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标题: 使用STM32F100C8T6B DAC 无输出， [打印本页]

作者: 张衍波 时间: 2015-9-18 10:56
标题: 使用STM32F100C8T6B DAC 无输出，
使用STM32F100C8T6B  ,PA4  DAC没有输出，哪位测试成功的，说说看呢声明下，程序没改动，下到STM32F103VCT6上就有DAC输出官网下的STM32F100C8T6B手册，写着有DAC功能，汗啊

void DAC1_Init(void)
{

      GPIO_InitTypeDef  GPIO_InitStructure;

      DAC_InitTypeDef DAC_InitStructure;

RCC_APB1PeriphClockCmd( RCC_APB1Periph_DAC, ENABLE );

      RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);       //使能PA端口时钟

      GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4;                               //DAC1 在 PA4
      GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;                //
//       GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
      GPIO_Init(GPIOA, &GPIO_InitStructure);

      DAC_DeInit();

      DAC_InitStructure.DAC_Trigger = DAC_Trigger_None;
      DAC_InitStructure.DAC_WaveGeneration = DAC_WaveGeneration_None;
//       DAC_InitStructure.DAC_OutputBuffer = DAC_OutputBuffer_Disable;
  DAC_InitStructure.DAC_OutputBuffer = DAC_OutputBuffer_Enable;
      DAC_Init(DAC_Channel_1, &DAC_InitStructure);

      DAC_Cmd(DAC_Channel_1, ENABLE);

            DAC_SetChannel1Data(DAC_Align_12b_R,2048);       //12位 4096=3.3V 2048输出3.3/2=1.65V
            DAC_SoftwareTriggerCmd(DAC_Channel_1,ENABLE);
}转载

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