df>>
>>
>>
>> Application note for using flash as emulated eeprom.
>>
>>
>>
>>
>> --------
>> --------
>> *From:* Jacob Falzon >
<mailto:freetel-codec2@lists.sourceforge.net>
<mailto:freetel-codec2@lists.sourceforge.net
<mailto:freetel-codec2@lists.sourceforge.net>>
*Subject:* Re: [Freetel-codec2] UART, SPI Pins on SM1000
Thanks a lot for the help.
t;>
>>>
>>> www.st.com/resource/en/application_note/dm00036065.pdf
>>> <http://www.st.com/resource/en/application_note/dm00036065.pdf>
>>>
>>>
>>> Application note for using flash as emulated eeprom.
>>>
>>>
>>>
>>> ---------------------------
lists.sourceforge.net
<mailto:freetel-codec2@lists.sourceforge.net>
*Subject:* Re: [Freetel-codec2] UART, SPI Pins on SM1000
Thanks a lot for the help.
I'll be sure to take a look at it.
I was afraid that the system was going to run out of memory if I
expanded on the program
lication note for using flash as emulated eeprom.
>
>
> --
> *From:* Jacob Falzon
>
> *Sent:* 13 March 2018 12:48
> *To:* freetel-codec2@lists.sourceforge.net
> *Subject:* Re: [Freetel-codec2] UART, SPI Pins on SM1000
>
> Thanks a lot for the help.
>
> I&#x
ication_note/dm00036065.pdf>
>
>
> Application note for using flash as emulated eeprom.
>
>
>
>
> *From:* Jacob Falzon
> *Sent:* 13 March 2018 12:48
> *To:* freetel-codec2@lists.sourceforge.net
> *
ge.net
Subject: Re: [Freetel-codec2] UART, SPI Pins on SM1000
Thanks a lot for the help.
I'll be sure to take a look at it.
I was afraid that the system was going to run out of memory if I expanded on
the program.
Ran into something else I couldn't understand on the schematic.
Not all
Thanks a lot for the help.
I'll be sure to take a look at it.
I was afraid that the system was going to run out of memory if I expanded
on the program.
Ran into something else I couldn't understand on the schematic.
Not all the VDD and VSS pins of the F4 are connected externally together.
Is th
The F4 flash is organised into sectors,
small, medium, large
the small sectors are organised into small pages, can be erased on their
own while the micro is running, and are useful in conjunction with a
wear levelling algorthm for NV memory, I describe below.
I would suggest say choosing a s
The EEPROM is not used - plenty of storage on board the stm32f4. Not
sure how much memory is being used at run time, but its usually pretty
tight. Less than half the flash is being used I think.
- David
On 10/03/18 02:11, Jacob Falzon wrote:
Thanks!
If you don't mind, I would also like to
Thanks!
If you don't mind, I would also like to ask you regarding the EEPROM.
Is it currently being used by the board or is it also implemented for
expansion purposes? I thought it might have been used for storing prefences
to be loaded but apparently from the comments its eems to be done from
Fl
Hi Jacob,
1/ Test is an unused feature at present, you can treat it like a GPIO
2/ We use an opto-isolator so we don't have to provide a switch to the
external radios PTT circuit. An electro-mechanical relay would have
been an alternative. It's usually a mechanical switch on your PTT mic.
-
Hello again,
there are another two pins for the SM1000 that I wanted to know more about.
The Test pin connects to a Self-Test circuit. What exactly is this used to
test for please?
Also there is another pin named CPPT that connects to an optoisolator. I
understand that the CPPT signal is used to
Thank you very much for your attention.
Have a good night!
On 24 Feb 2018 8:26 PM, "David Rowe" wrote:
> Hi Jacob,
>
> These pins are just broken out as GPIOs or for future expansion.
>
> - David
>
> On 25/02/18 00:54, Jacob Falzon wrote:
>
>> Hi there,
>>
>> i was looking at the schematic and
Hi Jacob,
These pins are just broken out as GPIOs or for future expansion.
- David
On 25/02/18 00:54, Jacob Falzon wrote:
Hi there,
i was looking at the schematic and I came upon the SPI pins and the UART
pins in the schematic.
The SPI pins ( SCK, MOSI, MISO, NSS) do not seem to be connect
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