low cost power shield solution #95056

hakehuang · 2025-08-27T11:24:06Z

Create adc_power_shield sample for any board with adc can be used for power measurement.
Add general_adc_platform power shiled, which can be used for power measurement with the sample application.
the power data is stored in the power_shield folder for further analysis

hakehuang · 2025-08-27T11:25:03Z

log for mimxrt595_evk board

((.venv) ) ubuntu@ubuntu-OptiPlex-7050:/home/shared/disk/zephyr_project/zephyr_test/zephyr$ scripts/twister --device-testing --hardware-map /home/ubuntu/nxp/mimxrt595_evk_cm33/map.yaml -T samples/boards/nxp/mimxrt595_evk/system_off
ZEPHYR_BASE unset, using "/home/shared/disk/zephyr_project/zephyr_test/zephyr"
Renaming previous output directory to /home/shared/disk/zephyr_project/zephyr_test/zephyr/twister-out.1
INFO    - Using Ninja..
INFO    - Zephyr version: v4.2.0-2411-g0f6f916cbaa4
INFO    - Using 'zephyr' toolchain.
INFO    - Building initial testsuite list...
INFO    - Writing JSON report /home/shared/disk/zephyr_project/zephyr_test/zephyr/twister-out/testplan.json

Device testing on:

| Platform                      |        ID | Serial device                                         |
|-------------------------------|-----------|-------------------------------------------------------|
| mimxrt595_evk/mimxrt595s/cm33 | 727562924 | /dev/serial/by-id/usb-SEGGER_J-Link_000727562924-if00 |

INFO    - JOBS: 8
INFO    - Adding tasks to the queue...
INFO    - Added initial list of jobs to queue
INFO    - Total complete:    1/   1  100%  built (not run):    0, filtered:    0, failed:    0, error:    0
INFO    - 1 test scenarios (1 configurations) selected, 0 configurations filtered (0 by static filter, 0 at runtime).
INFO    - 1 of 1 executed test configurations passed (100.00%), 0 built (not run), 0 failed, 0 errored, with no warnings in 29.99 seconds.
INFO    - 1 of 1 executed test cases passed (100.00%) on 1 out of total 1154 platforms (0.09%).
INFO    - 1 test configurations executed on platforms, 0 test configurations were only built.

enable power shield testing on mimxrt595_evk ``` scripts/twister --device-testing --device-serial /dev/ttyACM0 -T samples/boards/nxp/mimxrt595_evk/system_off -X pm_probe:/dev/ttyACM1,115200 ``` an power_shield folder will be created in the build path whith measured voltage/current/power Signed-off-by: Hake Huang <[email protected]>

JarmouniA · 2025-08-27T11:52:20Z

samples/drivers/adc/adc_power_shield/sample.yaml

Please take a look at #94585, and only keep 1 platform per vendor.

thanks @JarmouniA PR #94585 looks good, I will update according after your PR merged

There is no need to wait for it to be merged, just apply the same filtering and only keep overlay/conf of 1 platform per vendor in the new sample.

nordicjm · 2025-08-27T12:49:21Z

samples/drivers/adc/adc_power_shield/Kconfig

+
+config SEQUENCE_32BITS_REGISTERS
+	bool "ADC data sequences are on 32bits"
+	default n


Suggested change

default n

nordicjm · 2025-08-27T12:49:35Z

samples/drivers/adc/adc_power_shield/boards/arduino_due.overlay

+		zephyr,input-positive = <6>;
+		zephyr,vref-mv = <3300>;
+	};
+	channel@7 { // Connector A0


newline line 35

nordicjm · 2025-08-27T12:50:00Z

samples/drivers/adc/adc_power_shield/boards/frdm_mcxc444.overlay

+		zephyr,acquisition-time = <ADC_ACQ_TIME_DEFAULT>;
+		zephyr,resolution = <12>;
+	};
+	channel@3 {


newline between nodes

nordicjm · 2025-08-27T12:50:35Z

samples/drivers/adc/adc_power_shield/boards/s32k148_evb.overlay

+	pinctrl-0 = <&adc0_default>;
+	pinctrl-names = "default";


move above child node

samples/drivers/adc/adc_power_shield/boards/s32z2xxdc2_s32z270_rtu0.overlay

add power_shield sample for general_adc_platform power shiled, to record power/voltage/current Signed-off-by: Hake Huang <[email protected]>

1. general power shield work with the adc_power_shield sample 2. config samples to config probe 3. add readme Signed-off-by: Hake Huang <[email protected]>

sonarqubecloud · 2025-08-28T08:29:02Z

Quality Gate passed

Issues
9 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
2.4% Duplication on New Code

See analysis details on SonarQube Cloud

dsseng

Thanks, this is a really great addition

dsseng · 2025-08-29T17:04:09Z

scripts/pylib/power-twister-harness/requirements-dev.txt

+# Additional development tools
+ipython>=8.0.0
+jupyter>=1.0.0


Are these actually used here?

dsseng · 2025-08-29T17:05:29Z

scripts/pylib/power-twister-harness/utils/UartSettings.py

+# Set UTF-8 encoding for stdout/stderr
+os.environ['PYTHONIOENCODING'] = 'utf-8'
+
+# For Python 3.7+, you can also reconfigure stdout/stderr
+if hasattr(sys.stdout, 'reconfigure'):
+    sys.stdout.reconfigure(encoding='utf-8')
+    sys.stderr.reconfigure(encoding='utf-8')


Move this under def main or __name__ == "__main__" so that the module is cleanly importable?

zephyrbot added area: ADC Analog-to-Digital Converter (ADC) platform: NXP NXP area: Twister Twister area: Samples Samples labels Aug 27, 2025

zephyrbot requested review from anangl, butok, decsny, DerekSnell, dleach02, EmilioCBen, gchwier, golowanow, JarmouniA, KamilxPaszkiet, kartben, LukaszMrugala, mmahadevan108, nashif and PerMac August 27, 2025 11:25

zephyrbot assigned kartben Aug 27, 2025

hakehuang force-pushed the lc_power_shield branch 4 times, most recently from 59e3ca2 to 8f0f3f4 Compare August 27, 2025 12:24

JarmouniA reviewed Aug 27, 2025

View reviewed changes

nordicjm requested changes Aug 27, 2025

View reviewed changes

hakehuang marked this pull request as draft August 28, 2025 03:32

hakehuang force-pushed the lc_power_shield branch from 8f0f3f4 to c19dcd6 Compare August 28, 2025 03:37

hakehuang force-pushed the lc_power_shield branch 5 times, most recently from a113789 to cd51acf Compare August 28, 2025 07:31

hakehuang requested review from nordicjm and JarmouniA August 28, 2025 08:00

hakehuang marked this pull request as ready for review August 28, 2025 08:01

hakehuang added 2 commits August 28, 2025 16:20

samples: adc: add power shield application

dabdda8

add power_shield sample for general_adc_platform power shiled, to record power/voltage/current Signed-off-by: Hake Huang <[email protected]>

tests: scripts: add general power shield support

b5f1df0

1. general power shield work with the adc_power_shield sample 2. config samples to config probe 3. add readme Signed-off-by: Hake Huang <[email protected]>

hakehuang force-pushed the lc_power_shield branch from cd51acf to b5f1df0 Compare August 28, 2025 08:21

dsseng reviewed Aug 29, 2025

View reviewed changes

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low cost power shield solution #95056

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low cost power shield solution #95056

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low cost power shield solution #95056

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