dsPIC33如何使用DMA功能

亲爱的，我试着实现一个简单的程序来学习如何使用DMA功能。我计划把数据发送到DMA，我希望DMA会自动发送数据到SPI缓冲器。首先，我检查了SPI功能。它正按照我的需要将数据发送到传感器。之后，我尝试添加一个DMA功能。不幸的是，我失败了，我没有发送任何数据。我正在使用一个DSPIC33 EP128EP204处理器。配置是用MCC帮助生成的。请找到我的代码（附件中的完整代码）：int main（空隙）{StaseRealAlgLimeIZE（）；//启用全局中断StuttTyGloAlnEnable（）；DMAYPurrulalAddiSrsSSET（0，and；SPI1BUF）；DMAYPurralIrqNoMultBuSET（0，10）；DMAYRealToCurtTeSET（0，1）；DMA-ChhannNel启用（0）；/*DMA0ReqBist.For＝1；QBITS.FULL＝1）；IEC0BITS.SPI1IE＝1；*/DMAIOffice ToRelGelEngult（0）；DMAIL旗舰中断清除（0）；而（1）{//SPI1Exchange 16位（0xAAAA）；/ /添加您的应用程序代码}返回0；}我将非常感谢任何帮助。
C（2.14 KB）-下载42次MCC.C（7.79 KB）-下载43次SPI1.C（7.16 KB）-下载49次Mealth.C（0.62 KB）-下载46次



      以下为原文

    Dear All,

I tried to implement a simple program to learn how to use a DMA feature. I planned to send data to DMA, and I hoped that DMA will automatically send data to the SPI buffer.
Firstly, I have checked an SPI functionality. It was sending data to the sensor as I wanted. After that, I tried to add a DMA functionality. Unfortunately, I failed and I didn't manage to send any data.

I am working a dsPIC33EP128EP204 processor. Configuration was generated with MCC help. Please find my code (full code in attachments) :

int main(void)
{
SYSTEM_Initialize();

// Enable the Global Interrupts
INTERRUPT_GlobalEnable();

DMA_PeripheralAddressSet(0,&SPI1BUF);
DMA_PeripheralIrqNumberSet(0,10);
DMA_TransferCountSet(0,1);
DMA_ChannelEnable(0);

/*
DMA0REQbits.FORCE=1;
while (DMA0REQbits.FORCE == 1);
IEC0bits.SPI1IE = 1;
*/

DMA_SoftwareTriggerEnable(0);
DMA_FlagInterruptClear(0);

while (1)
{
//SPI1_Exchange16bit(0xAAaa);
// Add your application code
}

return 0;
}

I will be grateful for any help.
Sincerely xyz
   Attachment(s)

dma.c (4.56 KB) - downloaded 42 times
interrupt_manager.c (2.14 KB) - downloaded 42 times
mcc.c (7.79 KB) - downloaded 43 times
spi1.c (7.16 KB) - downloaded 49 times
main.c (0.62 KB) - downloaded 46 times