Re: Connecting BBB to a 5" Capacitive Touch TFT Screen?

[Brent]

It would take quite a bit of time to go through the pinout and what needs to be connected, but I would recommend looking at the LCD7 cape regarding the RGB interface.  If I remember correctly it uses a 50-pin connector, but you should be able to match it up.  For the touch screen, you will need to find out what touch screen controller they are using as you will need to configure kernel to use their driver.  Does Newhaven make their own touch panels, or do they buy them from someone else and attach it?

On Friday, May 31, 2013 5:18:31 PM UTC-4, Eric Youngberg wrote:

I would Like to Connect this Capacitive Touch TFT Screen from Newhaven Display to a BBB, I just got. It is the: NHD-5.0-800480TF-ATXL#-CTP, It has 3.3Vdd, 24-bit RGB interface, High Brightness White LED backlight, Capacitive Touch Panel with I2C controller built in. What would the pin out I could use from the expansion header to interface this to the BBB? Here's the screen's pinouts:

TFT: 

Pin No. Symbol External Connection Function Description 

1 LED- LED Power Supply Ground for Backlight 

2 LED+ LED Power Supply Backlight Power Supply (60mA @ ~19.2V) 

3 GND Power Supply Ground 

4 VDD Power Supply Power supply for LCD and logic (3.3V) 

5-12 [R0-R7] MPU Red Data Signals 

13-20 [G0-G7] MPU Green Data Signals

21-28 [B0-B7] MPU Blue Data Signals

29 GND Power Supply Ground

30 CLKIN MPU Clock for input data (Rising Edge) 

31 STBYB MPU 1: Normal Operation; 0: Standby Mode 

32 HSYNC MPU Line synchronization signal 

33 VSYNC MPU Frame synchronization signal 

34 DE MPU Data Enable signal 

35 NC - No Connect 

36 GND Power Supply Ground 

37 XR - No Connect 

38 YD - No Connect 

39 XL - No Connect 

40 YU - No Connect 

Recommended LCD connector: 0.5mm pitch 40-Conductor FFC. Molex p/n: 54104-4031 (top contact) 

Backlight connector: on LCD connector Mates with: --- 

Capacitive Touch Panel: 

Pin No. Symbol External 

Connection 

Function Description 

1 VCC Power Supply Power supply for logic (3.0V) 

2 GND Power Supply Ground 

3 SCL MPU Serial I2C Clock (Requires pull-up resistor) 

4 SDA MPU Serial I2C Data (Requires pull-up resistor) 

5 /INT MPU Interrupt signal from touch panel module to host 

6 /WAKE MPU External interrupt signal from host (0: Disable /INT 1: Enable /INT)

Any help would be appreciated. Thanks

[nima talebpour]

i have the same problem :(

[sal...@hello-lighting.com]

hi 

I'm not work on BBB but just took a look at their website. it seems BBB can not support RGB interface directly. even I saw the RGB interface on BBB's schematic in page11

https://github.com/beagleboard/beaglebone-black/blob/master/BBB_SCH.pdf

 you can use a RGB-MCU convert IC such as SSD1963,

you can find the SSD1963 driver code here:

https://github.com/notro/fbtft/wiki/LCD-Modules

I'm working hello-lighting.com, as a LCD/TFT engineer, any question about LCD you can write to me. 

best regards! 

在 2013年6月1日星期六 UTC+8上午10:38:48，Brent写道：