IPECamera timeout should be computed using another formula

[Suren A. Chilingaryan]

Here is the message from Uros:

Full readout time = exposure time + fot + readout time
FOT = (reg73 + 2*(16/number_outputs))*129*clk_per

Readout time = (129 * clk_per * 16/number_outputs) * num_lines,


reg73= 7 (I think, just check this)
number_outputs = 16 -for 10bit, 4 - for 12bit
clk_per=25ns
num_lines = 1088 or 2047 or 1, depends what you set....

On top of that, there is a DMA timeout which is 50 ms according to Lorenzo.

[Matthias Vogelgesang]

What does FOT stand for? What does reg73 stand for and how can I access it by name?

One more thing, what is number_outputs for 11 bit? Also could someone add units? Is everything in nanoseconds?

[Matthias Vogelgesang]

So, I adapted that formula (was using that in a different way before) but to me the timeouts seem unreasonably high.

[Uros Stevanovic]

Actually DMA timeout is a bit higher, it is 67,2 ms, according to my code. Lorenzo should confirm.

FOT stands for the Frame Overhead Time, during which the pixels are sampled and prepared for readout.

All units are unnumbered, other than the clk_per, which is a clock period. For the clock of 40 MHz, this is 25ns.

Reg73 is 20, and this value is never changed.

Number_outputs for 11-bit is also 4, Michele should confirm.

[Matthias Vogelgesang]

All units are unnumbered, other than the clk_per, which is a clock period.

That's the point. If I don't know which unit is supposed to be used, the formula is useless. Since the clock period is given in nanoseconds the remaining times must be in nanoseconds too, however, someone told me that's not the case.

[Suren A. Chilingaryan]

INFINITE timeouts seems to work.