Re: Trying to erase a sector in the cfm. However, in simulation, I never get a busy signal. help

NBRUM · ‎06-17-2019

// Address values for the control and status register (csr)
parameter FLASH_STATUS_REG_ADDR          = 1'b0,    // only for read operations
parameter FLASH_CONTROL_REG_ADDR         = 1'b1,    // for read and write operations
// Write protection parameters 
// Write protection 1'b1 for enabled and 1'b0 for disabled.
parameter SECTOR_1_WRT_PROTECTION_INDICE = 23,      // writedata indice that needs to change
parameter SECTOR_2_WRT_PROTECTION_INDICE = 24,      // writedata indice that needs to change     
parameter SECTOR_3_WRT_PROTECTION_INDICE = 25,      // writedata indice that needs to change
parameter SECTOR_4_WRT_PROTECTION_INDICE = 26,      // writedata indice that needs to change
parameter SECTOR_5_WRT_PROTECTION_INDICE = 27,      // writedata indice that needs to change
parameter ENABLE_WRT_PROTECTION          = 1'b1,    // enables the write protection for a section
parameter DISABLE_WRT_PROTECTION         = 1'b0,    // disables the write protection for a section
parameter READ                           = 1'b1  ,
parameter WRITE                          = 1'b1   
    // Erase on-chip flash operation 
    parameter ERASE_INDICE_START             = 20,      // writedata indice start for writedata
    parameter ERASE_INDICE_END               = 22,      // writedata indice end for writedata    
    parameter SECTOR_1                       = 3'b001,  // writedata value to erase sector 1
    parameter SECTOR_2                       = 3'b010,  // writedata value to erase sector 2
    parameter SECTOR_3                       = 3'b011,  // writedata value to erase sector 3
    parameter SECTOR_4                       = 3'b100,  // writedata value to erase sector 4
    parameter SECTOR_5                       = 3'b101,  // writedata value to erase sector 5
onchip_flash_csr_writedata[SECTOR_3_WRT_PROTECTION_INDICE]    = DISABLE_WRT_PROTECTION;
onchip_flash_csr_writedata[ERASE_INDICE_END : ERASE_INDICE_START] = SECTOR_3;
onchip_flash_csr_address   = LASH_CONTROL_REG_ADDR;
onchip_flash_csr_write      = WRITE;

My code above is part of my module and should yield a busy erase signal but does not. Any advice would be great. I am using Questa. For more context. I am trying to design an module for manual RSU because I can not use Nios.

JohnT_Intel · ‎07-01-2019

Hi,

We do not support simulation on On Chip Flash IP. You can only use the On Chip Flash IP with preloaded data. Other function is not supported

NBRUM · ‎07-01-2019

It was due to the timing. I had an incorrect clock. Once I fixed that the ip core simulated fine.

JohnT_Intel · ‎07-02-2019

Hi,

I am glad that the issue is due to timing where using incorrect clock.