Increasing count range (CNT register) of16 Bit timer in encoder mode.

[vsmak.1]

Due to some hardware restrictions I dont have any 32Bit timers available on my controller (STM32F7) at the moment. My application requires me to count upto 18bits, which is evidently surpassing the 16-bit count limit the register can handle and hence it overflows. As the header suggests, is there any way I could reliably increase my counting range (through HAL or external logic) which would not make me compromise on missing interrupts and get the job done?

Really appreciate all the help.

[waclawek.jan]

> , is there any way I could reliably increase my counting range which

> would not make me compromise on missing interrupts

No.

I suggest to move the encoder to one of the 32-bit counters and move the function which is now there to a 16-bit counter, and perhaps ask that question again with that other functionality.

Or use a small cheap 'F0/'G0 as a slave to extend on the counters.

JW