gpio offset

Try dmesg | grep gpio, it should give you the base address of each GPIO peripheral plus the base (offset) of the register map for the individual device registers.

-Gary

Step 1
uname -a
Linux zedboard 3.12.0 #1 SMP PREEMPT Sat Mar 29t13:42:20 MDT 2014 armv7l GNU/Lin
ux
Step 2
dmesg | grep gpio
[    0.039407] zynq_gpio e000a000.gpio:tgpio att0xe000a000 mapped to 0xe080e000
[    0.746760] input: gpio_keys.7 as /devices/gpio_keys.7/input/input0
[   64.860929] pmodoled_gpio: module istfrom the staging directory, the quality
is unknown, you have been warned.
[   64.873794] pmodoled-gpio-spi [zed_oled] SPItProbing
Step 3
ls /sys/class/gpio
exporttgpiochip0  unexport
Step 4
export_sw
++ Exporting switches
Step 5
ls /sys/class/gpio
exporttgpio66tgpio68tgpio70tgpio72t   unexport
gpio65tgpio67  gpio69tgpio71  gpiochip0
Step 6
switches 01010101
read_sw
0x55 85  this works okay
Step 7
trying the following since the leds were after the switches.

less export_led
#!/bin/bash
echo "++ Exporting leds "                
for i in 0 1 2 3 4 5 6 7;
do                      
        led=$(($i+73));
  techo $led > /sys/class/gpio/export;
        echo out > /sys/class/gpio/gpio$led/direction;
done;

++ Exporting leds
./export_led: line 6: echo: write error: Device or resource busy
./export_led: line 7: /sys/class/gpio/gpio73/direction: No such file or director
y
./export_led: line 6: echo: write error: Device or resource busy
./export_led: line 7: /sys/class/gpio/gpio74/direction: No such file or director
y
./export_led: line 6: echo: write error: Device or resource busy
./export_led: line 7: /sys/class/gpio/gpio75/direction: No such file or director
y
./export_led: line 6: echo: write error: Device or resource busy
./export_led: line 7: /sys/class/gpio/gpio76/direction: No such file or director
y
./export_led: line 6: echo: write error: Device or resource busy
./export_led: line 7: /sys/class/gpio/gpio77/direction: No such file or director
y
./export_led: line 6: echo: write error: Device or resource busy
./export_led: line 7: /sys/class/gpio/gpio78/direction: No such file or director
y
./export_led: line 6: echo: write error: Device or resource busy
./export_led: line 7: /sys/class/gpio/gpio79/direction: No such file or director
y
./export_led: line 6: echo: write error: Device or resource busy
./export_led: line 7: /sys/class/gpio/gpio80/direction: No such file or director
y
Step 8 no new gpio73-gpio80.
ls /sys/class/gpio
export  gpio66  gpio68  gpio70  gpio72     unexport
gpio65  gpio67  gpio69  gpio71  gpiochip0

Step 9 modified export_led
#!/bin/bash
echo "++ Exporting leds "
for i in 0 1 2 3 4 5 6 7;
do
        led=$(($i+57));
        echo $led > /sys/class/gpio/export;
        echo out > /sys/class/gpio/gpio$led/direction;
done;
./export_led
++ Exporting leds
./export_led: line 6: echo: write error: Device or resource busy
./export_led: line 7: /sys/class/gpio/gpio57/direction: No such file or director
y
./export_led: line 6: echo: write error: Device or resource busy
./export_led: line 7: /sys/class/gpio/gpio58/direction: No such file or director
y
./export_led: line 6: echo: write error: Device or resource busy
./export_led: line 7: /sys/class/gpio/gpio59/direction: No such file or director
y
./export_led: line 6: echo: write error: Device or resource busy
./export_led: line 7: /sys/class/gpio/gpio60/direction: No such file or director
y
./export_led: line 6: echo: write error: Device or resource busy
./export_led: line 7: /sys/class/gpio/gpio61/direction: No such file or director
y
./export_led: line 6: echo: write error: Device or resource busy
./export_led: line 7: /sys/class/gpio/gpio62/direction: No such file or director
y
./export_led: line 6: echo: write error: Device or resource busy
./export_led: line 7: /sys/class/gpio/gpio63/direction: No such file or director
y
./export_led: line 6: echo: write error: Device or resource busy
./export_led: line 7: /sys/class/gpio/gpio64/direction: No such file or director
y
step 10
ls /sys/class/gpio no new gpio57-gpio64
export  gpio66  gpio68  gpio70  gpio72     unexport
gpio65  gpio67  gpio69  gpio71  gpiochip0
The initial system.bit was ZedBoard_Linux_Design.
fpga.bin was generated with cf_adv7511_zed and uses
less /etc/init.d/fpga-image-load.sh
#!/bin/sh

BITFILE=/usr/share/fpga.bin

case "$1" in
  start)
    if [ ! -e /dev/xdevcfg ]; then
      mknod /dev/xdevcfg c 259 0
    fi
    if [ ! -e "${BITFILE}" ]; then
      echo "FPGA bitfile ${BITFILE} does not exist"
      exit 1
    fi
    cat "${BITFILE}" > /dev/xdevcfg
    result=`cat /sys/devices/amba.[0123]/f8007000.devcfg/prog_done`
    if [ $result -ne 1 ]; then
      echo "ERROR configuring FPGA, logic is not configured!"
      exit 1
    fi
    ;;
esac

Any and all help is appreciated.
Thanks

Take a look at the Zynq Linux Speedway, Lab 3.1 and see if that is helpful. It is based on an older version of the tools/linux but may still be on target.The Implementing Linux on the Zynq 7000 SoC can be downloaded from here:

http://www.zedboard.org/support/trainings-and-videos

Let us know how it works.

-Gary

Hello All
My problem is that I cannot get the 8 leds to work.  The 8 switches are working.
ls /sys/class/gpio/
export    gpiochip0  unexport
root@zedboard:/etc/init.d# export_sw
++ Exporting switches
root@zedboard:/etc/init.d# cat /usr/bin/export_sw
#!/bin/bash
#This appears to work with fpga.bin loaded
echo "++ Exporting switches "
for i in 0 1 2 3 4 5 6 7;
do
        sw=$(($i+65));
        echo $sw > /sys/class/gpio/export;
done;
root@zedboard:/etc/init.d# ls /sys/class/gpio/
export    gpio66    gpio68    gpio70    gpio72       unexport
gpio65    gpio67    gpio69    gpio71    gpiochip0
cat /usr/bin/read_sw
#!/bin/sh
value=0;
for i in 0 1 2 3 4 5 6 7;
do
        sw=$((72-$i));
        sw_tmp=`cat /sys/class/gpio/gpio$sw/value`;
        value=$(($value*2));
        value=$(($value+$sw_tmp));
done;
printf "0x%x %d
" $value $value;
setting the switches 10101010
root@zedboard:/etc/init.d# read_sw
0xaa 170

I recently built a system.bit and with meta-topic a fpga.bin
It appears that the fpga.bin is being loaded since I have a script
ck_fpga  that I extracted from /etc/init.d/fpga-image-load.sh
#!/bin/sh
#extracted from /etc/init.d/fpga-image-load.sh
#used to check if fpga.bin was loaded.
result=`cat     /sys/devices/amba.[0123]/f8007000.devcfg/prog_done`
echo $result
root@zedboard:~# ./ck_fpga
1

I would think that 8 Leds would be 73-80.
cat /usr/bin/export_led
#!/bin/bash
#This appears to work with fpga.bin loaded
echo "++ Exporting switches "
for i in 0 1 2 3 4 5 6 7 ;
do
        led=$(($i+73));
        echo $led > /sys/class/gpio/export;
        echo out > /sys/class/gpio/gpio$led/direction;
done;
This gets errors.
Could this be the problem ZedBoard_Linux_Design net processing_system7_0_GPIO<7>  LOC = T22 while the
cf_adv7511_zed uses NET processing_system7_0_GPIO_pin[11].  I have gone over this many times but can not determine the offsets needed to get the 8 Leds to work.   Any and all help is appreciated. Thanks
                                           ZedBoard_Linux_Design
system.ucf
############################
#                          #
# On-board LED's           #
#                          #
############################
net processing_system7_0_GPIO<7>  LOC = T22 | IOSTANDARD = LVCMOS33;    # LD0
net processing_system7_0_GPIO<8>  LOC = T21 | IOSTANDARD = LVCMOS33;    # LD1
net processing_system7_0_GPIO<9>  LOC = U22 | IOSTANDARD = LVCMOS33;    # LD2
net processing_system7_0_GPIO<10> LOC = U21 | IOSTANDARD = LVCMOS33;    # LD3
net processing_system7_0_GPIO<11> LOC = V22 | IOSTANDARD = LVCMOS33;    # LD4
net processing_system7_0_GPIO<12> LOC = W22 | IOSTANDARD = LVCMOS33;    # LD5
net processing_system7_0_GPIO<13> LOC = U19 | IOSTANDARD = LVCMOS33;    # LD6
net processing_system7_0_GPIO<14> LOC = U14 | IOSTANDARD = LVCMOS33;    # LD7

############################
#                          #
# On-board Slide Switches  #
#                          #
############################
net processing_system7_0_GPIO<15> LOC = F22 | IOSTANDARD = LVCMOS33;    # SW0
net processing_system7_0_GPIO<16> LOC = G22 | IOSTANDARD = LVCMOS33;    # SW1
net processing_system7_0_GPIO<17> LOC = H22 | IOSTANDARD = LVCMOS33;    # SW2
net processing_system7_0_GPIO<18> LOC = F21 | IOSTANDARD = LVCMOS33;    # SW3
net processing_system7_0_GPIO<19> LOC = H19 | IOSTANDARD = LVCMOS33;    # SW4
net processing_system7_0_GPIO<20> LOC = H18 | IOSTANDARD = LVCMOS33;    # SW5
net processing_system7_0_GPIO<21> LOC = H17 | IOSTANDARD = LVCMOS33;    # SW6
net processing_system7_0_GPIO<22> LOC = M15 | IOSTANDARD = LVCMOS33;    # SW7
GPIO
    MIO GPIO MIO
        EMIO GPIO (Width) 60
MIO 0   GPIO gpio[0] disabled
MIO 9   GPIO gpio[9] disabled
MIO 10   GPIO gpio[10] disabled
           .
           .
           .
MIO 15   GPIO gpio[15] disabled
Ports
              Connected Port
(IO_IF)GPIO_0 Connected to External Ports
              External Posts::processing_system7_0_MIO
       GPIO   External Posts::processing_system7_0_GPIO IO [59:0]
       GPIO_I                                             I [59:0]
       GPIO_O                                             O [59:0]
       GPIO_T                                             O [59:0]


                                           cf_adv7511_zed
system.ucf
NET processing_system7_0_GPIO_pin[11]    LOC = F22  | IOSTANDARD="LVCMOS25";  # "SW0"
NET processing_system7_0_GPIO_pin[12]    LOC = G22  | IOSTANDARD="LVCMOS25";  # "SW1"
NET processing_system7_0_GPIO_pin[13]    LOC = H22  | IOSTANDARD="LVCMOS25";  # "SW2"
NET processing_system7_0_GPIO_pin[14]    LOC = F21  | IOSTANDARD="LVCMOS25";  # "SW3"
NET processing_system7_0_GPIO_pin[15]    LOC = H19  | IOSTANDARD="LVCMOS25";  # "SW4"
NET processing_system7_0_GPIO_pin[16]    LOC = H18  | IOSTANDARD="LVCMOS25";  # "SW5"
NET processing_system7_0_GPIO_pin[17]    LOC = H17  | IOSTANDARD="LVCMOS25";  # "SW6"
NET processing_system7_0_GPIO_pin[18]    LOC = M15  | IOSTANDARD="LVCMOS25";  # "SW7"

NET processing_system7_0_GPIO_pin[19]    LOC = T22  | IOSTANDARD="LVCMOS33";  # "LD0"
NET processing_system7_0_GPIO_pin[20]    LOC = T21  | IOSTANDARD="LVCMOS33";  # "LD1"
NET processing_system7_0_GPIO_pin[21]    LOC = U22  | IOSTANDARD="LVCMOS33";  # "LD2"
NET processing_system7_0_GPIO_pin[22]    LOC = U21  | IOSTANDARD="LVCMOS33";  # "LD3"
NET processing_system7_0_GPIO_pin[23]    LOC = V22  | IOSTANDARD="LVCMOS33";  # "LD4"
NET processing_system7_0_GPIO_pin[24]    LOC = W22  | IOSTANDARD="LVCMOS33";  # "LD5"
NET processing_system7_0_GPIO_pin[25]    LOC = U19  | IOSTANDARD="LVCMOS33";  # "LD6"
NET processing_system7_0_GPIO_pin[26]    LOC = U14  | IOSTANDARD="LVCMOS33";  # "LD7"
GPIO
    MIO GPIO MIO
        EMIO GPIO (Width) 32
MIO 0   GPIO gpio[0] disabled
MIO 9   GPIO gpio[9] disabled
MIO 10   GPIO gpio[10] disabled
           .
           .
           .
MIO 15   GPIO gpio[15] disabled
Ports
              Connected Port
(IO_IF)GPIO_0 Connected to External Ports
       GPIO   External Posts::processing_system7_0_GPIO_pin IO [31:0]
       GPIO_I                                             I [31:0]
       GPIO_O                                             O [31:0]
       GPIO_T                                             O [31:0]

Hello All
/usr/bin/export_sw
#!/bin/bash
#This appears to work with fpga.bin loaded
echo "++ Exporting switches "
for i in 0 1 2 3 4 5 6 7;
do
        sw=$(($i+65));
        echo $sw > /sys/class/gpio/export;
done;
/usr/bin/read_sw
#!/bin/sh
value=0;
for i in 0 1 2 3 4 5 6 7;
do
        sw=$((72-$i));
        sw_tmp=`cat /sys/class/gpio/gpio$sw/value`;
        value=$(($value*2));
        value=$(($value+$sw_tmp));
done;
printf "0x%x %d
" $value $value;
echo default-on > /sys/class/leds/ld0:red/trigger
or
echo 0 > /sys/class/leds/ld7:red/brightness
echo 1 > /sys/class/leds/ld7:red/brightness
Thanks to
Mike Looijmans

    TOPIC Embedded Systems
    Eindhovenseweg 32-C, NL-5683 KH Best
    Postbus 440, NL-5680 AK Best
    Telefoon: (+31) (0) 499 33 69 79
He See the documentation, just google on "/sys/class/leds" for directions.also provided a site for help on leds
meta-topic and poky also fixed sound ADAU1761
Thanks all