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摘要:随着科技日新月异的发展，各种新式的调频收音机在市场上不断出现，技术也是马不停蹄的迅速提升，收音机被设计得不仅外型精致而且功能强大信号稳定。从原先的分离元件到现在的集成电路，这表明了收音机的内部电路趋近于简单化的趋势。我们可以实现收音机的各种不同的工作仅仅通过一个小小的集成块。先前我们使用的是老式的调幅收音机，而现在我们普遍用上了调频收音机，我们见证着收音机行业巨大的改进以及不断的创新，这些都使得收音机的发展层面越变越大。如今，新的一代的高性能收音机已经问世-FM收音机，这款收音机的功能强悍同时也拥有优异的性能，而且它的外形也相当的精巧实用。FM收音机与之前相比多了很多的优点，比如小巧便捷，收音信号稳定，收频范围广范等。因而现在FM收音机甚至可以嵌入手机等各种便携式娱乐设备的小型电子产品中，给我们的生活制造了相当多的快乐和方便。41176
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毕业论文关键词：FM收音机;STM32;EA5767HN
Design of FM radio system based on STM32
Abstract:With the development of science and technology change with each passing day, new kinds of FM radio in the market appear constantly, technology is also non-stop rapid promotion, radio is designed to be not only exquisite appearance and powerful signal stability. From the original separation of components to the current integrated circuit, which shows that the radio's internal circuits tend to be a simple trend. We can achieve a variety of radio work only through a small integrated block. We used previously is old-fashioned AM radio, and now we are generally used on FM radio. We are witnessing a radio industry huge improvement and constant innovation, which makes the level of the development of the radio to become bigger and bigger. Today, the new generation of high performance radio has come out -FM radio, the radio's powerful and also has excellent performance, and its shape is also very compact and practical. FM radio and prior to many advantages, such as compact and convenient, the radio signal stability, receiving frequency range, etc.. So now FM radio can even be embedded in mobile phones and other portable devices of small electronic products, to our life and make a lot of fun and convenient.
Keywords：FM radio，STM32, TEA5767HN
目录
1 绪论 1
1.1 本课题的意义 1
1.2论文结构框架 1
2 系统描述 2
2.1 系统框架 2
2.2 基于单片机的FM收音机工作原理 2
2.2.1 FM收音机的基本工作原理 2
2.2.2数字调节FM收音机的工作原理 3
2.2.3 用单片机完成数字调节的FM收音机的功能设计 3
3 硬件电路 4
3.1 硬件的组成 4
3.1.1 STM32开发板 5
3.1.2 TEA5767HN芯片 6
3.1.3 电源模块 9
3.1.4 音量模块 9
3.2 FM电路及其设计 9
3.3 TEA5767模块部分原理图 10
3.4 电路装配注意事项 11
4 软件的设计 12
4.1 软件设计思想 12
4.2 主程序设计 12
4.3 收音机控制子程序 12
4.4 数字调节与收音控制程序设计 13
4.4.1 EA5767HN读写寄存器 13
4.4.2 TEA5767HN的数据传输 17
4.4.3 TEA5767HN 的读写流程 17
4.4.4 收音模块的初始化 18
4.5 手动搜台 19
4.6 程序代码设计 19
4.7 I2C总线简介 22