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| author | Tom Hughes <tomhughes@chromium.org> | 2020-06-19 13:46:30 -0700 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2020-07-06 20:55:11 +0000 |
| commit | c069beafbef2d94817acbd9108c93768160f3ae6 (patch) | |
| tree | 7aff06900d8bbc1f298fc90406fe39f5304495e9 /docs | |
| parent | 43e8a4037545bebc77b51854d971cf49fb34a2ac (diff) | |
| download | chrome-ec-c069beafbef2d94817acbd9108c93768160f3ae6.tar.gz | |
docs/fingerprint: Add power measurements
BRANCH=none
BUG=b:148296085
TEST=view in gitiles
Signed-off-by: Tom Hughes <tomhughes@chromium.org>
Change-Id: Ia8dde9ce8dd605777ca8eaf92fa16076bda3ef5a
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2254993
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/fingerprint/fingerprint-dev-for-partners.md | 2 | ||||
| -rw-r--r-- | docs/fingerprint/fingerprint.md | 47 |
2 files changed, 48 insertions, 1 deletions
diff --git a/docs/fingerprint/fingerprint-dev-for-partners.md b/docs/fingerprint/fingerprint-dev-for-partners.md index 6daa64f0f0..130127905d 100644 --- a/docs/fingerprint/fingerprint-dev-for-partners.md +++ b/docs/fingerprint/fingerprint-dev-for-partners.md @@ -324,7 +324,7 @@ Start a fingerprint enrollment: > fpenroll ``` -### Measuring Power +### Measuring Power {#measure-power} The Dragonclaw reference board has an onboard INA that monitors the voltage and power draw of the MCU and FP Sensor independently. diff --git a/docs/fingerprint/fingerprint.md b/docs/fingerprint/fingerprint.md index 899344232f..fc61f08afc 100644 --- a/docs/fingerprint/fingerprint.md +++ b/docs/fingerprint/fingerprint.md @@ -295,6 +295,52 @@ Signature verification succeeded. about adding an EC command to show the Key ID (fingerprint) from the RO version. This would make it a lot easier during both development and testing. +## Power + +See [Measuring Power] for instructions on how to measure power with the +fingerprint development boards. + +### Dragonclaw v0.2 + +```bash +(chroot) $ dut-control -t 60 pp3300_dx_mcu_mv pp3300_dx_fp_mv pp1800_dx_fp_mv pp3300_dx_mcu_mw pp3300_dx_fp_mw pp1800_dx_fp_mw +``` + +**Firmware Version**: `bloonchipper_v2.0.4277-9f652bb3` + +``` +@@ NAME COUNT AVERAGE STDDEV MAX MIN +@@ sample_msecs 128 469.05 33.79 641.75 399.90 +@@ pp1800_dx_fp_mv 128 1802.06 3.50 1808.00 1800.00 +@@ pp1800_dx_fp_mw 128 0.00 0.00 0.00 0.00 +@@ pp3300_dx_fp_mv 128 3296.00 0.00 3296.00 3296.00 +@@ pp3300_dx_fp_mw 128 0.00 0.03 0.26 0.00 +@@ pp3300_dx_mcu_mv 128 3288.00 0.00 3288.00 3288.00 +@@ pp3300_dx_mcu_mw 128 24.20 0.00 24.20 24.20 +``` + +### Dragontalon + +*** note +**NOTE**: The sensor doesn't work on Dragontalon, so the measurements below show +zero for the sensor. +*** + +```bash +(chroot) $ dut-control -t 60 pp3300_h7_mv pp3300_h7_mw pp1800_fpc_mv pp1800_fpc_mw +``` + +**Firmware Version**: `dartmonkey_v2.0.4017-9c45fb4b3` + +``` +@@ NAME COUNT AVERAGE STDDEV MAX MIN +@@ sample_msecs 1502 39.96 13.14 379.43 22.31 +@@ pp1800_fpc_mv 1502 0.00 0.00 0.00 0.00 +@@ pp1800_fpc_mw 1502 0.00 0.00 0.00 0.00 +@@ pp3300_h7_mv 1502 3288.00 0.00 3288.00 3288.00 +@@ pp3300_h7_mw 1502 8.20 0.51 18.08 7.67 +``` + ## Chrome OS Build (portage / ebuild) In order to use the fingerprint sensor with a given [Chrome OS board], a few @@ -435,3 +481,4 @@ detail. [internal manifest]: https://chromium.googlesource.com/chromiumos/docs/+/master/developer_guide.md#get-the-source-code [Unit Tests]: ../unit_tests.md [run the unit tests]: ../unit_tests.md#running +[Measuring Power]: ./fingerprint-dev-for-partners.md#measure-power |