Finish hardware and add programming instructions

Programming-Debugging-the-pyboard-using-ST-Link-v2.md

@@ -32,6 +32,29 @@ In the following diagram, P1/DFU is labelled BOOT.
 
 ![pvbv11-pinout](https://micropython.org/resources/pybv11-pinout.jpg)
 
+Next, connect the following pins from the ST-Link/v2 to the pyboard. Refer to the [ST-Link/v2 User Manual](https://www.st.com/resource/en/user_manual/dm00026748.pdf).
+
+```
+ST-Link/V2        | pyboard v1.1
+----------------- | -------------
+PIN1  (VAPP)      -> 3V3
+PIN7  (TMS_SWDIO) -> PA13 (X21-2)
+PIN9  (TCK_SWCLK) -> PA14 (X20-2)
+PIN13 (TDO_SWO)   -> PB3  (X17-1) (Optional debug serial)
+PIN15 (NRST)      -> RST
+PIN20 (GND)       -> GND
+```
+
+# Programming
+
+You can now program/debug using any software that support the ST-Link/v2. One such program is [OpenOCD](http://openocd.org/).
+
+```bash
+$ openocd -f board/stm32f4discovery.cfg -c "program app.elf" -c reset -c shutdown
+```
+
+Debugging has been tested to work under CLion.
+
 # References
 
 - [Programming the STM32F4DISCOVERY using External ST-Link/v2](https://electronics.stackexchange.com/a/410840/194001)