Re: 25LC1024 Reading
Date: August 30, 2015 08:27PM
Hi Chris,
by analysis of the source code of PonyProg2000 I have found that I am not able to add eeprom 25LC1024 because of 24-bit addressing. PonyProg uses variable of integer type for addressing spi eeproms, therefore maximal size is 32768 Bytes. But 25LC1024 has 131072 Bytes. So firstly I have an idea that I can change variable type by another one with "larger" size. But the further analysis showed me that the majority of source code for eeproms uses integer type variables for addressing and also as a return values for further processing of size by another program functions. These functions are designed for processing integer variable types as well.
Unfortunately I do not have enough experiences for such a big changes in so many source files and I do not know all internal program dependencies as well. Maybe author of PonyProg200 Mr.Lanconelli could help.
Best regards
sonix
sonix Wrote:
-------------------------------------------------------
> Hi Chris,
>
> I have read datasheet for SPI eeprom 25LC1024
> (size 1 Mbit = 128 KByte) and there is 24-bit
> addressing needed. PonyProg2000 uses 16-bit
> addressing for big spi eeproms (size 8-64 Kbits).
> Because of incorrect addressing in read sequence
> you will get FF's in PonyProg's "buffer" window.
>
> I have shortly looked into PonyProg source code
> and theoretically it could be added into it.
> Unfortunately I do not have eeprom 25LC1024,
> therefore it will be much harder for me to
> implement / test it in praxis. I will try to
> prepare it within one week and I will let you
> know.
>
> Best regards
> sonix
>
>
> ChrisCam Wrote:
> --------------------------------------------------
> -----
> > Hi everyone,
> >
> > I am trying to read a 25LC1024 EEPROM content
> with
> > PonyProg, but this device isn't in the device
> > list.
> > So I tried to choose 25256...
> >
> > I made the SPI EEPROM Adapter that we can find
> in
> > PonyProg WebSite and the base board.
> > I conect a DB9 on my serial PC port.
> > While reading, whith scope, i can see a CLK, SI
> > and SO signal but the software displays only
> > FFFF...
> >
> > Can someone help me?
> >
> > i am using Windows 7 Professional SP1
> > PonyProg117h because i have no signal with
> > PonyProg 2000!!
> >
> > Best regards