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Gkiokan/gist:8aefe4cdb439e4bf2c6c6fda1f7857db

Created March 8, 2026 15:15
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pa5x ribbon controll board debugg
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gistfile1.txt
[FOUND] I2C device found at address 0x0B
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Gkiokan commented Mar 9, 2026

## Your Packet Structure Summary

Based on this function and the ones before it, your 6-byte packet likely looks like this:

Byte Offset | Value / Meaning | Source -- | -- | -- 0 | 0x12 (Header) | Hardcoded in 0d10 1 | 0x06 (Length) | Hardcoded in 0d10 2 | param_1 (Zone/ID) | Input to 0d10 3 | X-Coordinate | From FUN_00001880 4 | Y-Coordinate | From FUN_00001880 5 | Checksum / Status | Calculated before buffer push

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Gkiokan commented Mar 9, 2026

We found several "Magic Numbers" that you will need for your ESP32 code:

0x230: A flag indicating if an averaging cycle is complete.

0x0D: A special state (likely "Calibration Mode" or "Deep Sleep").

0x12: Again, confirming the Start Header for all outgoing data.

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Gkiokan commented Mar 10, 2026

https://community.infineon.com/t5/PSOC-4/Which-protocol-over-I2C-is-used-for-CapSense-tuning/m-p/171654#.
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