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Conv TTL RS485 - Testing
Commit 35b1a2e1 authored by Theodor-Adrian Stana's avatar Theodor-Adrian Stana
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sw: Changes in rs485_pulse_rtm.py 

Added the repetitive stuff for the pulse test itself to a function that gets
called with the necessary parameters. Then, some small changes were made to the
pulse test (like clearing the counters before enabling the pulse repetition) to
make the pulse test work.

It now almost works, but we're still not there yet, to be determined if this is
a hardware issue or still script problems (most likely the former).

The pulse test should also have better output (like tell on ERROR on which phase
it fails)
parent 6393a08e
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Showing with 46 additions and 86 deletions
pts/python/rs485_pulse_rtm.py
View file @ 35b1a2e1
...@@ -109,13 +109,15 @@ def dis_pulse_gen(bus): ...@@ -109,13 +109,15 @@ def dis_pulse_gen(bus):
bus.vv_write(CSR, val) bus.vv_write(CSR, val)
time.sleep(0.1) time.sleep(0.1)
def clear_counters(pc): def clear_counters(bus):
pc = CPulseCounter(bus, PULSE_CNT_BASE)
# Clear pulse counters for the TTL channels # Clear pulse counters for the TTL channels
for i in range(11, 17): for i in range(11, 17):
pc.wr_out_cnt(i, 0) pc.wr_out_cnt(i, 0)
pc.wr_in_cnt(i, 0) pc.wr_in_cnt(i, 0)
def check_counters(pc, inf, pel): def check_counters(bus, inf, pel):
pc = CPulseCounter(bus, PULSE_CNT_BASE)
ic_arr = [] ic_arr = []
oc_arr = [] oc_arr = []
for i in range(11, 17): for i in range(11, 17):
...@@ -132,6 +134,18 @@ def check_counters(pc, inf, pel): ...@@ -132,6 +134,18 @@ def check_counters(pc, inf, pel):
ic_arr[i], oc_arr[i]) ic_arr[i], oc_arr[i])
pel.set(msg) pel.set(msg)
def pulse_test(bus, inf, pel, output, term):
msg = "Testing channel connections (term. %s): Out%d -> In" % (term, output)
print(msg)
mux_sel(bus, output)
clear_counters(bus)
inf.write('\n')
inf.write(msg+'\n')
en_pulse_gen(bus)
time.sleep(2)
dis_pulse_gen(bus)
check_counters(bus, inf, pel)
time.sleep(1)
##------------------------------------------------------------------------------------------------- ##-------------------------------------------------------------------------------------------------
## main -- ## main --
...@@ -161,10 +175,8 @@ def main(bus, tname, inf, log): ...@@ -161,10 +175,8 @@ def main(bus, tname, inf, log):
pel.set(msg) pel.set(msg)
return pel.get() return pel.get()
# Initialize a pulse counter object # First, clear the pulse counters
pc = CPulseCounter(bus, PULSE_CNT_BASE) clear_counters(bus)
clear_counters(pc)
# Ask the user to make the daisy-chain # Ask the user to make the daisy-chain
print("Connect the LEMO cable as follows:") print("Connect the LEMO cable as follows:")
...@@ -193,10 +205,15 @@ def main(bus, tname, inf, log): ...@@ -193,10 +205,15 @@ def main(bus, tname, inf, log):
#--------------------------- #---------------------------
# Test with terminations OFF # Test with terminations OFF
#--------------------------- #---------------------------
term = "OFF"
inf.write('\n') inf.write('\n')
# Read out fail-safe lines -- should now be high, since the MUXes are # Read out fail-safe lines -- should now be high, since the MUXes are
# powered but not enabled # powered but not enabled
msg = "Testing RS-485 fail-safe on open-connection case (term. %s)" % term
print(msg)
inf.write('\n')
inf.write(msg+'\n')
val = bus.vv_read(LSR) val = bus.vv_read(LSR)
val >>= LSR_REARFS_OFS val >>= LSR_REARFS_OFS
if (val == 0x3f): if (val == 0x3f):
...@@ -213,12 +230,12 @@ def main(bus, tname, inf, log): ...@@ -213,12 +230,12 @@ def main(bus, tname, inf, log):
bus.vv_write(CSR, val) bus.vv_write(CSR, val)
time.sleep(1) time.sleep(1)
msg = "Testing RS-485 fail-safe on short-circuit case (term. OFF)" # Fail-safe test
msg = "Testing RS-485 fail-safe on short-circuit case (term. %s)" % term
print(msg) print(msg)
mux_sel(bus, 0x0) mux_sel(bus, 0x0)
inf.write('\n') inf.write('\n')
inf.write(msg+'\n') inf.write(msg+'\n')
en_pulse_gen(bus)
val = bus.vv_read(LSR) val = bus.vv_read(LSR)
val >>= LSR_REARFS_OFS val >>= LSR_REARFS_OFS
if (val == 0x3f): if (val == 0x3f):
...@@ -227,45 +244,14 @@ def main(bus, tname, inf, log): ...@@ -227,45 +244,14 @@ def main(bus, tname, inf, log):
else: else:
msg = "ERROR: Failsafe lines readout (0x%02X) incorrect - expected 0x3F" % val msg = "ERROR: Failsafe lines readout (0x%02X) incorrect - expected 0x3F" % val
pel.set(msg) pel.set(msg)
dis_pulse_gen(bus)
time.sleep(1) time.sleep(1)
# Generate pulses from different outputs to inputs # Generate pulses & test correct reception
msg = "Testing channel connections (term. OFF): Out1 -> In" pulse_test(bus, inf, pel, 1, term)
print(msg)
mux_sel(bus, 0x1)
inf.write('\n')
inf.write(msg+'\n')
en_pulse_gen(bus)
time.sleep(2)
dis_pulse_gen(bus)
check_counters(pc, inf, pel)
clear_counters(pc)
time.sleep(1)
msg = "Testing channel connections (term. OFF): Out2 -> In" pulse_test(bus, inf, pel, 2, term)
print(msg)
mux_sel(bus, 0x2)
inf.write('\n')
inf.write(msg+'\n')
en_pulse_gen(bus)
time.sleep(2)
dis_pulse_gen(bus)
check_counters(pc, inf, pel)
clear_counters(pc)
time.sleep(1)
msg = "Testing channel connections (term. OFF): Out3 -> In" pulse_test(bus, inf, pel, 3, term)
print(msg)
mux_sel(bus, 0x3)
inf.write('\n')
inf.write(msg+'\n')
en_pulse_gen(bus)
time.sleep(2)
dis_pulse_gen(bus)
check_counters(pc, inf, pel)
clear_counters(pc)
time.sleep(1)
# Disable multiplexer # Disable multiplexer
print("Disabling multiplexers") print("Disabling multiplexers")
...@@ -277,10 +263,21 @@ def main(bus, tname, inf, log): ...@@ -277,10 +263,21 @@ def main(bus, tname, inf, log):
#-------------------------- #--------------------------
# Test with terminations ON # Test with terminations ON
#-------------------------- #--------------------------
term = "ON"
inf.write('\n') inf.write('\n')
msg = "Enabling input and output terminations"
print(msg)
inf.write(msg + '\n')
bus.vv_write(TER, (0x3f << TER_OTERM_OFS) | (0x3f << TER_ITERM_OFS))
time.sleep(2)
# Read out fail-safe lines -- should now be high, since the MUXes are # Read out fail-safe lines -- should now be high, since the MUXes are
# powered but not enabled # powered but not enabled
msg = "Testing RS-485 fail-safe on open-connection case (term. %s)" % term
print(msg)
inf.write('\n')
inf.write(msg+'\n')
val = bus.vv_read(LSR) val = bus.vv_read(LSR)
val >>= LSR_REARFS_OFS val >>= LSR_REARFS_OFS
if (val == 0x3f): if (val == 0x3f):
...@@ -292,12 +289,6 @@ def main(bus, tname, inf, log): ...@@ -292,12 +289,6 @@ def main(bus, tname, inf, log):
inf.write('\n') inf.write('\n')
msg = "Enabling input and output terminations"
print(msg)
inf.write(msg + '\n')
bus.vv_write(TER, (0x3f << TER_OTERM_OFS) | (0x3f << TER_ITERM_OFS))
time.sleep(2)
# Enable multiplexer # Enable multiplexer
print("Enabling multiplexers") print("Enabling multiplexers")
val = bus.vv_read(CSR) val = bus.vv_read(CSR)
...@@ -305,12 +296,12 @@ def main(bus, tname, inf, log): ...@@ -305,12 +296,12 @@ def main(bus, tname, inf, log):
bus.vv_write(CSR, val) bus.vv_write(CSR, val)
time.sleep(1) time.sleep(1)
msg = "Testing RS-485 fail-safe on short-circuit case (term. ON)" # Fail-safe test
msg = "Testing RS-485 fail-safe on short-circuit case (term. %s)" % term
print(msg) print(msg)
mux_sel(bus, 0x0) mux_sel(bus, 0x0)
inf.write('\n') inf.write('\n')
inf.write(msg+'\n') inf.write(msg+'\n')
en_pulse_gen(bus)
val = bus.vv_read(LSR) val = bus.vv_read(LSR)
val >>= LSR_REARFS_OFS val >>= LSR_REARFS_OFS
if (val == 0x3f): if (val == 0x3f):
...@@ -319,45 +310,14 @@ def main(bus, tname, inf, log): ...@@ -319,45 +310,14 @@ def main(bus, tname, inf, log):
else: else:
msg = "ERROR: Failsafe lines readout (0x%02X) incorrect - expected 0x3F" % val msg = "ERROR: Failsafe lines readout (0x%02X) incorrect - expected 0x3F" % val
pel.set(msg) pel.set(msg)
dis_pulse_gen(bus)
time.sleep(1) time.sleep(1)
# Generate pulses from different outputs to inputs # Generate pulses & test correct reception
msg = "Testing channel connections (term. ON): Out1 -> In" pulse_test(bus, inf, pel, 1, term)
print(msg)
mux_sel(bus, 0x1)
inf.write('\n')
inf.write(msg+'\n')
en_pulse_gen(bus)
time.sleep(2)
dis_pulse_gen(bus)
check_counters(pc, inf, pel)
clear_counters(pc)
time.sleep(1)
msg = "Testing channel connections (term. ON): Out2 -> In" pulse_test(bus, inf, pel, 2, term)
print(msg)
mux_sel(bus, 0x2)
inf.write('\n')
inf.write(msg+'\n')
en_pulse_gen(bus)
time.sleep(2)
dis_pulse_gen(bus)
check_counters(pc, inf, pel)
clear_counters(pc)
time.sleep(1)
msg = "Testing channel connections (term. ON): Out3 -> In" pulse_test(bus, inf, pel, 3, term)
print(msg)
mux_sel(bus, 0x3)
inf.write('\n')
inf.write(msg+'\n')
en_pulse_gen(bus)
time.sleep(2)
dis_pulse_gen(bus)
check_counters(pc, inf, pel)
clear_counters(pc)
time.sleep(1)
# Disable multiplexer # Disable multiplexer
print("Disabling multiplexers") print("Disabling multiplexers")
......
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