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Found 7 results

  1. I'm porting my compact Lisp interpreter, uLisp, to the MSP430FR5994 LaunchPad, and would like to provide SD card support. I've already got code working with AVR chips using the Arduino SD library. Is there a port of this to Energia, or something similar? Thanks, David
  2. Hello, How to define differential inputs in Energia for internal ADC of MSP430FR5994? Best regards, Adi
  3. SRAM decay and reset

    Hi all, I have a potentially odd question. I am using and MSP430FR5994 board and would like to measure SRAM decay. However, whenever I toggle the system from on to off and then on again the locations in SRAM that I am reading are full of random of values. While I would expect random values, I would not expect them at the timescales that I have the system off. The system is off for no more than 10ms. According to https://spqr.eecs.umich.edu/papers/rahmati-usenix12.pdf that should be short enough where I get very little decay. I should also specify that the random values seem to be consistent across runs; what I mean is they don't really seem random at all since the values appear each time. Some Questions: 1. Could this have something to with my SRAM controller settings? I do not set anything in this regard. 2. Could this have something to do with the way I am powering the board? Probably out of the scope of this forum, but I do have a capacitor, so even though I say "turn off," the voltage supplied to the board usually does not reach zero. Cheers!
  4. MSP430 and I2C

    I have been trying to use a simple I2C sensor (LM75) with a MSP430FR5994. I find there are two pin maps. One at Energia (http://energia.nu/wordpress/wp-content/uploads/2016/11/Capture-2016-11-30-à-15.10.44.png) and one at TI directly (http://www.ti.com/lit/ml/slau677/slau677.pdf) on page 2. I have tried using I2C (1) as indicated at in the TI reference, and I have tried I2C (2) as indiicated in the Energia reference. neither one work. I can use an Arduino to access the sensor so I have some hope that this might work. What pins do I need to use to use I2C? Is there a library call to specify which I2C pins to use? By the way, I can connect to the board and load the blink sample, and I can do serial communication, so board connectivity is OK, I2C is not. Gerald
  5. Are there any plans to add support to Energia for the new MSP430FR5994 LaunchPad? It has a really nice specification including 256 KB FRAM, 8 KB SRAM, a maths accelerator, and an on-board micro SD card. It looks like an ideal platform for my small Lisp interpreter, uLisp.
  6. Hi, TI has a new launchpad MSP430FR5994 LaunchPad Development Kit based on the MSP430FR5994. The new controller is in "Preview" status , but looks interesting -- 256KB FRAM + 8KB RAM + a Low-Energy Accelerator for Vector Math Operations ( TI claims 35x Faster Than ARM Cortex-M0+ Core for 256-Point Complex FFT ). Check the app note Benchmarking the Signal Processing Capabilities of the Low-Energy Accelerator (Rev. A) for details. The launchpad itself is interesting as it has an on-board micro SD card and super capacitor. Has any one got hands on experience with this one? I was thinking of getting one for a data-logging application, 256KB FRAM + SD card combo is very much tempting. Would like to hear from you guys , has TI finally going in the right direction, as far as MSP430 is concerned, with the LEA in the fight against ARM?
  7. Looks like TI have launched a new part, 256KB FRAM and 4 UART's a dream for me. Is Energia support available at launch? Happy to help out if not. http://www.ti.com/tool/msp-exp430fr5994 Great news or a very cruel April fool!
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