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intefacing a sellphone camera
You can do it with a pxa270 micro for example. They contain a quick camera capture interface for cell phone cameras. Or if you have a datasheet indicating the output signal, you can make your own device with a CPLD or FPGA that dumps the image to memory. You can...
DSP Selection
I would like to share my opinion about this subject:
You should first try to quantify your processing power requirement:
How long (cycles) will my dsp algorithm take to finish?
What is the speed needed for AD conversion?
What is the interrupt latency in the different...
Your time critical dsp calculations should be in fixed point (interupt, sampling), so you need convert your floating point parameters in fixed point before.
You can make floating code calculations in your non-time critica code sections.l
yes as I remember there is only 18bit wide LCD bus coming out from the PXA.
The LCD was 24 bit, so we connected the LSB bits of each color to the ground.
We chose Sharp. There are 2 kind of LCDs available : one that required extra timing signals which the PXA don't generate (you have to place a...
I did finished a project a few weeks before.
In fact I was asking myself the same question and have examined the datasheets LCD-Controller and DMA Controller Section. But then We decided to use an OS, it was cheaper (faster) than writing his own LCD interface.
You have the choice between Linux...
Averaging Image
You are complaining that your calculations are takes too long but you don't say how you have implemeted them.
As far as I know, you need to do 2-D convolution of your input image with a certain mask. So you should do a lot of matrix operation, look at the assembly code to check...
projectile problem
it is the projectile problem which as variable g with the altitude. You must replace g with g(h)=...
You will also need to know the earth's mass, but that can be found with escape velocity. Try to think with polar coordinate, forget about x.
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