Waveshare Spotspear 3.5" Touch Screen Working with Rune

rlsten

I was able to get a Waveshare Spotpear 3.5" resistive touch screen working with Rune Audio (RuneAudio_rpi2_rp3_0.4-beta_20160321_2GB.img) on a Raspberry Pi 3.

: s-l500.jpg (67.36 KiB) Viewed 23772 times

Responsiveness is a bit erratic; a stylus is pretty much mandatory. Scrolling can be a challenge.

I also used this method for a no brand screen I got from ebay, although the screen was rotated 180 degrees.

: s-l500.jpg (67.36 KiB) Viewed 23772 times

I got the screen to work by basically burning the Waveshare Raspbian Jessie Ready to Use image https://drive.google.com/open?id=0B8Xjwnqc7XAMNHdKdGJ6bkpxZHc, and then noting the changes to the relevant files that were specific to the Waveshare screen. It results in basically the same configuration as using the driver installation method detailed on the Waveshare Wiki http://www.waveshare.com/wiki/3.5inch_RPi_LCD_(A)#Software. I didn't use that method because I didn't want the Rune Audio config.txt and cmdline.txt files overwritten during the Waveshare driver installation.

Here is a step by step guide (of course, I can't guarantee that this will work for everybody; I've used it several times):

1. Install the "xf86-video-fbturbo" package

pacman -S xf86-video-fbturbo

2. Copy the waveshare driver (waveshare35a-overlay.dtb) to /boot/overlays. The driver can be found on the CD that comes with the screen, or it can be obtained as part of the driver package on the Waveshare Wiki. http://www.waveshare.com/w/upload/2/24/LCD-show-160520.tar.gz

3. Add the following to /boot/config.txt:

start_x=1
gpu_mem=128
core_freq=250
sdram_freq=400
over_voltage=0
dtparam=spi=on
dtoverlay=waveshare35a
dtoverlay=ads7846,cs=1,penirq=17,penirq_pull=2,speed=1000000,keep_vref_on=1,swapxy=1,pmax=255,xohms=60,xmin=200,xmax=3900,ymin=200,ymax=3900
dtparam=i2c_arm=on
dtoverlay=w1-gpio-pullup,gpiopin=4,extpullup=1

4. Add the following at the end of /boot/cmdline.txt:

fbcon=map:10 fbcon=font:ProFont6x11 logo.nologo

5. Create the file /etc/X11/xorg.conf.d/99-calibration.conf and insert the following:

Section "InputClass"
        Identifier      "calibration"
        MatchProduct    "ADS7846 Touchscreen"
        Option  "Calibration"   "3932 300 294 3801"
        Option  "SwapAxes"      "1"
EndSection

6. In /etc/X11/xorg.conf.d/99-fbturbo.conf, change

 Option          "fbdev" "/dev/fb0"

 Option          "fbdev" "/dev/fb1"

7. Add the following to /etc/modules-load.d/raspberrypi.conf:

i2c-bcm2708
i2c-dev
flexfb  width=320  height=480  regwidth=16 init=-1,0xb0,0x0,-1,0x11,-2,250,-1,0x3A,0x55,-1,0xC2,0x44,-1,0xC5,0x00,0x00,0x00,0x00,-1,0xE0,0x0F,0x1F,0x1C,0x0C,0x0F,0x08,0x48,0x98,0x37,0x0A,0x13,0x04,0x11,0x0D,0x00,-1,0xE1,0x0F,0x32,0x2E,0x0B,0x0D,0x05,0x47,0x75,0x37,0x06,0x10,0x03,0x24,0x20,0x00,-1,0xE2,0x0F,0x32,0x2E,0x0B,0x0D,0x05,0x47,0x75,0x37,0x06,0x10,0x03,0x24,0x20,0x00,-1,0x36,0x28,-1,0x11,-1,0x29,-3 
fbtft_device debug=3 rotate=90 name=flexfb speed=16000000 gpios=reset:25,dc:24 
ads7846_device model=7846 cs=1 gpio_pendown=17  keep_vref_on=1 swap_xy=1 pressure_max=255 x_plate_ohms=60 x_min=200 x_max=3900 y_min=200 y_max=3900

Note: The last 3 lines re: flexfb; fbtft; and ads7846_device were commented out on the Waveshare Raspberry Jessie Ready to Use image; however, they were not commented out on the Driver Installation package from the Waveshare Wiki.

8. Reboot

If you want to rotate the screen, then in /boot/config.txt change

dtoverlay=waveshare35a-overlay.dtb

dtoverlay=waveshare35a-overlay.dtb,rotate=270

If you rotate the screen, or if the calibration is off, you will have to calibrate the screen. I used the method from this excellent post:
#2868213

Cheers,
Rod

zzeromin

Hi. rlsten

Thanks for great tutorial.
I've successfully done setup 3.5" TFT LCD on RPi 3B.

You are the best.
Thanks a lot.

zzeromin

radu022003

Hello, I also want to use RuneAudio with this LCD and RPi1 (later with RPi0). Until now I managed to make the LCD work, meaning I can see messages on LCD and console.

I followed some tutorials about how to install X on arch linux but when i run startx command is starting and immediately stopping without relevant error (at least for me).

Can you please provide some details about how to get to the RuneAudio interface on 3.5" LCD Touchscreen?

Thanks in advance.

hondagx35

Hi radu022003,

this feature (Local Browser) is only available on the new RP2/3 and ODROID C2 images.

Installing and running x on the RP1 or Zero is too much for the little device (just my 2 cents).
What i have done for the above mentioned devices is:
- install midori (webbrowser)
- install matchbox-window-manager (needed for running the browser on the frame buffer)
- start xinit on boot and display midori pointing to http://localhost

The next RP1 image will run also on RP0 and will include the Local Browser.

Frank

radu022003

installing midori seems to be impossible, at least not without efforts.

[root@runeaudio lib]# pacman -S midori
resolving dependencies...
looking for inter-conflicts...
:: libgudev and libsystemd are in conflict. Remove libsystemd? [y/N]

is this a problem only for RPi1?

hondagx35

is this a problem only for RPi1?

Not only for the Pi1, but for all older images.
It needs much more effort to get the local browser running.
The whole image has to be made new (all packages have to be updated).

Frank

radu022003

So what is your advice? Worth continuing on this path? Or should I change to raspberry pi 3?

hondagx35

Hi radu022003,

So what is your advice?

Worth continuing on this path?

I don't think that it is possible for you to update all packages.
I'm short in time at the moment, so a new image for RP1 has to wait.

Or should I change to raspberry pi 3?

This would be the easiest solution. A RP 2 will also do the job.

Frank

runemine120

Running into some issue with my project for this, did each step but still no luck. Anyway you could post pictures for each step to see exactly what i screwed up or heck even better a new iso file with the steps done already.

tyman

(first timer with pi2 programming, so please excuse me..)

I tested the above instructions posted and it worked like magic, and I am so so happy.

But somehow my display is in portrait mode, but yours is in landscape mode. Did you change anything on the code?

- waveshare 3.5" LCD with resisitive touch
- RPi2

I tried changing the rotate command in /boot/config.txt
where i inserted 90, 180, 270 for xx but it did not work for me.

dtoverlay=waveshare35a,rotate=xx

i also tried changing the following in /boot/config.txt

# LCD settings
# 180 degrees
lcd_rotate=2
# Normal
#lcd_rotate=0

i reboot after every change to the config.txt file. Any pointers will be appreciated

zzeromin wroteHi. rlsten

Thanks for great tutorial.
I've successfully done setup 3.5" TFT LCD on RPi 3B.

You are the best.
Thanks a lot.

zzeromin

hondagx35

Hi tyman,

have you tried to change this:

    i2c-bcm2708
    i2c-dev
    flexfb  width=320  height=480  regwidth=16 init=-1,0xb0,0x0,-1,0x11,-2,250,-1,0x3A,0x55,-1,0xC2,0x44,-1,0xC5,0x00,0x00,0x00,0x00,-1,0xE0,0x0F,0x1F,0x1C,0x0C,0x0F,0x08,0x48,0x98,0x37,0x0A,0x13,0x04,0x11,0x0D,0x00,-1,0xE1,0x0F,0x32,0x2E,0x0B,0x0D,0x05,0x47,0x75,0x37,0x06,0x10,0x03,0x24,0x20,0x00,-1,0xE2,0x0F,0x32,0x2E,0x0B,0x0D,0x05,0x47,0x75,0x37,0x06,0x10,0x03,0x24,0x20,0x00,-1,0x36,0x28,-1,0x11,-1,0x29,-3
    fbtft_device debug=3 rotate=90 name=flexfb speed=16000000 gpios=reset:25,dc:24
    ads7846_device model=7846 cs=1 gpio_pendown=17  keep_vref_on=1 swap_xy=1 pressure_max=255 x_plate_ohms=60 x_min=200 x_max=3900 y_min=200 y_max=3900

fbtft_device debug=3 rotate=90 name=flexfb speed=16000000

Frank

rlsten

Hi tyman,

I found that the default orientation of the waveshare screen was in landscape mode, i.e., 90. I changed to 270 to flip the screen 180 degrees.

My tutorial was vague in Step 7 about including the lines in /etc/modules-load.d/raspberrypi.conf that Frank mentioned; make sure you include them with either rotate=90 or 270. Also, you might try this in /boot/config.txt:

dtoverlay=waveshare35a-overlay.dtb,rotate=270

Hope this helps,
Rod

tyman

thank you for the response..

Apologies, maybe I am not describing my problem properly. The LCD can be rotated with changing "rotate= " in /boot/config.txt

But I will like it to be displayed in "landscape" mode as picture below but it is displaying in "portrait" mode regardless. In our web-browser, we can change the "display mode" by changing the window size.

What I meant by "portrait" mode

What I meant by "landscape" mode

rlsten

Hi tyman,

I think the problem has to do with either the zoom level or the size of the fonts. Rune has been optimized for the Official Raspberry Pi 7" screen. As described in this post #286835, you might try commenting out this line in /root/.config/midori/config

#user-stylesheet-uri=file:///root/.local/share/midori/styles/local-styles.css

Rod

hondagx35

Hi tyman,

or adapting the zoomfactor in the file Rod mentioned:

zoom-level=0.77567797899246216

Frank

johnbanks

Frank ...
Gosh - you are precise

Sincere thanks for all you do on the Forum which I'm sure many other users appreciate.
And I hope your efforts are recognized at 'HQ'.
Thanks again

hondagx35

johnbanks wroteAnd I hope your efforts are recognized at 'HQ'.

If you mean what i think, then no.

Frank

tyman

Frank and Rod,

Thanks. I will try it out this weekend and report back.

nmbb

Very nice, tomorrow I will have a display like that to test, let's see if it will work fine. Nice acrylic box, custom made or it can be bought on any seller?

luamiennam

I use Pi3 + Runeaudio. I want show info songs in LCD 3.5" waveshare.
I try run code "pacman -S xf86-video-fbturbo" but I just get the following error as file attach.
How I would fix the error?
Thanks.
P/s: sorry, my english is not good.

Attachments

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