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

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Improving RF sensitivity

I'm trying to improve the range on my 433 MHz radios that are using the CC430F5137. Based on 25.3.3 in http://www.ti.com/lit/ug/slau259e/slau259e.pdf, it seems like decreasing the RX filter BW can ...
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71 views

Second interrupt dos not work in MSP430

In this project i want to control dc motor with numeric keypad. when I push a button first time, it works properly but when i push a button second or third times it does not react and it stays ...
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2answers
118 views

Landline listening

I still have a good old landline at home. But I miss the easiness of cell phones where you can just see a list of missed calls. I'm a MSP430 Launchpad hobbyist and I'm alway looking for some little ...
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47 views

How to tell CCS debugger where to start?

I am just starting with MSP430 and Code Composer Studio (CCS). I want to make a pure-assembly project. At the moment, I have a "hello world" program that does nothing but light an LED on the ...
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4answers
85 views

EEPROM I2C driver hanged during ESD test?

In our prototype , we have a I2C based EEPROM . During ESD Test(High potential spark is injected into system for a very short moment), the drivers hangs in the I2C code. Basically there are while ...
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41 views

MSP430G2231 Serial out using Energia

I am trying to read an analog signal using the Analog.Read() function and output 1 or 0 depending on the value of the analog signal. While testing using a serial monitor, I always get the symbol for ...
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77 views

Missing clock edges when using SPI on the CC430

I'm currently using the CC430F5137 and I'm having an issue with using SPI to communicate with an external flash. I'm currently using DMA to send out SPI comms using the UCSI_B module. Most of the ...
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30 views

Considerations for maximising USB MSC transfer rate on a MSP430F5529

I've started designing the second version of an SD-card based sensor logger and am going to to base it on the TI MSP430F5529 for the low power, in built USB, and wide availability of code samples. The ...
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51 views

Peculiar behaviour of code displaying button presses using MSP430

I have created a simple program in MSP430 using Energia for counting the button presses from 0 up to 9 and displaying them in a Seven Segment Display. The code including the definitions of the pins, ...
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3answers
58 views

MSP430 Launchpad connection of photoresistor and concerns regarding Launchpads protection

I am using the MSP430 Launchpad and I have a question regarding photoresistors. The thing is that when you connect a LED with a pin in Launchpad, which you have configured, as output I read that you ...
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51 views

RF signal frequency vs antenna orientation

I have two CC430s on two identical custom boards and each board has an identical 433MHz RF circuit. The boards are able to communicate with each other only when one of the two boards is placed in a ...
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42 views

MSP430 UCS - FLL/DCO Source

I'm trying to understand better the whole clock system mechanism in TI's MSP430. I understand that when doing this line of code I'm assigning REFO as the clock reference to the FLL/DCO ...
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72 views

Is it possible to measure acceleration in sports activities with an accelerometer

I've been trying to make a simple prototype capable of measuring a punch or a shot put throw with an accelerometer, but suddenly stopped working, and "locked" into a value, has I was testing it. When ...
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2answers
77 views

MSP430 Stack pointer and frame pointer behavior

While trying to analyze a simple Assembly file generated through the msp430-gcc, I stumbled upon a set of instructions that I don't understand dealing with the frame pointer and the MSP430's stack ...
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1answer
42 views

Program aborts after ISR

First I am new to this and I signed in to get some help on this problem I have been having. I have done so much googling to figure this problem out and with no luck. I am trying to capture humidity ...
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1answer
152 views

Best microcontroller for industrial applications [closed]

I have an industrial project requirement to build a device having this functionality: Store Data Send Data to Web Server Device to be placed under scorching sun Sensors - around 5 A Graphical ...
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1answer
99 views

MSP430 Timer A interrupt flags are wacko

Trying to setup a timer on my MSP430F5529 that should interrupt after approx. 2 seconds. My initial setup looks like this: ...
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142 views

Controlling LCD with MSP430 via I2C backpack PCF8574

I'm at my wits end with this at the moment. I need to interface my MSP430G2553 with the PCF8574 I2C expander in order to drive an LCD display. So far I've had not much luck at all. There is very ...
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1answer
348 views

MSP430 RAM protection

I'm looking at the user guide for the MSP430x5xx family. It says there in section 9.1 that: ...
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56 views

Setting MSP-430 toolchain in linux

Can anybody please guide procedure to setup tool-chain for MSP430 in Linux (particularly Ubuntu)? I am using MSP430 launchpad (MSP-EXP430G2), and I need to setup compiler/build tools and debugger ...
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77 views

MSP430 Low Voltage ADC Input Protection

I'm using the MSP430 SD16_A 16 bit Sigma-Delta ADC (page 843) for bipolar differential ADC measurements in a +/- 0.6V range. While the inputs can handle +3.3V, on the negative side the absolute ...
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1answer
105 views

#10269 output file exceeds code size limit

Using Code Composer Studio and MSP430F5438A I get that error when compiling, but if I randomly delete some lines of the code, it will work fine. The problem is that I have not finished yet and there ...
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331 views

History of the MSP430

This question crossed my mind today. What is the history of the MSP430? When did it start, what did it evolve from, why was it made (i.e. what goals was it trying to achieve/what technical ...
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77 views

MSP430 PWM Dead-Time

According to the internet, the MSP430 has no hardware implemented to maintain proper PWM dead-time as the PWM duty cycle is modified. Apparently (and also according to the internet) this feature can ...
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52 views

Configuring input on MSP430?

I've been trying to get 2 input push-buttons working on my MSP430 FF529. I've been successful with 1, but not the other, which leads me to think the one not working is broken, since I'm doing the ...
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213 views

MSP430F5529 & Bluetooth module data transfer over UART issue

I'm taking analog input from a sensor and feeding it to the in-built 12-bit ADC on the MSP430. The ADC code tested by itself is performing the A-D conversion correctly and outputting the values as ...
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184 views

RS485 network failing on replacing SP485 chip with MAX485

I have created an RS485 communication network as shown below. {PC}->[FT232->RS485](120 ohm)<----twisted pair(2 wires)------>(120 ohm)[RS485 -> MSP430] Here PC acts as Master and sends the data ...
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82 views

MSP430 USCI - Are the interrupt flags still active when interrupts are explicitly disabled

I am using an MSP430 USCI in SPI mode. I would like to confirm my understanding of this: If UCTXIE and UCRXIE are explicitly disabled when the interface is initialized after UCSWRST is cleared the ...
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119 views

How to blow the MSP430 security fuse

We are making a production product using the MSP430G2231 and want to keep the code a secret. I have searched online and found out that blowing the security fuse disables access to the MCU. Could ...
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995 views

3 Hz from a watch crystal

I have a stepper motor which step angle is 2 degrees. I want to display seconds using a needle attached to this stepper. The watch crystal divides nicely to produce 1Hz pulses, so every second I can ...
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57 views

Sample externally powered analog sensor with TelosB

This is a newbie question so forgive me for its simplicity I have a FIGARO TGS 2602 Air Contaminant Sensor and would like to sample its analog output using TelosB which is powered by 3V-3.6V max ...
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2answers
173 views

Where is the C API reference for the MSP430? CCS version

I see a lot of sample code and tutorials, but where is it documented that symbols (defines) such as P1OUT and P1DIR are ...
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831 views

Why do programs stop watchdog timer on MSP430?

Many sample programs for the MSP430 have their first line as: WDTCTL = WDTPW | WDTHOLD; // Stop watchdog timer Why do they do this?
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111 views

MSP430 Pin Variables

I am trying to program an MSP430FR5969 for the first time. I successfully executed and modified a program to blink one of the LEDs connected to P1.0. The relevant predefined variable is P1OUT. The ...
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385 views

Interfacing MSP430 Launchpad with OmniVision Camera Module?

I have seen that it is possible to interface an OmniVision OV2640 camera module with Ardiuno Uno. Would it be possible to interface this Camera Module with an MSP430 Launchpad board to get a video ...
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1answer
163 views

MSP430 printf function executes too slow [closed]

I try to use Sky mote (MSP430 F1611 + CC2420) to read the data from I2C sensor with 100Hz sampling frequency and write the data to serial port (USB). I tried a couple of tests and realized that the ...
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567 views

Creating operational MSP430G2553 in Proteus

I'm a bit outside of my experience level with this one. I am attempting to simulate a circuit utilizing the MSP430G2553 in Proteus 8. However, that model is not included in any of the libraries that ...
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699 views

msp430g2553, how can I get a UART baud rate higher than 9600?

I have an msp430g2553 in its launch pad. I have tried using a baud rate of 19200 with the UART and I get gibberish. From what I have found, something with the launchpad or drivers limits the UART baud ...
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167 views

Is there a way to prevent code being read from an MSP430 without blowing the fuse?

I was recently involved at a project in a small company where we had fears of someone taking the code from the master chip, an MSP430F2419, and using it for a competing product. We ended up blowing ...
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3answers
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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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151 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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1k 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
400 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
429 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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87 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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265 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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134 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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239 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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375 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 ...