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标题: 为什么我的DAC不能输出电压数据？芯片是stm32f103c8 [打印本页]

作者: showmaker 时间: 2022-1-12 13:37
标题: 为什么我的DAC不能输出电压数据？芯片是stm32f103c8
int main(void)
{
  DAC_InitTypeDef DAC_InitType;
  GPIO_InitTypeDef GPIO_InitStructure;

  delay_init();

RCC_APB2PeriphclockCmd(RCC_APB2Periph_GPIOA, ENABLE );
RCC_APB1PeriphClockCmd(RCC_APB1Periph_DAC, ENABLE );
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4;    // ¶Ë¿úÅäÖÃ
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN ; //Ä￡Äaêäèë  GPIO_Mode_AIN
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_ResetBits(GPIOA,GPIO_Pin_4) ;//PA.4 êä3ö¸ß

DAC_InitType.DAC_trigger=DAC_Trigger_None;
DAC_InitType.DAC_WaveGeneration=DAC_WaveGeneration_None;//
DAC_InitType.DAC_LFSRUnmask_TriangleAmplitude=DAC_LFSRUnmask_Bit0;
DAC_InitType.DAC_OutputBuffer=DAC_OutputBuffer_Disable ;
  DAC_Init(DAC_Channel_1,&DAC_InitType);


DAC_Cmd(DAC_Channel_1, ENABLE);
// DAC_DMACmd(DAC_Channel_1, ENABLE); //
   DAC_SetChannel1Data(DAC_Align_12b_R, 2000);

  while(1)
{
delay_ms(1000);
DAC_SetChannel1Data(DAC_Align_12b_R, 0);
  delay_ms(1000);
DAC_SetChannel1Data(DAC_Align_12b_R, 4096);
}
}

作者: xiananUZI 时间: 2022-1-12 14:04
103C8有DAC吗？

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