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ADC12
Related Posts

  • Forum Post: MSP430 Internal Temperature ADC measurement issue...

    Don Carlson
    I am using the MSP430F1611, and I am finding reading the internal temperature (ADC internal channel 10) does not appear to be very stable. I have setup the ADC12CLK to use a 32kHz ACLK and am using sample and hold of 64 ADC12CLK cycles (SHT_4). I am reading the internal temperature ADC at a rate of 1Hz...
    on Jan 16, 2009

  • Forum Post: Re: MSP430F5438 on-chip temperature sensor

    BrandonElliott
    Please note the specs for the temperature sensor, figure 17 and Note 2 on page 62 of the datasheet . Essentially the temperature sensor can require a 1-point calibration to get a semi-accurate value, since the temp sensor can be as much as 20 degrees off initially (mentioned in Note 2). In my experience...
    on Mar 17, 2009

  • Forum Post: MSP430F5438 - ADC Setup Verify

    Alfredo
    I am attempting to use the ADC on my mspf5438 to trigger an LED at this point and later on a initiate UART communication. For now though I am trying to just light the LED. I am using the following code but the input voltage seems to be different than what I'm actually getting from conversions. My...
    on May 8, 2009

  • Forum Post: Timing Sampling of Two Analog Inputs

    Rebecca Bercich
    I'm new to PICs and have had very little experience with C++ but have been asked to program a 12-bit, 64-pin MSP-TS430PM64. I already have it sending out a square wave to two LEDs, but I need it to receive and sample two analog signals from two photodiodes while the LEDs are lit up. It's mostly...
    on Jul 7, 2009

  • Forum Post: MSP430F2419 ADC12 Internal Reference Voltage

    Yuvaraj Velumani
    Hi, I am using MSP430F2419 device which is having ADC12. I using the internal reference voltage(2.5V) and as per the design I have provided two external capacitor 10uF/10V and 0.1uF/10V across VRef+ and VRef-. Iam doing the following configuration in my code to enable internal reference, but I could...
    on Dec 2, 2009

  • Forum Post: MSP430F169 - Trigger ADC1 through timer A then send output to DAC1 (sample code please)

    James Rodgers
    Hello, I'm trying to evaluate an MSP430F169 by simply reading a value from ADC1 and writing the value to DAC1. I've tried a few different approaches but I continue to see all kinds of jitter (so I'm thinking that I'm not doing it correctly). Can someone please give me a simple peace...
    on Feb 13, 2010

  • Forum Post: Re: MSP430F169 - Trigger ADC1 through timer A then send output to DAC1 (sample code please)

    BrandonAzbell
    There are code examples for the various family members of the MSP430 which should be a good starting point for you. You can find them by going to the Microcontroller Home page and then select the " Code Examples " link under MSP430. Select the examples associated with the MSP430F16x. In...
    on Feb 13, 2010

  • Forum Post: Nested interrupts are not working

    VISWANATH KONDAPALLI
    Hi, we are implementing IrDA Encoder nad Decoder(using timer and port IO pin ) for communication purpose and also ADC is in use. while transmiting the data through IrDA we are unable to send . we have checked in Debugger, the microcontroller is restarting when the Timer interrupt is using and at...
    on Apr 12, 2010

  • Forum Post: Re: Simple PWM Question

    Jens-Michael Gross
    Ich checked the datasheet. There are two ways to drive the ADC12 with a given sample frequency. The easiest one is to use A/M/SMCLK as clock source for ADC conversion clock. One sample takes 13 clock cycles plus the selected S&H time (SHT0/SHT1) See fig. 28-4 in the datasheet. With SMCLK =...
    on Apr 13, 2010

  • Forum Post: Re: ADC - single sequence of channels, does it work?

    Mario Mlynek
    Hi, as far as I can see from the F5xx userguide page #446, a interrupt is generated whenever a conversion result is written to the corresponding ADC12MEMx register. Quote: "The ADC12IFGx bits are set when their corresponding ADC12MEMx memory register is loaded with a conversion result."...
    on Jun 24, 2010

  • Forum Post: Re: EZ430 Internal Temp Sensor Variations Up To 0.8C

    Jens-Michael Gross
    Oversampling means that you can get 14 bit resolution from a 12 bit ADC. Each sample has only 12 bit, but by looking at when in a series of samples the LSB flips, you can make an educated guess about where between the two voltage levels the real signal is, effectively adding some bits to the resolution...
    on Jul 8, 2010

  • Forum Post: Re: External voltage reference for the ADC12 in the MSP430F5438

    BrandonAzbell
    I would not advise applying a voltage of this magnitude on any pin of the MSP430F5438. You can find the absolute maximum ratings in the datasheet of the MSP430F5438 on page 39. As indicated, the maximum voltage to be applied to any pin is VCC+0.3V. 10V clearly violates this and you will damage the device...
    on Jul 9, 2010

  • Forum Post: ADC config, DMA transfer to memory, DAC questions!

    paul miller44746
    Hi all, I am using MSP430FG4618 Experimenter board with CCS. I have been able to sample a signal, and then use DMA to send it to the DAC to read it right back out, this is pretty much what I need to do at the moment. However, I have some questions about configuring the ADC, on the DAC operation, and...
    on Aug 12, 2010

  • Forum Post: ADC and PWM help (MSP430FG4618)

    j. s.55560
    Hello all. I was just wondering if someone can help post some tips for my project. My project involves a flex sensor (potentiometer that ranges from 60k to 100k ohms). Using external circuitry to send various voltage levels (from changes in the potentiometer) to the micro. I want to perform ADC...
    on Aug 24, 2010

  • Forum Post: DMA interrupts

    ariel
    HI, I am doing a project on the msp430f5436a. I am using the "user experiance" demo. In this demo Timer B activates the D/A. The first DMA channel (channel 0 ) moves the data from the output of the D/A into flash memory. After the D/A finishes to 'fill up' a memory bank...
    on Sep 2, 2010

  • Forum Post: Re: ADC12 and timer interrupts

    ariel
    Thanks for the help guys, Regarding the problem with the interrupts, when I pause the application after my program is stuck, I can see that the current command points to the last line in the ISR interrupt, so this might be a sign that the program doesn't exit the ISR, but I don't understand...
    on Oct 1, 2010

  • Forum Post: ADC12

    hardik padhariya
    HI ,I m using msp430fg4618/f2013 kit board.i m just checking adc12.while running adc12 in single or repeat channel mode,i get differnt digital values for same D.C input.i hv checked for adc overflow and sampling timer overflow.ref set up time has also been provided.i hv also tried a sample code from...
    on Oct 2, 2010

  • Forum Post: ADC12 and timer interrupts

    ariel
    Hi, I am using msp430f5436a for a university project- I have two questions: My application is based on TI's user experience software. In this software the ADC is activated by Timer B, and the DMA transffers the data to flash memory When the DMA is finished- it generates an interrupt. ...
    on Sep 27, 2010

  • Forum Post: ADC reference voltage

    ariel
    Hi, I am using msp430f5436A. My code is based on TI's user experience application. I am using the ADC for measuring intensity. I changed the input channel to one of the external pins, but I nead to change the referance voltage to enable negative samples (for instance Vref+=1.5V and Vref...
    on Oct 14, 2010

  • Forum Post: high sampling rate

    ariel
    Hi, I am using msp430f5436a for a university project. My code is based on TI's user experience example. I changed the system clock from 16 Mhz to 25Mhz because I wanted to sample audio input in 16Kbs frequency. 2 things have happend: a. a high rate of the samples get screwed up- there...
    on Nov 16, 2010

  • Forum Post: MSP430f5528 receiving unusual values via the ADC using TI example code

    Chris Anderson
    I'm using the TI example code (MSP430F552x_adc_10.c) to test the temperature sensor and I'm receiving values that don't seem to make much sense. At first I thought it was an error due to integer usage in the formula, but that doesn't seem to be the case. I've tried changing the sample...
    on Oct 19, 2010

  • Forum Post: MSP430: Trouble Reading Memory Block at 0x24400 on Page 0 of Length 0x91: Invalid parameter(s)

    Stefan Zorn
    Hello Everybody! I wrote a little code to read the ADC12 of my MSP430f5528 . Here you can see the code: ADC12CTL0 = ADC12ON+ADC12MSC+ADC12SHT0_15; // Turn on ADC12,setze sequenz, set sampling time, 15 ist langsamste ADC12CTL1 = ADC12SHP+ADC12CONSEQ_3; // Use sampling timer...
    on Mar 24, 2011

  • Forum Post: Why would an MSP430x2xx ADC12 give wildly variable readings of a constant source?

    Doug Jorgesen
    I am using the ADC12 on an MSP430F2619 to sample, convert, and display an analog input signal. When I test the ADC12 using a stable external voltage source (verified stable by a digital multimeter), I get wildly varying codes, with much more variability than the +-5 bits the datasheet claims for total...
    on Apr 26, 2011

  • Forum Post: MSP430 10 and 12 bit ADC enob

    Calum Mackinnon
    I can't find any refernce to the enob for the ADC's that are in the MSP - can anyone help me? Calum
    on Apr 28, 2011

  • Forum Post: Internal reference generator not accurate

    Bjarte Hetland
    Hello, I am using the msp430F2619S-HT MCU and I am trying to get 2.5V internal reference from internal reference generator, but what I see on Vref+ pin is only 2.239V. My code is: #include "msp430F2619.h" void main(void) { WDTCTL = WDTPW+WDTHOLD; // Stop watchdog...
    on May 18, 2011
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