haas-python-tea5767 0.0.7
This is tea5767 driver for HaaS Python. HaaS Python is forked from micropython.
License: Apache License, Version 2.0


## HaaS Python介绍
HaaS Python是阿里云IoT团队最新研发的一套低代码编程框架，兼容MicroPython编程规范，依托HaaS平台软硬件积木提供AI、支付、蓝牙配网、云连接、UI等物联网场景常用的能力，从而解决了物联网应用开发难的问题。有了Python轻应用框架，物联网编程不再局限于专业软件开发人员，一般的技术员也可以快速实现复杂的物联网需求。
更多HaaS Python介绍和开发资料见[HaaS Python官网](https://haas.iot.aliyun.com/haasapi/index.html?spm=a2cpu.b16145223.0.0.595660b1dZDX71#/?from=corp),[创意案例](https://haas.iot.aliyun.com/solution?from=crop), [硬件积木](https://haas.iot.aliyun.com/solution/hardware?from=corp)

HaaS Python is a set of low-code programming frameworks newly developed by Alibaba Cloud IoT team. It is compatible with MicroPython programming specifications. It relies on the hardware and software building blocks of the HaaS platform to provide capabilities commonly used in IoT scenarios such as AI, payment, Bluetooth network configuration, cloud connection, and UI. Solve the difficult problem of IoT application development. With the Python light application framework, IoT programming is no longer limited to professional software developers, and general technicians can quickly implement complex IoT requirements.
For more HaaS Python introduction and development materials, see [HaaS Python official website](https://haas.iot.aliyun.com/haasapi/index.html?spm=a2cpu.b16145223.0.0.595660b1dZDX71#/?from=corp), [Creative Case](https://haas.iot.aliyun.com/solution?from=crop), [Hardware Building Blocks](https://haas.iot.aliyun.com/solution/hardware?from=corp)

## 安装方法
* 在[HaaS Python官网](https://haas.iot.aliyun.com/haasapi/index.html?spm=a2cpu.b50127119.0.0.4e1260b1ebMIf1#/)下载开发板对应的固件，并完成固件烧录

Download the firmware corresponding to the development board at [HaaS Python website](https://haas.iot.aliyun.com/haasapi/index.html?spm=a2cpu.b50127119.0.0.4e1260b1ebMIf1#/) and complete the firmware burning

* 在开发板上运行以下命令完成安装和使用,如果您在使用过程中遇到问题，欢迎在[github上向我们提交issue](https://github.com/alibaba/AliOS-Things/issues)，我们的工程师会及时解答

Run the following commands on the development board to complete the installation and use. If you encounter problems during use, please submit an issue to us on [github](https://github.com/alibaba/AliOS-Things/issues), Our engineers will answer in time
```
import upip
upip.install("haas-python-tea5767")
import haas-python-tea5767
```
# FM收音机模块 - TEA5767

## 一、产品简介
TEA5767 FM收音机模块是工作频率在76MHz～108MHz的自动数字调谐收音机。其特点高灵敏度、高稳定、低噪声，内部集成了中频选频和解调网络。

<div align="center">
<img src=./../../docs/images/tea5767-front.png  width=30%/>
</div>

引脚定义
* GND：接地<br>
* SCL：I2C时钟<br>
* SDA：I2C数字<br>
* VCC：5V<br>

## 二、技术参数
* 供电电压：5V DC<br>
* 接口：I2C接口<br>
* 频率：76MHz-108MHz<br>
* 电路：AGC（高放自动增益控制）<br>
* 特性：支持SNC（立体声消噪）、锁相环调谐系统 <br>
* 模块尺寸：30mm * 30mm<br>

## 三、软件接口

TEA5767 FM收音机模块HaaS Python驱动：[下载地址](https://github.com/alibaba/AliOS-Things/tree/master/haas_lib_bundles/python/libraries/tea5767)。

### TEA5767(i2cObj) - 创建TEA5767驱动对象
* 函数原型：
> tea5767Obj = TEA5767(i2cObj)

* 参数说明：
<br>
|参数|类型|必选参数？|说明|
|-----|----|:---:|----|
|i2cObj|I2C|是|调用此函数前需确保i2cObj对象已经处于open状态|

* 返回值：
<br>
TEA5767对象创建成功，返回TEA5767对象；TEA5767对象创建失败，抛出Exception

* 示例代码：

```python
from driver import I2C
import tea5767

i2cObj = I2C()
i2cObj.open("tea5767")
robot=tea5767.TEA5767(i2cObj)
print('tea5767 inited')
```

* 输出：
```log
tea5767 inited!
```

### setFrequency(freq) - 设置FM工作频率

* 函数功能：
<br>
设置FM收音机工作频率

* 函数原型：
> TEA5767.setFrequency(freq)

* 参数说明：

|返回值|类型|说明|
|-----|----|----|
|freq|float|76.0~108.0，单位（MHz）|

* 返回值：
无

* 示例：

```python
from driver import I2C
import tea5767

i2cObj = I2C()
i2cObj.open("tea5767")
robot=tea5767.TEA5767(i2cObj)
print('tea5767 inited')
robot.setFrequency(91.8)
print('set freq = 91.8Mhz')
```

* 输出：
```log
tea5767 inited
set freq = 91.8Mhz
```

## 四、接口案例
<br>
此使用实例在board.json中定义了名为tea5767的I2C类型的对象。在Python脚本中设置FM频率为91.8Mhz的频道并打印在日志中。

* 代码：
board.json配置
```json
{
    "name": "board-name",
    "version": "1.0.0",
    "io": {
      "tea5767": {
        "type": "I2C",
        "port": 0,
        "addrWidth": 7,
        "freq": 400000,
        "mode": "master",
        "devAddr": 96
      }
    },
    "debugLevel": "ERROR",
    "repl": "disable"
}
```

* 示例：
```python
from driver import I2C
import tea5767

i2cObj = I2C()
i2cObj.open("tea5767")
robot=tea5767.TEA5767(i2cObj)
print('tea5767 inited')
robot.setFrequency(91.8)
print('set freq = 91.8Mhz')
```

* 输出：
```log
tea5767 inited
set freq = 91.8Mhz
```

<br>

 ## 参考文献及购买链接
[1] [TEA5767收音机模块介绍说明](https://www.mwrf.net/tech/communications/2013/12576.html)<br>
[2] [TEA5767收音机模块购买](https://item.taobao.com/item.htm?spm=a230r.1.14.16.6eda2f4bsR3IjR&id=542111885602&ns=1&abbucket=8#detail)