From a8cb5d635996d9eee0838cfae88c9928a64d83e6 Mon Sep 17 00:00:00 2001 From: Grant Meyerhoff Date: Fri, 18 Jun 2021 17:23:49 -0500 Subject: mpm: restore rfdc nco frequency after setting sync source After setting sync sources, the RFDCs get reset, we need to restore the previously set frequencies so that the device continues to transmit/receive at the requested frequency --- mpm/python/usrp_mpm/periph_manager/x4xx.py | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'mpm/python/usrp_mpm/periph_manager/x4xx.py') diff --git a/mpm/python/usrp_mpm/periph_manager/x4xx.py b/mpm/python/usrp_mpm/periph_manager/x4xx.py index b32cbeb08..70a087d14 100644 --- a/mpm/python/usrp_mpm/periph_manager/x4xx.py +++ b/mpm/python/usrp_mpm/periph_manager/x4xx.py @@ -876,6 +876,10 @@ class x4xx(ZynqComponents, PeriphManagerBase): # and throw an exception. We need to put the device back into a safe # state in that case. self.set_master_clock_rate(self._master_clock_rate) + # Restore the nco frequency to the same values as before the sync source + # was changed, to ensure the device transmission/acquisition continues at + # the requested frequency. + self.rfdc.rfdc_restore_nco_freq() except RuntimeError as ex: err = f"Setting clock_source={clock_source},time_source={time_source} " \ f"failed, falling back to {self._safe_sync_source}. Error: " \ -- cgit v1.2.3