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器件型号：TMS570LC4357 大家好、
TMS570LC4357上的 SPI 双机器通信测试。 SPI3是主器件、SPI1是从器件。 从器件通过 DMA 接收和发送数据。
在测试过程中、示波器显示主器件通常可以生成 CS、SCK 和 MOSI 信号。 MISO 读数为0。 硬件连接被确认为正确、但是从器件 SPI1无法接收或发送数据(发送的数据为默认值0x00)。 以下是 DMA 配置：
uint16 SPI1_TX_Data[D_SIZE];
uint16 SPI1_RX_Data[D_SIZE];
g_dmaCTRL g_dmaCTRLPKT1;
g_dmaCTRL g_dmaCTRLPKT2;
void DMA_Config(void)
{
dmaEnable();
//DMA transmit channel 0
g_dmaCTRLPKT1.SADD = (uint32)&SPI1_TX_Data[0]; // source address
g_dmaCTRLPKT1.DADD = (uint32)(&(spiREG1->DAT1)); // destination address
g_dmaCTRLPKT1.CHCTRL = 0; // channel control
g_dmaCTRLPKT1.FRCNT = 1; // frame count
g_dmaCTRLPKT1.ELCNT = D_SIZE; // element count
g_dmaCTRLPKT1.ELDOFFSET = 0; // element destination offset
g_dmaCTRLPKT1.ELSOFFSET = 0; // element source offset
g_dmaCTRLPKT1.FRDOFFSET = 0; // frame destination offset
g_dmaCTRLPKT1.FRSOFFSET = 0; // frame source offset
g_dmaCTRLPKT1.PORTASGN = PORTA_READ_PORTB_WRITE;
g_dmaCTRLPKT1.RDSIZE = ACCESS_16_BIT; // read size
g_dmaCTRLPKT1.WRSIZE = ACCESS_16_BIT; // write size
g_dmaCTRLPKT1.TTYPE = FRAME_TRANSFER; // transfer type
g_dmaCTRLPKT1.ADDMODERD = ADDR_INC1; // address mode read
g_dmaCTRLPKT1.ADDMODEWR = ADDR_FIXED; // address mode write
g_dmaCTRLPKT1.AUTOINIT = AUTOINIT_ON; // autoinit
//DMA receive channel 1
g_dmaCTRLPKT2.SADD = (uint32)(&(spiREG1->BUF)); // source address
g_dmaCTRLPKT2.DADD = (uint32)&SPI1_RX_Data[0]; // destination address
g_dmaCTRLPKT2.CHCTRL = 0; // channel control
g_dmaCTRLPKT2.FRCNT = 1; // frame count
g_dmaCTRLPKT2.ELCNT = D_SIZE; // element count
g_dmaCTRLPKT2.ELDOFFSET = 0; // element destination offset
g_dmaCTRLPKT2.ELSOFFSET = 0; // element destination offset
g_dmaCTRLPKT2.FRDOFFSET = 0; // frame destination offset
g_dmaCTRLPKT2.FRSOFFSET = 0; // frame destination offset
g_dmaCTRLPKT2.PORTASGN = PORTB_READ_PORTA_WRITE;
g_dmaCTRLPKT2.RDSIZE = ACCESS_16_BIT; // read size
g_dmaCTRLPKT2.WRSIZE = ACCESS_16_BIT; // write size
g_dmaCTRLPKT2.TTYPE = FRAME_TRANSFER; // transfer type
g_dmaCTRLPKT2.ADDMODERD = ADDR_FIXED; // address mode read
g_dmaCTRLPKT2.ADDMODEWR = ADDR_INC1; // address mode write
g_dmaCTRLPKT2.AUTOINIT = AUTOINIT_ON; // autoinit
/* - setting dma control packets */
dmaSetCtrlPacket(DMA_CH0,g_dmaCTRLPKT1); // CH0--transmit
dmaSetCtrlPacket(DMA_CH1,g_dmaCTRLPKT2); // CH1--receive
dmaSetPriority(DMA_CH0, LOWPRIORITY);
dmaSetPriority(DMA_CH1, HIGHPRIORITY);
spiREG1->INT0 = (spiREG1->GCR1 & 0xFFFEFFFFU) | 0x00010000U; //Enable DMA request for SPI1
dmaReqAssign(DMA_CH0, DMA_REQ1); //Request line 1:SPI1 TX
dmaReqAssign(DMA_CH1, DMA_REQ0); //Request line 0:SPI1 RX
/* - setting the dma channel to trigger on h/w request */
dmaSetChEnable(DMA_CH0,DMA_HW); // Enable channel 0 on hardware event
dmaSetChEnable(DMA_CH1,DMA_HW); // Enable channel 1 on hardware event
dmaEnableInterrupt(DMA_CH1,FTC,DMA_INTA); //Frame transfer complete entry interrupt, where DMA reception is interrupted, meaning that a frame has completed a frame transfer from the peripheral to memory
}
int main(void)
{
/* USER CODE BEGIN (3) */
spiDAT1_t dataconfig1_t;
dataconfig1_t.CS_HOLD = TRUE;
dataconfig1_t.WDEL = TRUE;
dataconfig1_t.DFSEL = SPI_FMT_0;
dataconfig1_t.CSNR = 0xFE;
loadDataPattern2(D_SIZE,SPI1_TX_Data); //F....0
loadDataPattern1(D_SIZE,SPI3_TX_Data); //0....F
rtiInit();
gioInit();
sciInit();
spiInit();
sciEnableNotification(sciREG1,SCI_RX_INT);
rtiEnableNotification(rtiREG1,rtiNOTIFICATION_COMPARE0);
rtiStartCounter(rtiREG1,rtiCOUNTER_BLOCK0);
DMA_Config(); //Configure the DMA channel and enable its frame transmission complete interrupt
spiREG1->GCR1 = (spiREG1->GCR1 & 0xFEFFFFFFU) | 0x01000000U;
spiREG3->GCR1 = (spiREG3->GCR1 & 0xFEFFFFFFU) | 0x01000000U;
_enable_IRQ_interrupt_();
while(1)
{
if(RTI_FLAG==1)
{
TX_DATA[10]+=0x01;
gioToggleBit(gioPORTB,6);
gioToggleBit(gioPORTB,7);
printf("hahaha\r\n");
spiTransmitAndReceiveData(spiREG3, &dataconfig1_t, D_SIZE, SPI3_TX_Data, SPI3_RX_Data);
memset(SPI3_RX_Data,0,D_SIZE);
RTI_FLAG=0;
}
}
/* USER CODE END */
return 0;
}
您可以帮助检查是否需要修改任何内容吗？ 谢谢。
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