القائمة
Diagnose ARGB vs ABGR byte-order mismatches when IoT device colors render wrong after an RGB setColor call.
التثبيت باستخدام Codex أو Claude انسخ هذا Prompt والصقه في Codex أو Claude أو مساعد آخر ليراجع صفحة Skill ويثبّتها لك.
استنادا إلى تصنيف SOC المهني
Pattern for keeping a rolling temperature-trend sample buffer in Hubitat state, computing slope over a configurable window, and classifying rising/falling/steady/unknown.
Implement Tuya Local v3.3 Groovy drivers on Hubitat using rawSocket, AES-128-ECB, queued retries, and defensive frame parsing.
Use Hubitat async HTTP plus a request queue to authenticate with Cognito, cache tokens in state, refresh proactively, and replay a single 401-failed request.
When two agents produce overlapping skills in one session, consolidate by merging unique content into the highest-confidence existing skill.
Never let cached-state dedup bypass session validity in cloud-backed Hubitat drivers.
Standard guard pattern for async HTTP response callbacks in Hubitat drivers
| name | iot-color-byte-order-diagnosis |
| description | Diagnose ARGB vs ABGR byte-order mismatches when IoT device colors render wrong after an RGB setColor call. |
| domain | iot-drivers |
| confidence | high |
| source | earned |
This skill applies when an IoT device driver packs a color as a 32-bit integer and sends it to a cloud API, but the rendered color on the physical device differs from what was requested.
When you observe:
…this is the exact empirical signature of an ARGB vs ABGR byte-order mismatch.
In a 32-bit color word 0xAA_XX_GG_YY, green always occupies the middle byte (bits 15–8). Swapping the R and B byte positions does not move green — so green-channel colors appear correct while red and blue are swapped.
0xAARRGGBB (ARGB)0xAABBGGRR (ABGR)Swap the R and B byte positions in every color-packing function:
// WRONG (ARGB): R at bits 23-16, B at bits 7-0
return ((0xFFL << 24) | ((r & 0xFFL) << 16) | ((g & 0xFFL) << 8) | (b & 0xFFL)) as Long
// CORRECT (ABGR): B at bits 23-16, R at bits 7-0
return ((0xFFL << 24) | ((b & 0xFFL) << 16) | ((g & 0xFFL) << 8) | (r & 0xFFL)) as Long
Also reverse the assignment in any color-unpacking function (reading ABGR back into r/g/b variables):
// ABGR unpack: high data byte is B, low data byte is R
float b = ((argbLong >> 16) & 0xFFL) / 255.0f
float g = ((argbLong >> 8) & 0xFFL) / 255.0f
float r = (argbLong & 0xFFL) / 255.0f
Gemstone Lights cloud API (AWS API Gateway, mytpybpq12.execute-api.us-west-2.amazonaws.com) confirmed ABGR wire format in v0.4.5 empirical testing (2026-05-16). Pure red 0xFFFF0000 packed as ARGB → device displayed blue. Fix: swap to ABGR encoding.
| Sent (ARGB packed) | Device interprets as (ABGR) | Visible color |
|---|---|---|
0xFFFF0000 (red) | R=0, G=0, B=255 | Blue |
0xFF00FF00 (green) | R=0, G=255, B=0 | Green ✓ |
0xFF0000FF (blue) | R=255, G=0, B=0 | Red |