NXP MCXN947测评之 I2C(硬件)2

发布于 2024-04-03 14:10:58 浏览：261 订阅该版

通过env环境配置MCXN947的I2C，使用LM75温度传感器进行测试驱动

测试步骤
1、下载源码 `git clone https://gitee.com/rtthread/rt-thread.git`

![screenshot_图片.png](https://oss-club.rt-thread.org/uploads/20240403/623f5609ab2fa5569b2426379cbdd98d.png)MCXN947
2、安装RT-Thread env工具，由于RT-Thread Studio暂时不支持MCXN947开发板，目前只能用ENV工具进行配置。
3、在rt-thread-master\bsp\nxp\mcx\mcxn\frdm-mcxn947打开env右键单击鼠标，选择“ConEmu Here”。
![screenshot_图片.png](https://oss-club.rt-thread.org/uploads/20240403/06fe22adab5f482c287d1a7b7b854055.png)
4、输入menuconfig”后按回车，弹出当前工程的配置界面
切换到→ Hardware Drivers Config → On-chip Peripheral Drivers页面下，打开i2c

![screenshot_图片.png](https://oss-club.rt-thread.org/uploads/20240403/5b31babed7bc790df8e62a76200a5cae.png)

![screenshot_图片.png](https://oss-club.rt-thread.org/uploads/20240403/68d1849d70e02c3f9d88fbb9478aa0ab.png)
5、 RT-Thread online packages → peripheral libraries and drivers
在此界面下可以选择一个I2C的example
![screenshot_图片.png](https://oss-club.rt-thread.org/uploads/20240403/f8c1f72391530215e6009abad19f2d00.png)
6、保存退出。在线升级示例包执行pkgs --update
7、输入”scons --target=mdk5”生成工程
8、打开KEIL工程修改

![screenshot_图片.png](https://oss-club.rt-thread.org/uploads/20240403/9e386ffb4f8c195da39ac62a311ba41d.png.webp)

![screenshot_图片.png](https://oss-club.rt-thread.org/uploads/20240403/52c6dfe1b0663c4f955d8b279c0df361.png.webp)

![screenshot_图片.png](https://oss-club.rt-thread.org/uploads/20240403/a1a4acc33bce47066c8544de4f0441f8.png)
读取温度

![screenshot_图片.png](https://oss-club.rt-thread.org/uploads/20240403/2112c19db3b440fa5e823de11677a340.png)
用手放上去，温度升高

![screenshot_图片.png](https://oss-club.rt-thread.org/uploads/20240403/98c9bbe6af8b649d165de55b06bb8283.png)