2 ms·

A loop calling nanosleep() to wait for the next interval, with the process using a real-time scheduler policy (SCHED_FIFO or SCHED_RR) should be stable enough.

• nitrogen 9y ago
  I wonder, could DMA transfer be used in one of the newer parallel port modes? Or is there not a predefined signaling speed, making sample rate unpredictable?
  • caf 9y ago
    The newer parallel port modes require handshaking from the device.