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kingpinzs

How do I hook up a LCD to the launchpad?

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HD44780 based devices are popular, these are your standard 1 or 2 line text displays.

They can be driven with 4 lines.

http://www.repairfaq.org/filipg/LINK/F_LCD_HD44780.html

http://www.sparkfun.com/commerce/produc ... cts_id=255

 

You can also buy these fitted with a serial port (RS232 TTL), which means you can drive it with a UART.

http://www.sparkfun.com/commerce/produc ... ts_id=9066

 

The KS0108 is a commonly used graphical LCD. Take a look at the Arduino library and docs for more info:

http://www.arduino.cc/playground/Code/GLCDks0108

 

There are also serially controlled graphical devices:

http://www.sparkfun.com/commerce/produc ... ts_id=9351

 

 

It's a tradeoff - serial devices with onboard driver boards cost more but are easier to use.

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I've almost got 16x2 and 20x4 character LCDs working with mine. both are HD44870 (parallel) units, so I am using a 74HC595 (serial-parallel shift register) to drive the LCD using 3 pins. Yes, you can (and I do) write in 4-bit mode, but it actually takes at least 6 pins.

 

I'm just having some trouble with the cursor positioning commands, then I'll be done. Unfortunately, on pain meds for a tooth extraction :cry: ; makes it hard to brain, gives me the dumb.

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