新建RT-Thread项目后，调用cubemax生成的函数时，提示找不到定义

发布于 2023-09-28 15:54:19 浏览：524 订阅该版

![问题.png](https://oss-club.rt-thread.org/uploads/20230928/5f20d62d83406bead689e0d2d6e0d1af.png.webp)
以下是main.c的所有代码

```c
/*
 * Copyright (c) 2006-2023, RT-Thread Development Team
 *
 * SPDX-License-Identifier: Apache-2.0
 *
 * Change Logs:
 * Date           Author       Notes
 * 2023-09-28     RT-Thread    first version
 */

#include <rtthread.h>

#define DBG_TAG "main"
#define DBG_LVL DBG_LOG
#include <rtdbg.h>
#include "main.h"
#include "usart.h"
#include "gpio.h"
#include <string.h>

int main(void)
{
    int count = 1;
    MX_GPIO_Init();
    MX_USART1_UART_Init();
    while (count++)
    {
        LOG_D("Hello RT-Thread!");
        HAL_UART_Transmit(&huart1,(uint8_t *)"Hello RT-Thread!",strlen("Hello RT-Thread!"),100);
        rt_thread_mdelay(1000);
    }

return RT_EOK;
}
```

以下是报错信息：
```
15:43:05 **** Incremental Build of configuration Debug for project RT-Thread_test ****
make -j8 all 
arm-none-eabi-gcc "../applications/main.c"
linking...
./applications/main.o: In function `main':
D:\RT-ThreadStudio\workspace\RT-Thread_test\Debug/../applications/main.c:24: undefined reference to `MX_GPIO_Init'
D:\RT-ThreadStudio\workspace\RT-Thread_test\Debug/../applications/main.c:25: undefined reference to `MX_USART1_UART_Init'
D:\RT-ThreadStudio\workspace\RT-Thread_test\Debug/../applications/main.c:34: undefined reference to `huart1'
collect2.exe: error: ld returned 1 exit status
make: *** [makefile:58: rtthread.elf] Error 1
"make -j8 all" terminated with exit code 2. Build might be incomplete.

15:43:07 Build Failed. 4 errors, 0 warnings. (took 1s.641ms)
```