUTPUT_PATH)flash.jlink
 
+flash.stlinkv2:
+	$(MAKE_BUILD_FOLDER)
+	$(OPENOCD) -c 'program $(HEX) verify reset exit'
 
-test-softdevice: test-softdevice.jlink
 ifndef SOFTDEVICE
+define softdevice-defined=
 	$(error "You need to set the SOFTDEVICE command-line parameter to a path (without spaces) to the softdevice hex-file")
+endef
+else
+define softdevice-defined=
+endef
 endif
 
+test-softdevice: test-softdevice.jlink $(softdevice-defined)
+
 ifneq ($(SOFTDEVICE_MODEL),blank)
 	$(MAKE_BUILD_FOLDER)
 	@touch $(SOFTDEVICE_TEST_FLASH)
@@ -87,19 +103,24 @@ test-softdevice.jlink:
 	$(MAKE_BUILD_FOLDER)
 	printf "r\nsavebin $(SOFTDEVICE_TEST_FLASH) $(SOFTDEVICE_TEST_ADDR) $(SOFTDEVICE_TEST_LEN)\nexit\n" > $(OUTPUT_PATH)test-softdevice.jlink
 
-flash-softdevice: erase-all flash-softdevice.jlink
-ifndef SOFTDEVICE
-	$(error "You need to set the SOFTDEVICE command-line parameter to a path (without spaces) to the softdevice hex-file")
-endif
+ifeq ($(PROGRAMMER),stlinkv2)
+flash-softdevice: erase-all $(softdevice-defined) flash-softdevice.stlinkv2
+else
+flash-softdevice: erase-all $(softdevice-defined) flash-softdevice.jlink
 	$(MAKE_BUILD_FOLDER)
 	$(OBJCOPY) -Iihex -Obinary $(SOFTDEVICE) $(SOFTDEVICE_OUTPUT:.hex=.bin)
 	$(JLINK) $(OUTPUT_PATH)flash-softdevice.jlink
+endif
 
 flash-softdevice.jlink:
 	# Write to NVMC to enable write. Write mainpart, write UICR. Assumes device is erased.
 	$(MAKE_BUILD_FOLDER)
 	printf "w4 4001e504 1\nloadbin \"$(SOFTDEVICE_OUTPUT:.hex=.bin)\" 0\nr\ng\nexit\n" > $(OUTPUT_PATH)flash-softdevice.jlink
 
+flash-softdevice.stlinkv2:
+	$(MAKE_BUILD_FOLDER)
+	$(OPENOCD) -c 'program $(SOFTDEVICE) verify reset exit'
+
 flash-bootloader: bootloader flash-bootloader.jlink test-softdevice
 	$(JLINK) $(OUTPUT_PATH)flash-bootloader.jlink
 
@@ -131,38 +152,67 @@ pin-reset: pin-reset.jlink
 	$(MAKE_BUILD_FOLDER)
 	$(JLINK) $(OUTPUT_PATH)pin-reset.jlink
 
+ifeq ($(PROGRAMMER),stlinkv2)
+reset: reset.stlinkv2
+else
 reset: reset.jlink
 	$(MAKE_BUILD_FOLDER)
 	$(JLINK) $(OUTPUT_PATH)reset.jlink
+endif
 
 reset.jlink:
 	$(MAKE_BUILD_FOLDER)
 	printf "r\ng\nexit\n" > $(OUTPUT_PATH)reset.jlink
 
+reset.stlinkv2:
+	$(MAKE_BUILD_FOLDER)
+	$(OPENOCD) -c init -c 'reset' -c shutdown
+
+ifeq ($(PROGRAMMER),stlinkv2)
+erase-all: erase-all.stlinkv2
+else
 erase-all: erase-all.jlink
 	$(MAKE_BUILD_FOLDER)
 	$(JLINK) $(OUTPUT_PATH)erase-all.jlink
+endif
 
 erase-all.jlink:
 	# Write to NVMC to enable erase, do erase all, wait for completion. reset
 	$(MAKE_BUILD_FOLDER)
 	printf "w4 4001e504 2\nw4 4001e50c 1\nsleep 100\nr\nexit\n" > $(OUTPUT_PATH)erase-all.jlink
 
+erase-all.stlinkv2:
+	$(MAKE_BUILD_FOLDER)
+	$(OPENOCD) -c init -c 'reset halt' -c 'nrf51 mass_erase' -c 'reset' -c shutdown
+
 from-scratch: all flash.jlink flash-softdevice
 	$(MAKE_BUILD_FOLDER)
 	$(JLINK) $(OUTPUT_PATH)flash.jlink
 
-startdebug: debug-gdbinit
+ifeq ($(PROGRAMMER),stlinkv2)
+startdebug: startdebug.stlinkv2
+else
+startdebug: startdebug.jlink
+endif
+
+startdebug.jlink: debug-gdbinit.jlink
 	$(TERMINAL) "$(JLINKGDBSERVER) -port $(GDB_PORT_NUMBER)"
 	sleep 1
 	$(TERMINAL) "$(GDB) $(ELF)"
 
+startdebug.stlinkv2: debug-gdbinit.stlinkv2
+	$(GDB) $(ELF)
+
 startrtt:
 	$(TERMINAL) "JLinkExe -device nrf51822 -if swd -speed 1000 -AutoConnect 1"
 	sleep 1
 	$(TERMINAL) "$(JLINKRTTCLIENT)"
 
-debug-gdbinit:
+debug-gdbinit.jlink:
 	printf "target remote localhost:$(GDB_PORT_NUMBER)\nload\nmon reset\nbreak main\n" > .gdbinit
 
+debug-gdbinit.stlinkv2:
+	printf "target remote | $(OPENOCD) -c 'gdb_port pipe; log_output openocd.log'" > .gdbinit
+
+
 .PHONY: flash flash-softdevice erase-all startdebug test-softdevice flash.jlink