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  1. I am trying to detect the width of a pulse signal (that should be anywhere from 1ms to 20ms wide) using two ISRs on the MSP430G2553. One ISR is triggered by the rising edge, and the other by the falling edge. The first ISR reads micros() and stores the value in a variable called Time1. The second ISR reads micros() and stores the value in a variable called Time2. The pulse width of the signal is equal to Time2-Time1. The problem is, Time1 and Time2 always end up being equal, even though they are read in two different ISRs on two separate signal edges-- this should be impossible. Any
  2. LM Flash Programmer from TI started giving me error messages says ** ERROR **: unable to connect to target Target is Stellaris Launchpad I had used the program successfully some time ago. Code Composer Studio version 5 can reprogram the launchpad. Thought I remembered seeing something about this problem, but can't seem to find it now. Any suggestions? Build 923 of LM Flash Config is Stellaris Development Board (also tried a few others). OS is Win XP Has drivers for the board Board shows up in devices (ICDI JTAG, DFU) Thanks
  3. I was wondering, does anybody know of a good msp430 compiler like IAR for mobile devices? If not, I have some ideas if anybody is up for making one. Physically connecting to the phone is out of the question, so it would have to be bluetooth. An msp (preprogrammed) with a bluetooth transceiver may just be all that's needed to program another msp via spi-bi-wire, and possibly throw in an rx/tx port to transfer data back through the Bluetooth, just like the launchpad does with USB. Just tossing ideas out.
  4. Hello, I guess there is no TI Launchpad component in Fritzing software.. I know that svg file of launchpad has been made. http://www.43oh.com/2011/07/launchpad-svg-for-fritzing/ However does anyone know how to use this svg in Fritzing? Thanks, Sirri edit: No one is using this good free program ?? : /
  5. I'm trying to build a distance sensor using an IR Led, and a TSOP receiver that is run by my stellaris launchpad. However, I am not sure how to produce the 38KHz that is needed to drive the transmitter, and I'm unsure about how to run the transmitter, and read the receiver at the same time. Any help is appreciated!
  6. The same question is posted on reddit here: http://redd.it/18bkdl We are meeting with our project sponsors tonight and would love to have some kind of answer as to what's going on with our power draw. We are using an MSP430 Launchpad to develop a small project to be powered by a solar cell. Eventually we will have a single hardware interrupt, and a 30 Hz counter interrupt to update an LCD. We have estimated our power budget to be around 20 micro Watts. Oddly, with the software I have written and provided below, we are getting around 30 micro amps at 2.2V when we separate the MSP fro
  7. My name is Ivan and I am a 12 year old kid from Canada. I just ordered a Launchpad and a Terminal booster pack. I downloaded the code and imported it into CCS. When ever I try to debug on the Launchpad, it says "Error Connecting to target". I tried connecting to 2 different computers both running different versions of Windows. Could any one help out please? Thanks, Ivan
  8. I bought some addressable RGB Leds from Dealextreme and instead of the expected WS2801 chip, they came with TLS3008 drivers (8bit control for each colour, single wire, different protocol from WS2811 too). It took some time with the osciloscope to get the timing right but this now works perfect. This is in C rahter than assembly but I can get a decent update rate. I do not work with the full 50 Leds as there is not enough RAM in the chip I use (2231) but I tried looping the code to work with the full length, that worked ok except on one set of Leds which was sometimes lagging, I think that thi
  9. Hi, Thanks to the tips on 43oh.com I just managed to use my launchpad to program a 2553 on a breadboard. My code deployed fine and ran without issues, but I noticed something slightly different when I was finished testing. The chip stopped running the code as soon as I terminated the debug session. Normally, when the debugger is connected to a chip on the launchpad's emulation section, terminating just detaches the debugger. Assuming the debugger wasn't paused or on a breakpoint the chip continues to run the code uploaded to it. Could I have done something on my breadboard that
  10. look at the photo. do you think it is launchpad powered? : )
  11. Hello everyone, I am an absolute newbie to programming with the msp430. I am looking through tutorials as to understand more about the launchpad and what it will take to accomplish what I want to do. I have done all of the basic tutorials like "blinking the led" and whatnot. I will run down exactly what is going on. At the moment I have a launchpad(2553) at home with me now and a brand new cc4000-tc6000 gps module kit. Right now, I am trying to get my Launchpad talking with the cc4000 module. I have looked into the user experience code, which is made for the MSP430F5529 Experimenter
  12. Hi all well I got a problem with my Serial comunication, when I conect my launchpad with the jumpers in the default (software uart position) parallel like: || || || || almost everything works ok, i can programm my launchpad with energia I can see the Serial port is right But when i try to test the serial comunication with de serial monitor it can not send anything or recieve. then I desconect and change the jumpers for a Hardware UART like: = || || || then i conect my launchpad and i can not see my serialport name on energia and can not open the serial monitor. Im work
  13. Hello MSP430 coders once again i am working on the latest thing such as take input from the Hyper terminal or Putty, and display it in jhd162a (16x2 display) via MSP430G2231 I successfully finished 1. UART with Hyper-terminal 2. Displaying String to JHD162A the problem i am facing in g2231 is .. i am able to print String only like .............taking example printf("Hello this is launchpad"); but i want to make it print like int i = 0; for(i=o;i<=200;i++) ( printf("The number is : %d ", i); ) i am giving you scenario so i take the printf Example ..
  14. I'm new to 43oh, but I've read threads here a number of times and it has been a great reference. I wanted my own application board with a built-in programmer, so I designed the application board, and used the launchpad schematics (v1.4, I believe) as the programmer. I have printed the board and populated it. I've been looking around, and I am not actually sure how to program the firmware onto the board. I know that TI has its "firmware updater," but I think this requires that the board already has firmware loaded onto it. The programming portion of the launchpads have a programmer MSP
  15. Hi all! Yesterday I finished with my little project, which was to play ring-tones in rtttl-format (Ring-Tone Text Transfer Language) with MSP430G2231. I thought that some of you might be interested about the project and about the code. Code is "built" from arduino sketch which involves Tone Library and the sketch acts as a interpreter for the rtttl "code", but also the code is partly made of 'msp430 LaunchPad Music' made by Bob Somers. So this is a kind of a ported code. Here's how it works. Main part of the rtttl-player (as the CCS project is named) is the play_rtttl(*song) functi
  16. Hi everyone, I wanted to connect a MSP430 to an Android device. In fact, my idea was to use the MSP430 launchpad as a low-cost GPIO board for an Android tablet. I did a little research, and first thought on the audio port for the communication ( http://robots-everywhere.com/re_wiki/index.php?title=Serial_on_Android_using_the_audio_port ) but then I remembered that the tablet supported USB OTG. So, I compiled the CDC_ACM module for the (Allwinner A10 based) tablet in order to emulate serial port over USB. Then, in the MSP430 Launchpad side, I needed a lib for using the serial port. I fo
  17. hi, can you give a little example about the usage of shift registers by using energia? if you can check the picture i have upload, i want to enable one pin > and send e 4igits for each clock cycle- specifically thanks, sirri
  18. Hello, I have few questions about launchpad in general; 1-The internal thermometer is a seperate chip on launchpad or a feature in 2553 chip? 2-Does internal clock works stand alone (apart from launchpad) ? 3-Can we supply msp430xx chip standalone with a 3V battery cell? (I can't find LM1086 3.3V voltage regulator in my city) 4- What is the priority order while coding (energia) among libraries, functions, main code ? Thanks in advance, Sirri
  19. All, I have designed and am in the process f ordering an adapter card that will let me use my old 3.3v arduino shields with my TI Sellaris LM4F Launchpad. There are no hard connections beween the two sides so you can wire pins as you need. This will enable the user to use multiple shields with the Launchpad event it the shield signals conflict.This is really usefull with the SeeedStudion 2.8" TFT/Touch V 1.0 from Radio Shack which uses all but 4 pins. The shield will be available at: Batch PCB Marketplace: https://www.batchpcb.com/pcbs/102355 from Sparkfun. I have attached a p
  20. Hello, After some reading from master's tutorials i have made my 4 digit, 7segment Led display, working with MSP430, I have used array definitions for digits and segments. Also i wrapped that within a function so that we can control the number and the digit we want to display. Probably code can be improved a lot, but this is i could do for now. Recommendations are welcomed. And i will be glad if it helps for very beginner Launchpaders )) PS: It is working allll parallel. i have used 7 output pins for segments and 4 output pins for the digits.. int segA = P1_3; int segB = P1_4; int s
  21. A Retro Style Basic Computer Description The EZ430trainer system turns the low-cost TI LaunchPad into a microcontroller trainer via simple hardware and software enrichments. The EZ430trainer is made up of a . TI LaunchPad, w/ msp430g2553 mcu . A "Paradiso UI Shield", adding basic I/O capabilites. . A "Eztrainer Monitor" firmware, providing monitor and assembler capabilites. The intention of the EZ430trainer is to bring in a "low-cost" computer training system that resembles the 1st generation hobby based microprocessor syste
  22. I am thinking of using a Stellaris Launchpad (LM4F120XL) as a robot controller. If I had something like this (http://www.pololu.com/catalog/product/1551) how would I go about interfacing with the quadrature encoders? This TI webpage says "Advanced motion control capability, with up to 16 PWM outputs and two quadrature encoder interfaces" but I cannot find the terms "quadrature encoder" or "QEI" in the Launchpad manual. Am I going to need to learn the gritty details of quadrature encoding and write my own C interface? I am very new to all this, so a gentle shove in the right direction would
  23. Basic analogRead function doesn't seem working.. I am using Energia as a compiler. I am trying the minimum configuration. I am getting a value but this value doesn't change with potentiometer. I have even tried to ground the signal (to see if it is Zero) but nothing has changed.. What might be wrong? thanks .
  24. Found a french blog with a launchpad (and Energia) flavor to it. A couple of different write ups, from simple button tutorials to adc and lcd, as well as motor control. Google Translate works well enough for english. French: http://electroniquea...label/Launchpad Translated: http://translate.goo...-KjLMthQ65c63Vw Most interesting one I saw was a simple little midi project. Plays F
  25. This is a prototype of a magnetic sensor BoosterPack for the TI MSP430 Launchpad. http://www.youtube.com/watch?v=whgsB5hb-Pk The board has 3 Hall-effect magnetic sensors that sense a magnetic filed in the z-axis to the sensor. The BoosterPack has a latched output sensor (on/off by changing magnetic field direction), unlatched output sensor (on/off by changing magnitude of magnetic field), and analog output sensor (output follows strength of magnetic field). The sensor outputs are connected to analog input pins of the MSP430 LaunchPad. 10 LEDs are connected to digital output pins of t
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