Newhaven Display Forum

Hi Adithya,

I don't recall if SSH is enabled by default, manual updates may be required when using the 14.0x Ubuntu kernels. It's been a couple years since I've developed with that OS... The boot process may give you some additional information. To see the actual boot process a RS232 cable like the TTL-232R-3V3 from FTDI is needed. Just plug it into the J1 connector (located on the BBB) and open a serial terminal of your choice.

For support of the BBB and various distributions, it might be more helpful to reach out via their support fourm.

https://beagleboard.org/discuss

On a side note, I would recommend switching over to the 9.x debian kernel (stock operating system). This is the latest version and updates are continually pushed through.

The BB-BONE-NH7C-01-A0.dts overlay is available for download here:

https://github.com/beagleboard/bb.org-overlays/blob/master/src/arm/BB-BONE-NH7C-01-A0.dts

Please note that it was recently added to the default BeagleBoard Debian Image by Robert Nelson.

Hi Adithya,

The default user is Ubuntu , and the password is temppwd .

Once you're logged in as the ubuntu user, it is highly advisable to use the passwd command to change the default password to improve your BeagleBone's security.

Hi Jerry,

I’m sorry to hear about the trouble you are having with the NHD-7.0CTP-CAPE, it appears to be a software issue.

The following thread should provide a solution:
https://github.com/beagleboard/bb.org-overlays/issues/76

Unfortunately, I don't have the BBBW (wireless) in the lab at this time... I'll try and get my hands on another one early next week so I can confirm 

Hi v8dave!

Interesting video - It looks like your timing is off   

Can you please try the following:

/* NHD-7.0-800480EF-ATXL# */
panel {
status = "okay";
compatible = "ti,tilcdc,panel";
pinctrl-names = "default";
pinctrl-0 = <&bb_lcd_lcd_pins>;
panel-info {
ac-bias           = <255>;
ac-bias-intrpt    = <0>;
dma-burst-sz      = <16>;
bpp               = <32>;
fdd               = <0x80>;
tft-alt-mode      = <0>;
stn-565-mode      = <0>;
mono-8bit-mode    = <0>;
sync-edge         = <0>;
sync-ctrl         = <0>;
raster-order      = <0>;
fifo-th           = <0>;
};
display-timings {
native-mode = <&timing0>;
timing0: 800x480 {
clock-frequency = <45000000>;
hactive = <800>;
vactive = <480>;
hfront-porch = <40>;
hback-porch = <40>;
hsync-len = <48>;
vback-porch = <29>;
vfront-porch = <13>;
vsync-len = <3>;
hsync-active = <0>;
vsync-active = <0>;

https://github.com/beagleboard/bb.org-overlays/blob/master/src/arm/BB-BONE-NH7C-01-A0.dts


Note: The 5.0" should have the same timing, however the pixelclk is inverted 

Glad to hear you got your display up and running!

Thanks for sharing your solution, it will definitely help others 

Hi,

The AR1100 (Resistive Touch Screen Controller IC) shows up like a USB mouse, it works on all operating systems as the computer doesn't know it's a touch screen, it just thinks its a mouse. You can adjust the AR100 to consider itself a Touch Digitizer, supported by many but not all computers.

If you have a Raspberry Pi available you may re-calibrate the touch IC via USB using the following program:

https://github.com/tom-2015/rpi-AR1100

or

If you have a Windows computer you may re-calibrate the touch IC via USB using the following program:

http://www.microchip.com/wwwproducts/en/AR1100#documentation


Hope this helps,

Hi warriorofwire!

I’m sorry to hear about the trouble you are having with storing / displaying Paletted8 bitmaps.

FTDI has an application note for image file conversion (see page 14):

http://www.ftdichip.com/Support/Documents/AppNotes/AN_303%20FT800%20Image%20File%20Conversion.pdf

//The following code shows a PALETTED8 example for the FT81x. PALETTED8 format is supported
//indirectly in the FT81x and it is different from the PALETTED format in the FT80x. To render
//Alpha, Red, Green and Blue channels, multi-pass drawing action is required.

//addr_pal is the starting address of palette lookup table in RAM_G
//bitmap source(palette indices) is starting from address 0

dl(BITMAP_HANDLE(0))
dl(BITMAP_LAYOUT(PALETTED8, width, height))
dl(BITMAP_SIZE(NEAREST, BORDER, BORDER, width, height))

dl(BITMAP_SOURCE(0)) //bitmap source(palette indices)

dl(BEGIN(BITMAPS))
dl(BLEND_FUNC(ONE, ZERO))

//Draw Alpha channel
dl(COLOR_MASK(0,0,0,1))
dl(PALETTE_SOURCE(addr_pal+3))
dl(VERTEX2II(0, 0, 0, 0))

//Draw Red channel
dl(BLEND_FUNC(DST_ALPHA, ONE_MINUS_DST_ALPHA))
dl(COLOR_MASK(1,0,0,0))
dl(PALETTE_SOURCE (addr_pal+2))
dl(VERTEX2II (0, 0, 0, 0))

//Draw Green channel
dl(COLOR_MASK(0,1,0,0))
dl(PALETTE_SOURCE(addr_pal + 1))
dl(VERTEX2II(0, 0, 0, 0))

//Draw Blue channel
dl(COLOR_MASK(0,0,1,0))
dl(PALETTE_SOURCE(addr_pal)

Regarding the palette / index scheme of FTDI's image converter tool it may be beneficial to seek support from their support team directly.

http://www.ftdichip.com/FTContact.htm.

Hope this helps!

Hi Joachim! Welcome to the Forum 

Brilliant, thank you for sharing your code it will definitely help others.

Very thorough write up!

Best Regards,

Paul B.