资 源 简 介
有关于stm32F105的串口三测试程序，通过dma的方式进行数据传输
void USART3_DMA_Send(u8 DA2_len,u8 u2_buffer[])
{
u8 i = 1;
if(DA2_len > USART3_SendBuff_SIZE)
DA2_len = USART3_SendBuff_SIZE;
if(USART3_TX_Finish ==0)
{
TX_Delayms(10);
}
USART3_TX_Finish = 0;
DMA_Cmd(DMA1_Channel2, DISABLE);
for(i=0;iCNDTR=DA2_len;
DMA_Cmd(DMA1_Channel2, ENABLE);
}
