Johannes Stezenbach wrote: >- program PLL for frequency to scan >- program demod for scanning >- poll some demod register until it signals completion > (or use irq if available) > > This is possible with the adaptive algo in the sense that the relevant function can return values for the relevant . For example, center_carrier() returns the status when that operation is complete etc .. >- pass result to userspace (e.g. event, wake up poll(2), ioctl) > > But these functions, i think will need to stay in kernel, to avoid too many transactions, IOCTL's from userspace to the driver. >- get frequency step for reprogramming PLL from driver >- repeat > >I know the driver software from the fe vendors often uses >floating point and makes it look complicated, but IMHO >it doesn't have to. > > > Yeah, i have a small implementation without that complication, but not yet finished though. Manu
