This guide will walk you through programming the CC2640 (SimpleLink ultra-low power wireless MCU for Bluetooth Low Energy) from Texas Instruments. This will also work for any module that is based on this MCU, such as the SaBLE-x from LS Research. For the example provided in this post, the inexpensive SimpleLink SensorTag Debugger DevPack ($15) will program our SaBLE-x breakout board .
The SensorTag Debugger DevPack (the programmer) has the standard smaller pitch ARM JTAG connector, as does the SaBLE-x breakout board. We must now correctly determine the orientation of the programmer, since pin 1 is not marked on the programmer.
In this situation, one naturally looks towards the documentation. As is often the case, the documentation can be very difficult to navigate and the information you need is not readily available. The correct documentation can almost always be found with a bit of tenacity and experience. In this case, the following documents from TI were helpful (or not so helpful) in determining the correct orientation of the programmer: