The MSP430 is a Texas Instruments low-power microcontroller family.

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UART Polling vs Interrupt

I have two UART ports on an MSP430 that need to stream data between a Host Controller (Freescale IMX6) and potential devices ...
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1answer
80 views

What happens when we write delay instruction twice continuously in an MSP430?

What happens when we write a delay instruction twice continuously in MSP430 code as follows: ...
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1answer
126 views

Internal temperature sensor for the MSP430 - energia

I'm trying to use the internal temperature sensor for the MSP430G2553 with energia (a branch of arduino for the TI MSP430 microcontrollers) but to I'm having trouble calibrating it. The solution I've ...
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1answer
66 views

Moving SP and PC using inline assembly in MPS430-GCC

I am writing a simple task scheduler for my MSP430F5529 USB launchpad. I need to update stack pointer(SP), then enable interrupts and then update program counter (PC). But I am getting an error with ...
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3answers
117 views

Good flag practices - energia msp430

I'm making a program for the msp430 using energia launchpad, the first code that I had is the following: ...
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1answer
66 views

Power consumption - Energia Launchpad

I'm working with energia for the launchpad 430 and have a rather specific question to make: is example A the equivalent in power consumption has example B, or is it that B drains more power? Thank ...
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2answers
99 views

MSP430 blinking led

I started using MSP430 Launchpad and as I was examining the code for blinking a led I found something odd. The code is this and is a ready example: ...
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0answers
65 views

Reading Manchester coded data from MSP430 to Android (samsung S3)

I am trying to send digital data from MSP430 to Android phone (Samsung S3) via Mic (headphone jack). I have checked the encoding from MSP430 on oscilloscope and it looks fine [Square wave] with a ...
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3answers
85 views

Why is MSP430's Stack Poniter(SP) always alligned to even address?

While I was reading through the MSP430's User's guide, I came to know that its stack pointer is alligned to even address. (Read Pg.189 of http://www.ti.com/lit/ug/slau208m/slau208m.pdf) Why is it so ...
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1answer
72 views

Launchpad MSP430 incremental blink with button

I'm new with this. I'm trying to make an incremental blinking LED with every time that I push the button, I'm using Energia and Launchpad MSP430, I don't know if somebody can give a example code to do ...
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2answers
212 views

How do professionals deal with prototyping?

Prototyping with real components is very time consuming. In order to save time, I have been looking for a digital circuit simulator, compatible with the MSP430, with no success. How do professionals ...
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0answers
127 views

Lots of solder around microcontroller pins--causing issues?

My microcontroller (MSP430G2553) is in a 20 pin socket setting so I did not solder while the microcontroller was in the socket (there was no heat damage). But I did add a lot of solder to at least 6 ...
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0answers
85 views

MSP430 GPIO behaviour on power off

I have a simple circuit which contains an MSP430 connected to a DAC8551. I'm using PORT1 so have implemented a bit-banging approach instead of using the USCI module (bad, I know). I've noticed a ...
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1answer
85 views

push button issues for MSP430g2553

My circuit is the schematic above, I just recently added the push button in the bottom left (P2.3) and my code goes to crap and I'm receiving/sending junk over UART when P2.3 is no where near the ...
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1answer
104 views

driving 4 RGB LEDs with PWM using MSP430

I have a project in which I must drive 4 RGB LEDs using PWM directly from the MSP430. They are separated in two groups of 2 LEDs (1 PWM connection controls one color element of two LEDs) which means I ...
4
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1answer
111 views

What is Analog and Digital supply voltage

Currently I have start working on MSP430 Controller and found that there are 4 pins for the supply voltage viz. AVcc, DVcc, AVss, DVss. These are used as analog supply voltage and Digital supply ...
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2answers
72 views

How to make AC signal's level proper for MCU input?

I'm working on a frequency counter coursework, where I use MSP430 MCU. I have to measure signals with specifications: frequency from 0.1 Hz to 1 MHz and signal's amplitude from 0.1V to 10V. The ...
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3answers
82 views

How to program Atmega 328P - PU

I want to upload lines of code ( with c files, not sketches ). But sadly I don't own any programmers and only posses the Arduino UNO board. Since I want to program in c code, I can't make used the ...
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1answer
309 views

How to make a digital clock using MSP430G2553?

I want to make a digital wall-clock as a small electronics project. Since I am very new to this stuff I want to just try to imitate some already completed projects so that I can learn from them. I ...
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1answer
59 views

Connections on RN42 v2

So a few months back, I asked about how to connect a RN42. I finally built the circuit, which is basically a copy of the schematics on the right side of this pdf: ...
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1answer
163 views

SD card access slows down with many files

I'm working on a data logger application using a MSP430F5529 running at 2 MHz and a SD card using FatFs. The SPI interface is already running at maximum frequency. However I am seeing very erratic ...
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2answers
121 views

Can I program a MSP430553 IC using the TIVA C development board?

I have a few MSP430G2553 ICs. Can TIVA C board (EK-TM4C123GXL) used to program the ICs as I need to buy it for a online class I am about to take ???? If yes, please specify the method to be followed.
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101 views

Interfacing two devices using transistors

I have a microcontroller and a small video/still "spy" camera (like these) that came in a case disguising it as a car remote. The microcontroller is a TI MSP430 value line model, though I could use an ...
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1answer
81 views

Implementing Multichannel ADC conversion and transfer data to PC [closed]

I have developed a system using the TI MSP430 G2553 that accomplishes analog to digital conversion of multiple sensors simultaneously. So here is the question: Can someone suggest me how to ...
4
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1answer
78 views

Changing voltage levels from 5V to 3.3 V [duplicate]

I am asking some basic questions here. I have a sensor whose voltage specs are 0-5V and I have to interface this with my TI MSP430's ADC, whose voltage Vcc is 3.3V . For this I have to convert the ...
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2answers
183 views

MSP430: how to let the timer ISR interrupt the Serial RX ISR?

I am working on a MSP430 connected to the PC via serial. The MSP430 also communicates with some other boards using a bit-banged serial interface. I'm using the timer peripheral to bit bang the serial, ...
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1answer
78 views

Programming CC430F5137 using another microcontroller

I have a CC430F5137 and the board schematic all ready for my application to that requires capturing data over bluetooth. I wish to program the CC430F5137 using another platform except the conventional ...
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1answer
177 views

Transfering my arduino/TI-MSP430 Launchpad/Energia skills to real world projects and C

I'm learning electronics/microcontroller programming through TI-MSP430 Launchpad(Energia) and Arduino. Both are based on wiring framework, and very good place to start for a beginner like me. Now as ...
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1answer
137 views

MPS430 Launchpad Keypad

I tried to use my MSP430G2553 launchpad with a keypad using http://www.pjrc.com/teensy/td_libs_Keypad.html http://bildr.org/2011/05/arduino-keypad/ ...
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147 views

MSP430 launchpad LCD problem

I am trying to interface my MSP430G2553 launchpad with an LCD but my characters look weird. I am using http://www.fibidi.com/arduino-lcd-16x2-characters/ with one potentiometer , with changing ports ...
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2answers
130 views

Launchpad blink with button

I am trying to make LED in MSP430G2 Launchpad keep blinking / off with button like Switch example (http://www.arduino.cc/en/Tutorial/Switch) in Arduino/Energia but I seem to miss something stupid and ...
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1answer
91 views

How can see the difference between 8bit and 16 bit controller using a program [closed]

How can see the difference between 8bit and 16 bit controller using a program??say the difference between an atmega8 and msp430..Can i explain this using a program and show this using a program.
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1answer
395 views

Is it possible to use msp430 with keyboard + LCD?

I'm trying to do an assignment for my class which requires me to use a keyboard as input through a microcontroller to a LCD screen, nothing fancy , I just need to show that when I press characters on ...
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1answer
121 views

MSP430 Coding, Can I Place an Interrupt Vector Inside a Function?

As the title said, I am trying to see if an Interrupt Vector can be embedded inside a function? I am using IAR, but gcc or ccs would work too. I don't see it done in any code online. Example: ...
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1answer
82 views

Connections on RN42

I have been using a SparkFun BlueSMiRF module with a MSP430G2553 chip on a breadboard. I want to create a custom circuit to have everything on one board. Here are a few questions before I go about ...
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1answer
116 views

Parameters to compare microcontrollers for low power consumption?

How do I select a microcontroller with low power consumption? -for MSP430 series we can compare using \$\mu\$A/MHz at active state. Similarly how to compare this with other MCU's like PIC and STM ...
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3answers
160 views

MSP430 Bluetooth interfering with USB module

I have a simple project that basically sends and receives data through USB connection and Bluetooth. Both the USB module and the BT module share the same UART RX (P1.2) and TX (P1.1) ports. The ...
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28 views

Circuit design for DC motor control (micro metal gear motor) [duplicate]

I have a project about controlling a metal gear motor using a microcontroller MSP430 launchpad. I'm going to use 50:1 gear ration motor with these specifications: Gear ratio: 50:1 Free-run speed @ ...
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0answers
129 views

External Sensor interfaced with MSP430

I have interfaced a humidity sensor with MSP430F2274 on pin P2_2 (Kit CC2530 ZNP) and using the following code to read the output voltage from the sensor. But it doesn't seem to be working. I am ...
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2answers
247 views

Is it safe to connect two MCU pins directly to each other?

I am working on an MSP430 project that requires me to route the output of one peripheral into the input of another peripheral. Thus, I have two MCU pins connected directly to each other. This looks ...
2
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1answer
110 views

How to Calculate Basic Cycles in MSP430?

Hey all I am fairly new with the MSP430 and I have begun using it to do very simple projects and I am trying to keep track of how many cycles I use within my program, and I have a two simple questions ...
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1answer
273 views

msp430 using Button as switch

I am trying to do this(http://www.arduino.cc/en/Tutorial/Switch) without using any external parts because I was able to use button example from same site with this code: http://en.textsave.org/VjL) ...
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28 views

Trigger button press via mspdebug

I am experimenting with a MSP430 (inside a eZ430 Chronos), and I’d like to debug my code while the device is attached to the USB debug board. It seems that the buttons do not work while the device in ...
3
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1answer
146 views

Can flash memory be used in place of RAM in microcontroller applications?

In my application I'm using a MSP430, however I need to buffer 11kB of data from a UART connection. Obviously the 512B of RAM available is not enough to do this, however the MSP430 has 16kB of flash ...
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1answer
66 views

Where is the P3 pin on the msp430?

I'm new to microcontrollers and I'm a little confused about the P3 pin on the msp430g2553. In this tutorial it mentions setting ...
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1answer
202 views

Does MSP430 and AVR have internal pull-up on UART's RXD line?

Suppose a device with MSP430 or AVR microcontroller and floating UART lines (e.g. to external connector). Need I add an external pull-up to the RXD line?
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How do you implement timers on MSP 430 5528 using the help of an implementation for MSP 430x26x?

I have followed GINA Mote instructions from this page: https://openwsn.atlassian.net/wiki/display/OW/IAR and I was able to successfully able to build and run 01bsp_radio.c transmit project. I ...
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1answer
142 views

MSP430 ADC least significant bits always 1

I have an MSP430F2618 with built in 12-bit ADC, but for some reason the values it returns always end with the 2 least significant bits set to 1, except when it zeroes out. In other words, the counts ...
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95 views

using pf_lseek() in petitFAT file system

I'm trying to use pf_lseek() from the petitFAT library, but no matter what number I put in as the input, my data doesn't offset. Here is how I am using it: ...
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1answer
273 views

Petit FAT file system with a MSP430

Is there a way of clearing a file in the petitFAT format? What I came up with is this: ...