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Found 2 results

  1. Hello, Problem Statement: I am trying to read in a square waveform from a function generator using the MSP430G2553 and whenever there is a falling edge the chip has to send out a ping to my laptop (I am using serial communication here for lack of knowledge on a better way). I then have to use MATLAB to read this "ping" coming from the MSP430G2553 and trigger another device. By reviewing some basics on serial communication and examples on the Energia documentation, I am able to generate a ping solely from the MSP430 chip (without any input from the function generator) and cause MATLAB to read it. However I am a little lost on two parts of the problem. 1) How can I make the MSP430 accept the waveform that is continuously generated from the function generator (which is a TTL) and then output the necessary to the laptop. In other words, how can I interface the MSP430 launchpad to the function generator so that I can have a continuous input from the generator into the launchpad and then send the "ping" for every falling edge that is detected? I have zero experience in serial communication and the very little I learnt from reading hasn't quite helped. 2) How can I make MATLAB continously look for the "ping" from the MSP430 chip. (irrelevant to this forum may be? I can work on figuring this out myself.) Any help will be greatly appreciated.
  2. Hello, I found some devices which should allow me to connect naked MSP430G2553 chip to PC over USB. But here is one problem I don't really understand. I found devices with FTDI chip (I know it's a brand name) and devices which I found under "TTL UART" or "USB to TTL". Here is link to the FTDI one: https://www.sparkfun.com/products/9873 Here is link to the TTL one: http://dx.com/p/usb-2-0-to-ttl-uart-5-pin-cp2102-module-serial-converter-blue-152317 So, my question is: is there any difference between those two? Because there is huge difference in price. Thanks for replies
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