Jump to content
RobG

(Universal) Color LCD graphics library

Recommended Posts

Hi, i am new to SPI communication, i bought a TFT screen with ST7735 like this one:

 

http://majek.mamy.to/wp-content/uploads/2014/06/red-st7735-back.jpg

http://majek.mamy.to/wp-content/uploads/2014/06/red-st7735-front.jpg

 

Can you tell me which pins to connect to TI Launchpad with MSP430G2553, and which version to use?

Tried latest one but screen shows nothing, even if there are no error in CCS, Don't know what went wrong :(

1.8-ST7735B-4IO-2.jpg

Share this post


Link to post
Share on other sites

SCK - P1.5

SDA - P1.7

DC - P1.4

CS - P1.0

RESET - you can connect to any pin and reset in software, connect to R/C (47k/0.1uF,) or use LP's RESET (but you will not be able to see anything when debugging.) In worst case scenario, you can try connecting it to Vcc.

 

Looks like this board has an LDO, is J1 for 3.3V operation? If yes, short it.

Share this post


Link to post
Share on other sites

Rob,

 

wondering if you can help - and I will try to PM you with some non public details as well.

 

we are close to releasing a new production version of a particular msp430 design, and as part of the change in features, we are using a new ST7735S display as supplied by Seeed.

 

Supposedly the screen is a ST7735S based display, with screen design JYT144003-T01. Unfortunately when we received the manufactured assembly from Seeed, it turns out the flex connector for the screen is reversed from the spec. That's ok for now, have been able to reconnect it backwards, and using the library you developed I can at least program the chip, and the screen does initialize the backlight. But cannot see anything after that in terms of graphics. There is a risk given the backwards pin definition that there is something else amiss with this screen.

 

So, questions:

 

Is there a particular version of your library we should try for the ST7735S?

DO you think we should be able to get this working, or cut our losses and start afresh with another screen? Starting again will probably result in a 6 week delay, which will not be popular with industrial customers I have waiting.

 

thanks in advance, I will try to send that PM with additional info.

 

Paul James

Water ReNu LLC; Just Water Savers USA Inc.

Share this post


Link to post
Share on other sites

Hi, i am new to SPI communication, i bought a TFT screen with ST7735 like this one:

 

http://majek.mamy.to/wp-content/uploads/2014/06/red-st7735-back.jpg

http://majek.mamy.to/wp-content/uploads/2014/06/red-st7735-front.jpg

 

Can you tell me which pins to connect to TI Launchpad with MSP430G2553, and which version to use?

Tried latest one but screen shows nothing, even if there are no error in CCS, Don't know what went wrong :(

 

 

I ordered the same display from Aliexpress. Looked promising. I've tried the version of the library that's for the ST7735R (in the first post), but I'm only getting garbage on the screen. (On another display which claims to be ST7735R I've got RobG's library working perfectly)., 

 

Is A0 and DC the same? I'm assuming that. 

 

Lars

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


×
×
  • Create New...