每个DAC通道有一个独立的DMA请求，DMA传输方向是从存储器到外设。单个DAC通道受外部触发工作时，可以使用...
DAC2_CH1.DAC_DMADoubleDataMode = DISABLE; //双重数据模式（高带宽模式）关闭 DAC2_CH1.DAC_...
sConfig.DAC_DMADoubleDataMode = DISABLE;sConfig.DAC_SignedFormat = DISABLE;sConfig.DAC_SampleAnd...
DAC_HandleTypeDef hdac1;voidDAC1_OUT1_Set_Vol(float vol)//设置PA4的输出电压{uint16_t temp;temp=(4096*vol/3.3f);HAL_DAC_SetValue(&hdac1,DAC_CHANNEL_1,DAC_ALIGN_12B_R,temp);}voidDAC1_OUT2_Set_Vol(float vol)//设置PA5的输出电压{uint16_t temp;temp=(4096*vol/3.3f);HAL_DAC_SetVal...
双通道同步输出的关键在于正确配置CubeMX和HAL库函数，避免使用DMA Double Data Mode与Dual-channel Mode冲突。正确设置双通道后，通过中断回调函数更新DMA内存，实现稳定相位的数字频率合成输出。测试显示，相位关系稳定，最高扫频可达近400kHz。外部运算放大器和电源偏置测试验证了差分输出效果。感谢T-1010在...
(&hdac1);sConfig.DAC_HighFrequency=DAC_HIGH_FREQUENCY_INTERFACE_MODE_AUTOMATIC;sConfig.DAC_DMADoubleDataMode=DISABLE;sConfig.DAC_SignedFormat=DISABLE;sConfig.DAC_SampleAndHold=DAC_SAMPLEANDHOLD_DISABLE;sConfig.DAC_Trigger=DAC_TRIGGER_NONE;sConfig.DAC_Trigger2=DAC_TRIGGER_NONE;sConfig.DAC_Output...
sConfig.DAC_DMADoubleDataMode = DISABLE; sConfig.DAC_SignedFormat = DISABLE; sConfig.DAC_SampleAndHold = DAC_SAMPLEANDHOLD_DISABLE; sConfig.DAC_Trigger = DAC_TRIGGER_T2_TRGO; sConfig.DAC_OutputBuffer = DAC_OUTPUTBUFFER_ENABLE; sConfig.DAC_ConnectOnChipPeripheral = DAC_CHIPCONN...
The minimum transfer clock cycle by DMA to the DAC is not the same for all STM32 microcontrollers, because of the different bus configuration. DMA double data mode Some DACs on STM32 MCUs support DMA double data mode. When the DMA controller is used in Normal mode, only ...
DAC)是12位数字输入，电压输出的数字/模拟转换器。 DAC可以配置为8位或12位模式，也可以与DMA控制器...
stm32是32位处理器,所以一个word就对应32位,一个half word就对应16位。根据需要传输数据的大小选择对应Data Width即可。 例如笔者使用ADC进行数据采集,ADC的精度是12位的,所以Data Width选择half word就够用了。 Mode选择Normal,所以每次传输完数据得自己手动再次开启DMA传输。