feat(basic_demo): sync builtin lua scripts from components

2026-05-20 11:51:49 -07:00 · 2026-04-22 13:04:31 +08:00
parent 4ec43962c5
commit 4428109112
25 changed files with 537 additions and 180 deletions
@@ -0,0 +1,86 @@
+-- Button event demo (polling). Optional args: pin, active_level, duration_ms, poll_ms (integers).
+-- Pattern: open hardware in run(), xpcall(run) + cleanup() + rethrow — copy this skeleton, not ad-hoc early returns.
+local btn   = require("button")
+local delay = require("delay")
+
+local a = type(args) == "table" and args or {}
+local function int_arg(k, default)
+    local v = a[k]
+    if type(v) == "number" then
+        return math.floor(v)
+    end
+    return default
+end
+
+local cfg_pin      = int_arg("pin", 0)
+local active_level = int_arg("active_level", 0)
+local duration_ms  = int_arg("duration_ms", 30000)
+local poll_ms      = int_arg("poll_ms", 10)
+
+local handle
+
+local function cleanup()
+    if handle then
+        pcall(btn.off, handle)
+        pcall(btn.close, handle)
+        handle = nil
+    end
+end
+
+local function run()
+    local h, herr = btn.new(cfg_pin, active_level)
+    if not h then
+        error("[button_demo] button.new failed: " .. tostring(herr))
+    end
+    handle = h
+
+    print("[button_demo] button handle created on gpio " .. tostring(cfg_pin))
+
+    local level, lerr = btn.get_key_level(handle)
+    if level == nil then
+        print("[button_demo] ERROR: get_key_level: " .. tostring(lerr))
+    else
+        print("[button_demo] initial key level: " .. tostring(level))
+    end
+
+    btn.on(handle, "press_down", function(info)
+        print("[button_demo] press_down  (pressed_time=" .. tostring(info.pressed_time_ms) .. "ms)")
+    end)
+
+    btn.on(handle, "press_up", function(info)
+        print("[button_demo] press_up    (pressed_time=" .. tostring(info.pressed_time_ms) .. "ms)")
+    end)
+
+    btn.on(handle, "single_click", function()
+        print("[button_demo] single_click")
+    end)
+
+    btn.on(handle, "double_click", function()
+        print("[button_demo] double_click")
+    end)
+
+    btn.on(handle, "long_press_start", function(info)
+        print("[button_demo] long_press_start (pressed_time=" .. tostring(info.pressed_time_ms) .. "ms)")
+    end)
+
+    btn.on(handle, "long_press_up", function(info)
+        print("[button_demo] long_press_up   (pressed_time=" .. tostring(info.pressed_time_ms) .. "ms)")
+    end)
+
+    print(string.format(
+        "[button_demo] listening for %d ms (poll=%dms), press the button...",
+        duration_ms, poll_ms))
+
+    local iters = math.max(1, math.floor(duration_ms / poll_ms))
+    for _ = 1, iters do
+        btn.dispatch()
+        delay.delay_ms(poll_ms)
+    end
+end
+
+local run_ok, run_err = xpcall(run, debug.traceback)
+cleanup()
+print("[button_demo] done")
+if not run_ok then
+    error(run_err)
+end