Using the digital_cam module, we can adjust the frequency of the
periodic function gpio_cam_ctrl_periodic() to a
desired frequency by changing the parameter freq in
the XML file. We've found that the frequency in hertz is computed
x = freq / 3
And this conversion is consistent on the interval freq =
[ 3 , 30 ]. However once we surpass a value of 30, the frequency in
hertz automatically clamps to roughly 20Hz.
Does anyone know why the code works this way or if there's a way to
get a wider range of frequencies in hertz for the CamSW pin?