NIOS SOPC Flash Memory Interface (CFI)

Thanks to MSchmitt I made a bit of progress with his suggestion.

I can now do alt_flash_open_dev(CFI_FLASH_NAME).

But I still can't access the QUERY bytes.

Here's a simplified version of my code ...# define FLASH_CMD_BUFFERED_PROGRAM_SETUP 0xE8# define FLASH_CMD_BUFFERED_PROGRAM_CONFIRM 0xD0# define FLASH_CMD_BLOCK_ERASE_SETUP 0x20# define FLASH_CMD_BLOCK_ERASE_CONFIRM 0xD0# define FLASH_CMD_BLOCK_LOCK_SETUP 0x60# define FLASH_CMD_BLOCK_LOCK 0x01# define FLASH_CMD_BLOCK_UNLOCK 0xD0# define FLASH_CMD_CLEAR_STATUS 0x50# define FLASH_CMD_READ_DEVICE_ID 0x90# define FLASH_CMD_RESTORE_READ_MODE 0xFF# define FLASH_CMD_READ_STATUS 0x70# define FLASH_CMD_READ_QUERY 0x98

int main()

{

int i;

alt_putstr("Nios II welcomes you to Spyder Q module !\n");

alt_putstr("\n");

IOWR_16DIRECT(CFI_FLASH_BASE, 0x55, FLASH_CMD_READ_QUERY);

for (i=0x00; i<=0x1f; i+=2)

{

alt_printf("QRY=x%x ", IORD_16DIRECT(CFI_FLASH_BASE, i));

}

alt_putstr("\n==\n");

IOWR_16DIRECT(CFI_FLASH_BASE, 0x0, FLASH_CMD_READ_DEVICE_ID);

for (i=0x0; i<=0x1F; i+=2)

{

alt_printf("DEV=x%x ", IORD_16DIRECT(CFI_FLASH_BASE, i));

}

}

Where i expect the Query data to be printed, I get exactly the same data as for the FLASH_CMD_READ_DEVICE_ID. The FLASH_CMD_READ_DEVICE_ID data agrees with the spec for my device.

ideas?