DMA2_Stream0_IRQn " bsp_drver_sd.c " 0xf 非常感谢,按照你的配置方式,SDMMC的DMA方式调通了,但是发现,使用DMA和不使用DMA读写速度没多少变化,我是直接块读写操作,每次多块写入16K字节(512*n),速度也就2.7m/s 你有测试过么 举报 李艳玮 2019-3-18 08:50:49 引用: 60user91 发表于 2019-3-...
NVIC_InitStructure.NVIC_IRQChannel = DMA2_Stream0_IRQn;NVIC_InitStructure.NVIC_IRQChannelPreemption...
图中，我们标记了6处位置，起作用分别是：①，DMA控制器的从机编程接口，通过该接口可以对DMA的相关...
71 DMA_Init(DMA2_Stream7, &DMA_InitStructure); //初始化DMA Stream7 72 DMA_ITConfig(DMA2_Stream7, DMA_IT_TC, ENABLE); //DMA2传输完成中断 73 USART_DMACmd(USART1,USART_DMAReq_Tx,ENABLE); //使能USART1DMA发送 74 75 NVIC_InitStructure.NVIC_IRQChannel = DMA2_Stream7_IRQn ;//串口1发送...
//ÉèÖÃTIM2Êä³ö´¥·¢Îª¸üÐÂģʽ51TIM2->CR2 |=0x0020;//触发更新模式52//TIM_SelectOutputTrigger(TIM2,TIM_TRGOSource_Update);5354TIM_Cmd(TIM2,ENABLE);//ʹÄܶ¨Ê±Æ÷255//56//NVIC_InitStructure.NVIC_IRQChannel=TIM3_IRQn;/...
//ÉèÖÃTIM2Êä³ö´¥·¢Îª¸üÐÂģʽ51TIM2->CR2 |=0x0020;//触发更新模式52//TIM_SelectOutputTrigger(TIM2,TIM_TRGOSource_Update);5354TIM_Cmd(TIM2,ENABLE);//ʹÄܶ¨Ê±Æ÷255//56//NVIC_InitStructure.NVIC_IRQChannel=TIM3_IRQn;/...
SD_Handle.hdmarx->Instance = DMA2_Stream3;SD_Handle.hdmarx->Init.Channel = DMA_CHANNEL...
= HAL_OK)/* DMA初始化 */ 44 { 45 Error_Handler(); 46 } 47 /* DMA2_Stream0_IRQn中断配置 */ 48 HAL_NVIC_SetPriority(DMA2_Stream0_IRQn, 2, 0); 49 HAL_NVIC_EnableIRQ(DMA2_Stream0_IRQn); 50 /* DMA2_Stream1_IRQn中断配置 */ 51 HAL_NVIC_SetPriority(DMA2_Stream1_IRQn, 2, ...
71 DMA_Init(DMA2_Stream7, &DMA_InitStructure); //初始化DMA Stream7 72 DMA_ITConfig(DMA2_Stream7, DMA_IT_TC, ENABLE); //DMA2传输完成中断 73 USART_DMACmd(USART1,USART_DMAReq_Tx,ENABLE); //使能USART1DMA发送 74 75 NVIC_InitStructure.NVIC_IRQChannel = DMA2_Stream7_IRQn ;//串口1发送...
(USART1,&USART_InitStruct);//初始化串口2930NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;//IRQ通道31NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority =1;//主优先级32NVIC_InitStructure.NVIC_IRQChannelSubPriority =0;//从优先级33NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;//使能通道34NVIC_...