Hello,
I am using TMS570 processor and currently working on the MibSPI1 module. My slave device is TMP121 which is Accurate Digital Temperature Sensor with SPI Interface. This sensor is connected to SC_0.
Code is generated in the HalCoGen and the setting is the same as in the example example_mibspiDma.c but CS_0 as chipselect is selected. When it is allowed to start the mibspi tranger tg 0 so the clock (SPICLK) is running.
I can´t selected the correct chipselect. CS_0 still has value of 1. Does anyone know how to switch the value of CS_0 to 0?
Thank you for all the answers.
Here is my main:
void main(void)
{
/* USER CODE BEGIN (3) */
uint32 Count=0;
/* - creating a data chunk in system ram to start with ... */
loadDataPattern(D_SIZE,&TX_DATA[0]);
/* - initializing mibspi - enabling tg 0 , length 127 (halcogen file)*/
mibspiInit();
/* - enabling loopback ( this is to emulate data transfer without external wires */
//mibspiEnableInternalLoopback(mibspiREG1);
/* - assigning dma request: channel-0 with request line - 1 */
dmaReqAssign(0,1 );
/* - configuring dma control packets */
dmaConfigCtrlPacket((uint32)(&TX_DATA),(uint32)(&(mibspiRAM1->tx[0].data)),D_SIZE);
/* upto 32 control packets are supported. */
/* - setting dma control packets */
dmaSetCtrlPacket(DMA_CH0,g_dmaCTRLPKT);
/* - setting the dma channel to trigger on h/w request */
dmaSetChEnable(DMA_CH0, DMA_HW);
/* - configuring the mibspi dma , channel 0 , tx line -0 , rxline -1 */
/* - refer to the device data sheet dma request source for mibspi tx/rx */
mibspiDmaConfig(mibspiREG1,0,0,1);
/* - enabling dma module */
dmaEnable();
while(1)
{
mibspiSetData(mibspiREG1, 1, TX_DATA);
/* - start the mibspi transfer tg 0 */
mibspiTransfer(mibspiREG1,1 );
/* ... wait until transfer complete */
while(!(mibspiIsTransferComplete(mibspiREG1,1)))
{
};
/* copy from mibspi ram to sys ram */
mibspiGetData(mibspiREG1, 1, RX_DATA);
}
while(1); /* loop forever */
}
