Hello
My name is Andreas and I am from Sweden, this is my first post here :)
First of all I want to say that I am very new to microcontrollers, please bear with me. I started off by reading "MSP430 Microcontroller Basics" and then bought TI's Launchpad and read "Getting Started with the MSP430 LaunchPad". Since then I have fiddled with the Launchpad a couple of weeks doing some basic projects. Since my C coding knowledge is not very good I have been working in Energia and the "simpler" coding, not sure what it is called.
I am working on a new project where I need the MSP430 to listen to UART traffic between two devices. Basically I just need to listen for a specific string sent from device 1 to device 2.
So far I have just connected the RXD and TXD of the 2 devices I want to listen to and connected them to the Launchpads P1.1 and P1.2. I have the two pins on the launchpad set to "SW UART". The MSP430 2553 is installed on the Launchpad but with no code on it. I then open Energia and open the serial monitor. In the serial monitor I can see the string I want to fetch and the commands sent by BOTH devices. So far so good. But as soon as I put the code "Serial.begin();" (tried all baud rates) in the MSP430 not changing anything else I still can monitor the communication but just the commands sent from device 1 and not the commands sent from device 2. Also the 2 devices don't work as they should because I suppose the commands from device 2 is not reaching device 1. I know for sure that the commands from device 1 reaches device 2 though, that part works.
I can say also that I don't have any specifics on the baud rate used between the two devices but I am almost sure it is 9600. Strangely I get the same results if I set the serial monitor at 9600, 14400, 19200, 28800, 38400, 57600, or 115200. Only if I set it at 4800 the formatting becomes incorrect!
Oh my god, this got complicated for me to describe, sorry. I am new to all this.
Thanks
Best regards
Andreas