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-rw-r--r--mpm/python/usrp_mpm/periph_manager/n3xx_periphs.py6
1 files changed, 4 insertions, 2 deletions
diff --git a/mpm/python/usrp_mpm/periph_manager/n3xx_periphs.py b/mpm/python/usrp_mpm/periph_manager/n3xx_periphs.py
index 803f056c3..0370f6e67 100644
--- a/mpm/python/usrp_mpm/periph_manager/n3xx_periphs.py
+++ b/mpm/python/usrp_mpm/periph_manager/n3xx_periphs.py
@@ -294,7 +294,9 @@ class MboardRegsControl(object):
"""
pps_sel_val = 0x0
if time_source == 'internal':
- assert ref_clk_freq in (10e6, 25e6)
+ assert ref_clk_freq in (10e6, 25e6), \
+ "Invalid reference frequency for time source 'internal'. Must " \
+ "be either 10 MHz or 25 MHz. Check clock and time source match."
if ref_clk_freq == 10e6:
self.log.debug("Setting time source to internal "
"(10 MHz reference)...")
@@ -316,7 +318,7 @@ class MboardRegsControl(object):
self.log.debug("Setting time source to sfp1...")
pps_sel_val = 0b1 << self.MB_CLOCK_CTRL_PPS_SEL_SFP1
else:
- assert False
+ raise RuntimeError("Invalid time source: {}".format(time_source))
with self.regs:
reg_val = self.peek32(self.MB_CLOCK_CTRL) & 0xFFFFFF90