64 lines
1.6 KiB
Python
64 lines
1.6 KiB
Python
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#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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"""全局常量与默认值。"""
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import os
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# ---- input 事件协议（IN1/event 后端用）----
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EV_KEY = 0x01
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KEY_UP = 103
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VALUE_RELEASE = 0
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VALUE_PRESS = 1
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VALUE_REPEAT = 2
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DEFAULT_EVENT_DEVICE = "/dev/input/event1"
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GPIO_KEYS_NAME = "gpio-keys"
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# ---- IN 通道编号 ----
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IN1_INDEX = 1
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IN2_INDEX = 2
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# IN2 硬件信息（用于 --check 复算）
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IN2_GPIO_NUM = 483
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IN2_GPIOCHIP = 480
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# ---- sysfs 状态文件候选路径 ----
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# 按 in_index 分组，每个通道可以有多个候选路径，按顺序尝试
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STATUS_CANDIDATES = {
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1: [
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"/sys/bus/platform/devices/gpio-in-1/gpio_status",
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"/dev/tv_gpioin_1",
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# SE9 若有其它路径，加到这里
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],
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2: [
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"/sys/bus/platform/devices/gpio-in-2/gpio_status",
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"/dev/tv_gpioin_2",
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],
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}
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STATUS_FILE_ENV = "DI_STATUS_FILE" # 测试用覆盖
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LOG_DIR_ENV = "DI_LOG_DIR"
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DEVICETREE_BASE = "/sys/firmware/devicetree/base"
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DEBOUNCE = 2 # 连续多少次采样一致才确认跳变
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DEFAULT_INTERVAL = 0.02 # 轮询间隔秒
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def candidate_status_files(in_index: int):
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"""返回某通道的所有候选状态文件路径（含环境变量覆盖）。"""
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paths = []
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env = os.environ.get(STATUS_FILE_ENV)
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if env:
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paths.append(env)
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paths.extend(STATUS_CANDIDATES.get(in_index, []))
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return paths
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def find_status_file(in_index: int):
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"""找到第一个可读的状态文件；找不到返回 None。"""
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for p in candidate_status_files(in_index):
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if os.access(p, os.R_OK):
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return p
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return None
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