SPI_FLASH_INSTRUCTION_CODE ( 0x4B ) for get the UID 64 Bit MAC of Winbond

[rudi]

hi espressif

have we an official api for comunicate with the SPI_FLASH?
i mean not the read, write function to a SPI_FLASH to store or read bytes.

right, we have an api command to read the manufacturer id

spi_flash_get_id()

but i mean, is there an official api to send instruction code to the SPI FLASH
example :
to read the SPI_FLASH MAC ID - i mean the uinique id ( 64 Bit )

read Winbond - instruction code byte is : 0x4B


there is a unique 64bit MAC/ID at address 0X4B on the flash chip.
this could be very useful in uniquely identifying flash ic in a large manufacturer
and history database for firmware / updates.


the UID number can be used in conjunction with user software methods
to help prevent copying or cloning of a system.


linked to a pdf ( example the W25Q64CV )
because file is too big for upload.

Code: Select all

 
https://www.winbond.com/resource-files/w25q64cv_revh_052214[2].pdf


please have a look to side 55
point : 7.2.3.4 Read Unique ID Number (4BH)

please support this as an api instruction.
please support to can send other instruction code too.

example: 7.2.39 Read Security Registers ( 48h )

there are more interesst instruction code

i have write/request this more as one time i know -


please support this in an api command official


thank you!
best wishes
rudi

[rudi]

push #

[rudi]

Solved and DONE

got my new flash ic's just in time- so i have a short try with this 32Mbit,
and runs like clockwork in my code - i solved this now- and can go next step to make fw better proteced.

if you can support this in your api too - would be fine step -

the UID number can be used in conjunction with user software methods
to help prevent copying or cloning of a system.


"Thanks for your interest in this...

[lihwarlee]

Do you have any sample code about reading Unique ID of W25Q32 ?

Pls send the SAMPLE CODE to me, E-mail: 64569224@qq.com

Thank you.


I have use your SPI driver to debug this, but it is NOT success.

void ReadFlashID(BYTE *pManuId, BYTE *pDevId)
{
BYTE tmp;

spi_master_init(0);

spi_mast_byte_write(0, 0x90);
// spi_byte_write_espslave(0, 0x90);
os_delay_us(200);
// SPI_REG8(PUB_SPICMD_WR_BYTE, 0x90);
spi_mast_byte_write(0, 0x00);
// spi_byte_write_espslave(0, 0x00);

os_delay_us(200);
// SPI_REG8(PUB_SPICMD_WR_BYTE, 0x00);
spi_mast_byte_write(0, 0x00);
// spi_byte_write_espslave(0, 0x00);
os_delay_us(200);
// SPI_REG8(PUB_SPICMD_WR_BYTE, 0x00);
spi_mast_byte_write(0, 0x00);
// spi_byte_write_espslave(0, 0x00);
os_delay_us(200);
// SPI_REG8(PUB_SPICMD_WR_BYTE, 0x00);

// spi_mast_byte_write(0, 0x00);
// spi_byte_write_espslave(0, 0x00);
os_delay_us(200);
// SPI_REG8(PUB_SPICMD_RD_BYTE, 0x00); //read the last byte
spi_byte_read_espslave(0, &tmp);
*pManuId = tmp;
os_delay_us(200);
spi_byte_read_espslave(0, &tmp);
// SPI_REG8(PUB_SPICMD_RD_LASTBYTE, 0x00); //read the last byte
*pDevId = tmp;
}

[rudi]

Do you have any sample code about reading Unique ID of W25Q32 ?

Pls send the SAMPLE CODE to me, E-mail: 64569224@qq.com

Thank you.


I have use your SPI driver to debug this, but it is NOT success.

void ReadFlashID(BYTE *pManuId, BYTE *pDevId)
{
BYTE tmp;

spi_master_init(0);

spi_mast_byte_write(0, 0x90);
// spi_byte_write_espslave(0, 0x90);
os_delay_us(200);
// SPI_REG8(PUB_SPICMD_WR_BYTE, 0x90);
spi_mast_byte_write(0, 0x00);
// spi_byte_write_espslave(0, 0x00);

os_delay_us(200);
// SPI_REG8(PUB_SPICMD_WR_BYTE, 0x00);
spi_mast_byte_write(0, 0x00);
// spi_byte_write_espslave(0, 0x00);
os_delay_us(200);
// SPI_REG8(PUB_SPICMD_WR_BYTE, 0x00);
spi_mast_byte_write(0, 0x00);
// spi_byte_write_espslave(0, 0x00);
os_delay_us(200);
// SPI_REG8(PUB_SPICMD_WR_BYTE, 0x00);

// spi_mast_byte_write(0, 0x00);
// spi_byte_write_espslave(0, 0x00);
os_delay_us(200);
// SPI_REG8(PUB_SPICMD_RD_BYTE, 0x00); //read the last byte
spi_byte_read_espslave(0, &tmp);
*pManuId = tmp;
os_delay_us(200);
spi_byte_read_espslave(0, &tmp);
// SPI_REG8(PUB_SPICMD_RD_LASTBYTE, 0x00); //read the last byte
*pDevId = tmp;
}

hi
how you have "connect" the spi_master_init(0); by pins to your flash chip ?
do you connect a second spi flash or will you read from boot flash as connected is Quad?
be sure you have read the datasheet, there are Standard, Dual and Quad Instructions.

try to read the modes are can used:
http://www.winbond-usa.com/resource-fil ... 202015.pdf

examples
side 61, 62, 63
and then you know how you must handle UID:
side 64
and jedec ( manufacturer )
side 65

btw, jedec is supported in last Flash Tool, the src is in the folder too.
viewtopic.php?f=5&t=433

Code: Select all


..

 def get_flash_id(self):
   try:
       self.flash_begin(0,0)
       self.write_reg(self.ESP_DATA_ADDR, 0 , 0 , 0 )
       time.sleep(0.01)
       self.write_reg(self.ESP_CMD_ADDR , self.ESP_CMD_RDID , self.ESP_CMD_RDID , 0 )
       time.sleep(0.01)
       flash_id = self.read_reg(self.ESP_DATA_ADDR)
       print "get flash id : 0x%08x"%flash_id
       self.flash_manufacturer_id = flash_id&0xff
       self.flash_device_id = ((flash_id>>16)&0xff | (flash_id &( 0xff<<8)))
       print " manufacturer_id: 0x%x\r\n"%self.flash_manufacturer_id
       print " device_id: 0x%x\r\n"%self.flash_device_id
       return True
   except:
       print "get flash id error"
       return False
   
   #self.mp.textCtrl_BinPath3.AppendText("\r\nFLASH:\r\n")
   #self.mp.textCtrl_BinPath3.AppendText("manufacturer_id: %xh\r\n"%manufacturer_id)
   #self.mp.textCtrl_BinPath3.AppendText("device_id:%xh\r\n"%device_id)

..



best wishes
rudi

[rudi]

hint

UID = only in SPI MODE
JEDEC = SPI & QPI Mode

hope now is clear:
and why we have no SDK_API for the Quad connected Flash
if you want read the UID from Quad connected Flash
you must overlap a user SPI Mode. ( use bitbanged mode, its the easiest way for his )
search.php?keywords=overlap+spi

hope this helps

best wishes
rudi

[adhopraz]

Tks Rudy, It's work for me