6 years, 10 months ago.

How to integrate LCD screen with ARM processor?

I want to Connect Display and Keypad external devices with processor board.....Which model is suitable for me.....Also include the comment for that device....

3 Answers

6 years, 10 months ago.

This question is kind of vague: there are a lot of choices, here. For screens, alone, I'd recommend a look, here: https://www.sparkfun.com/categories/76?page=all. One thing in particular to watch for, though, is the pin count on the LCD. If you get a non-serial model, it can take almost 10 pins, or more if you get a multi-color background model. You can convert from a parallel interface to a serial interface and cut down on the pin count using a "backpack" board, like this one: https://www.sparkfun.com/products/258.

I don't have experience with keypads, but the process will be similar: find a model you like and can afford, and then figure out how to get the mbed to talk to it. You can search the mbed handbook and cookbooks for references to both keypads and screens.

Accepted Answer
6 years, 10 months ago.

You'll also want to take a look at the Components - Displays on the mbed site. You will see quite a range of displays and the interfaces required for those displays. It minimizing pin count, the RA8875-based display has a 4-wire SPI interface and the display module also supports the capability for a keypad using the same interface. [The current version of the library does not have native support for a keypad, but it should be easy to derive one]

6 years, 10 months ago.

For the Nucleo with Arduino compatible pinout I have found for myself the Adafruit Touch TFT Version 2 with SPI interface. It has also a touch controller with SPI interface. So you need 3 Pin SPI and 3 Pin CS - TFT, Touch, SD-Card.