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ADC10
Related Posts

  • Forum Post: PWM 2553

    Raquel Almeida
    Hello, This this is my first project for msp430 and i am having problems to light a led using a pwm. I am using two controls,one by 4 keys and another using a variable resistor. the led light up at first but don´t change while I change the keys or the resistence. Can any one help me? Above the...
    on Jun 16, 2012

  • Forum Post: AD10CON

    Gaston_Melo_Arg
    i`m using the ez430rf2500 and i want to use the ad10con using the 2.5 volt reference of the device and the pin 2.0 (A0) as the input of a signal of 2 volt, my question is : where do i put de mass of the signal? I have to use the GND of the device or use the vref-? If i want to send this result...
    on Nov 3, 2008

  • Forum Post: ez430-rf2500 ADC10 Multiple Channel Sampling

    Alfred
    Currently Im using ez430-rf2500 10-bit ADC to sample 2 different signals. Im using the timer A as a trigger to sample both signals at 512 samples/sec. Isit possible to have a code to check which channels is being sampled at the moment, cos different channel utilize different codes. TACTL = TASSEL_1...
    on Nov 11, 2008

  • Forum Post: Re: Basic ADC question

    BrandonAzbell
    kpbr I am trying to print (in hyperterminal) the binary value that is stored in the ADC10MEM register after I take a sample. Can you fellows provide some guidance or sample code? You will need to take the 10-bit binary value read from the ADC10 and convert this into 3 ASCII characters to be viewed...
    on Jan 4, 2009

  • Forum Post: Re: Basic ADC question

    BrandonAzbell
    kpbr I was also hoping to find out how to convert the ADC10MEM register to a voltage. I've examined the sample code that is provided by TI, but I am not fully understanding the equation that is being used. I think it may be due to the built in reference voltages provided on the MCU (1.5V and 2...
    on Jan 5, 2009

  • Forum Post: Re: Basic ADC question

    BrandonAzbell
    kpbr If you set your reference voltages to be AVcc and AVss for Vref+ and Vref-, respectively, what if you have a changing power supply. For example, a battery powered application. I don't believe you would get results that are meaningful, if your reference moves around. If you have such a...
    on Jan 7, 2009

  • Forum Post: Re: Basic ADC question

    BrandonAzbell
    kpbr If I knew my input voltage is going to be between 0.5V and 1.5V, would the internal 2.5V reference be a suitable choice? I would say yes, but it really depends on what you need to measure. Keep in mind the power supply to the MSP430F2274 requires Vcc >= 2.2V for a 1.5V internal reference...
    on Jan 7, 2009

  • Forum Post: Re: Basic ADC question

    BrandonAzbell
    kpbr How can I print a value with more resolution? With a 2.5V reference and using the equation volt = (ADC10MEM * 2.5V)/1024, each bit of the 10-bit value represents 0.00244V, or ~2.44mV. My suggestion would be to use the following to get more bits of resolution. temp = results[1] ; volt ...
    on Jan 9, 2009

  • Forum Post: Re: eZ430-RF2500 End Device Development Pin usuage

    BrandonElliott
    The INCHx bits select the input channel of the ADC10 in the ADC10CTL1 register. The 2xx User's Guide breaks this down on page 609: http://focus.ti.com/lit/ug/slau144e/slau144e.pdf This guide is a good general resource for setting up the ADC10 module (among others). I also recommend checking out...
    on Feb 19, 2009

  • Forum Post: Re: ADC10 on MSP430F2132

    BrandonElliott
    Geof, Generally speaking the ADC10 is a successive approximation ADC. Are you aware of the 2xx User's Guide, chapter 20? This chapter explains in-depth how to operate this module and at the beginning of the chapter is a block diagram. Link: http://focus.ti.com/lit/ug/slau144e/slau144e.pdf
    on Feb 27, 2009

  • Forum Post: Re: eZ430-RF2500 End Device Development Pin usuage

    KCheung
    Kind of as a follow up question to this, I looked up the manuals and the internal temperature sensor for channel 10 I can understand, but I don't know what all the others ones mean. I was wondering if someone could explain what the other channels are used for. Thanks!
    on Feb 28, 2009

  • Forum Post: Re: eZ430-RF2500 End Device Development Pin usuage

    BrandonAzbell
    The other channels to the multiplexer depicted in Figure 20-1 of the MSP430x2xx Family User's Guide ( SLAU144 ) give some clues as to what they are connected to. In many cases, such as A0-A7, they are connected to pins of the MSP430 device. To understand which pins, will be dependent on the particular...
    on Feb 28, 2009

  • Forum Post: Re: eZ430-RF2500 End Device Development Pin usuage

    BrandonAzbell
    Coco I am trying to input a varying voltage into one of the development pins on the end device target board, then send the voltage data to the Access point and display them on the console. However, I am stuck with a few problems. 1) Which pin should I use, the vcc pin or one of the other pins? ...
    on Feb 28, 2009

  • Forum Post: Re: eZ430-RF2500 End Device Development Pin usuage

    KCheung
    So let's say I want to read the voltage that goes into P2.1. From the data sheet: P2.1/TAINCLK/SMCLK/A1 - I/O General-purpose digital I/O pin Timer_A, clock signal at INCLK, SMCLK signal output ADC10, analog input A1 This is what I tried and It didn't work. P2DIR = 0xFD; //11111101 which...
    on Mar 1, 2009

  • Forum Post: Re: eZ430-RF2500 End Device Development Pin usuage

    BrandonAzbell
    I would suggest looking at the Port P2 pin schematic in the MSP430F2274 datasheet on page 61. This diagram identifies which register bits are needed an their values to enable P2.1 to be the ADC10 analog input A1. INCH = 1 ADC10AE0.1 = 1 P2REN.1 = 0 Basically ADC10AE0.1 overrides the P2DIR.1 register...
    on Mar 1, 2009

  • Forum Post: Re: Basic ADC question

    BrandonAzbell
    Sorry for the delay in the response. We actually need to hit two registers in order to enable a single sample conversion. The example code you were using only enables the pin P2.0, or P2.1, etc. to be enabled as an analog input, but this does not communicate to the ADC10 which channel to sample. That...
    on Apr 3, 2009

  • Forum Post: Basic ADC question

    kpbr
    Greetings, I am trying to print (in hyperterminal) the binary value that is stored in the ADC10MEM register after I take a sample. Can you fellows provide some guidance or sample code? Thank you very much.
    on Jan 4, 2009

  • Forum Post: Re: Internal ADC reference at the output pin

    LukasRiedel
    Ok, solved probably... The internal reference output voltage is not between P2.4 and P2.3 as I thought and where I measured, but between P2.4 and GND...
    on May 28, 2009

  • Forum Post: Re: Internal ADC reference at the output pin

    BrandonAzbell
    Correct. The internal reference voltage would be between P2.4 and GND. Please reference the block diagram of the ADC10 in the MSP430x2xx Family User's Guide ( SLAU144 ) in Figure 20-1.
    on May 28, 2009

  • Forum Post: Internal ADC reference at the output pin

    LukasRiedel
    Hi, everybody. I am solving very easy task, but I am not able to achive the results... It is simple. All I need is get the internal ADC reference of MSP430F2132 at the output pins Vref+ and Vref- (P2.4 resp. P2.3). I have tried almost everything including I/O pin function selection, ADC10AE0 analog...
    on May 28, 2009

  • Forum Post: Re: DTC and ADC10

    BrandonElliott
    Anita Hi, I am working with MSP430F2272. Does every interrupt stop a conversation sequence? So I have to disable all interrupt except ADC10 interrupt, before starting a conversation sequence? If a sequence was once interrupted will the next sequence be converted and transfered correct? Thanks ...
    on Jun 9, 2009

  • Forum Post: DTC and ADC10

    eltury
    Greetings, What is allowed to interrupt an automatic block data conversion and transfer? I occasionally bomb out of a 33 conversion single channel for no apparent reason. The ADC10B1 indicates the block is not filled, which I knew. If an automatic data transfer can be interrupted, is the proper...
    on Jun 1, 2009

  • Forum Post: Re: Saving RAM on MSP430 after power cycle

    BrandonElliott
    Fred The variable I need saved is written every two minutes based on an ADC value, so writing to flash is fine, I guess I'm just not exactly sure how to write a variable to flash. Any tips? Absolutely. We have several flash-writing code examples: msp430x21x2_flashwrite_01.c Flash In-System...
    on Jun 30, 2009

  • Forum Post: Problem Adding ADC to MSP430x2012 program

    Tuatha De
    I need to add ADC to a presently operating HBLED driver program done in C with CCE3 but each time I add the following line in the set-up section of my program I get: >>Compilation Failure. Obviously this does not happen when the line is removed. The line I'm trying to add is: ADC10CTL1...
    on Jun 30, 2009

  • Forum Post: DTC and ADC10

    Andy Nicoll
    We're using MSP430F2132 MSP-FET430U28 eval board with the MSP-FET430UIF . Our goal is to have the timer trigger an ADC10 sequence and have the DTC store it to RAM with an interrupt when it is done - all day long. In fact, that works but only for one block transfer. On page 20-20 (PDF page604),...
    on Jul 16, 2009
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