[讨论]

DAC无电压输出，求解！！！

2014-3-7 20:38:17 4509

0 DAC配置如下： void Dac1_Init(void) { DAC_InitTypeDef DAC_InitStruct; GPIO_InitTypeDef GPIO_InitStructure; RCC_APB1PeriphClockCmd(RCC_APB1Periph_DAC, ENABLE); RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE); /* Configure DAC channe1 outputs pins / GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN; GPIO_Init(GPIOA, &GPIO_InitStructure); DAC_DeInit(); //DAC_Cmd(DAC_Channel_1,ENABLE); // //DAC_Cmd(DAC_Channel_2, ENABLE); DAC_Structinit(&DAC_InitStruct);//将DAC_Struct的值设为默认 DAC_InitStruct.DAC_Trigger=DAC_Trigger_Software;//由软件触发 DAC_InitStruct.DAC_WaveGeneration=DAC_WaveGeneration_None;//关闭波形生成 DAC_InitStruct.DAC_LFSRUnmask_TriangleAmplitude=DAC_TriangleAmplitude_4095; DAC_InitStruct.DAC_OutputBuffer=DAC_OutputBuffer_Disable;//使能DAC通道缓存 DAC_Init(DAC_Channel_1,&DAC_InitStruct); / Enable DAC Channel1 */ DAC_DualSoftwareTriggerCmd(ENABLE);//使能软件触发,更新DAC的值 DAC_SetChannel1Data(DAC_Align_12b_R,4000);//12位右对齐, DAC_SoftwareTriggerCmd(DAC_Channel_1, ENABLE); DAC_Cmd(DAC_Channel_1, ENABLE); } 主函数中： Dac1_Init(); DAC_SetChannel1Data(DAC_Align_12b_R, 4000); DAC_SoftwareTriggerCmd(DAC_Channel_1, ENABLE); 测PA4无电压输出啊！求解！！！ 0
2014-3-7 20:38:17　　评论淘帖0 举报相关推荐 • DAC PA4无电压输出啊！求解！！！ 2841 • 电压输出DAC 9 • 电流输出DAC的无源端接 0 • DAC输出可调电压 4326 • STM32_ DAC输出电压 10403 • 求助，关于DAC的输出放大电路问题求解 119 • 如何快速调整DAC输出电压范围 828 • 调节DAC输出电压范围的几种方式 4058 • 双通道、电压输出DAC功耗极低 1556 • DAC无法输出满量程电压的分析解决 13 1 个讨论