stm32的引脚配置

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最新推荐文章于 2025-07-06 16:14:36 发布

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分类专栏：单片机 stm32 文章标签： stm32的引脚配置

本文链接：https://blog.youkuaiyun.com/qq_36958104/article/details/94434572

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最近有新手问我，什么串口2 串口3 都是那个引脚以及PWM配置那个引脚通道选择哪一个、

先简单的描述一下

PWM

//设置该引脚为复用输出功能,输出TIM3 CH2的PWM脉冲波形 GPIOB.5
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5; //TIM_CH2

//设置该引脚为复用输出功能,输出 TIM1 CH1 的 PWM 脉冲

GPIOInitStructure.GPIOPin = GPIOPin8; //TIMC

如果不知道想要使用其他的神费劲只能上网抄别人的程序了

case 0:
                   // 通道0
                   /* ADC1 regular channel0 configuration */
                   ADC_RegularChannelConfig(ADC1, ADC_Channel_0, 1, ADC_SampleTime_13Cycles5);

                   /* Start ADC1 Software Conversion */
                   ADC_SoftwareStartConvCmd(ADC1, ENABLE);

                   while(ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC) == 0);       // 等待转换完成

                   AnalogChannel[0].Buff[AnalogChannel[0].ChCnt++] = ADC1->DR;           // 通道0
                   if(AnalogChannel[0].ChCnt >= SampMax)
                       AnalogChannel[0].ChCnt = 0;
                   ADC_RegularChannelConfig(ADC1, ADC_Channel_15, 1, ADC_SampleTime_13Cycles5);

                   break;

               case 1:
                   // 通道1
                   ADC_RegularChannelConfig(ADC1, ADC_Channel_1, 1, ADC_SampleTime_13Cycles5);

                   /* Start ADC1 Software Conversion */
                   ADC_SoftwareStartConvCmd(ADC1, ENABLE);
                   while(ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC) == 0);       // 等待转换完成
                   AnalogChannel[1].Buff[AnalogChannel[1].ChCnt++] = ADC1->DR;           // 通道0
                   if(AnalogChannel[1].ChCnt >= SampMax)
                       AnalogChannel[1].ChCnt = 0;
                   ADC_RegularChannelConfig(ADC1, ADC_Channel_15, 1, ADC_SampleTime_13Cycles5);
                   break;

               case 2:
                   // 通道4
                   /* ADC1 regular channel0 configuration */
                   ADC_RegularChannelConfig(ADC1, ADC_Channel_4, 1, ADC_SampleTime_13Cycles5);

                   /* Start ADC1 Software Conversion */
                   ADC_SoftwareStartConvCmd(ADC1, ENABLE);
                   while(ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC) == 0);       // 等待转换完成
                   AnalogChannel[2].Buff[AnalogChannel[2].ChCnt++] = ADC1->DR;           // 通道0
                   if(AnalogChannel[2].ChCnt >= SampMax)
                       AnalogChannel[2].ChCnt = 0;
                   ADC_RegularChannelConfig(ADC1, ADC_Channel_15, 1, ADC_SampleTime_13Cycles5);
                   break;
               case 3:
                   // 通道5
                   /* ADC1 regular channel0 configuration */
                   ADC_RegularChannelConfig(ADC1, ADC_Channel_5, 1, ADC_SampleTime_13Cycles5);

                   /* Start ADC1 Software Conversion */
                   ADC_SoftwareStartConvCmd(ADC1, ENABLE);

                   while(ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC) == 0);       // 等待转换完成

                   AnalogChannel[3].Buff[AnalogChannel[3].ChCnt++] = ADC1->DR;           // 通道0
                   if(AnalogChannel[3].ChCnt >= SampMax)
                       AnalogChannel[3].ChCnt = 0;
                   ADC_RegularChannelConfig(ADC1, ADC_Channel_15, 1, ADC_SampleTime_13Cycles5);

                   break;

               case 4:
                   // 通道6
                   ADC_RegularChannelConfig(ADC1, ADC_Channel_6, 1, ADC_SampleTime_13Cycles5);

                   /* Start ADC1 Software Conversion */
                   ADC_SoftwareStartConvCmd(ADC1, ENABLE);
                   while(ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC) == 0);       // 等待转换完成
                   AnalogChannel[4].Buff[AnalogChannel[4].ChCnt++] = ADC1->DR;           // 通道0
                   if(AnalogChannel[4].ChCnt >= SampMax)
                       AnalogChannel[4].ChCnt = 0;
                   ADC_RegularChannelConfig(ADC1, ADC_Channel_15, 1, ADC_SampleTime_13Cycles5);
                   break;

               case 5:
                   // 通道7
                   /* ADC1 regular channel0 configuration */
                   ADC_RegularChannelConfig(ADC1, ADC_Channel_7, 1, ADC_SampleTime_13Cycles5);

                   /* Start ADC1 Software Conversion */
                   ADC_SoftwareStartConvCmd(ADC1, ENABLE);
                   while(ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC) == 0);       // 等待转换完成
                   AnalogChannel[5].Buff[AnalogChannel[5].ChCnt++] = ADC1->DR;           // 通道0
                   if(AnalogChannel[5].ChCnt >= SampMax)
                       AnalogChannel[5].ChCnt = 0;
                   ADC_RegularChannelConfig(ADC1, ADC_Channel_15, 1, ADC_SampleTime_13Cycles5);
                   break;
               case 6:
                   // 通道8
                   /* ADC1 regular channel0 configuration */
                   ADC_RegularChannelConfig(ADC1, ADC_Channel_8, 1, ADC_SampleTime_13Cycles5);

                   /* Start ADC1 Software Conversion */
                   ADC_SoftwareStartConvCmd(ADC1, ENABLE);
                   while(ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC) == 0);       // 等待转换完成
                   AnalogChannel[6].Buff[AnalogChannel[6].ChCnt++] = ADC1->DR;           // 通道0
                   if(AnalogChannel[6].ChCnt >= SampMax)
                       AnalogChannel[6].ChCnt = 0;
                   ADC_RegularChannelConfig(ADC1, ADC_Channel_15, 1, ADC_SampleTime_13Cycles5);
                   break;
               case 7:
                   // 通道9
                   /* ADC1 regular channel0 configuration */
                   ADC_RegularChannelConfig(ADC1, ADC_Channel_9, 1, ADC_SampleTime_13Cycles5);

                   /* Start ADC1 Software Conversion */
                   ADC_SoftwareStartConvCmd(ADC1, ENABLE);
                   while(ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC) == 0);       // 等待转换完成
                   AnalogChannel[7].Buff[AnalogChannel[7].ChCnt++] = ADC1->DR;           // 通道0
                   if(AnalogChannel[7].ChCnt >= SampMax)
                       AnalogChannel[7].ChCnt = 0;
                   ADC_RegularChannelConfig(ADC1, ADC_Channel_15, 1, ADC_SampleTime_13Cycles5);
                   break;
               default:
                   ADC_RegularChannelConfig(ADC1, ADC_Channel_15, 1, ADC_SampleTime_13Cycles5);

                   ADC_SoftwareStartConvCmd(ADC1, ENABLE);
                   while(ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC) == 0);       // 等待转换完成
                   temp = ADC1->DR;           // 通道10
                   temp = temp;