请教：PWM配置方面的问题

发布于 2023-09-30 23:12:49 浏览：751 订阅该版

我想学习一下 PWM方面的应用 
用的芯片是STM32F103CB
用CubeMX 和RT_Settings 这两个工具 配置 选择了外部时钟 开启了定时器1的3号通道 开启了PWM功能，为什么编译时出现 错误 好像是说 空枚举无效 的意思

编译出错的提示在下面
编译提示的内容如下

```
arm-none-eabi-gcc "../drivers/drv_qspi.c"
../drivers/drv_pwm.c:81:1: error: empty enum is invalid
   81 | };
      | ^
make: *** [drivers/subdir.mk:69: drivers/drv_pwm.o] Error 1
make: *** Waiting for unfinished jobs....
"make -j2 all" terminated with exit code 2. Build might be incomplete.

22:58:06 Build Failed. 3 errors, 1 warnings. (took 1m:17s.604ms)
```

出错程序光标指示到下面这段程序末尾的花括号后面
```c
enum
{
#ifdef BSP_USING_PWM1
    PWM1_INDEX,
#endif
#ifdef BSP_USING_PWM2
    PWM2_INDEX,
#endif
#ifdef BSP_USING_PWM3
    PWM3_INDEX,
#endif
#ifdef BSP_USING_PWM4
    PWM4_INDEX,
#endif
#ifdef BSP_USING_PWM5
    PWM5_INDEX,
#endif
#ifdef BSP_USING_PWM6
    PWM6_INDEX,
#endif
#ifdef BSP_USING_PWM7
    PWM7_INDEX,
#endif
#ifdef BSP_USING_PWM8
    PWM8_INDEX,
#endif
#ifdef BSP_USING_PWM9
    PWM9_INDEX,
#endif
#ifdef BSP_USING_PWM10
    PWM10_INDEX,
#endif
#ifdef BSP_USING_PWM11
    PWM11_INDEX,
#endif
#ifdef BSP_USING_PWM12
    PWM12_INDEX,
#endif
#ifdef BSP_USING_PWM13
    PWM13_INDEX,
#endif
#ifdef BSP_USING_PWM14
    PWM14_INDEX,
#endif
#ifdef BSP_USING_PWM15
    PWM15_INDEX,
#endif
#ifdef BSP_USING_PWM16
    PWM16_INDEX,
#endif
#ifdef BSP_USING_PWM17
    PWM17_INDEX,
#endif
};
```