Hello Experts,
I am unable to read the byte of data from eeprom in particular address after written the data.
i am getting the response from eeprom through miso line while reading the status register and i have checked again by changing the status register values. I am using tc397 as master.
this is my code
void EEPROM_Write_Byte(uint16 address,uint8 data)
{
EEPROM_Write_Enable();
uint8 txdata[4] = {0x02, (address >> 8) & 0XFF, address & 0xFF, data}; /* WRITE command, MSB address, LSB address, one byte Data */
IfxQspi_SpiMaster_exchange(&g_qspi.spiMasterChannel,txdata,NULL,4);
Wait_UntilReady(); /* wait for write operation completion*/
waitTime(IfxStm_getTicksFromMilliseconds(BSP_DEFAULT_TIMER, 200)); /* Time Delay for 10 milli seconds */
}
void EEPROM_Write_Enable()
{
uint8 command = 0x06;
IfxQspi_SpiMaster_exchange(&g_qspi.spiMasterChannel, &command, NULL_PTR,1);
waitTime(IfxStm_getTicksFromMilliseconds(BSP_DEFAULT_TIMER, 30)); /* Time Delay for 10 milli seconds */
}
uint8 EEPROM_Readstatus(void)
{
uint8 txdata[2] = {0x05,0x00};
uint8 rxdata[2]={0};
IfxQspi_SpiMaster_exchange(&g_qspi.spiMasterChannel, txdata, rxdata, 2);
return rxdata[1];
}
void Wait_UntilReady(void)
{
while(EEPROM_Readstatus() & 0x01); /* Checking write in progress bit */
}
void EEPROM_Read_Byte(uint16 address)
{
uint8 cmd[3] = {0x03, (address >> 8) & 0xFF, address & 0xFF}; /* READ command, MSB address, LSB address*/
uint8 rx_data[3] = {0};
IfxQspi_SpiMaster_exchange(&g_qspi.spiMasterChannel,cmd,rx_data,3);
//IfxQspi_SpiMaster_exchange(&g_qspi.spiMasterChannel,NULL,&rxdata,1);
}
