DMA_InitTypeDef DMA_InitStructure; if((u32)DMA_Streamx>(u32)DMA2)//得到当前stream是属于DMA2还是DMA1 RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA2,ENABLE);//DMA2时钟使能 else RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA1,ENABLE);//DMA1时钟使能 DMA_DeInit(DMA_Streamx); while (DMA_GetCmdSta...
if ((u32)DMA_Streamx > (u32)DMA2) { RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA2, ENABLE); } else { RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA1, ENABLE); } //反初始化 DMA_DeInit(DMA_Streamx); //等待DMA可以配置 while(DMA_GetCmdStatus(DMA_Streamx) != DISABLE) { } //配置DMA ...
DMA_DeInit(DMA1_Stream6);while (DMA_GetCmdStatus(DMA1_Stream6) != DISABLE){} //µÈ´...
be bypassed.*/while(DMA_GetCmdStatus(DMA2_Stream2) !=DISABLE) { }/*Configure DMA Stream*/DMA_InitStructure.DMA_Channel= DMA_Channel_4;//DMA请求发出通道DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)&USART1->DR;//配置外设地址DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)UART_B...
基于STM32（串口+DMA+空闲中断+环形缓冲区）实现 YMODEM协议IAP在线烧写程序 BootLoader 扇区: 0x08000000...
be bypassed.*/while(DMA_GetCmdStatus(DMA2_Stream7) !=DISABLE) { }/*Configure DMA Stream*/DMA_InitStructure.DMA_Channel= DMA_Channel_4;//DMA请求发出通道DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)&USART1->DR;//配置外设地址DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)UART_...
be bypassed. */while(DMA_GetCmdStatus(DMA2_Stream2) != DISABLE) { }/* Configure DMA Stream */DMA_InitStructure.DMA_Channel = DMA_Channel_4;//DMA请求发出通道DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)&USART1->DR;//配置外设地址DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t...
;while(DMA_GetCmdStatus(DMA2_Stream7)!=ENABLE);} 可以正常发送,但是有问题,发送50个字符,每次复位重新发送时,第一个字符为/0,循环发送的时候,也是第一次发送的第一个字符为/0,如图 查看参考手册,发现 DMA配置完成后,会把第一个数据放到FIFO中,而我最开始的代码,把数组填充放到DMA配置的后面,所以放入FIFO...
while(DMA_GetCmdStatus(DMA2_Stream2) != DISABLE) { } /* Configure DMA Stream */ DMA_InitStructure.DMA_Channel = DMA_Channel_4;//DMA请求发出通道 DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)&USART1->DR;//配置外设地址 DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)UART_Buffe...
void DMA1_Stream5_IRQHandler(void) { if(DMA_GetITStatus(DMA1_Stream5, DMA_IT_TCIF5)) { // 数据传输完成中断 // 在这里处理传输完成后的操作 DMA_ClearITPendingBit(DMA1_Stream5, DMA_IT_TCIF5); } } int main(void) { // 初始化USART1和DMA ...