tuyaopen-peripheral-button

name	tuyaopen/peripheral-button
description	TDL button input handling for TuyaOpen: create button, register event callbacks for single click, double click, long press, and multi-click. 按键、单击、双击、长按、多击、按键事件。
when_to_use	Use when the user wants to detect button presses: single click, double click, long press start/hold, or multi-click events.
id	peripheral-button
surfaces	["embedded"]
tags	["button","gpio","input","event"]

TuyaOpen TDL Button

Driver Registration (TDD)

Decide by adaptation, not by whether the SDK has the driver — tdd_gpio_button ships in the SDK either way:

• Board-adapted button (listed in board-context.md) → board_register_hardware() registers it automatically; write no TDD code.
• Externally-attached button (the user wired their own button — NOT in board-context.md, e.g. "extra button on GPIO7") → register it yourself in usr_board (see usr-board/SKILL.md). You still reuse the existing tdd_gpio_button_register — board_register_hardware() does not wire a button it never adapted. Put the __usr_register_button() below into usr_board.c and call it from usr_register_hardware():

#include "tdd_button_gpio.h"

static OPERATE_RET __usr_register_button(void)
{
    BUTTON_GPIO_CFG_T btn_cfg = {
        .pin              = TUYA_GPIO_NUM_17,      // Pins: btn_0=GPIO17
        .level            = TUYA_GPIO_LEVEL_LOW,   // Pins: btn_0=GPIO17(low)
        .mode             = BUTTON_IRQ_MODE,
        .pin_type.irq_edge = TUYA_GPIO_IRQ_FALL,
    };
    return tdd_gpio_button_register(BUTTON_NAME, &btn_cfg);
}

Pin and active level: for a board-adapted button, read its pins from .tuyaopen/ide/board.json (by ID:); for an externally-attached button, use the GPIO/level the user gave (must be a gpio from board.json.expansionPins).

New button IC with no SDK driver (still in usr_board)

Reusing tdd_gpio_button_register covers ordinary GPIO buttons. Only when the button needs a TDD driver the SDK does not have (e.g. capacitive touch key, I2C keypad) do you also write tdd_button_<ic>.h/.c inside usr_board/ and implement tdl_button_register() with the callbacks. This is an addition to the usr_board flow, not an alternative to it.

---

Headers

#include "tdl_button_manage.h"

Usage Template

#include "tal_api.h"
#include "tkl_output.h"
#include "tdl_button_manage.h"

/* Event callback */
static void button_event_cb(char *name, TDL_BUTTON_TOUCH_EVENT_E event, void *argc)
{
    switch (event) {
    case TDL_BUTTON_PRESS_DOWN:         PR_NOTICE("%s: press down", name);    break;
    case TDL_BUTTON_PRESS_UP:           PR_NOTICE("%s: press up", name);      break;
    case TDL_BUTTON_PRESS_SINGLE_CLICK: PR_NOTICE("%s: single click", name);  break;
    case TDL_BUTTON_PRESS_DOUBLE_CLICK: PR_NOTICE("%s: double click", name);  break;
    case TDL_BUTTON_LONG_PRESS_START:   PR_NOTICE("%s: long press", name);    break;
    default: break;
    }
}

void user_main(void)
{
    tal_log_init(TAL_LOG_LEVEL_DEBUG, 4096, (TAL_LOG_OUTPUT_CB)tkl_log_output);

    /* Prerequisite: board_register_hardware() already called */

    TDL_BUTTON_CFG_T button_cfg = {
        .long_start_valid_time     = 3000, // long-press threshold (ms)
        .long_keep_timer           = 1000, // hold repeat interval (ms)
        .button_debounce_time      = 50,   // debounce (ms)
        .button_repeat_valid_count = 2,    // clicks >= 2 trigger REPEAT event
        .button_repeat_valid_time  = 500,  // multi-click window (ms)
    };

    TDL_BUTTON_HANDLE button_hdl = NULL;
    TUYA_CALL_ERR_GOTO(tdl_button_create(BUTTON_NAME, &button_cfg, &button_hdl), EXIT);

    /* Register only the events you need */
    tdl_button_event_register(button_hdl, TDL_BUTTON_PRESS_SINGLE_CLICK, button_event_cb);
    tdl_button_event_register(button_hdl, TDL_BUTTON_LONG_PRESS_START,   button_event_cb);

EXIT:
    return;
}

API Reference

Function	Description
tdl_button_create(name, &cfg, &hdl)	Create button with timing config
tdl_button_event_register(hdl, event, cb)	Register callback for one event type
tdl_button_delete(hdl)	Delete button and release hardware
tdl_button_read_status(hdl, &status)	Read current state (0=released, 1=pressed)
tdl_button_set_scan_time(ms)	Set scan interval (default 10 ms)

Event Types

Event	Description
TDL_BUTTON_PRESS_DOWN	Pressed
TDL_BUTTON_PRESS_UP	Released
TDL_BUTTON_PRESS_SINGLE_CLICK	Single click
TDL_BUTTON_PRESS_DOUBLE_CLICK	Double click
TDL_BUTTON_PRESS_REPEAT	Multi-click (≥ button_repeat_valid_count times)
TDL_BUTTON_LONG_PRESS_START	Long press start (held ≥ long_start_valid_time ms)
TDL_BUTTON_LONG_PRESS_HOLD	Long press hold (fires every long_keep_timer ms)

Multiple Buttons

#if defined(BUTTON_NAME_2)
TDL_BUTTON_HANDLE button_hdl_2 = NULL;
tdl_button_create(BUTTON_NAME_2, &button_cfg, &button_hdl_2);
tdl_button_event_register(button_hdl_2, TDL_BUTTON_PRESS_SINGLE_CLICK, button_event_cb);
#endif

Enable Macro and NAME Macro

CONFIG_ENABLE_BUTTON=y        # enables button and defines BUTTON_NAME
CONFIG_BUTTON_NAME="button1"  # device name (default "button1")

BUTTON_NAME is passed to tdl_button_create(). Additional buttons use BUTTON_NAME_2, BUTTON_NAME_3 (requires enabling ENABLE_BUTTON_2, etc.).

Reference Example

examples/peripherals/button/