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Questions tagged [texas-instruments]

Texas Instruments Inc. (TI) is an American company that designs and makes semiconductors, which it sells to electronics designers and manufacturers globally.

Texas Instruments Inc. (TI) is an American company that designs and makes semiconductors, which it sells to electronics designers and manufacturers globally.
Headquartered at Dallas, Texas, United States, TI is the third largest manufacturer of semiconductors worldwide after Intel and Samsung, the second largest supplier of chips for cellular handsets after Qualcomm, and the largest producer of digital signal processors (DSPs) and analog semiconductors, among a wide range of other semiconductor products, including calculators, microcontrollers and multi-core processors.
Texas Instruments is among the Top 20 Semiconductor producing companies in the world.
Texas Instruments was founded in 1951.

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Understanding Two's complement to float(Texas Instruments Sensor Tag)

I found some sample code to extract temperature from the Texas Instruments Sensor Tag on github: https://github.com/msaunby/ble-sensor-pi/blob/master/sensortag/sensor_calcs.py I don't understand what the following code does: tosigned = lambda n:…
MeesterPatat
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arm-none-eabi-ld malloc undefined reference

I'm working on some code for Texas Instruments' Tiva C Series TMC123G Launchpad (an ARM Cortex M4 MCU board), my code doesn't compile due to a undefined reference to 'malloc'. startup_gcc.c and project.ld are part of TivaWare. Equivalent files can…
Jakob Klepp
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SensorTag, iBeacon, Compiled firmware doesn't work

Followed the instruction at http://processors.wiki.ti.com/index.php/SensorTag_with_iBeacon. The iBeacon-enabled firmware was created with IAR and updated with OAD from iPhone but SensorTag stopped working after the update. No advertising, no LED…
JVI
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Can I Configure GPIO pins after disabling high-impedance mode?

I have the following sample program for the MSP430 and I wish to rearrange it so that the line PM5CTL0 &= ~LOCKLPM5; comes before P2SEL1 |= BIT0 | BIT1;. Would there be a problem if I did so? I. e. would there be a problem if I configure the GPIO…
necromancer
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SensorTag, detect pressed buttons using gatttool

I would like to detect if a botton is pushed on my SensorTag using the gatttool, but I'm not able to do that. In http://processors.wiki.ti.com/index.php/SensorTag_User_Guide TI reports that in order to read the pressed buttons, you should: 1)…
Diegolo
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How to change SensorTag name?

I am looking for a way to change SensorTag name. Apparently TI App Store application capable to do so as it changes name of SensorTag after first connect so it is become "TI BLE Sensor Tag".
Nikita Leonov
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TI CC2530 - Convert a float to uint8[] for sending and then convert back to float in reception

I need to send some float numbers between some Texas Instrument CC2530 nodes. This architecture can only send an array of uint8. What I already tried to do was to assign to an uint8 pointer the float pointer with a cast. Then I send these bytes and…
Alex Pacini
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MSP430 and RFM22

i need help! i have a TI msp-exp430g2 launchpad and a RFM22B and i need them to communicate with each other and i have no idea how to. after along time i came up with the code below to send data to the RFM22. i have an oscilloscope connected to the…
Ofer Orgal
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TelosB Mote with MSP430 F1161 processor and FreeRTOS With Eclipse IDE errors troubleshooting

I spent lot of my time in basic setup. I do not know why it is so complicated in making a basic program to compile with FreeRTOS If there is any expert in this field please help me to fix these errors. I dont get an idea how to explain my situation,…
Anil
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git check out arago-project throwing protocol error

I am trying to checkout arago-project's oe-layersetup using below command. #git clone git://arago-project.org/git/projects/oe-layersetup.git It is throwing error like "fatal: protocol error: bad line length character: Prox" But I can able to…
Pala
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Convert IEEE float to TI TMS320C30 32bits float in python

I need to convert a python float to a TI DSP TMS320C30 float representation, following this convention: http://www.ti.com/lit/an/spra400/spra400.pdf#page=13 I've tried a few things, but I can't seem to wrap my head around the proposed algorithm. I…
Gui13
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arm controller lm3s8962

Hi, I am new to embedded coding. I am working on ARM lm3s8962 controller. Can anyone explain to me what the code below is doing? It is implementing bit banging but I want to know how it is implementing…
user2159417
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Creating a custom TI 84 plus graphing calculator Operating System (OS)

I am starting a project in which I will be making a new/editing the standard TI 84 Plus Calculator OS. I am planning on only changing a few things that slow it down and are not neccesarry for me. (EX: Asymptote checking while graphing, "PrettyPrint"…
olijake
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Segmentation fault error after execution of c6accel sample

I use OMAP-L138 Exp Kit. First please look at my U-boot properties. There they are: U-Boot > printenv baudrate=115200 autoload=no bootcmd=run netboot bootfile=uImage-da850-omapl138-evm.bin filesize=204104 …
Myosotis
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TI-84 random number generation on a computer

How does the TI-84 randInt function generate random numbers? I would like to replicate this PRNG on my computer so I can get some larger sample sizes, but I'm not sure how. Copying numbers 5 at a time from the calculator isn't an option. Running OS…
eric.mitchell
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