单片机main函数的相关内容

价值 1k 嵌入式面试题-单片机 main 函数之前都做了啥？

开门见山请说下单片机（Arm）在运行到 main() 函数前，都做了哪些工作？常见问题1.系统初始化工作，太泛泛2.硬件初始化，比较不具体答题思路这道题应该从两方面回答，一个是比较表面的硬...

单片机如何从上电复位执行到main函数？

目录1、启动文件2、系统初始化过程3、全局变量的初始化从事嵌入式开发的伙伴可能会思考过一个问题，我们一般都是使用芯片厂商提供的驱动库和初始化文件，直接从main函数开始写程序，那么系统上电之后，程序怎么引导进main函数执行的呢？还有，系统上电之后RAM的数据是随机的，那么定义的全局变量的初始值又是...

共有2条

< 1 >

跳转至： GO

更新时间 2024-03-02 13:46:36

本页面内关键词为智能算法引擎基于机器学习所生成，如有任何问题，可在页面下方点击"联系我们"与我们沟通。

产品推荐

{"moduleinfo":{"card_count":[{"count_phone":1,"count":1}],"search_count":[{"count_phone":2,"count":2}]},"card":[{"des":"方案将阿里云IoT连接通道及设备管理能力高度提炼，通过AT指令将鉴权，连接，设备数据收发能力提供给用户侧MCU，使用户最少通过3条指令就可以完成设备连云及数据交互，大大提高设备接入效率。","link1":"https://www.aliyun.com/solution/iot/aostatfirewear","link":"https://www.aliyun.com/solution/iot/aostatfirewear","icon":"https://img.alicdn.com/tfs/TB1V1raevb2gK0jSZK9XXaEgFXa-200-200.png","btn2":"立即咨询","tip":"更多优质解决方案 <a href=\"https://www.aliyun.com/solution/all \" target=\"_blank\"> 立即查看 <a href=\"https://page.aliyun.com/form/act1851795571/index.htm\" target=\"_blank\">立即咨询","btn1":"方案详情","link2":"https://page.aliyun.com/form/act118567774/index.htm","title":"快速接入AT命令WiFi模组解决方案"}],"search":[{"txt":" 工业产品可信监造","link":"https://www.aliyun.com/solution/iot/securityltl"},{"link":"https://www.aliyun.com/solution/iot/trustidpass","txt":" 可信一证通"}],"countinfo":{"search":{"length_pc":0,"length":0},"card":{"length_pc":0,"length":0}},"simplifiedDisplay":"newEdition","newCard":[{"iconImg":"https://img.alicdn.com/imgextra/i1/O1CN014XEWEW1hMVB3Ydp04_!!6000000004263-0-tps-200-200.jpg","ifIcon":"img","btn1":"方案详情","btn3":"查看更多方案","btn2":"立即咨询","link3":"https://www.aliyun.com/solution/all","link":"https://www.aliyun.com/solution/iot/aostatfirewear","contentLink":"https://www.aliyun.com/solution/iot/aostatfirewear","link1":"https://www.aliyun.com/solution/iot/aostatfirewear","title":"快速接入AT命令WiFi模组解决方案","des":"方案将阿里云IoT连接通道及设备管理能力高度提炼，通过AT指令将鉴权，连接，设备数据收发能力提供给用户侧MCU，使用户最少通过3条指令就可以完成设备连云及数据交互，大大提高设备接入效率。","link2":"https://page.aliyun.com/form/act118567774/index.htm","infoGroup":[{"infoName":"推荐搜索","infoContent":{"firstContentName":" 工业产品可信监造","firstContentLink":"https://www.aliyun.com/solution/iot/securityltl","lastContentName":" 可信一证通","lastContentLink":"https://www.aliyun.com/solution/iot/trustidpass"}}]}]}

{"$env":{"JSON":{}},"$page":{"env":"production"},"$context":{"moduleinfo":{"card_count":[{"count_phone":1,"count":1}],"search_count":[{"count_phone":2,"count":2}]},"card":[{"des":"方案将阿里云IoT连接通道及设备管理能力高度提炼，通过AT指令将鉴权，连接，设备数据收发能力提供给用户侧MCU，使用户最少通过3条指令就可以完成设备连云及数据交互，大大提高设备接入效率。","link1":"https://www.aliyun.com/solution/iot/aostatfirewear","link":"https://www.aliyun.com/solution/iot/aostatfirewear","icon":"https://img.alicdn.com/tfs/TB1V1raevb2gK0jSZK9XXaEgFXa-200-200.png","btn2":"立即咨询","tip":"更多优质解决方案 <a href=\"https://www.aliyun.com/solution/all \" target=\"_blank\"> 立即查看 <a href=\"https://page.aliyun.com/form/act1851795571/index.htm\" target=\"_blank\">立即咨询","btn1":"方案详情","link2":"https://page.aliyun.com/form/act118567774/index.htm","title":"快速接入AT命令WiFi模组解决方案"}],"search":[{"txt":" 工业产品可信监造","link":"https://www.aliyun.com/solution/iot/securityltl"},{"link":"https://www.aliyun.com/solution/iot/trustidpass","txt":" 可信一证通"}],"countinfo":{"search":{"length_pc":0,"length":0},"card":{"length_pc":0,"length":0}},"simplifiedDisplay":"newEdition","newCard":[{"iconImg":"https://img.alicdn.com/imgextra/i1/O1CN014XEWEW1hMVB3Ydp04_!!6000000004263-0-tps-200-200.jpg","ifIcon":"img","btn1":"方案详情","btn3":"查看更多方案","btn2":"立即咨询","link3":"https://www.aliyun.com/solution/all","link":"https://www.aliyun.com/solution/iot/aostatfirewear","contentLink":"https://www.aliyun.com/solution/iot/aostatfirewear","link1":"https://www.aliyun.com/solution/iot/aostatfirewear","title":"快速接入AT命令WiFi模组解决方案","des":"方案将阿里云IoT连接通道及设备管理能力高度提炼，通过AT指令将鉴权，连接，设备数据收发能力提供给用户侧MCU，使用户最少通过3条指令就可以完成设备连云及数据交互，大大提高设备接入效率。","link2":"https://page.aliyun.com/form/act118567774/index.htm","infoGroup":[{"infoName":"推荐搜索","infoContent":{"firstContentName":" 工业产品可信监造","firstContentLink":"https://www.aliyun.com/solution/iot/securityltl","lastContentName":" 可信一证通","lastContentLink":"https://www.aliyun.com/solution/iot/trustidpass"}}]}]}}