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    coolpi 4b python3 gpio operation compatable with raspberry pi

    Scheduled Pinned Locked Moved Pi 4B
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    • J
      jack_admin @花月
      last edited by

      @花月
      系统中若无该命令,请将附件文件拷贝到/usr/sbin/,再执行chmod a+x /usr/sbin/gpio_coolpi

      gpio_coolpi

      SPI与I2C操作使用标准python或标准C调用API

      花 1 Reply Last reply Reply Quote 0
      • 花
        花月 @jack_admin
        last edited by

        @jack_admin 这个附件名称是什么,下载是数字的名称,有后缀嘛?

        J 1 Reply Last reply Reply Quote 0
        • J
          jack_admin @花月
          last edited by

          @花月 可以拷贝重命名/usr/sbin/gpio_coolpi

          1 Reply Last reply Reply Quote 0
          • D
            dreamer @george
            last edited by

            @george Is there any way to use GPIOs without sudo priviledge, such as in a ros package?

            大法师大 1 Reply Last reply Reply Quote 0
            • 大法师大
              大法师 @dreamer
              last edited by 大法师

              @dreamer
              hi, please add extra operation for coolpi user.

              Add rules for normal user:

              sudo echo "SUBSYSTEM==\"gpio*\", ACTION==\"add\", PROGRAM=\"/bin/bash -c 'chown root:coolpi /sys/class/gpio/export /sys/class/gpio/unexport;chmod 220 /sys/class/gpio/export /sys/class/gpio/unexport'\"" > /lib/udev/rules.d/99-gpio.rules
              sudo echo "SUBSYSTEM==\"gpio*\", ACTION==\"add\", PROGRAM=\"/bin/bash -c 'chown root:coolpi /sys%p/direction /sys%p/value /sys%p/edge /sys%p/active_low; chmod 0660 /sys%p/direction /sys%p/value /sys%p/edge /sys%p/active_low'\"" >> /lib/udev/rules.d/99-gpio.rules
              sudo reboot
              

              Check rules:

              coolpi@coolpi:~/Desktop$ cat /lib/udev/rules.d/99-gpio.rules 
              SUBSYSTEM=="gpio*", ACTION=="add", PROGRAM="/bin/bash -c 'chown root:coolpi /sys/class/gpio/export /sys/class/gpio/unexport;chmod 220 /sys/class/gpio/export /sys/class/gpio/unexport'"
              SUBSYSTEM=="gpio*", ACTION=="add", PROGRAM="/bin/bash -c 'chown root:coolpi /sys%p/direction /sys%p/value /sys%p/edge /sys%p/active_low; chmod 0660 /sys%p/direction /sys%p/value /sys%p/edge /sys%p/active_low'"
              

              Test case:

              coolpi@coolpi:~/Desktop$ echo 115 > /sys/class/gpio/export 
              coolpi@coolpi:~/Desktop$ ls /sys/class/gpio/gpio115
              active_low  device  direction  edge  power  subsystem  uevent  value
              coolpi@coolpi:~/Desktop$ echo out > /sys/class/gpio/gpio115/direction 
              coolpi@coolpi:~/Desktop$ echo 1 > /sys/class/gpio/gpio115/value 
              coolpi@coolpi:~/Desktop$ echo 0 > /sys/class/gpio/gpio115/value 
              coolpi@coolpi:~/Desktop$
              

              Screenshot from 2023-01-16 13-14-27.png

              jack@cool-pi.com

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              • A
                AugustRobot_Zou
                last edited by AugustRobot_Zou

                请问跟RPi.GPIO的函数完全兼容吗?
                GPIO.setwarnings(False) 之类的函数都有吗
                @大法师

                大法师大 1 Reply Last reply Reply Quote 0
                • 大法师大
                  大法师 @AugustRobot_Zou
                  last edited by

                  @AugustRobot_Zou
                  还未完整测试所有接口。

                  jack@cool-pi.com

                  1 Reply Last reply Reply Quote 0
                  • 大法师大 大法师 referenced this topic on
                  • A
                    AugustRobot_Zou @大法师
                    last edited by AugustRobot_Zou

                    @大法师
                    请问有支持python3.6的 .whl安装包吗?
                    我的docker环境是unbuntu18.04+py2.7+py3.6.9的,CPi.GPIO-1.0.0-cp38-cp38-linux_aarch64.whl安装不了。
                    或者有没有其他方式,驱动gpio

                    大法师大 1 Reply Last reply Reply Quote 0
                    • 大法师大
                      大法师 @AugustRobot_Zou
                      last edited by 大法师

                      @AugustRobot_Zou
                      所有的底层封装操作都是基于访问/sys/class/gpio/

                      https://www.cool-pi.com/topic/72/coolpi-4b硬件扩展四-gpio

                      jack@cool-pi.com

                      A 1 Reply Last reply Reply Quote 0
                      • A
                        AugustRobot_Zou @大法师
                        last edited by AugustRobot_Zou

                        @大法师
                        请问能麻烦编译一个python3.6.9的安装包吗?
                        使用CPi.GPIO-1.0.0-cp38-cp38-linux_aarch64.whl,必须装上python3.8。
                        我的docker环境是ubuntu18.04+python3.6.9+ROS。

                        装了python3.8后,同时存在python3.8和python3.6,导致原本的代码程序很多python版本适配问题,这几天为这个问题搞得头大,很难兼顾 CPi.GPIO库和原来的程序,模块脚本的#!/usr/bin/python3 只能配置2选1(3.8 or 3.6 )。

                        80fa368b-5533-4b1d-b029-60c55cbe2106-图片.png

                        大法师大 J 2 Replies Last reply Reply Quote 0
                        • 大法师大
                          大法师 @AugustRobot_Zou
                          last edited by

                          @AugustRobot_Zou okay!

                          jack@cool-pi.com

                          1 Reply Last reply Reply Quote 0
                          • J
                            jack_admin @AugustRobot_Zou
                            last edited by

                            @AugustRobot_Zou CPi.GPIO-1.0.0-cp36-cp36m-linux_aarch64.whl

                            A 1 Reply Last reply Reply Quote 0
                            • A
                              AugustRobot_Zou @jack_admin
                              last edited by

                              @jack_admin @大法师
                              Really appreciate your help!
                              Now our system is basically compatible with coolp4B,which used to running on raspberry-pi4B.

                              1 Reply Last reply Reply Quote 0
                              • A AugustRobot_Zou referenced this topic on
                              • J jack_admin referenced this topic on
                              • X
                                xingzhan2012
                                last edited by xingzhan2012

                                有python3.9版本的吗

                                J 1 Reply Last reply Reply Quote 0
                                • J
                                  jack_admin @xingzhan2012
                                  last edited by

                                  @xingzhan2012 有。在帖子最顶楼

                                  X 1 Reply Last reply Reply Quote 0
                                  • X
                                    xingzhan2012 @jack_admin
                                    last edited by

                                    @jack_admin 谢谢

                                    1 Reply Last reply Reply Quote 0
                                    • M
                                      Macs
                                      last edited by Macs

                                      Does the coolpi have a DPI mode for the gpio like the RPI4?

                                      J 1 Reply Last reply Reply Quote 0
                                      • J
                                        jack_admin @Macs
                                        last edited by

                                        @Macs said in coolpi 4b python3 gpio operation compatable with raspberry pi:

                                        Does the coolpi have a DPI mode for the gpio like the RPI4?

                                        WiringPi ?

                                        M 1 Reply Last reply Reply Quote 0
                                        • M
                                          Macs @jack_admin
                                          last edited by

                                          @jack_admin I mean can output video signal on the gpio using with custom timings, like you can on the RPI4?

                                          1 Reply Last reply Reply Quote 0
                                          • O
                                            Orion
                                            last edited by

                                            请问支持C++语言吗

                                            J 1 Reply Last reply Reply Quote 0
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