On Friday 20 March 2020 09:14:08 Peter C. Wallace wrote: > On Thu, 19 Mar 2020, Gene Heskett wrote: > > Date: Thu, 19 Mar 2020 21:55:55 -0400 > > From: Gene Heskett <[email protected]> > > Reply-To: "Enhanced Machine Controller (EMC)" > > <[email protected]> > > To: [email protected] > > Subject: Re: [Emc-users] A hal question? > > > > On Thursday 19 March 2020 19:12:37 Jon Elson wrote: > >> On 03/19/2020 04:02 PM, Gene Heskett wrote: > >>> Greetings; I am trying to reduce the f/r error in an ATS667 based > >>> encoder. > >>> > >>> The index pulse is turned upside down by a reversal of spindel > >>> direction. Tts the nature of the beast to remain in this stable > >>> state until the approach of the triggering ferrous metal causes > >>> the first reversal which the edge ignores, and then goes back true > >>> or false as the ferrous piece crosses the center. > >>> > >>> > >>> > >>> Does anyone see any problems with that? > >> > >> The index pulse is only used during the initial synch to the > >> spindle, then the encoder is counted > >> up and down during reversals, without looking at the index > >> again. So, rigid tapping doesn't care > >> that the index signal from the encoder does something > >> different when the spindle is running in > >> reverse. It has been this way since I did the first ATS667 > >> encoder hack some years ago. > >> > >> Jon > > > > Thats good news, but it looks as If I'll have to burn a new card to > > get the pin Peter just told me about, unless mesaflash has grown the > > ability to work thru an rpspi interface. I did have a machine with > > all the card firmware on it but had to put it on the G0704 with a > > new SSD drive after I apparently blew a pci bus driver during a > > local t-storm. The parport on that box isn't currently in use so > > I'll have to see if that machine can program a new 7i90HD since I > > don't believe the pi4 can w/o building a hardware parport for it. > > Mesaflash works over SPI on RPI3 and RPI4 (and probably many other > SBCs) because it uses the kernel SPI driver, not direct hardware > access. Note that running an older hm2_rpspi driver disables the > kernel SPI driver so you may have to reboot to run mesaflash if you > have run LinuxCNC (this has been fixed in master a few months ago) > > sudo mesaflash --device 7i90 --interface spi --addr [spi device name] > --readhmid > > (I forget what the first RPI SPI device is named, maybe /dev/spi0.0?) > After a reboot, there are no /dev/spi anything, and the sample commandline: sudo mesaflash --device 7i90 --interface spi --addr /devspi0 --readhmid returns: /sbin/mesaflash: 1: /sbin/mesaflash: Syntax error: "(" unexpected I had put the mesaflash's in /sbin and sudo chmod +x them I have, in /lib/modules/4.19.71-rt24-v7l+/kernel/drivers/spi -rw-r--r-- 1 root root 11556 Feb 6 14:37 spi-bcm2835aux.ko -rw-r--r-- 1 root root 15892 Feb 6 14:37 spi-bcm2835.ko -rw-r--r-- 1 root root 9620 Feb 6 14:37 spi-bitbang.ko -rw-r--r-- 1 root root 18056 Feb 6 14:37 spidev.ko -rw-r--r-- 1 root root 13616 Feb 6 14:37 spi-gpio.ko And useing spidev.ko: i@rpi4:~ $ sudo /sbin/mesaflash --device 7i90 --interface spi --addr /dev/spidev.ko --readhmid /sbin/mesaflash: 1: /sbin/mesaflash: Syntax error: "(" unexpected
Next? > > Thanks Jon, and stay safe. > > > > Cheers, Gene Heskett > > -- > > "There are four boxes to be used in defense of liberty: > > soap, ballot, jury, and ammo. Please use in that order." > > -Ed Howdershelt (Author) > > If we desire respect for the law, we must first make the law > > respectable. - Louis D. Brandeis > > Genes Web page <http://geneslinuxbox.net:6309/gene> > > > > > > _______________________________________________ > > Emc-users mailing list > > [email protected] > > https://lists.sourceforge.net/lists/listinfo/emc-users > > Peter Wallace > Mesa Electronics > > (\__/) > (='.'=) This is Bunny. Copy and paste bunny into your > (")_(") signature to help him gain world domination. > > > > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) If we desire respect for the law, we must first make the law respectable. - Louis D. Brandeis Genes Web page <http://geneslinuxbox.net:6309/gene> _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
