Fix INA226 detection for non-TI compatible chip (Silergy)#10247
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Closing this PR for now. It appears that the Silergy SQ52201 is not fully compatible with INA226. I will revisit logic. |
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Reopening this PR — closed it by mistake. During additional testing of the SQ52201 support and compatiblity, I accidentally used a defective module unit, which produced incorrect readings and made it look like the changes were broken. The code itself is ready for review. |
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Pull request overview
This PR updates the I2C auto-detection logic to correctly recognize an INA226-compatible Silergy SQ52201 current/power monitor (which shares the 0x40 address with SHT2x sensors), preventing it from being misdetected as an SHT2x device.
Changes:
- Adds explicit MFG/DIE ID matching for Silergy SQ52201 to be treated as
INA226. - Refines INA226 vs INA260 identification using both MFG and DIE IDs (for TI INA226) and MFG-only fallback (for TI INA260).
- Keeps the SHT2x serial-number probe as a fallback when INA IDs don’t match.
fifieldt
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Apr 22, 2026
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Thanks for the detailed work!
…x40 (including real SHT2x sensors). Changes suggested by Copilot Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>
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May 6, 2026
…#10247) * Fix INA226 detection for non-TI compatible chip (Silergy) * Removed extra I2C transaction + 20ms delay on every scan of address 0x40 (including real SHT2x sensors). Changes suggested by Copilot Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com> * Apply formatting (trunk fmt) --------- Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>
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Fix incorrect SHTXX detection for INA226-compatible sensor Silergy SQ52201
Problem
Popular cheap INA226-compatible current/power monitor chip Silergy SQ52201 is incorrectly detected as
SHTXX (SHT2X).(These chips are commonly found on modules sold as “INA226” or even misrepresented as TI parts, so users may be unaware they are using Silergy silicon instead of Texas Instruments).
This happens due to strict Manufacturer ID check (only TI
0x5449accepted)Root cause
INA2xx-compatible chips do not always use TI's Manufacturer ID:
Current logic only accepts
0x5449, causing valid compatible devices to fall through to SHT detection.Changes
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