Hi,
Why there is a need to use a Fast Continuous Selection Format?
Here is a result I got with normal one and modified code. You can test.
I used DSPI3, which is running from 80Mhz, you should recalculate CTAR for your 40Mhz. I set tcsc,tasc, tdt to half of bit rate.
void init_DSPI_3(void)
{
DSPI_3.MCR.R = 0x80010001; /* Configure DSPI as master */
DSPI_3.MODE.CTAR[0].R = 0x38004445; /* Configure CTAR0 , baudrate = 1.25MHz */
DSPI_3.MCR.B.HALT = 0x0; /* Exit HALT mode: go from STOPPED to RUNNING state*/
}
static uint8_t Write_Byte(uint16_t cmd, uint16_t data)
{
uint16_t response = 0x0000;
DSPI_3.PUSHR.PUSHR.R = (uint32_t)((uint32_t)(cmd<<16) + data); /**/
while (DSPI_3.SR.B.RFDF != 1){} /* Wait for Receive FIFO Drain Flag = 1 */
response = (uint8_t)DSPI_3.POPR.R; /* Read data received by master SPI */
DSPI_3.SR.R = 0x90020000;
return((uint8_t)((0x02 & response) >> 1));
}
void EEPROMWriteByte(void)
{
#define EEPROM_CMD_WREN 6
#define EEPROM_CMD_WRDI 4
#define EEPROM_CMD_WRITE 2
#define EEPROM_CMD_RDSR 5
uint8_t write_response,i, DataSize=5;
write_response = Write_Byte(0x0001,EEPROM_CMD_WREN);
write_response = Write_Byte(0x8001,EEPROM_CMD_WRITE); /*command write */
write_response = Write_Byte(0x8001,0); //high address byte/
write_response = Write_Byte(0x8001,1); //Middle address byte/
write_response = Write_Byte(0x8001,0); //low address byte/
for (i = 0; i < (DataSize-1); i++) /* Datasize equal 5, plan to send 1, 2, 3, 4, 5 to EEPROM via MOSI*/
{
write_response = Write_Byte(0x8001,i+1);
}
write_response = Write_Byte(0x0001,i+1); // write last data byte
//read register status EEPROM_CMD_RDSR equal 5
write_response = Write_Byte(0x8001,EEPROM_CMD_RDSR);
write_response = Write_Byte(0x0001,0); // dummy byte to read status
write_response = Write_Byte(0x0001,EEPROM_CMD_WRDI);
}
If needed I can test "fast" mode too, but believe this is not needed.
BR, Petr
Hi Wang,
Thanks a lot for your support.
I have tested the hardware the CS0 is always high.
By writing CS0 high and low but it always high.
Please see the below code and let me know your comments.
void SUIL2_Init(void)
{
SIUL2.MSCR[3].R = 0x32870002; // A[3] pin as SPI_0 CS0 output
SIUL2.MSCR[0].R = 0x32840002; // A[0] pin as SPI_0 SCK output
SIUL2.MSCR[1].R = 0x32840002; // A[1] pin as SPI_0 SOUT output
SIUL2.MSCR[2].B.IBE = 1; // A[2]: Enable pad for input - SPI_0 SIN
SIUL2.IMCR[47].B.SSS = 2; // SPI_0 SIN: connected to pad C[7]
}
while(1)
{
SetPadLow(92);
SetPadLow(3);
timeout = 100000000uL;
while ((--timeout) != 0uL);
SetPadHigh(92);
SetPadHigh(3);
timeout = 100000000uL;
while ((--timeout) != 0uL);
}
Could you please check the hardware schematic also whether it is correct or not.
Thanks & Regards,
Ramanjineyulu.
