Rockets4Kids shares his simple hack to swap the serial lines on the Launchpad when a 20 pin MSP430G2553 controller is used. For the G2211 and the G2231, any pin can be configured to the respective serial lines, as the serial code bitbangs the selected pins. However in the case of the G2553, if you wish to use the onboard hardware UART, the RX/TX pins are swapped and do not match the Launchpad’s silkscreen. Rockets4Kids hack is a safe way to perform the swap without causing any damage.
This can also be easily done with jumper cables. If you already knew this, good for you. If not, you probably have been scratching your head as to why your perfectly fine UART code was not working. So treat this as a PSA. Thanks Rocket4Kids.
Thanks for the head’s up. i would never have thought of that.