Problem with command LCR_SendSplashLut(unsigned char *lutEntries, unsigned int numEntries)

Evan Espinoza

Hello,

I have used the standard API library along wiht other source and header files from theGUI. I've tested out the commands for turning off LEDs or changing patterns and everything works great.

I am having issues getting the patterndisplay mode to work properly. I've used the following code:

LCR_SetMode(TRUE);

   LCR_LoadSplash(1);

   LCR_AddToPatLut(0, 1, 8, 1, false, false, false, true);

   LCR_SetPatternConfig(1, 1, 50, 1);

   LCR_SetExposure_FramePeriod(10000, 10000);

   LCR_SetPatternTriggerMode(0); //change to 1 if it doesn't work

   LCR_SendPatLut(void);

   LCR_SendSplashLut(); <----- ISSUE HERE

LCR_ValidatePatLutData(); <----- ISSUE HERE

The issue I encounter is SendSplashLut requires two entries..... (unsigned char *lutEntries, unsigned int numEntries).

The pointer is causing issues! What do I substitute for *lutEntries?

Thanks for your help!

-Evan

over 10 years ago

0 Sanjeev over 10 years ago

TI__Mastermind 30875 points

Hello Evan,

Are you using v2.0 firmware? If so, please make sure, before sending any commands, make sure the video signal is connected to the hardware. And the EVM is able to lock and display the signal. Only after this proceed with running your commands.

There are other threads you can refer to

e2e.ti.com/.../1442280

e2e.ti.com/.../1388604

Regards,
Sanjeev

0 Evan Espinoza over 10 years ago in reply to Sanjeev

Prodigy 120 points

Thank you for your reply. I just realized I forgot to add USB_Open();

here's my updated code:

#include "stdafx.h"
#include <iostream>
#include "API.h"
#include "Common.h"
#include "targetver.h"
#include "usb.h"
#include "hidapi.h"
#include <stdlib.h>
#include <stdio.h>
#include <wchar.h>

using namespace std;

int main(){
USB_Open();

LCR_SetInputSource(0, 1);

LCR_SetMode(TRUE);

LCR_AddToPatLut(0, 1, 8, 4, false, false, false, false);
unsigned int pStatus[] = { BIT0, BIT1, BIT2, BIT3, BIT4 };
LCR_ValidatePatLutData(pStatus);

LCR_SetPatternConfig(1, 1, 256, 1);

LCR_SetExposure_FramePeriod(10000, 10000);

LCR_SetPatternTriggerMode(1);

LCR_SendPatLut();

cout << "Press Enter to end process safely";
cin.get();
LCR_SoftwareReset();
USB_Close();
}

0 Evan Espinoza over 10 years ago in reply to Evan Espinoza

Prodigy 120 points

Sanjeev,

given my updated code, it appears all that happens is the DLP will go blank until the program ends. What could I do to remedy this?

-Evan

0 Evan Espinoza over 10 years ago in reply to Sanjeev

Prodigy 120 points

Sanjeev,

However, this updated code just seems to turn off the projector during operation until the program ends. How can I remedy this?

-Evan

0 Sanjeev over 10 years ago in reply to Evan Espinoza

TI__Mastermind 30875 points

Evan,

You must issue LCR_ValidatePatLutData(); LCR_SendPatLut(); command

so add this additional step
LCR_SendPatLut();

LCR_ValidatePatLutData();
//You can either query for validation status query, whether complete or not, or just wait for 1.0 second

LCR_PatternDisplay(2) // 0 - Stop, 1 - Pause, 2 - start

Regards,
Sanjeev

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Problem with command LCR_SendSplashLut(unsigned char *lutEntries, unsigned int numEntries)