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  • Author Author: Jan Cumps
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MSP432 and TI-RTOS: Sharp LCD BoosterPack

Jan Cumps

How to work with the Sharp LCD BoosterPack,  MSP432 LaunchPad and TI-RTOS.

 

There's (currently) no TI-RTOS driver or example for the Sharp LCD BoosterPack with the MSP432 LaunchPad. But someone fixed that for us...

 

What you need:

  • MSP432 LaunchPad
  • 1 micro-USB cable
  • Code Composer Studio
  • TI-RTOS for MSP43X
  • 430BOOST-SHARP96430BOOST-SHARP96 LCD BoosterPack

 

At the time of writing, the TI-RTOS release for MSP43x doesn't ship with a driver for the Sharp 96*96 LCD BoosterPack.

Other flavours of the TI-RTOS (e.g.: CC1310 and 2650) have both driver and examples. My first idea was to port that implementation to the MSP432.

But then I stumbled on a forum post of a Mr. Pocreva on the TI E2E forum that contained a port. A working one!

 

The start of that forum post contains a zip file. You'll find grlib and LcdDriver folders in BluHale path of that archive.

Copy these two to your project and add a new include entry that points to grlib/grlib.

 

image

 

And then add this include and rtos task (or just replace the existing heartBeatFxn() task of the empty example) to your project. Check my links below to learn how to start a TI-RTOS project if you don't have one ready.

 

#include <lcddriver/sharp96x96.h>

Graphics_Context g_sContext;

#define TASKSTACKSIZE   512

Task_Struct task0Struct;
Char task0Stack[TASKSTACKSIZE];

/*
 *  ======== heartBeatFxn ========
 *  Toggle the Board_LED0. The Task_sleep is determined by arg0 which
 *  is configured for the heartBeat Task instance.
 */
Void heartBeatFxn(UArg arg0, UArg arg1)
{
    Sharp96x96_LCDInit();
    GrContextInit(&g_sContext, &g_sharp96x96LCD);
    GrContextForegroundSet(&g_sContext, ClrBlack);
    GrContextBackgroundSet(&g_sContext, ClrWhite);

    GrClearDisplay(&g_sContext);
    GrContextFontSet(&g_sContext, &g_sFontCm20b);

    GPIO_toggle(Board_LED0);

    GrStringDraw(&g_sContext, "Hello,", -1, 10, 15, 0);
    GrStringDraw(&g_sContext, "world!", -1, 22, 60, 0);

    GrFlush(&g_sContext);

    while (1) {
        Task_sleep((UInt)arg0);
        GPIO_toggle(Board_LED0);
    }
}

 

 

The header of the rtos task initialises the LCD driver. The task's loop just flashes an LED to show that the RTOS lives.

 

 

image

 

There are 153 fonts available. Enjoy! Make something nice.

(there's a sample project attached)

 

 

 

TI-RTOS Series
MSP432 and TI-RTOS: Getting Started Pt. 1 - Set Up and 1st RTOS Task
MSP432 and TI-RTOS: Getting Started Pt. 2 - Add an ADC Sample Task
MSP432 and TI-RTOS: Getting Started Pt. 3 - USB with Minimal CPU Use
MSP432 and TI-RTOS: PWM
MSP432 and TI-RTOS: I2C Configuration for Sensors BoosterPack
MSP432 and TI-RTOS: another I2C example - talk to a DAC
MSP432 and TI-RTOS: Sharp LCD BoosterPack
MSP432 and TI-RTOS: PID Library Part 1 - Intro
MSP432 and TI-RTOS: PID Library Part 2 - Real World Example
Attachments:
empty_MSP_EXP432P401R_TI.zip
Parents

  • Jan,

     

    Oh, cool.  Thanks.  It's more than likely something not set right on my end so I'll have another look at it to see what is up, but I would appreciate you sharing anything you find.

  • in reply to jomoenginer

    Jan,

     

    I appreciate you taking the time to work on this and create another video.  One note on the video, I am not sure what web cam you are using, but if it is a Logitech web cam, you can use the Logitech Camera Settings application to set the camera to not auto-focus on an object. The vid of the board was a bit out of focus. However, besides the missing "Graphics_Context g_sContext;" declare, the original videos were fine but the new ones do have more detail.

     

    Okay, so I did as you shown in your new video and this project does build and upload without issue.  I also created 2 other project but following the "Project->New CC Project"  as well as "File->New->"CCS Project" and selecting the MSP432 TI-RTOS empty project, apply the modifications to the Project with adding LcdDriver and grlib, set the Include path and copy the code I was using in the failing projects and in each of the new cases the projects build and load without issue.  However, the 2 original projects I created still do not build without errors for "g_sFontCm20b" even though I copy and pasted the same code from the passing projects and reset the Include path. I'll just chalk this up to a screwy glitch with CCS and move on with the working projects. 

     

    Thanks!

Comment
  • in reply to jomoenginer

    Jan,

     

    I appreciate you taking the time to work on this and create another video.  One note on the video, I am not sure what web cam you are using, but if it is a Logitech web cam, you can use the Logitech Camera Settings application to set the camera to not auto-focus on an object. The vid of the board was a bit out of focus. However, besides the missing "Graphics_Context g_sContext;" declare, the original videos were fine but the new ones do have more detail.

     

    Okay, so I did as you shown in your new video and this project does build and upload without issue.  I also created 2 other project but following the "Project->New CC Project"  as well as "File->New->"CCS Project" and selecting the MSP432 TI-RTOS empty project, apply the modifications to the Project with adding LcdDriver and grlib, set the Include path and copy the code I was using in the failing projects and in each of the new cases the projects build and load without issue.  However, the 2 original projects I created still do not build without errors for "g_sFontCm20b" even though I copy and pasted the same code from the passing projects and reset the Include path. I'll just chalk this up to a screwy glitch with CCS and move on with the working projects. 

     

    Thanks!

Children
  • in reply to jomoenginer

    Cool.

     

    > One note on the video

    The cam was an afterthought. I had already started the screen recorder when the idea for the cam came to mind.

    I just settled for it to be able to show something happening on the display image

    I will check out the Logitech app, because I'm not satisfied at all with results when I do a proper CAM setup either.

     

    > I also created 2 other project but following the "Project->New CC Project"  as well as "File->New->"CCS Project"

    Ah, I don't use those options for TI-RTOS. At first sight, it looks as if this way of creating the project doesn't add pasted subfolders to the source/compile path.

     

    Enjoy your display project!

  • in reply to jomoenginer

    Jan,

     

    Okay, I believe I have found the issue.  I was comparing the failing projects with the good projects I have and noticed the GrLib folder in the failing projects where shown as "GrLib" rather than "grlib" like in the passing projects.  Looking at the files that were used to import the "grlib" folder, I found the one with the "Grlib" folder came from the "BHLCD" directory the code that John Pocreva posted from the TI forum link you provide in you vid. If if i use the  LcdDriver and GrLib from the BHLCD folder the project fails to build.  But, if i user the LcdDriver and grlib from the BluHale folder, or the code you post, the project succeeds to build and load.  So, it's not a glitch in CCS but a glitch in the the user (me) with regards to the drivers that were pulled into the project.  I suppose this could be used as a FYI for anyone else that may run into this, but following your instruction and using your posted code should not show the build error. 

  • in reply to jomoenginer

    Thanks,

    I've updated the blog above to show that the two folders are in the BluHale directory of the ZIP file.