I am trying to use the ISE demo project that configures VmodCam video feeds at resolution 1600x900 using HDMI port, I made the following modifications:
- Fist of all, I removed the framebuffer controller of DDR2 and replace by a BRAM controller.
- I am trying to read one frame from camera A and sending it to pc through UART, I Implemented an RGB-to-grayscale converter in order to minimize the memory usage 3 times. Each time I store 1600 bytes in the BRAM and then sends them through the UART transmitting interface, however there is a big difference between the data transfer rate of the VDHCI connector used to connect VmodCam to atlys board and the maximum data transfer rate of the UART protocol which is 115200 bps, my question which parameter in the camera should I control to ensure correct reading of data, and can I use the video capture mode to take one frame of the video feed, In the manual there is a mention of FIFO in the camera, how many pixels can the fifo store, and finally can I take the videtiming controller out of the desing ?
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takieddine
Hi Jon,
I am trying to use the ISE demo project that configures VmodCam video feeds at resolution 1600x900 using HDMI port, I made the following modifications:
- Fist of all, I removed the framebuffer controller of DDR2 and replace by a BRAM controller.
- I am trying to read one frame from camera A and sending it to pc through UART, I Implemented an RGB-to-grayscale converter in order to minimize the memory usage 3 times. Each time I store 1600 bytes in the BRAM and then sends them through the UART transmitting interface, however there is a big difference between the data transfer rate of the VDHCI connector used to connect VmodCam to atlys board and the maximum data transfer rate of the UART protocol which is 115200 bps, my question which parameter in the camera should I control to ensure correct reading of data, and can I use the video capture mode to take one frame of the video feed, In the manual there is a mention of FIFO in the camera, how many pixels can the fifo store, and finally can I take the videtiming controller out of the desing ?
Thank you very much,
TE SAIDI
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