<img src="https://www.olimex.com/Products/MSP430/Header/_resources/MSP430-Hxxx-sch.gif" alt="Schematics of the Olimex MSP430-H1611 Board" style="max-width: 100%;">
## Pinout
The 64 pins on the edges of the PCB are connected to the corresponding MCU pins.
Hence, the following pinout of the naked MSP430-F1611 MCU chip matches the
pinout of the header board:
<img src="https://github.com/maribu/images/raw/master/MSP430F1611%20Pinout.svg" alt="Pinout of the naked MSP430-F1611 MCU" style="width: 512px; max-width: 100%;">
## Flashing RIOT
<img src="https://github.com/maribu/images/raw/master/Olimex%20MSP430-H1611%20with%20Debugger.jpeg" alt="Photo of Olimex MSP430-H1611 Board connected to a JTAG Debugger" style="width: 512px; max-width: 100%;">
Connect the board to a JTAG debugger supported by
[mspdebug](https://dlbeer.co.nz/mspdebug/); by default the
Olimex MSP430-JTAG-Tiny (as shown in the picture above) is assumed, which is
among the less expensive options.
@note If you are not using the Olimex MSP430-JTAG-Tiny (or a compatible
programmer), set `MSPDEBUG_PROGRAMMER` to the correct value via
an environment variable or as parameter to make. E.g. use
`make BOARD=olimex-msp430-h1611 MSPDEBUG_PROGRAMMER=bus-pirate` to
flash using the bus pirate.
@warning You can power the board via the JTAG programmer by placing a
jumper at `P_IN`. However, the JTAG programmer will only be able
to provide a limited current. You may want to disconnect the
header board from devices consuming a lot of power prior to
flashing.
@warning If the board is powered externally, make sure to place the jumper
in `P_OUT` position, not in `P_IN` position.
@warning A jumper in `P_OUT` is mutually exclusive to a jumper in `P_IN`.
