status_t flexspi_nor_hyperflash_cfi(FLEXSPI_Type *base)
{
/*
* Read ID-CFI Parameters
*/
// CFI Entry
status_t status;
uint32_t buffer[2];
uint32_t data[1] = {0x9800};
status = flexspi_nor_hyperbus_write(base, 0x555, data, 2);
if (status != kStatus_Success)
{
return status;
}
// PRINTF("Entering the ASO mode\r\n");
// ID-CFI Read
// Read Query Unique ASCII String
status = flexspi_nor_hyperbus_read(base, 0x10, &buffer[0], sizeof(buffer));
if (status != kStatus_Success)
{
return status;
}
buffer[1] &= 0xFFFF;
// Check that the data read out is unicode "QRY" in big-endian order
if ((buffer[0] != 0x52005100) || (buffer[1] != 0x5900))
{
status = kStatus_Fail;
// PRINTF("Can not found the HyperFlash!\r\n");
return status;
}
// ASO Exit
data[0] = 0xF000;
status = flexspi_nor_hyperbus_write(base, 0x0, data, 2);
if (status != kStatus_Success)
{
// PRINTF("Can not exit the ASO\r\n");
return status;
}
// PRINTF("Found the HyperFlash by CFI\r\n");
return status;
}
SECTION("itcm") status_t flexspi_nor_hyperflash_cfi(FLEXSPI_Type *base)
{
/*
* Read ID-CFI Parameters
*/
// CFI Entry
status_t status;
uint32_t buffer[2];
uint32_t data = 0x9800;
status = flexspi_nor_hyperbus_write(base, 0x555, &data, 2);
if (status != kStatus_Success)
{
return status;
}
// ID-CFI Read
// Read Query Unique ASCII String
status = flexspi_nor_hyperbus_read(base, 0x10, &buffer[0], sizeof(buffer));
if (status != kStatus_Success)
{
return status;
}
buffer[1] &= 0xFFFF;
// Check that the data read out is unicode "QRY" in big-endian order
if ((buffer[0] != 0x52005100) || (buffer[1] != 0x5900))
{
status = kStatus_Fail;
return status;
}
// ASO Exit
data = 0xF000;
status = flexspi_nor_hyperbus_write(base, 0x0, &data, 2);
if (status != kStatus_Success)
{
return status;
}
return status;
}
