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Please do not post a support request without first reading and following the advice in https://retropie.org.uk/forum/topic/3/read-this-first

retropie and waveshare 32b?

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  • S
    senkun @rog585
    last edited by 24 Jul 2016, 15:07

    @rog585 said in retropie and waveshare 32b?:

    @senkun do you know how to increase the frames per second to make it run smoother?

    Nope. Limitation of bandwidth on SPI. 3.5" and 4" screens will have tearing and lag, they are 480x320 compared to the 3.2" screen with 320x240. So they're struggling to push double the pixels. If you need a larger screen for gaming, most people just go composite or HDMI. There are a lot of cheap nobrand composite 4.3" screens you can try, or use the 5" or 7" HDMI screens from waveshare.

    Using the guide I wrote above, second post on this thread, you can get waveshare 3.2", 3.5" and 4" TFT screens working.

    If you're using their 3.5" or 4" screens, substitute these lines:

    git clone https://github.com/swkim01/waveshare-dtoverlays.git
    sudo cp waveshare-dtoverlays/waveshare35a-overlay.dtb /boot/overlays/

    But if your linux kernel is 4.4 or newer, use this instead:

    sudo cp waveshare-dtoverlays/waveshare35a-overlay.dtb /boot/overlays/waveshare35a.dtbo

    S B 2 Replies Last reply 9 Aug 2016, 21:21 Reply Quote 0
    • topic:timeago-later,16 days
    • S
      suprjami @senkun
      last edited by 9 Aug 2016, 21:21

      @senkun said in retropie and waveshare 32b?:

      Nope. Limitation of bandwidth on SPI. 3.5" and 4" screens will have tearing and lag

      Can't you increase the speed of SPI bus to (somewhat) work around this?

      1 Reply Last reply Reply Quote 0
      • topic:timeago-later,3 months
      • R
        rugur78tr
        last edited by 27 Oct 2016, 08:55

        hello guys,

        first of all I wanna thank to all that helped me alot to set up wareshare 3.5 inch LCD to my Rpi for Retropie. senkun's explanation is quite good.
        but Ive a problem, frame rate is so bad to play games, and really annoying after struggling to set the LCD up.

        I ve the latest Retropie 4.0.2 and Waveshare 3.5 inch LCD. tried to setup the speed and set it to 20000000, cuz when its more than it, I got invalid colors. (Pls do not set the speed lower than xx million, if yes, you need to wait a lot to boot - I made it 5 and to solve it quickly re installed retropie) and fps=60, its still annoying and have late response.

        Do you have any solution or suggestions how to work it faster? thanks in advance.

        1 Reply Last reply Reply Quote 0
        • topic:timeago-later,11 days
        • R
          rugur78tr
          last edited by 7 Nov 2016, 12:44

          hello again,

          after many times research, I couldnt find a way to speed up my 3,5 inch waveshare LCD, instead I bought 3,2 inch same brand. it works awesome, I tried it with Gameboy Advance and Neo Geo roms its just perfect. and the thing that make me feel great is playing Quake 3 on my lit LCD w/o any problems.

          I dont know if I do the calculation right but, 3,5 has double pixels , and 3,2 is 46~48mhz, 3,5 16~18mhz. so I can say that 3,2 is faster 6 x than 3,5.
          :):)

          thanks everyone.

          1 Reply Last reply Reply Quote 0
          • topic:timeago-later,about a month
          • B
            Bikash Nath @senkun
            last edited by 19 Dec 2016, 16:06

            @senkun EVEN I'M FACING WITH A LAGGED GAMEPLAY EVEN ON NES ROMS. I'M USING A WAVESHARE 32B 3.2 LCD SCREEN AND IT HAS BEEN CONFIGURED AS PER THE INSTRUCTIONS SHOWN HERE. BUT I'M AT A LOSS AS TO HOW TO TWEAK THE FPS. INFO ON THAT PART WOULD BE HIGHLY GRATIFIED.

            1 Reply Last reply Reply Quote 0
            • R
              rugur78tr
              last edited by 20 Dec 2016, 12:46

              hi Bikash,

              I m using 3.2 waveshare and it works fine, I will share the codes or whole config file with you , once Im at home.

              1 Reply Last reply Reply Quote 0
              • topic:timeago-later,9 days
              • N
                nebraxus
                last edited by 29 Dec 2016, 20:51

                All works up until I run the "make" command and then I got a whole load of errors popup.

                [100%] Building C object CMakeFiles/fbcp.dir/main.c.o
                /home/osmc/rpi-fbcp/main.c:8:22: fatal error: bcm_host.h: No such file or directory
                #include <bcm_host.h>
                ^
                compilation terminated.
                CMakeFiles/fbcp.dir/build.make:54: recipe for target 'CMakeFiles/fbcp.dir/main.c.o' failed
                make[2]: *** [CMakeFiles/fbcp.dir/main.c.o] Error 1
                CMakeFiles/Makefile2:60: recipe for target 'CMakeFiles/fbcp.dir/all' failed
                make[1]: *** [CMakeFiles/fbcp.dir/all] Error 2
                Makefile:76: recipe for target 'all' failed
                make: *** [all] Error 2
                osmc@osmc:~/rpi-fbcp/build$ sudo nano /boot/config.txt
                osmc@osmc:~/rpi-fbcp/build$ make
                [100%] Building C object CMakeFiles/fbcp.dir/main.c.o
                /home/osmc/rpi-fbcp/main.c:8:22: fatal error: bcm_host.h: No such file or directory
                #include <bcm_host.h>
                ^
                compilation terminated.
                CMakeFiles/fbcp.dir/build.make:54: recipe for target 'CMakeFiles/fbcp.dir/main.c.o' failed
                make[2]: *** [CMakeFiles/fbcp.dir/main.c.o] Error 1
                CMakeFiles/Makefile2:60: recipe for target 'CMakeFiles/fbcp.dir/all' failed
                make[1]: *** [CMakeFiles/fbcp.dir/all] Error 2
                Makefile:76: recipe for target 'all' failed
                make: *** [all] Error 2

                Any ideas what is going wrong?

                1 Reply Last reply Reply Quote 0
                • topic:timeago-later,15 days
                • M
                  millertv79 @senkun
                  last edited by 14 Jan 2017, 04:10

                  @senkun Thanks for your post, it was simple and plain worked. For some reason though, retropie has just suddenly stopped outputting to the screen - I haven't updated anything or changed anything, I did scrape some games. Could that have done it??? I tried to redo all the steps but since I already have everything installed and have already edited the config files as directed, I can't figure out what else to do. Any ideas?

                  For more options and information see

                  http://www.raspberrypi.org/documentation/configuration/config-txt.md

                  Some settings may impact device functionality. See link above for details

                  uncomment if you get no picture on HDMI for a default "safe" mode

                  #hdmi_safe=1

                  uncomment this if your display has a black border of unused pixels visible

                  and your display can output without overscan

                  disable_overscan=1

                  uncomment the following to adjust overscan. Use positive numbers if console

                  goes off screen, and negative if there is too much border

                  #overscan_left=16
                  #overscan_right=16
                  #overscan_top=16
                  #overscan_bottom=16

                  uncomment to force a console size. By default it will be display's size minus

                  overscan.

                  #framebuffer_width=1280
                  #framebuffer_height=720

                  uncomment if hdmi display is not detected and composite is being output

                  #hdmi_force_hotplug=1

                  uncomment to force a specific HDMI mode (this will force VGA)

                  #hdmi_group=1
                  #hdmi_mode=1

                  uncomment to force a HDMI mode rather than DVI. This can make audio work in

                  DMT (computer monitor) modes

                  #hdmi_drive=2

                  uncomment to increase signal to HDMI, if you have interference, blanking, or

                  no display

                  #config_hdmi_boost=4

                  #framebuffer_width=1280
                  #framebuffer_height=720

                  uncomment if hdmi display is not detected and composite is being output

                  #hdmi_force_hotplug=1

                  uncomment to force a specific HDMI mode (this will force VGA)

                  #hdmi_group=1
                  #hdmi_mode=1

                  uncomment to force a HDMI mode rather than DVI. This can make audio work in

                  DMT (computer monitor) modes

                  #hdmi_drive=2

                  uncomment to increase signal to HDMI, if you have interference, blanking, or

                  no display

                  #config_hdmi_boost=4

                  uncomment for composite PAL

                  #sdtv_mode=2

                  #uncomment to overclock the arm. 700 MHz is the default.
                  #arm_freq=800

                  Uncomment some or all of these to enable the optional hardware interfaces

                  #dtparam=i2c_arm=on
                  #dtparam=i2s=on
                  dtparam=spi=on

                  Uncomment this to enable the lirc-rpi module

                  #dtoverlay=lirc-rpi

                  Additional overlays and parameters are documented /boot/overlays/README

                  Enable audio (loads snd_bcm2835)

                  dtparam=audio=on
                  gpu_mem_256=128
                  gpu_mem_512=256

                  uncomment to overclock the arm. 700 MHz is the default.
                  #arm_freq=800

                  Uncomment some or all of these to enable the optional hardware interfaces

                  #dtparam=i2c_arm=on
                  #dtparam=i2s=on
                  dtparam=spi=on

                  Uncomment this to enable the lirc-rpi module

                  #dtoverlay=lirc-rpi

                  Additional overlays and parameters are documented /boot/overlays/README

                  Enable audio (loads snd_bcm2835)

                  dtparam=audio=on
                  gpu_mem_256=128
                  gpu_mem_512=256
                  gpu_mem_1024=256
                  #overscan_scale=1

                  dtparam=spi=on
                  dtoverlay=waveshare32b
                  display_rotate=2


                  pi@retropie:~ $ ls /dev/fb*
                  /dev/fb0 /dev/fb1


                  #!/bin/sh -e

                  rc.local

                  This script is executed at the end of each multiuser runlevel.

                  Make sure that the script will "exit 0" on success or any other

                  value on error.

                  In order to enable or disable this script just change the execution

                  bits.

                  By default this script does nothing.

                  Print the IP address

                  _IP=$(hostname -I) || true
                  if [ "$_IP" ]; then
                  printf "My IP address is %s\n" "$_IP"
                  fi
                  /usr/local/bin/fbcp &
                  exit 0

                  1 Reply Last reply Reply Quote 0
                  • topic:timeago-later,3 months
                  • R
                    ramiscomakimaki @rog585
                    last edited by 10 Apr 2017, 13:06

                    @rog585 what was causing that there white screen of yours? I've followed them there instructions multiple times from fresh installs of the RetroPie and I still be getting that there white screen. If you don't mind throwing me a slice of knowledge, I'd sure appreciate it. Thanks kindly.

                    1 Reply Last reply Reply Quote 0
                    • A
                      AluLagoa @senkun
                      last edited by 16 Apr 2017, 18:38

                      @senkun
                      Hi!
                      Is it possible to get the Waveshare 32b working on a B+?
                      A seller on amazon said it was possible, but he only sends images to costumers.
                      Regards

                      1 Reply Last reply Reply Quote 0
                      • topic:timeago-later,29 days
                      • R
                        RetroManCave
                        last edited by 15 May 2017, 11:18

                        I've made a video of the Waveshare 3.5" running with these settings here:

                        I'll be following this up soon with a 3.2" screen for comparison to see which is most suitable for Retropie.

                        If you find this useful please take a moment to subscribe to my channel for more similar content.

                        S 1 Reply Last reply 13 Jun 2017, 11:42 Reply Quote 0
                        • topic:timeago-later,29 days
                        • S
                          Shakz @RetroManCave
                          last edited by 13 Jun 2017, 11:42

                          @RetroManCave
                          Just watched your vid and subbed. What are your video settings? Mine still looks terrible. I have the 3.2in screen.

                          RetroPie tips, tricks, and tweaks: https://www.youtube.com/eazyhax

                          1 Reply Last reply Reply Quote 0
                          • topic:timeago-later,2 months
                          • W
                            wenamba
                            last edited by wenamba 8 Oct 2017, 09:39 10 Aug 2017, 08:00

                            I just used the guide to setup my waveshare32b display and it worked like a charm! Thanks again for the guide. After the initial happiness, I also saw some flaws which I corrected. Perhaps others can benefit from them.

                            After getting the display to work there were borders around the screen and there was lagging between input and the screen. Borders are killing on a small screen like this, and can easily be fixed by setting extra parameters in the /boot/config.txt.

                            So this is what I added to the end of the file:

                            hdmi_force_hotplug=1
                            hdmi_cvt=320 240 20 1 0 0 0
                            hdmi_group=2
                            hdmi_mode=87
                            

                            The hdmi_cvt parameter can be edited if you have another display. Values stand for:

                            hdmi_cvt=<width> <height> <framerate> <aspect> <margins> <interlace> <rb>
                            width width in pixels
                            height height in pixels
                            framerate framerate in Hz
                            aspect aspect ratio 1=4:3, 2=14:9, 3=16:9, 4=5:4, 5=16:10, 6=15:9
                            margins 0=margins disabled, 1=margins enabled
                            interlace 0=progressive, 1=interlaced
                            rb 0=normal, 1=reduced blanking

                            The lag in the screen was because of the SPI speed, which by default is not very high. You can manually set it to an higher rate in the same /boot/config.txt.

                            Normally you would write this line: dtoverlay=waveshare32b
                            To add SPI speed, just add parameters to the end of this line. This would lead to the following completed line:
                            dtoverlay=waveshare32b,speed=42000000,fps=20

                            Setting the speed to 42000000 is the advised maximum speed, but I've seen people using 60000000. If you use an extender-cable or something like this, perhaps you have to lower this to 16000000 to make it stable. This will influence the speed of the screen and I advise to not use cables between your screen and the raspberry PI for optimal results.

                            The FPS of 20 is the same as what I set in the hdmi_cvt parameter. This is important to keep the same value.

                            Happy gaming.

                            T F C 3 Replies Last reply 15 Aug 2017, 06:35 Reply Quote 0
                            • T
                              tonaytan @wenamba
                              last edited by tonaytan 15 Aug 2017, 06:35

                              so I have a problem with your guide, I want to install tactile switch buttons but guide your disables retrogame from adafruit is there a solution to that?

                              1 Reply Last reply Reply Quote 0
                              • topic:timeago-later,2 months
                              • F
                                flashmaster @wenamba
                                last edited by 24 Oct 2017, 15:02

                                @wenamba what version of retropie do you use ? i have tried this set up on both 4.1 and 4.3 and with no joy just an expensive white touch for my raspberry pi

                                i have tried all above for 2 days now and not getting anywhere

                                ls /dev/fb* sometimes i will get /dev/fb1 or /dev/fb0 but nothing on my screen.

                                i have tried installing the driver that came with the cd into the pi root with winscp and still no joy.

                                i have tried installing just the normal setup that comes on the cd to test the screen and it works fine., just finding now impossible to get it working with retropie will try another week and if no joy will sell the screen on ebay to some fool

                                T 1 Reply Last reply 29 Mar 2018, 17:12 Reply Quote 0
                                • topic:timeago-later,2 months
                                • N
                                  nitesuh @senkun
                                  last edited by 13 Dec 2017, 07:26

                                  @senkun i bought the waveshare 4 inch hdmi display, and the above method isn't working with it.
                                  please help me out!

                                  1 Reply Last reply Reply Quote 0
                                  • topic:timeago-later,about a month
                                  • A
                                    andydubitsky
                                    last edited by 24 Jan 2018, 22:53

                                    3.5 still works!!!!!! great job!!!!!!

                                    1 Reply Last reply Reply Quote 0
                                    • topic:timeago-later,2 months
                                    • T
                                      tonaytan @flashmaster
                                      last edited by 29 Mar 2018, 17:12

                                      @flashmaster hey flashmaster i solved it you need to go on https://github.com/mholgatem/GPIOnext follow his instruction install it and when you install it go to bash gpionext then configure and then choose keyboard just select random buttons and go back in with you retropie and go to configure and voila it will be recognised if you need further informations just reply

                                      T 1 Reply Last reply 31 Mar 2018, 00:10 Reply Quote 0
                                      • T
                                        tonaytan @tonaytan
                                        last edited by 31 Mar 2018, 00:10

                                        @tonaytan so guys I made a guide maybe someone wants to look into that because GPIOnext needs some commands that need to be added https://retropie.org.uk/forum/topic/12176/pigrrl-button-installation-need-advise

                                        L 1 Reply Last reply 1 Apr 2018, 21:58 Reply Quote 0
                                        • L
                                          lixife @tonaytan
                                          last edited by 1 Apr 2018, 21:58

                                          @tonaytan hi tonaytan Can you share your image file? I tried to set a week but only got a black screen

                                          T 1 Reply Last reply 2 Apr 2018, 16:46 Reply Quote 0
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