PI-LCNC Project

hello everyone

I found a project about raspberry pie on "GitHub", which allows raspberry pie to connect to the parallel port control board to control CNC.

This is the website of the project：
github.com/ChrisWag91/PI-LCNC

Thank Chris wag91 for his dedication. But I also have a lot of doubts about this project
 
This is a test system。

I have a big question about the GPIO components of raspberry pi
I enter in the terminal: 
      loadrt hal_ pi_ gpio
      show all hal_pi_gpio

Why are the pins displayed in the terminal different from those displayed in "linuxcnc Hal configuration"
 
 

I want to use pin 11 of the parallel port control board. I see that pin 11 of the parallel port control board is connected to pin 23 of raspberry pi. I tried to change my ". HAL" file, but I got an error

 
 

Hello

they are not different
on left it says
hal_pi_gpio,pin-03-out
on right it says
hal_pi_gpio
|_ pin-03-out

it is same name, just formatted 2 ways,
1) as a full name
Fred Flintstone
2) versus family name, given name
Flintstone
|_ Fred

hth TomP

Hello
maybe this will help...

please take care,
gpio pin numbers
are not
raspberry pi header pin numbers

---from the hal_pi_gpio.c file----
// elinux.org/index.php?title=RPi_Low-level...herals&printable=yes
// Rev 1 Raspberry:
static unsigned char rev1_gpios[] = {0, 1, 4, 7, 8, 9, 10, 11, 14, 15, 17, 18, 21, 22, 23, 24, 25};
static unsigned char rev1_pins[] = {3, 5, 7, 26, 24, 21, 19, 23, 8, 10, 11, 12, 13, 15, 16, 18, 22};

// Rev2 Raspberry:
static unsigned char rev2_gpios[] = {2, 3, 4, 7, 8, 9, 10, 11, 14, 15, 17, 18, 22, 23, 24, 25, 27};
static unsigned char rev2_pins[] = {3, 5, 7, 26, 24, 21, 19, 23, 8, 10, 11, 12, 15, 16, 18, 22, 13};

// Raspberry2/3:
static unsigned char rpi2_gpios[] = {2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27 };
static unsigned char rpi2_pins[] = {3, 5, 7, 29, 31, 26, 24, 21, 19, 23, 32, 33, 8, 10, 36, 11, 12, 35, 38, 40, 15, 16, 18, 22, 37, 13 };

for the raspberry pi you are using ( one of 3 sets above)
the upper line is the gpio number
the lower line is the rpi header pin

so try Halrun
and use setp to turn on and off gpio pins
and a voltmenter to see where the rpi pin is

i wrote a different driver that only uses rpi header pin number
because thats the thing i can probe and connect to
It wasnt popular ;-/

HTH tomp

Thank you for your answer. I think I should learn something about raspberry pi (～￣▽￣)～(～￣▽￣)～

tjtr33 wrote:

Hello
maybe this will help...

please take care,
gpio pin numbers
are not
raspberry pi header pin numbers

---from the hal_pi_gpio.c file----
// elinux.org/index.php?title=RPi_Low-level...herals&printable=yes
// Rev 1 Raspberry:
static unsigned char rev1_gpios = {0, 1, 4, 7, 8, 9, 10, 11, 14, 15, 17, 18, 21, 22, 23, 24, 25};
static unsigned char rev1_pins = {3, 5, 7, 26, 24, 21, 19, 23, 8, 10, 11, 12, 13, 15, 16, 18, 22};

// Rev2 Raspberry:
static unsigned char rev2_gpios = {2, 3, 4, 7, 8, 9, 10, 11, 14, 15, 17, 18, 22, 23, 24, 25, 27};
static unsigned char rev2_pins = {3, 5, 7, 26, 24, 21, 19, 23, 8, 10, 11, 12, 15, 16, 18, 22, 13};

// Raspberry2/3:
static unsigned char rpi2_gpios = {2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27 };
static unsigned char rpi2_pins = {3, 5, 7, 29, 31, 26, 24, 21, 19, 23, 32, 33, 8, 10, 36, 11, 12, 35, 38, 40, 15, 16, 18, 22, 37, 13 };

for the raspberry pi you are using ( one of 3 sets above)
the upper line is the gpio number
the lower line is the rpi header pin

so try Halrun
and use setp to turn on and off gpio pins
and a voltmenter to see where the rpi pin is

i wrote a different driver that only uses rpi header pin number
because thats the thing i can probe and connect to
It wasnt popular ;-/

HTH tomp


 

I typed "show hal_pi_gpio" in the terminal, and the terminal printed out many GPIO pins.

I use "setp hal_pi_gpio.pin-40-out 1" to control the pin output, but nothing happens, and the pin voltage is still 0V.

I think the GPIO pin printed out by the terminal is the number of the Raspberry Pi header. I did not forget to enter "halcmd start", but nothing happens to the Raspberry Pi pins.

I don't know why.`(*>﹏<*)′`(*>﹏<*)′

My English is not good, please forgive me. The same thing has different names in Chinese and English, so I often cause confusion when using translation software.

Hello,
I have exactly the same problem and I am wondering if you have solved this problem ?
it would help me a lot.
thank you