Customizing rtc

Hi,

I have just updated our ppc405 bsp (QNX 6.2) to support the rtc(ST
m48t35).
Works fine, but I cannot set the rtc from running qnx, because the tool
“rtc” does not support our rtc-chip.
If the qnx tool “rtc” is directly playing with rtc-registers(Not very
good design, I think), it should be possible to customize it.
But how?

Michael

Good morning,

While rtc does not support the m48t35 (32k x :sunglasses: chipset, it does support the
m48t5x (8k x :sunglasses:, though I’m sure that this is not news to you. That being
said, you should contact your QSSL sales rep to discuss the possiblility of
either obtaining the source, or having some custom engineering done.

Phone:
+1 800 676-0566 (Toll Free in North America Only)
+1 613 591-0931


Failing that, you can write your own version of rtc based on the datasheet
for the m48t35, which can be found at the following location:

http://us.st.com/stonline/books/pdf/docs/2611.pdf

Cheers,
-Brian


+================================================+
Brian K. Hlady bhlady@qnx.com
Technical Account Manager (613) 591 0836
QNX Software Systems, Ltd. extension 9268
+================================================+

“Michael Tasche” <michael.tasche@esd-electronics.com> wrote in message
news:3DEE00FB.6617A006@esd-electronics.com

Hi,

I have just updated our ppc405 bsp (QNX 6.2) to support the rtc(ST
m48t35).
Works fine, but I cannot set the rtc from running qnx, because the tool
“rtc” does not support our rtc-chip.
If the qnx tool “rtc” is directly playing with rtc-registers(Not very
good design, I think), it should be possible to customize it.
But how?

Michael

Hello Brian,

thanks for your answer.
Well, I only wanted to trigger some opinions about the QNX rtc
interface.
I was a bit suprised to find a hardware dependant tool(rtc). For QNX
with it’s very well defined interfaces it looks unusual to me.

Michael


“Brian K. Hlady” schrieb:

Good morning,

While rtc does not support the m48t35 (32k x > :sunglasses: > chipset, it does support the
m48t5x (8k x > :sunglasses:> , though I’m sure that this is not news to you. That being
said, you should contact your QSSL sales rep to discuss the possiblility of
either obtaining the source, or having some custom engineering done.

Phone:
+1 800 676-0566 (Toll Free in North America Only)
+1 613 591-0931

Failing that, you can write your own version of rtc based on the datasheet
for the m48t35, which can be found at the following location:

http://us.st.com/stonline/books/pdf/docs/2611.pdf

Cheers,
-Brian


+================================================+
Brian K. Hlady > bhlady@qnx.com
Technical Account Manager (613) 591 0836
QNX Software Systems, Ltd. extension 9268
+================================================+

“Michael Tasche” <> michael.tasche@esd-electronics.com> > wrote in message
news:> 3DEE00FB.6617A006@esd-electronics.com> …
Hi,

I have just updated our ppc405 bsp (QNX 6.2) to support the rtc(ST
m48t35).
Works fine, but I cannot set the rtc from running qnx, because the tool
“rtc” does not support our rtc-chip.
If the qnx tool “rtc” is directly playing with rtc-registers(Not very
good design, I think), it should be possible to customize it.
But how?

Michael