Greetings all; This is interesting.
If I swap my homemade cable between the pi's gpio header and the 7i90, it reads 4 bytes of 00000000 00000000 00000000 00000000 and echo's it on screen. If I unplug the 40 pin gpio, I get exactly the same thing. I have verified the cable which is around 2" shorter than my homemade cable. The adaptor is made on the OSHPark board designed fpr the 7i90, and its been checked against the drawings. The homemade one has 82 ohm r's for the terms, the one made up on the OSHPark board, supposedly 88 ohms, are 87.something. My cable almost works, getting this for the startup error: Found file(REL): ./hm2-7i90-stepper.hal Note: Using POSIX realtime hm2: loading Mesa HostMot2 driver version 0.15 Unknown board: HOST???? hm2_rpspi: rtapi_app_main: Operation not permitted (-1) ./hm2-7i90-stepper.hal:32: waitpid failed /usr/bin/rtapi_app hm2_rpspi ./hm2-7i90-stepper.hal:32: /usr/bin/rtapi_app exited without becoming ready ./hm2-7i90-stepper.hal:32: insmod for hm2_rpspi failed, returned -1 But the madeup adaptor, while it rings good, only reads back 32 bits of zero. Is this a helpfull clue? Thanks, gotta go take my baby to the steakhouse. Tried to put higher resolution monitor on it but its being difficult. Later I guess. That up-shop box ought to be in the states. 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) Genes Web page <http://geneslinuxbox.net:6309/gene> ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
