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hi experts,
i follow this this guideline(PiScreen Driver installation instruction) to setup my LCD, the IMG i use is 2015-05-05-raspbian-wheezy.
when i type this command(fbi -noverbose -T 1 -a -d /dev/fb1 image-test.gif), there is nothing on LCD screen.
root@raspberrypi:~# fbi -noverbose -T 1 -a -d /dev/fb1 image-test.gifusing "DejaVu Sans Mono-16", pixelsize=16.67 file=/usr/share/fonts/truetype/ttf-dejavu/DejaVuSansMono.ttf
below is dmesg log:
[ 2.765178] hub 1-1:1.0: USB hub found[ 2.771603] hub 1-1:1.0: 5 ports detected
[ 2.829793] random: nonblocking pool is initialized
[ 3.056546] usb 1-1.1: new high-speed USB device number 3 using dwc_otg
[ 3.166356] usb 1-1.1: New USB device found, idVendor=0424, idProduct=ec00
[ 3.175283] usb 1-1.1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[ 3.206074] smsc95xx v1.0.4
[ 3.273796] smsc95xx 1-1.1:1.0 eth0: register 'smsc95xx' at usb-bcm2708_usb-1.1, smsc95xx USB 2.0 Ethernet, b8:27:eb:ff:a5:66
[ 4.337900] udevd[159]: starting version 175
[ 6.029170] bcm2708_spi 20204000.spi: master is unqueued, this is deprecated
[ 6.144219] ads7846 spi0.1: touchscreen, irq 411
[ 6.360601] input: ADS7846 Touchscreen as /devices/soc/20204000.spi/spi_master/spi0/spi0.1/input/input0
[ 6.760952] fbtft: module is from the staging directory, the quality is unknown, you have been warned.
[ 6.793364] fb_ili9486: module is from the staging directory, the quality is unknown, you have been warned.
[ 6.846771] fbtft_of_value: regwidth = 16
[ 6.852964] fbtft_of_value: buswidth = 8
[ 7.125776] fbtft_of_value: debug = 0
[ 7.131537] fbtft_of_value: rotate = 90
[ 7.361467] fbtft_of_value: fps = 30
[ 8.961334] graphics fb1: fb_ili9486 frame buffer, 480x320, 300 KiB video memory, 4 KiB DMA buffer memory, fps=33, spi0.0 at 8 MHz
[ 8.991101] bcm2708_spi 20204000.spi: SPI Controller at 0x20204000 (irq 80)
[ 13.190494] EXT4-fs (mmcblk0p2): re-mounted. Opts: (null)
[ 14.313171] EXT4-fs (mmcblk0p2): re-mounted. Opts: (null)
[ 28.181418] smsc95xx 1-1.1:1.0 eth0: hardware isn't capable of remote wakeup
[ 29.790342] smsc95xx 1-1.1:1.0 eth0: link up, 100Mbps, full-duplex, lpa 0x45E1
[ 37.783988] cfg80211: Calling CRDA to update world regulatory domain
[ 42.740778] Adding 102396k swap on /var/swap. Priority:-1 extents:2 across:2134012k SSFS
[ 587.265999] fuse init (API version 7.23)
thanks for your help!
BRs,
ShannonPlease comment out this line by placing a '#' in front;
dtparam=spi=onThen reboot
If that fails to work, download the image below. PiScreen should work on first boot.
https://ozzmaker.com/piscreen/PiScreenImage-SDCard-1.8.zipMark --OzzMaker.com --
The driver has been updated to use the functionality of device overlays, more information here;
https://www.raspberrypi.org/documentation/configuration/device-tree.mdIf you would like to use the old method,
Removedtoverlay=piscreen,speed=8000000,rotate=90from /boot/config.txt.
Keepdtparam=spi=onto use the old method
The add the below to /etc/modulesflexfb width=320 height=480 regwidth=16 init=-1,0xb0,0x0,-1,0x11,-2,250,-1,0x3A,0x55,-1,0x36,0x28,-1,0xC2,0x44,-1,0xC5,0x00,0x00,0x0,0x0,-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,-1,0x11,-1,0X29,-3 fbtft_device debug=3 rotate=90 name=flexfb speed=16000000 gpios=reset:25,dc:24,led:22The touchscreen is no longer supported in the old method
Mark --OzzMaker.com --
Mmmm... the above log looks like it loaded. And after step 3 above, steps should get the driver loaded. (A few other things need to be done to get X windows and the console on PiSCreen)
Some questions;
1)Is this the test you did?sudo apt-get install fbi wget https://ozzmaker.com/piscreen/image-test.gif sudo fbi -noverbose -T 1 -a -d /dev/fb1 image-test.gif2)Can you tell if the backlight has come on?
3)Is the screen black or white?
4)can you show me the output ofsudo vcdbg log msgMark --OzzMaker.com --
Everything looks fine in those logs.
You shouldn't ever have a white screen. One list thing... can you please take a photo of the white screen and upload it to the forum.
Mark --OzzMaker.com --
Hi Mark,
Actually, I am not sure that the LCD with white screen, maybe i confuse the LCD backlight with white screen.
Attach file is the running photo, the screen does not change from PI power on.
Thanks.
BRs,
ShannonAttachments:
looks like you have a faulty PiScreen.
Can you send your receipt of purchase to sales@ozzmaker.com
Mark --OzzMaker.com --
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