I'm trying to make communicate between ps7_spi_0 and axi_quad_spi. This is block diagram. FCLK_CLK0 is 100 Mhz. SPI_0 is 166.666666 Mhz
C code :
/*
* helloworld.c: simple test application
*
* This application configures UART 16550 to baud rate 9600.
* PS7 UART (Zynq) is not initialized by this application, since
* bootrom/bsp configures it to baud rate 115200
*
* ------------------------------------------------
* | UART TYPE BAUD RATE |
* ------------------------------------------------
* uartns550 9600
* uartlite Configurable only in HW design
* ps7_uart 115200 (configured by bootrom/bsp)
*/
#include <stdio.h>
#include "platform.h"
#include "xil_printf.h"
#include "xspips.h"
#include "xspi.h"
#include "sleep.h"
#define SPI_DEVICE_ID XPAR_XSPIPS_0_DEVICE_ID
#define QSPI_DEVICE_ID XPAR_SPI_0_DEVICE_ID
static XSpiPs SpiInstance;
static XSpi Spi;
u16 TxBuffer[4];
u16 RxBuffer[4];
int main()
{
XSpiPs_Config *SpiConfig;
int Status,i;
init_platform();
int NumBytesRcvd;
printf("SPI Example\n");
SpiConfig = XSpiPs_LookupConfig(SPI_DEVICE_ID);
if (NULL == SpiConfig) {
return XST_FAILURE;
}
Status = XSpiPs_CfgInitialize(&SpiInstance, SpiConfig,SpiConfig->BaseAddress);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
Status = XSpiPs_SelfTest(&SpiInstance);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
XSpiPs_SetOptions(&SpiInstance, XSPIPS_MASTER_OPTION | XSPIPS_FORCE_SSELECT_OPTION);
XSpiPs_SetClkPrescaler(&SpiInstance, XSPIPS_CLK_PRESCALE_64);
XSpi_Initialize( &Spi, QSPI_DEVICE_ID );
Status = XSpi_SelfTest( &Spi );
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
XSpi_Reset(&Spi);
XSpi_Start(&Spi);
XSpi_IntrGlobalDisable(&Spi);
TxBuffer[0] = 0xa0a0;
TxBuffer[1] = 0x0505;
TxBuffer[2] = 0xa0a0;
TxBuffer[3] = 0x0505;
while (1) {
XSpiPs_SetSlaveSelect(&SpiInstance, 0x00);
Status = XSpiPs_Transfer(&SpiInstance, (u8*)&TxBuffer, (u8*)&RxBuffer, 8);
if(Status != XST_SUCCESS) {
printf("XSpiPs_Transfer failed\n")
}
NumBytesRcvd = 0;
//XSpi_SetControlReg(&Spi,0x60);
XSpi_WriteReg((SpiInstance.SpiConfig.BaseAddr), XSPIPS_TXD_OFFSET, TxBuffer[0]);
XSpi_WriteReg((SpiInstance.SpiConfig.BaseAddr), XSPIPS_TXD_OFFSET, TxBuffer[1]);
//XSpi_SetControlReg(&Spi,0x02);
XSpi_WriteReg((SpiInstance.SpiConfig.BaseAddr), XSPIPS_TXD_OFFSET, TxBuffer[2]);
XSpi_WriteReg((SpiInstance.SpiConfig.BaseAddr), XSPIPS_TXD_OFFSET, TxBuffer[3]);
while (!(XSpi_ReadReg(Spi.BaseAddr, XSP_SR_OFFSET) & XSP_SR_TX_EMPTY_MASK));
while ((XSpi_ReadReg(Spi.BaseAddr, XSP_SR_OFFSET) & XSP_SR_RX_EMPTY_MASK) == 0) {
printf("In While\n");
RxBuffer[NumBytesRcvd++] = XSpi_ReadReg((Spi.BaseAddr), XSP_DRR_OFFSET);
}
for(i=0;i<4;i++){
printf("rx %04x \n", RxBuffer[i]);
}
usleep(1000000);
}
cleanup_platform();
return 0;
}
Console (uart) out:
SPI Example In While In While In While In While In While In While rx a0a0 rx 0505 rx a0a0 rx 0505 XSpiPs_Transfer failed rx a0a0 rx 0505 rx a0a0 rx 0505 XSpiPs_Transfer failed In While In While In While In While rx a005 rx a005 rx a005 rx a005 XSpiPs_Transfer failed rx a005 rx a005 rx a005 rx a005 XSpiPs_Transfer failed In While In While In While In While rx a005 rx a005 rx a005 rx a005