Searching \ for '[SX] SX48 Questions' in subject line. ()
Make payments with PayPal - it's fast, free and secure! Help us get a faster server
FAQ page: www.piclist.com/techref/ubicom/devices.htm?key=sx48
Search entire site for: 'SX48 Questions'.

Exact match. Not showing close matches.
PICList Thread
'[SX] SX48 Questions'
2005\07\03@201347 by DigitalDjn/a

flavicon
face
In SX Microcontrollers, SX/B Compiler and SX-Key Tool, DigitalDj wrote:

Hello!

1. Can i run PWM on all of the input/output pins of the SX48?

2. Can i turn each pin on/off or vary the voltage on each pin 0 to 5 Volts.

3. If i can run PWM on each input/output pin will usb connection to a computer be fast enough to send program information for addressing any of the pins simultaneously?

4. Can i to tell any of 3 inputs what outputs i want them to goto(input/ouput transfer)?


Thanks,
Kevin
---------- End of Message ----------

You can view the post on-line at:
http://forums.parallax.com/forums/default.aspx?f=7&p=1&m=79357
Need assistance? Send an email to the Forum Administrator at forumadmin@parallax.com
The Parallax Forums are powered by dotNetBB Forums, copyright 2002-2005 (http://www.dotNetBB.com)

2005\07\03@215845 by dpatonn/a

flavicon
face
In SX Microcontrollers, SX/B Compiler and SX-Key Tool, dpaton wrote:

Short version:

1. Maybe.
2. Yes and no.
3. Maybe.
4. Maybe.

Longer version:

1. The limits of PWM on all outputs at once will be significant, as there are only 2 hardware timers on the SX48/52. The rest will need to be defined and managed in software, and with 32 PWM outputs, that could get really really tricky. No matter what, it will limit the switchign frequency of the PWM outputs.

2. The pins can be turned high or low. If you want a varying voltage, you'll need ot use PWM, and a filter (resistor and a cap would work) to filter the signal to a nearly DC level.

3. It really depends on what kind of data rate you want for the transfer and the PWM.

4. It depends on what kind of thing you want to route. If it's just a high/low binary level, then it's cake. if it's a fast PWM signal, that will be harder.


What are you trying to do? Have you thought about multiplexing or using multiple processors? Are 32 seperate PWM outputs really required from one chip? Bean did a very nice 8 channel PWM routine for the SX28. 4 or 5 of those with a master controlling them would be easier to build I'm sure...

-dave
---------- End of Message ----------

You can view the post on-line at:
http://forums.parallax.com/forums/default.aspx?f=7&p=1&m=79357#m79365
Need assistance? Send an email to the Forum Administrator at forumadmin@parallax.com
The Parallax Forums are powered by dotNetBB Forums, copyright 2002-2005 (http://www.dotNetBB.com)

2005\07\04@092029 by DigitalDjn/a

flavicon
face
In SX Microcontrollers, SX/B Compiler and SX-Key Tool, DigitalDj wrote:

I want to sequence some led lighting.

I have 8 color modules that i designed with red, green and blue led's. I want to sequence these and do different patterns and color mixing but i also have a color to light circuit(color organ like from the 70's) to add with 3 outputs that are setup to drive the led's and want to be able to send those outputs in any configuration to the outputs of the processor. The lighting will go in a Digital Jukebox that i designed and just about to finish and i want the circuit to run programming from the computer that i will write. The reason i want to use the computer is that it gives me more versatility and user control and expandability over the functions.


1. Does bean have those sx28 chips setup to use more than one?

2. Will i need to put the program on the chip?

3. Do you know where can i find the program?

4. Do you know what frequency of PWM the program is setup for?



I was using the ones from A L Williams and was having some problems and know now what i was doing wrong now, just wasn't getting support to get the problem figured out. I am not opposed to using the sx28's i am not going to pay $25 a piece.


Thanks,
Kevin
---------- End of Message ----------

You can view the post on-line at:
http://forums.parallax.com/forums/default.aspx?f=7&p=1&m=79357#m79395
Need assistance? Send an email to the Forum Administrator at forumadmin@parallax.com
The Parallax Forums are powered by dotNetBB Forums, copyright 2002-2005 (http://www.dotNetBB.com)


'[SX] SX48 Questions'
2007\05\22@190512 by bennettdann/a
flavicon
face
In SX Microcontrollers, SX/B Compiler and SX-Key Tool, bennettdan wrote:

Hello,
  I am new to the SX line of chips but very interested in using them in a couple of new projects.

 
 The SX48 proto board running at 50mhz is what I am looking at. I want to use this for PWM control of a solenoid at about 17-18 khz, the question is can I use the onboard timer for PWM and still be able to process some sensors and other input signals?


Also would the SX/B compiler able to use the internal timer or do I have to start learning assembly?


Thanks for any help..

---------- End of Message ----------

You can view the post on-line at:
http://forums.parallax.com/forums/default.aspx?f=7&p=1&m=192079
Need assistance? Send an email to the Forum Administrator at forumadmin@parallax.com
The Parallax Forums are powered by dotNetBB Forums, copyright 2002-2007 (http://www.dotNetBB.com)

2007\05\22@224249 by JonnyMacn/a

flavicon
face
In SX Microcontrollers, SX/B Compiler and SX-Key Tool, JonnyMac wrote:

SX/B provides simplified access to the timer(s) on the SX48 and may help you; when you download the SX-Key IDE SX/B is included -- check the help file (an update was just posted in this forum) for details.

---------- End of Message ----------

You can view the post on-line at:
http://forums.parallax.com/forums/default.aspx?f=7&p=1&m=192079#m192116
Need assistance? Send an email to the Forum Administrator at forumadmin@parallax.com
The Parallax Forums are powered by dotNetBB Forums, copyright 2002-2007 (http://www.dotNetBB.com)

2007\05\23@044447 by beann/a

flavicon
face
In SX Microcontrollers, SX/B Compiler and SX-Key Tool, bean wrote:

Bennettdan,
 You can use SX/B. Look up the TIMER command in the help file.
 Basically you will use "TIMER1 PWM, value, 2778" value can be from 0 to 2778.
 2778 = 50MHz / 18KHz.
 Remember that timer1 uses pin RB.6 for output and timer2 uses pin RC.2 for output.
 Also remember to make the pin an output.

Bean.

---------- End of Message ----------

You can view the post on-line at:
http://forums.parallax.com/forums/default.aspx?f=7&p=1&m=192079#m192140
Need assistance? Send an email to the Forum Administrator at forumadmin@parallax.com
The Parallax Forums are powered by dotNetBB Forums, copyright 2002-2007 (http://www.dotNetBB.com)

More... (looser matching)
- Last day of these posts
- In 2007 , 2008 only
- Today
- New search...