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  • TI Thinks Resolved

Best microcontroller for my project

Intellectual 260 points

Replies: 5

Views: 995

Hello the community, I need you advice ! I don't know really MSP430 series

I have a project but I need you advice to choose the best microcontroller in relation of the price.
Below my specifications :

- low power consumption ( the controlleur wake-up two time a day for 20 seconds)

- I need 4 capacitives touch

- internal RTC to manage and calculate time every time the controller wake-up ( calculate sun set and sunrise hours ). offset 5 to 10 minutes by year

- manage a H bridge ( it's my own H bridge) for drive a DC motor . I need 1 PWM Output and 1 Digital Output for direction.

- 3 analogs input ( 10 bit definition max) to measure a LDR/ motor stall / battery level

- Manage a TFT 1.44 display ( ST7735 ) thru SPI

Last question : do I use Energia or CCS ? ( don't know in regards with the complexity of the program , debug etc .... )

Regards

 My first choise : MSP430FR2532 

  • too many chips fit your criteria. you have to do better to narrow it down.
  • HI BUSO Olivier,

    The MSP430FR2532 is a good candidate as is provides everything you are looking for. The will point out is the RTC on this device is actually an RTC counter and does include the automatic date, time, alarm functions normally associated with RTC peripherals. It should perform the functionality you need since it can generate interrupts at whatever period you need and you can manage your sun rise and sun set corrections in software.

    Also, this MCU has about 8K of FRAM memory and you find that controlling the TFT might require more memory, so stepping up to the MSP430FR2533 might need to be considered. Not sure, just want to mention it.

    It is very easy to get the capacitive touch portion of your design when you use the CapTIvate Design Center, which is a free GUI that helps you build your sensor configurations then generates all the code needed to drive the touch sensors. You can then simply add your code to control the other features for your system.

    Dennis Lehman

  • In reply to Dennis Lehman:

    Hi BUSO Olivier,

    I wanted to also add that you should consider using Code Composer Studio instead of Energia. Energia makes developing your project simple but doesn't directly support the CapTIvate capactive touch and will most likely consume more FRAM/RAM memory.

    Dennis Lehman

  • In reply to Dennis Lehman:

    Hi Dennis , thanks for your comments . I want to acquire a launchpad for my first step . For you , what is the best launchpad for to began with MSP430FR2533 ? and my second question is , I saw that existed a booster pack named BOOSTXL-EDUMKII , do you think it's the best way to learn with TFT screen or this boosterpack is dedicared for the MSP432P401R LaunchPad Bundle ?
    Regards

    Olivier BUSO
  • In reply to BUSO Olivier:

    Hi Olivier,

    Sorry for my delay.

    Actually I would recommend taking a look at our new BOOSTXL-CAPKEYPAD featuring the new MSP430FR2522 for coming up to speed with CapTIvate capacitive touch. Because the BOOSTXL is compatible with our other MSP430 launchpads, you can later use the MSP432 launchpad with TFT module to build a complete system.

    Dennis Lehman

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