<html><head><meta http-equiv="Content-Type" content="text/html charset=windows-1252"><base href="x-msg://6040/"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div><blockquote type="cite"><div lang="EN-US" link="blue" vlink="purple" style="font-family: Helvetica; font-size: medium; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><div class="WordSection1" style="page: WordSection1; "><div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif; "><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125); ">Spi one does not rely on wiring pi. AFAIK wiringpi does not offer spi support but I could be wrong.</span></div></div></div></div></blockquote><div><br></div><div>Hi Ivica, </div><div><br></div><div>yes it does and it has a C api. It is actually very good and easy to implement. </div><div><br></div><div>Thanks for all info on the external. I'll check it out as soon as I have a bit of time again…</div><div><br></div><div>best,</div><div><br></div><div>Jaime</div><div><br></div><div><br></div><div><br></div><div><br></div><br><blockquote type="cite"><div lang="EN-US" link="blue" vlink="purple" style="font-family: Helvetica; font-size: medium; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><div class="WordSection1" style="page: WordSection1; "><div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif; "><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125); "><o:p></o:p></span></div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif; "><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125); "> </span></div></div><div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif; "><o:p> </o:p></div></div><div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif; ">Also, how are you getting the multiple pwm streams?<o:p></o:p></div></div><div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif; "><span style="color: rgb(31, 73, 125); "> </span></div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif; "><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125); ">I partially rely on wiringpi inside disis_gpio for software pwm on all pins (I say partially because wiringpi can only create a new thread for software pwm but does not offer ability to close the thread other than exiting the program, which is not an option for an environment like pd). So, each opened pin will have a separate high priority thread that gives you a 1000Hz PWM. disis_gpio also supports hardware pwm on pin 18 and that one has some kind of a logarithmic curve and as such behaves distinctly different but I simply did not want to go into anything higher than 1000Hz as that would choke the cpu.<o:p></o:p></span></div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif; "><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125); "> </span></div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif; "><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125); ">HTH<o:p></o:p></span></div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif; "><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125); "> </span></div></div><div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif; ">best,<o:p></o:p></div></div><div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif; "><o:p> </o:p></div></div><div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif; ">J<o:p></o:p></div></div><div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif; "><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125); "> </span></div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif; "><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125); "> </span></div></div><div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif; "><o:p> </o:p></div></div><div><div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif; ">On Mar 20, 2014, at 1:16 PM, Ivica Ico Bukvic <<a href="mailto:ico@vt.edu" style="color: purple; text-decoration: underline; ">ico@vt.edu</a>> wrote:<o:p></o:p></div></div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif; "><br><br><o:p></o:p></div><div><div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif; ">On 03/20/2014 12:37 PM, David Medine wrote:<o:p></o:p></div></div><blockquote style="margin-top: 5pt; margin-bottom: 5pt; "><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif; ">FYI<br><br>There is also a RPi GPIO object for Pd by Miller Puckette here:<a href="http://msp.ucsd.edu/syllabi/206.13w/index.htm" style="color: purple; text-decoration: underline; "><br>http://msp.ucsd.edu/syllabi/206.13w/index.htm</a><br><br>and the same code with a makefile and build for UDOO here:<a href="https://github.com/cmuartfab/Udoo/tree/dem-rev/puredata/gpio" style="color: purple; text-decoration: underline; "><br>https://github.com/cmuartfab/Udoo/tree/dem-rev/puredata/gpio</a><br><br>I did see the note from garthz about the architecture collisions. I will attend to this. Anyway, make sure to use the gpio.l_arm version -- just delete the other two to avoid problems.<o:p></o:p></div></blockquote><p class="MsoNormal" style="margin: 0in 0in 12pt; font-size: 12pt; font-family: 'Times New Roman', serif; "><br>Indeed, disis_gpio is loosely based on gpio. It however also offers things that gpio (AFAIK) doesn't, like multithreaded pusle-width-modulation (hardware on pin 18 and software on all pins) with an Arduino-like 0-1023 range. disis_spi is a completely new beast that allows interfacing with MCP3008 AD converter and provides up to 8 analog input channels that can provide high-resolution streams with values 0-1023. So, pd-l2ork externals essentially look to provide an Arduino-like environment.<o:p></o:p></p></div><div style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif; ">_______________________________________________<br><a href="mailto:Pd-list@iem.at" style="color: purple; text-decoration: underline; ">Pd-list@iem.at</a><span class="Apple-converted-space"> </span>mailing list<br>UNSUBSCRIBE and account-management -><span class="Apple-converted-space"> </span><a href="http://lists.puredata.info/listinfo/pd-list" style="color: purple; text-decoration: underline; ">http://lists.puredata.info/listinfo/pd-list</a><o:p></o:p></div></div><p class="MsoNormal" style="margin: 0in 0in 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif; "></p></div></div></blockquote></div><br></body></html>