如下是DAC_InitTypeDef结构体成员简述: (a)DAC_Trigger 该成员用于DAC的触发模式配置,由上文DAC通道框图可知,共有三种触发模式,分别是定时器触发(DAC_Trigger_T2/4/5/6/7/8_TRGO)、软件触发(DAC_Trigger_Software)和EXTI_9触发方式(DAC_Trigger_Ext_IT9)。 (b)DAC_WaveGeneration 该成员可配置输出伪噪声和三...
DAC_InitStructure.DAC_Trigger=DAC_Trigger_T2_TRGO;//使用TIM2作为触发源 DAC_InitStructure.DAC_Wave...
❶DAC_Trigger:指定所选DAC的触发源,有9个触发源可以选择: DAC_Trigger_None DAC_Trigger_T6_TRGO DAC_Trigger_T8_TRGO DAC_Trigger_T7_TRGO DAC_Trigger_T5_TRGO DAC_Trigger_T2_TRGO DAC_Trigger_T4_TRGO DAC_Trigger_Ext_IT9 DAC_Trigger_Software ❷DAC_WaveGeneration :指定DAC是否噪声波形,三角波或...
#define DAC_Trigger_T2_TRGO ((uint32_t)0x00000024) /*!< TIM2 TRGO selected as external conversion trigger for DAC channel */ #define DAC_Trigger_T4_TRGO ((uint32_t)0x0000002C) /*!< TIM4 TRGO selected as external conversion trigger for DAC channel */ #define DAC_Trigger_T5_TRGO ((...
// sConfig.DAC_Trigger = DAC_TRIGGER_NONE; //不需要外部触发 sConfig.DAC_Trigger = DAC_TRIGGER_T2_TRGO;//使用TIM2触发DAC输出 sConfig.DAC_Trigger2 = DAC_TRIGGER_NONE; sConfig.DAC_OutputBuffer = DAC_OUTPUTBUFFER_ENABLE; //DAC输出缓冲器打开 ...
DAC_InitStructure.DAC_Trigger = DAC_Trigger_T2_TRGO; //使用TIM2作为触发源 DAC_InitStructure.DAC_WaveGeneration = DAC_WaveGeneration_None; //不使用波形发生器 DAC_InitStructure.DAC_OutputBuffer = DAC_OutputBuffer_Disable; //不使用DAC输出缓冲 ...
DAC_Trigger:触发方式 DAC_WaveGeneration:是否生成波。stm32的DAC可以生成噪声和三角形波两种波 DAC_LFSRUnmask_TriangleAmplitude:生成波的幅值 DAC_OutputBuffer:输出缓冲。手册解释 /*DAC_InitStruct 参数初始化*/ DAC_InitTypeDef DAC_InitStruct; DAC_InitStruct.DAC_Trigger = DAC_Trigger_T2_TRGO; //触发方式...
因此,由于DAC是接受到定时器2(不是上一方案的定时器3,原因之后会讲)的触发输出后才会更新,所以Trigger被设为了T2_TRGO(后面配置定时器的时候也会进行相应的配置),而DMA请求是由DAC产生的,并且此时直接设置DAC寄存器的值并不会改变DAC输出,所以最后用DAC_DMACmd()替换了DAC_SetChannel1Data()。
(GPIOA,&GPIO_InitStructure);// 配置DAC 通道1DAC_InitStructure.DAC_Trigger=DAC_Trigger_T2_TRGO;// 使用TIM2作为触发源DAC_InitStructure.DAC_WaveGeneration=DAC_WaveGeneration_None;// 不使用波形发生器DAC_InitStructure.DAC_OutputBuffer=DAC_OutputBuffer_Disable;// 不使用DAC输出缓冲DAC_Init(DAC_Channel_...
#define DAC_TRIGGER_T1_TRGO ((uint32_t)(DAC_CR_TSEL1_0 | DAC_CR_TEN1)) #define DAC_TRIGGER_T2_TRGO ((uint32_t)(DAC_CR_TSEL1_1 | DAC_CR_TEN1)) #define DAC_TRIGGER_T4_TRGO ((uint32_t)(DAC_CR_TSEL1_1 | DAC_CR_TSEL1_0 | DAC_CR_TEN1) ...