From ac2fed8ee440bfd56c0fcf4d62dda68aa61c9d3c Mon Sep 17 00:00:00 2001
From: Tony Cao <tonycao@kanghexin.work>
Date: Fri, 11 Sep 2026 21:17:46 +0800
Subject: [PATCH] feat: HOSTDEMO_KNOWN env to override show-mode fixture UID
 list (for emulated-Butler interop tests)

---
 src/hostdemo.rs | 26 +++++++++++++++++++++-----
 1 file changed, 21 insertions(+), 5 deletions(-)

diff --git a/src/hostdemo.rs b/src/hostdemo.rs
index 56a2844..b9835c2 100644
--- a/src/hostdemo.rs
+++ b/src/hostdemo.rs
@@ -503,11 +503,27 @@ pub fn run(target: &str, bind_ip: &str, secs: u64) {
         println!("[{}] 认领完成 B12=0x{:08x}; {}", label, bc,
                  if is_show { "地址1-32 炫彩呼吸 (零模板纯自构造 DMX+RDM)" } else { "verbatim DMX + 模板 RDM" });
         let rdm_t: Option<Vec<u8>> = base_rdm;
-        let known: [[u8; 6]; 3] = [
-            [0x01, 0x07, 0x34, 0x67, 0x01, 0x25],
-            [0x01, 0x07, 0x34, 0x88, 0x09, 0x00],
-            [0x08, 0x99, 0x50, 0x00, 0x26, 0xc9],
-        ];
+        // HOSTDEMO_KNOWN=uid12hex[,uid12hex...] 覆盖默认灯具清单
+        // (用于对测仿真 Butler/其他 UID 的设备; 默认 = 台架 3 台真灯)
+        let known: Vec<[u8; 6]> = match std::env::var("HOSTDEMO_KNOWN") {
+            Ok(v) if !v.trim().is_empty() => v
+                .split(',')
+                .filter_map(|s| {
+                    let s = s.trim();
+                    if s.len() != 12 { return None; }
+                    let mut u = [0u8; 6];
+                    for i in 0..6 {
+                        u[i] = u8::from_str_radix(&s[i * 2..i * 2 + 2], 16).ok()?;
+                    }
+                    Some(u)
+                })
+                .collect(),
+            _ => vec![
+                [0x01, 0x07, 0x34, 0x67, 0x01, 0x25],
+                [0x01, 0x07, 0x34, 0x88, 0x09, 0x00],
+                [0x08, 0x99, 0x50, 0x00, 0x26, 0xc9],
+            ],
+        };
         let start = Instant::now();
         let mut di = 0usize;
         let mut qseq: u16 = 0;