Other Parts Discussed in Thread: DLPC2607
Hello,
In the continuing string of questions I have related structured light code here is another one.
I'm still using the structured light code with the dlp2607 controller and dlp2000 DMD. I"m utilizing 24bit black and white images, that project a single bar, being utilized as a mask. The current code that I'm using.
for (; i < num_images; i++)
{
if(!not_finished)
break;
// Transfer image structure to the buffer
for (y = 0; y < y_max; y++) {
for (x = 0; x < x_max; x++) {
location = (x + var_info->xoffset) * (var_info->bits_per_pixel / 8) + (y + var_info->yoffset) * fix_info->line_length; // offset where we write pixel value
pix = pixel_color (img[i][y][x].r, img[i][y][x].g, img[i][y][x].b, var_info); // get pixel in correct format
*((uint32_t*)(bbp + location)) = pix; // write pixel to buffer
}
}
// Freeze update buffer. this is so it won't display garbage data as we update the framebuffer
i2c_write(handle, freeze, 5);
// Display image
memcpy (fbp, bbp, screensize); // load framebuffer from buffered location
usleep (35500); // allow framebuffer to finish loading
i2c_write(handle, unfreeze, 5);
usleep (24000); // allow DLP2000 to update
the sleep time for the load bufferframe and the sleep time for the DLP2000 update are the minimum wait times I can use before I start seeing splits issues with the images I'm displaying.
The next part of the software uses gpio pins to determine when to move to the next frame.
if( is_high(9, 23))
{
printf("Single Frame Mode\n");
while (is_low(9, 25)){
if(is_low(9, 23))
break;
}
usleep(10000);
}
else
{
if( is_high( 9, 25 ) & not_finished) // check if tx2 acquisition enable signal
{
sync = 0;
if(DEBUG)
printf("SYNC = %d\n", sync);
toggle_gpio(1, 8, 8); //toggle UTC camera trigger high then low
while ( (sync < 3) && is_high(9, 25) ) // keep going while sync < 3 and TX2 is still enabling acquisition
{
if ( is_high( 8, 10) & not_finished )
{
while( is_high(8, 10) ){}
sync++;
if(DEBUG)
printf("SYNC = %d\n", sync);
if( sync < 3)
toggle_gpio(1, 8, 8); //toggle UTC camera trigger high then low
}
else
{
break;
}
}
if (DEBUG)
printf("^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n");
}
else
{
break;
}
}
if I run the software roughly 10min or longer, the frames stop updating on the dmd. The loops and triggers continue to run just fine. I have a timer in the code, that tracks how long it takes to go through 40 frames. This way I can estimate the fps. Well the timer continues to update with no issues, but the image is locked on one frame and doesn't update as it is suppose to do.
Does the device have a timeout or other such functionality that would cause the DMD or Controller to fail to load a new image? It is the same 40 images every time nothing changes.
