4 replies to this topic

[alesbedac]

Hi all,

i am testing LCD ST7735B, but i dont know how to wire it...picture is atached

all thanks to any help

 

Attached Files

•  LCD ST7735B.png   315.29KB   3 downloads

[NooM]

easy.

gnd vcc, ok i guess you know that.

nc = no connection.

reset also clear.

a0 is data/command switch.

sda is mosi.

sck is sck

cs is chipselect (thats all for the display itself, spi)

 

the other sck,mosi miso and cs is for the sd card.

[alesbedac]

The AO and SDA was confusing for me, but its not still working,

i used for testing example from here : http://fabienroyer.w...ith-a-netduino/

 

I will check it tomorrow again....and i will place here my source code

[alesbedac]

| am using code from here :

http://netduinohelpe...aFruitST7735.cs

 

but its not working, program is crashing

in class : ExtendedSpiConfiguration

method name : public ExtendedSpiConfiguration(.....

command : fieldInfo.SetValue(this, BitsPerTransfer);

 

program code is atached

 

Can anybody help me please

Attached Files

•  AdaFruitST7735.cs   17.19KB   5 downloads
•  ExtendedSpiConfiguration.cs   4.48KB   8 downloads
•  Program.cs   1.08KB   4 downloads
•  VirtualMemory.cs   3.73KB   4 downloads

[Mario Vernari]

Hello.

If the Fabien's trick in the ExtendedSpiConfiguration is not available on Netduino 2, because the ST MCU does not allow the same flexibility as the Atmel's on the Netduino (1).

 

I think you have two choices, none of them are easy, though.

The first one is taking an "Arduino"-like board (or a simple chip), and program it as "proxy" between the Netduino and the LCD module.

 

The second one requires no extra hardware than the Netduino 2 board and the LCD, but it's a software/hardware hack around the limitation of the ST MCU.

I wrote some post about it, when I wanted to drive a led matrix module. Since the problem was probably similar to this one, I suggest you to have a look:

http://tinyclr.it/su...r-netduino.aspx

http://tinyclr.it/a-...r-netduino.aspx

http://tinyclr.it/a-...ino-plus-2.aspx

 

Here are the sources:

http://cetdevelop.codeplex.com/

 

Good luck!