# Android-TimedBootDriver **Repository Path**: yuangu/Android-TimedBootDriver ## Basic Information - **Project Name**: Android-TimedBootDriver - **Description**: No description available - **Primary Language**: Unknown - **License**: Not specified - **Default Branch**: master - **Homepage**: None - **GVP Project**: No ## Statistics - **Stars**: 0 - **Forks**: 0 - **Created**: 2024-08-23 - **Last Updated**: 2024-08-23 ## Categories & Tags **Categories**: Uncategorized **Tags**: None ## README # Android定时开机功能 此方案用于实现Android主板的定时开机与Watchdog功能,应用于一些特殊产品,如:广告机、自动售货机等。 ## 框图 ![](framework.png) ## 原理图 ![](sch.png) ## 说明 1. Watch Dog Watch Dog功能默认关闭,直到Android发送命令打开Watch Dog功能。如果Watch Dog功处于打开状态,Android系统会在小于Watch Dog超时时长内定时发送心跳数据给MCU,如果Watch Dog超时时长到,仍未收到心跳数据,则拉低RESET引脚10ms,使CPU复位重启。 2. 定时开机 当MCU收到数据后启动计时,时间到拉低POWER引脚10ms,使CPU开机,同时清除本次定时任务,直到下次CPU重新下发新的定时任务。 ## 协议 通信接口为I2C,从机地址:0x61 功能 | 命令 | 数据 | R/W ---|---|---|--- 心跳 | 0x01 | 0x55 | W 定时开机 | 0x02 | 4bytes (倒计时,单位:秒,最大值为1年的秒数:31536000,大端模式高位在前) 0x00:取消定时开机| W 开关Watch Dog | 0x03 | 0x01:打开 0x02:关闭 默认:关闭 | W 设置Watch Dog超时时长 | 0x04 | 2bytes (倒计时,单位:秒,最大值:65535,大端模式高位在前) 默认:180秒(3分钟) | W ## 使用 1. 复制 n76e003 到 kernel/drivers/misc/ 目录下. 2. 修改 kernel/drivers/misc/Kconfig: ``` source "drivers/misc/n76e003/Kconfig" ``` 3. 修改 kernel/drivers/misc/Makefile: ``` obj-$(CONFIG_N76E003_DRIVER) += n76e003/ ``` 4. 修改 dts ``` &i2c2 { status = "okay"; n76e003@61 { compatible = "nuvoton,n76e003"; reg = <0x61>; status = "okay"; }; }; ``` 5. 移植 frameworks.patch ## 开发者 * ayst.shen@foxmail.com ## License Copyright (C) 2016 - 2017 Topband. Ltd. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be a reference to you, when you are integrating the nuvoTon's N76E003 IC into your system, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.