STLED316S

[punmack]

Posted on April 10, 2013 at 00:55

I would like some clear instructionsthat inform me how to communicate with the STLED316S.

I have the STEVAL-ICB003V board,viewing the communications on a logic analyzer, and attempting toduplicate the setup does not work.

I am connected to the STLED316S with auC, can get only DIG1_LED to illuminate.

It there is someone at ST that knowshow to point to a memory location and write control values, please doshare.

An example that tells how to set theSTB line low while pointing to a memory location + page file would beuseful.

Example, write to STLED316S to setnumber of digits, then set to send series of values to each digit fordisplay.

In addition, I am using 3.3V for theserial communications, I am powering the STLED316S with 5V, andpulling DIN/DOUT up with 3.3V. Is this the proper method?

[punmack]

Posted on April 11, 2013 at 15:08 ________________ Attachments : screenshot.png : https://st--c.eu10.content.force.com/sfc/dist/version/download/?oid=00Db0000000YtG6&ids=0680X000006Hzru&d=%2Fa%2F0X0000000bQW%2FquG2ARske7UDKaj60xgqVCJFWOvw2mqT0EFxd.IFUNE&asPdf=false

[punmack]

Posted on April 11, 2013 at 15:10

Here is the 3rd time I have attached the screenshot.png

________________ Attachments : screenshot.png : https://st--c.eu10.content.force.com/sfc/dist/version/download/?oid=00Db0000000YtG6&ids=0680X000006HzoK&d=%2Fa%2F0X0000000bQX%2F2RYyIe12.s7Mtoh5glynesYYHtbNvfIp0fhfT9ea41E&asPdf=false

[dthedens23]

Posted on April 11, 2013 at 17:41

I can see the attachement.  I still question the 0xB1.  The SPI module can be configured to send LSB or MSB first by setting/clearing SPI_CR1:LSBFIRST.  

[punmack]

Posted on April 12, 2013 at 19:37

Where did you find this wisdom?

My datasheet (Jan 2008 Rev 1) has no mention of either of the two commands you mention (LSBFIRST) nor any address register bit info.I can write the name of my ST sales person on the display, but I do not know why 🙂I can not see the attachment I posted, what is the trick?

[Tesla DeLorean]

Posted on April 12, 2013 at 20:00

Got to go to view attachments/properties. Or hard link from your post.

https://my.st.com/public/STe2ecommunities/mcu/Lists/STM32Discovery/Attachments/5615/screenshot.png

[punmack]

Posted on April 12, 2013 at 22:18

OK, go to jump through some hoops to get places, like attachments. 

Seems to me that the questions that I need answers to, like the first question from my last e-mail get ignored.  That is, where did you find the MSB/LSB first information?  I am thinking that ST forgot to post application information that tells one how to point-to and write the control registers.   Either it is a secret how to control this device, or I am dumb as a rock. Could be both I guess??

[punmack]

Posted on April 14, 2013 at 02:44

Forgive me for I am in the wrong aria, but there is no forum for the part I am attempting to design with.  Ignore my last question, now I know that the MSB/LSB reference is the STM32 register setting, and not the communication protocol outlined in the STLED316S.

I will check back on 4-14-2013, if anyone at ST has some working experience please step forward. Again, to be as clear as possible, I am communicating with the STLED316S, and what it is responding the way it does is a mystery.  I need clear instructions how to control the device.  Such as how to point to a register address and preform a meaningful write in order to set control parameters the write commands.Making clever remarks, and not having practical experience with the STLED316S, does not advance my design.  Rather, I look to making my own LED driver with p-chan. MOSFET and an 8-bit shift register instead.  Takes less time, and now that I have priced the parts, may cost less!  Then, I am the boss 🙂