Slow frame rate (DE1 + D5M)

> also i see the blinking screen with frame rate

I don't understand this sentence.

However, I was able to make the board & verilog code to do what I needed. I modified the circuit to work on a single line and to do processing on it.

If I can be of any help, ask

Enrico

i did not make any change in the code given with the camera, but the camera is not capturing the right images or the code is not able to display the image correctly. i am not sure if the camera is damaged or what...

the green LED's on the DE2 board blink with the rate the camera is capturing images, the output on the monitor is also blinking with the same pattern of random images. how can i chek the camera is working fine?

Did you read the user manual for the DE2?

Mine is a DE1 and I have to press KEY3 to star free capturing, KEY0 for reset and KEY1 (combined with SW0) to increase/decrease sensitivity (and thus frame rate)

The project DE2_CAMERA/DE2_D5M.qpf uses the same keys as the DE1.

Are you using this project, or the DE2_70_CAMERA?

uncommon result...

is the monitor working properly? Tried another one?

What quartus project did you run, with or without NIOS?

Perhaps you need to do some signal tap analisys

monitor is working perfect... i tried the same code on another monitor with same results...

i am using quartusII 9.1 with NOIS 9.1

Has anyone solved this problem?

I too have a slow frame rate with D5M and DE1

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I connected the d5m camera to the de1 board and loaded the DE1_D5M project. When I plug the vga connector I can see images, but with a very slow rate. If I increase it (sw0 + key1) the image quickly become black, but still with a low frame rate.

In the hardware spec. it is said that the camera can take 150 frames per second at vga, while I'm seeing less than 10 fps.

I thought that the reason could be some slowness in the vga part of the circuit, and to verify this I debugged (jtag in-system probe) the rCCD_FVAL line, which should be the "frame valid" signal coming from the camera. This line shows the same slow frame rate.

Any hint?

My actual need is to do image processing on a row-by-row basis, of frames coming at, say, 30..60 per second.

Enrico

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Has anyone solved this problem?

I too have a slow frame rate with D5M and DE1

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You need just increase the PIXCLK by adjusting the d5m build-in PLL, or connect XCLKIN pin directly to your in-fpga PLL.

In terasic examples XCLKIN is set to 12MHz thru d5m's PLL, but PIXCLK has the same frequency(because of wrong config(I2C_CCD_Config.v))

Example of PLL configuration is in THDB-D5M_Hardware specification.pdf (pages 30-32)

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You need just increase the PIXCLK by adjusting the d5m build-in PLL, or connect XCLKIN pin directly to your in-fpga PLL.

In terasic examples XCLKIN is set to 12MHz thru d5m's PLL, but PIXCLK has the same frequency(because of wrong config(I2C_CCD_Config.v))

Example of PLL configuration is in THDB-D5M_Hardware specification.pdf (pages 30-32)

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Thank you,

I modify these two lines in I2C_CCD_Config.v following your help and it works

11 : LUT_DATA <= 24'h116004; // PLL_m_Factor<<8+PLL_n_Divider

12 : LUT_DATA <= 24'h120004; // PLL_p1_Divider

Pixel_clock = 60hex(96decimal) * XCLK(25MHz) / [M(4+1) *N (4+1) = 96MHz

also change the XCLK to camera module to 25MHz.

refer to camera hardware specification in PLL (page 34) for more information.