RT-Thread-获取 FRDM-MCX947 开发板 NXP官方SDK USB示例工程（注意多图）RT-Thread问答社区

获取 FRDM-MCX947 开发板 NXP官方SDK USB示例工程（注意多图）

发布于 2024-03-23 04:43:59 浏览：226 订阅该版

[tocm]

感谢rt-thread 提供的FRDM-MCXN94 开发板，领取了 “恩智浦FRDM-MCX947上的USB-D实践” 任务；首先把USB外设驱动起来，下载NXP官方的SDK方法记录如下：
# 一、获取NXP官方SDK
1. 搜索 “NXP SDK 下载”
![搜索](https://oss-club.rt-thread.org/uploads/20240323/197d7321b2727a257ac0d8e5c0da875b.png)

2. 选择官网
![选择官网.png](https://oss-club.rt-thread.org/uploads/20240323/35d73e60d7d76c0c5868e2008adad29e.png)

3. 选择开发板
![官网.png](https://oss-club.rt-thread.org/uploads/20240323/965eb3c61081180c28452bbc5174e5d5.png.webp)

4. 登录账号
![登录.png](https://oss-club.rt-thread.org/uploads/20240323/111706d34464489f64e1ab08b58329ec.png)

5. 选择开发板，构建MCUXpresso SDK
![选择开发板.png](https://oss-club.rt-thread.org/uploads/20240323/bbeade90f15f9faf211fa13f2aa5ac5e.png.webp)

6. 配置SDK，操作系统，IDE，外设驱动
![配置SDK.png](https://oss-club.rt-thread.org/uploads/20240323/026ab044eca74d14a9a65d9065be5e83.png.webp)

7. 下载SDK，接受协议
![下载SDK.png](https://oss-club.rt-thread.org/uploads/20240323/cd25c80a8ae2ae021a446608d0cad522.png.webp)

# 二、编译测试SDK
1. 打开工程
![打开工程.png](https://oss-club.rt-thread.org/uploads/20240323/7e22e739b9e26c181b21bd3e7eb69de0.png)

2. 编译
![设备ID.png](https://oss-club.rt-thread.org/uploads/20240323/8108f0961213e8df1b1aad772e56a341.png.webp)

3. 查看设备ID，程序功能，收啥回啥
```c
#define USB_DEVICE_VID (0x1FC9U)
#define USB_DEVICE_PID (0x0094U)
```
```c
static void APPTask(void)
{
    usb_status_t error = kStatus_USB_Error;
    uint32_t usbOsaCurrentSr;

if ((1U == s_cdcVcom.attach) && (1U == s_cdcVcom.startTransactions))
    {
        /* Enter critical can not be added here because of the loop */
        /* endpoint callback length is USB_CANCELLED_TRANSFER_LENGTH (0xFFFFFFFFU) when transfer is canceled */
        if ((0 != s_recvSize) && (USB_CANCELLED_TRANSFER_LENGTH != s_recvSize))
        {
            /* The operating timing sequence has guaranteed there is no conflict to access the s_recvSize between USB
               ISR and this task. Therefore, the following code of Enter/Exit ctitical mode is useless,
               only to mention users the exclusive access of s_recvSize if users implement their own
               application referred to this SDK demo */
            CDC_VCOM_BMEnterCritical(&usbOsaCurrentSr);
            if ((0U != s_recvSize) && (USB_CANCELLED_TRANSFER_LENGTH != s_recvSize))
            {
                /* Copy Buffer to Send Buff */
                memcpy(s_currSendBuf, s_currRecvBuf, s_recvSize);
                s_sendSize = s_recvSize;
                s_recvSize = 0;
            }
            CDC_VCOM_BMExitCritical(usbOsaCurrentSr);
        }

if (0U != s_sendSize)
        {
            uint32_t size = s_sendSize;
            s_sendSize    = 0;

error = USB_DeviceCdcAcmSend(s_cdcVcom.cdcAcmHandle, USB_CDC_VCOM_BULK_IN_ENDPOINT, s_currSendBuf, size);

if (error != kStatus_USB_Success)
            {
                /* Failure to send Data Handling code here */
            }
        }
}
```

4. 链接设备下载USB端口，下载程序
![动画.gif](https://oss-club.rt-thread.org/uploads/20240323/348f3ed0677ce6d2000d038ec9c4d7db.gif)

5. 连接设备 CPU USB端口
![查看设备.png](https://oss-club.rt-thread.org/uploads/20240323/8883b710dba4c15c377919f351ce8841.png)

6. 测试设备
![动画1.gif](https://oss-club.rt-thread.org/uploads/20240323/2864e7935b19b8b542ef1f7fac21bbdb.gif)

# 三、总结
1. NXP官方SDK构建工具很方便可以生成多种IDE工程，并且无需修改直接使用；
2. 下一步熟悉代码，移植至RT-Thread；

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获取 FRDM-MCX947 开发板 NXP官方SDK USB示例工程（注意多图）

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