主题中讨论的其他器件:HALCOGEN
工具/软件:Code Composer Studio
您好!
提示、在哪里可以找到在 compatabiliti 模式下使用 SPI 与 DMA 的示例?
This thread has been locked.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
我编写了这个代码。 出什么问题了?
uint8_t s[10];
uint8_t d[10];
dmaEnable();
/*----------------- *
dmaSetPriority (DMA_CH0、高优先级);
dmaCTRL.Sadd =&(spiREG1->BUF);
dmaCTRL.DADD = d;
dmaCTRL.FRCNT = 1;
dmaCTRL.ELCNT = 10;
dmaCTRL.ELSOFFSET = 0;
dmaCTRL.FRSOFFSET = 0;
dmaCTRL.ELDOFFSET = 0;
dmaCTRL.FRDOFFSET = 0;
dmaCTRL.PORTASGN = 4;
dmaCTRL.RDSIZE = ACCESS_8_BIT;
dmaCTRL.WRSIZE = ACCESS_8_BIT;
dmaCTRL.tType = frame_transfer;
dmaCTRL.ADDMODERD = ADDR_FIXED;
dmaCTRL.ADDMODEWR = ADDR_INC1;
dmaCTRL.AUTOINIT = AUTOINIT_OFF;
dmaCTRL.COMBO = 0;//????;
dmaCTRL.CHCTRL = 0;//????;
dmaSetCtrlPacket (DMA_CH0、dmaCTRL);
dmaReqAssign (DMA_CH0、0);
/*----------------- *
dmaSetPriority (DMA_CH1、高优先级);
dmaCTRL.Sadd = s;
dmaCTRL.DADD =&(spiREG1->DAT0);
dmaCTRL.FRCNT = 1;
dmaCTRL.ELCNT = 10;
dmaCTRL.ELSOFFSET = 0;
dmaCTRL.FRSOFFSET = 0;
dmaCTRL.ELDOFFSET = 0;
dmaCTRL.FRDOFFSET = 0;
dmaCTRL.PORTASGN = 4;
dmaCTRL.RDSIZE = ACCESS_8_BIT;
dmaCTRL.WRSIZE = ACCESS_8_BIT;
dmaCTRL.tType = frame_transfer;
dmaCTRL.ADDMODERD = ADDR_INC1;
dmaCTRL.ADDMODEWR = ADDR_FIXED;
dmaCTRL.AUTOINIT = AUTOINIT_OFF;
dmaCTRL.COMBO = 0;//????;
dmaCTRL.CHCTRL = 0;//????;
dmaSetCtrlPacket (DMA_CH1、dmaCTRL);
dmaReqAssign (DMA_CH1、1);
/*----------------- *
dmaSetChEnable (DMA_CH0、DMA_HW);
dmaSetChEnable (DMA_CH1、DMA_HW);
//OneShot RXDMALINE TXDMALINE RXENA TXENA
*(volatile uint32_t *)(0xFFF7F400U+0x0d8U)=(1<<31)|(0U<20U)|(1U<16U)|(1U<15U)|(1U<14U);//DMA0CTRL
spiREG1->INT0 |= 0x10000U;//打开 DMA Rq
spiREG1->DAT0=0;//<--- 开始
xTaskDelay (2);
spiREG1->INT0 &=~(0x10000U);//关闭 DMA Rq