From: bugzilla-daemon@kernel.org
To: linux-iio@vger.kernel.org
Subject: [Bug 220543] New: MCP3428 scaling values are incorrect, three orders of magnitude low
Date: Sat, 06 Sep 2025 23:42:16 +0000 [thread overview]
Message-ID: <bug-220543-217253@https.bugzilla.kernel.org/> (raw)
https://bugzilla.kernel.org/show_bug.cgi?id=220543
Bug ID: 220543
Summary: MCP3428 scaling values are incorrect, three orders of
magnitude low
Product: Drivers
Version: 2.5
Hardware: All
OS: Linux
Status: NEW
Severity: normal
Priority: P3
Component: IIO
Assignee: drivers_iio@kernel-bugs.kernel.org
Reporter: phil@munts.net
Regression: No
The values for in_voltageY_scale that the 6.12 kernel generates for the MCP3428
ADC are too low by a factor of 1000.
The ADS1115 and the MCP3204 get in_voltageY_scale values around 1.0 (implying
millivolts per ADC step) while the MCP3428 gets values around 0.001 and lower
(implying microvolts per ADC step).
See also: https://forums.raspberrypi.com/viewtopic.php?t=391674
--
You may reply to this email to add a comment.
You are receiving this mail because:
You are watching the assignee of the bug.
next reply other threads:[~2025-09-06 23:42 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-06 23:42 bugzilla-daemon [this message]
2025-09-28 10:59 ` [Bug 220543] New: MCP3428 scaling values are incorrect, three orders of magnitude low Jonathan Cameron
2025-09-28 10:59 ` [Bug 220543] " bugzilla-daemon
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=bug-220543-217253@https.bugzilla.kernel.org/ \
--to=bugzilla-daemon@kernel.org \
--cc=linux-iio@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox