This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

connect EZ430-T2012 - MSP430 USB Stick F2012 Board and launch pad?

Other Parts Discussed in Thread: MSP430F2012, MSP430F1122, MSP430G2452

 

Due to the low pin count of launch pad i hav decided to connect a EZ430-T2012 - MSP430 USB Stick F2012 Board to launch pad via its ez430pin headers.

wht is the best way to keep the communication between these two modules.(easy and fast)?

eg:10 analog readings read by T2012 send to launch pad's uC

  • Hi Hasith,

    why don't you connect the signals on J3 (using jumper wires, i.e. http://www.watterott.com/en/Jumper-Wires-F/F-100mm or http://www.sparkfun.com/products/8430) instead of J4 (eZ430 target board interface)?

    Why spending two micros for a task which can be done by one! Please keep in mind that you can run a Timer-UART on the MSP430F2012 too, so using the Backchannel UART is an easy task to do.

    Rgds
    aBUGSworstnightmare 

  • thank u,

    But I don't understand ur answer. I need more information abt that.(I am just a baby to MSP430 :(  )

    Actually I think it is best to use two micros in my application,bcoz I think parallel processing will make my application more faster.(It is not reading analog values)

    I really need this parallel processing capability.Then how can I do it ?????

     

  • Hi Hasith,

    well, parallel processing will not speed up your application by default since you will have to handle a lot of communication between the two (or more) micros.

    So, why don't you use i.e. a device which can be clocked at 25MHz (instead of 16MHz max clock frequency for the MSP430F2012)? You can use the product selector for finding the best suited part http://focus.ti.com/paramsearch/docs/parametricsearch.tsp?sectionId=95&tabId=1200&familyId=342&family=mcu

    Can you please provide more details about what your application? 

    Kind regards
    aBUGSworstnightmare

    P.S. Connecting the eZ430-T2012 to J3 of your Launchpad is easy; connect as listed below (pls notice that you need to remove the jumpers!):

    VCC --> P1
    GND --> P14

    RST --> P10
    TEST --> P11

     

  • Thank u aBUGSworstnightmare,

    This is the problem due to the limited time available,there is no time to make new PCBs.So it should be Launch pad and F2012 .I am trying with EZ430-RF2500T - MSP430 2.4-GHz Wireless Target Board.But this is not sure since there is a problem with obtaining a license to import RF devices. Also low cost is a must.

    I would like to tell u my requirements.It is like a line following robot.

    1.Handling two motors (2 PWM + 4 Direction pins)

    2.Line sensing array (8 pins)

    3.Other sensors and actuaters ( 4 pins)

    I this way I need at least 16 pins.

    My plan was reading the analog values sent by line sensor array by F2012 and send a number which represent the deviation from the line to the launch pad. (Using SPI or other method)

    Anyway if this is not possible, can I use MSP430F1122 in the launch pad.(if i manage to fit this SOIC package to the DIP socket)

    If so I can use three GPIO pins of  MSP430F1122 and send 8 different messages to the F2012.right????????????

     


  • Hi Hasith,

    MSP430F1122 is no option for you since it has no Spy-Bi-Wire interface (you need a MSP-FET430UIF for debugging this MCU)!

    For communication between the different MCUs (if any) you should use I2C since it will save you some I/O-pins.

    Maybe you should try to get samples of MSP430G2452 (or any other Value Line device with 20-pin DIP-package and ADC); this will give you the 16 I/O's you need for the hardware you have at hands.

    Rgds
    aBUGSworstnightmare 

  • Yes, MSP430G2452IN20 (20-pin PDIP package) will plug in to the Launchpad socket. You may even use 2 Launchpads working in tandem. The total cost is ~US$10,

     

  • hey old_cow_yellow,

    cud u tell me how to do that ?

    thank u

  • You were talking about using using a Launchpad and a T2012. Using two Launchpad is not any different. The jumpers and headers provided actually makes it easier. When connecting the two, remember to connect the GND from one Launchpad to the other and make sure there is only one source of Vcc for both boards. You need to use at least a one-wire serial interface between the two.

**Attention** This is a public forum