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tests: Add ISM330DL temperature to multidriver comparison scenario. #122

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Merged
nedseb merged 2 commits into from
Mar 14, 2026
Merged

tests: Add ISM330DL temperature to multidriver comparison scenario. #122

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20cdb05
tests: Add ISM330DL temperature to multidriver comparison scenario.
nedseb Mar 14, 2026
6a24ff0
tests: Add stabilization delay after ISM330DL init in comparison.
nedseb Mar 14, 2026
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28 changes: 24 additions & 4 deletions tests/scenarios/board_temperature_comparison.yaml
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Original file line number Diff line number Diff line change
Expand Up @@ -10,6 +10,7 @@ drivers:
- wsen-hids
- wsen-pads
- lis2mdl
- ism330dl

tests:
- name: "Read all temperature sensors"
Expand All @@ -20,6 +21,7 @@ tests:
sys.path.insert(0, '/remote/wsen-hids')
sys.path.insert(0, '/remote/wsen-pads')
sys.path.insert(0, '/remote/lis2mdl')
sys.path.insert(0, '/remote/ism330dl')

from machine import I2C
from time import sleep_ms
Expand Down Expand Up @@ -52,6 +54,12 @@ tests:
mag = LIS2MDL(i2c)
temps['LIS2MDL'] = mag.read_temperature_c()

# ISM330DL (auxiliary, offset not guaranteed by datasheet)
from ism330dl.device import ISM330DL
imu = ISM330DL(i2c)
sleep_ms(200) # stabilize after reset
temps['ISM330DL'] = imu.temperature_c()

# Print comparison table
print('--- Temperature Comparison ---')
for name, t in temps.items():
Expand Down Expand Up @@ -108,6 +116,7 @@ tests:
sys.path.insert(0, '/remote/wsen-hids')
sys.path.insert(0, '/remote/wsen-pads')
sys.path.insert(0, '/remote/lis2mdl')
sys.path.insert(0, '/remote/ism330dl')

from machine import I2C
from time import sleep_ms
Expand All @@ -131,6 +140,10 @@ tests:
from lis2mdl.device import LIS2MDL
mag = LIS2MDL(i2c)

from ism330dl.device import ISM330DL
imu = ISM330DL(i2c)
sleep_ms(200) # stabilize after reset

# Read reference just before each sensor to minimize drift
ref_t = ref.temperature()
hts_t = hts.temperature()
Expand All @@ -141,34 +154,41 @@ tests:
ref_t3 = ref.temperature()
mag_t = mag.read_temperature_c()

ref_t4 = ref.temperature()
imu_t = imu.temperature_c()

print('--- Before offset alignment ---')
print(' WSEN-HIDS (ref): ' + str(round(ref_t, 2)) + ' C')
print(' HTS221: ' + str(round(hts_t, 2)) + ' C')
print(' WSEN-PADS: ' + str(round(pads_t, 2)) + ' C')
print(' LIS2MDL: ' + str(round(mag_t, 2)) + ' C')
print(' ISM330DL: ' + str(round(imu_t, 2)) + ' C')

spread_before = max(hts_t, pads_t, mag_t, ref_t) - min(hts_t, pads_t, mag_t, ref_t)
spread_before = max(hts_t, pads_t, mag_t, imu_t, ref_t) - min(hts_t, pads_t, mag_t, imu_t, ref_t)
print(' Spread: ' + str(round(spread_before, 2)) + ' C')

# Apply offset to align each sensor to the reference reading
hts.set_temp_offset(ref_t - hts_t)
pads.set_temp_offset(ref_t2 - pads_t)
mag.set_temp_offset(ref_t3 - mag_t)
imu.set_temp_offset(ref_t4 - imu_t)

# Re-read after offset alignment
sleep_ms(50)
ref_t4 = ref.temperature()
ref_t5 = ref.temperature()
hts_t2 = hts.temperature()
pads_t2 = pads.temperature()
mag_t2 = mag.read_temperature_c()
imu_t2 = imu.temperature_c()

print('--- After offset alignment ---')
print(' WSEN-HIDS (ref): ' + str(round(ref_t4, 2)) + ' C')
print(' WSEN-HIDS (ref): ' + str(round(ref_t5, 2)) + ' C')
print(' HTS221: ' + str(round(hts_t2, 2)) + ' C')
print(' WSEN-PADS: ' + str(round(pads_t2, 2)) + ' C')
print(' LIS2MDL: ' + str(round(mag_t2, 2)) + ' C')
print(' ISM330DL: ' + str(round(imu_t2, 2)) + ' C')

spread_after = max(hts_t2, pads_t2, mag_t2, ref_t4) - min(hts_t2, pads_t2, mag_t2, ref_t4)
spread_after = max(hts_t2, pads_t2, mag_t2, imu_t2, ref_t5) - min(hts_t2, pads_t2, mag_t2, imu_t2, ref_t5)
print(' Spread: ' + str(round(spread_after, 2)) + ' C')

# After alignment, spread should be < 2°C
Expand Down