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HAL Driver for Raspberry PI GPIOs

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5 years 10 months ago #192530 by tommylight
Replied by tommylight on topic HAL Driver for Raspberry PI GPIOs
Try
setp hal_pi_gpio.pin-29.invert_output TRUE
And show us the error, otherwise we can just guess.

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5 years 10 months ago - 5 years 10 months ago #192532 by Markyd
Replied by Markyd on topic HAL Driver for Raspberry PI GPIOs
This is the error. I assume the relevant bit is "parameter or pin 'hal_pi_gpio.pin-29.invert_output' not found". I've tried lots of variations and no luck
Code:
Error report created by /usr/lib/tcltk/linuxcnc/show_errors.tcl: Print file information: RUN_IN_PLACE=no LINUXCNC_DIR= LINUXCNC_BIN_DIR=/usr/bin LINUXCNC_TCL_DIR=/usr/lib/tcltk/linuxcnc LINUXCNC_SCRIPT_DIR= LINUXCNC_RTLIB_DIR=/usr/lib/linuxcnc/modules LINUXCNC_CONFIG_DIR= LINUXCNC_LANG_DIR=/usr/lib/tcltk/linuxcnc/msgs INIVAR=inivar HALCMD=halcmd LINUXCNC_EMCSH=/usr/bin/wish8.6 LINUXCNC - 2.8.0 Machine configuration directory is '/home/pi/linuxcnc/configs/Harrison_Vert_Mill' Machine configuration file is 'Harrison_Vert_Mill.ini' INIFILE=/home/pi/linuxcnc/configs/Harrison_Vert_Mill/Harrison_Vert_Mill.ini VERSION=1.1 PARAMETER_FILE=linuxcnc.var TASK=milltask HALUI=halui DISPLAY=axis COORDINATES=X Y Z KINEMATICS=trivkins Starting LinuxCNC... Starting LinuxCNC server program: linuxcncsvr Loading Real Time OS, RTAPI, and HAL_LIB modules Starting LinuxCNC IO program: io Starting HAL User Interface program: halui twopass:invoked with <> options twopass:found ./Harrison_Vert_Mill.hal twopass:found ./custom.hal twopass:pass0: loadusr -W hal_manualtoolchange twopass: Error in file ./Harrison_Vert_Mill.hal: setting parameter 'hal_pi_gpio.pin-29.invert_output' to 'TRUE' parameter or pin 'hal_pi_gpio.pin-29.invert_output' not found Shutting down and cleaning up LinuxCNC... Removing HAL_LIB, RTAPI, and Real Time OS modules Removing NML shared memory segments Debug file information: Note: Using POSIX realtime 3852 Stopping realtime threads Unloading hal components Note: Using POSIX realtime


And this is how it appears in the HAL file
Code:
setp hal_pi_gpio.pin-29.invert_output TRUE net xenable => hal_pi_gpio.pin-29-out net xstep stepgen.0.step => hal_pi_gpio.pin-32-out net ystep stepgen.1.step => hal_pi_gpio.pin-23-out net zstep stepgen.2.step => hal_pi_gpio.pin-36-out # i use GPIO 14,15,18 for xdir ydir zdir, thats rpin net xdir stepgen.0.dir => hal_pi_gpio.pin-24-out net ydir stepgen.1.dir => hal_pi_gpio.pin-19-out net zdir stepgen.2.dir => hal_pi_gpio.pin-40-out
Last edit: 5 years 10 months ago by Markyd.

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5 years 10 months ago #192542 by Markyd
Replied by Markyd on topic HAL Driver for Raspberry PI GPIOs
still no luck, regardless of what syntax i use. I've tried all the variations below without success. I've even tried the xdir pin but the result is the same. Does the hal_pi_gpio accept invert?

#setp hal_pi_gpio.pin-29-invert true
#setp hal_pi_gpio.pin-29-out-invert true
#setp hal_pi_gpio.pin-29.invert true
#setp hal_pi_gpio.pin-29.invert-output true
#setp hal_pi_gpio.pin-29.invert_output true
#setp hal_pi_gpio.pin-29-out.invert-output TRUE
#setp hal_pi_gpio.pin-29-out.invert_output TRUE
net xenable => hal_pi_gpio.pin-29-out

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5 years 10 months ago #192543 by PCW
Replied by PCW on topic HAL Driver for Raspberry PI GPIOs
Rather than guessing, why don't you look at all available pins/parameters?

halcmd show all hal_pi

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5 years 10 months ago - 5 years 10 months ago #192546 by Markyd
Replied by Markyd on topic HAL Driver for Raspberry PI GPIOs
I'm new to linuxcnc so the 'obvious' isn't yet obvious to me, so thanks for the suggestion. I get the following, which seems to recognise "hal_pi_gpio.pin-29-out <== xenable" but says Dir is "IN" which i don't understand ??



pi@linuxcnc:~ $ halcmd show all hal_pi
Loaded HAL Components:
ID Type Name PID State
31 RT hal_pi_gpio ready

Component Pins:
Owner Type Dir Value Name
31 bit OUT FALSE hal_pi_gpio.pin-03-in ==> limit-z-switch
31 bit OUT FALSE hal_pi_gpio.pin-11-in
31 bit OUT FALSE hal_pi_gpio.pin-12-in
31 bit OUT FALSE hal_pi_gpio.pin-13-in ==> limit-x-switch
31 bit IN FALSE hal_pi_gpio.pin-15-out
31 bit OUT FALSE hal_pi_gpio.pin-16-in ==> limit-y-switch
31 bit OUT FALSE hal_pi_gpio.pin-18-in ==> not-1-in
31 bit IN FALSE hal_pi_gpio.pin-19-out <== ydir
31 bit IN FALSE hal_pi_gpio.pin-21-out
31 bit IN FALSE hal_pi_gpio.pin-22-out
31 bit IN FALSE hal_pi_gpio.pin-23-out <== ystep
31 bit IN FALSE hal_pi_gpio.pin-24-out <== xdir
31 bit IN FALSE hal_pi_gpio.pin-26-out <== spindle-on
31 bit IN FALSE hal_pi_gpio.pin-29-out <== xenable
31 bit IN FALSE hal_pi_gpio.pin-31-out
31 bit IN FALSE hal_pi_gpio.pin-32-out <== xstep
31 bit IN FALSE hal_pi_gpio.pin-33-out
31 bit IN FALSE hal_pi_gpio.pin-35-out
31 bit IN FALSE hal_pi_gpio.pin-36-out <== zstep
31 bit IN FALSE hal_pi_gpio.pin-37-out
31 bit IN FALSE hal_pi_gpio.pin-38-out
31 bit IN FALSE hal_pi_gpio.pin-40-out <== zdir
31 s32 OUT 1093 hal_pi_gpio.read.time
31 s32 OUT 833 hal_pi_gpio.write.time
Last edit: 5 years 10 months ago by Markyd.

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5 years 10 months ago #192547 by Markyd
Replied by Markyd on topic HAL Driver for Raspberry PI GPIOs
There is no mention of the word "Invert" in github.com/LinuxCNC/linuxcnc/blob/master...rivers/hal_pi_gpio.c , is that likely to be significant ?

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