Launchpad to SparkFun Serial LCD

[lastaid 15]

Is there a port available that uses an i2c interface?

 

i saw the 7 segment i2c driver, when i get my displays [ ordered the a month ago from hk :roll: ] i could give it a try.

especially because msp430 is cheap, the displays cost me 3,40

[gwdeveloper 275]

Has anyone seen this link?

 

http://www.fatihinanc.com/msp430-cesitli/msp430-launchpad-ve-74hc595-lcd/

[RobG 1,892]

Or you could make your life easier and do this:

viewtopic.php?f=9&t=540#p3717

[gwdeveloper 275]

Hey, that works great! It was way easier to dig a little deeper in the old parts bin for a 164 than to decipher that code. It didn't import well at all.

[P!-Ro 4]

I just started a thread for those who would like to interface the msp to an lcd directly. It does use 7 pins though, so for some projects needing more pins I would try out Rob's method to save on I/O.

[oldcyberdude 4]

I trying to use the button count code with a Sparkfun backpack and 4x20 lcd. I use the gcc compiler and got a good compile (changed out the __delay_cycles() ) except for an "invalid use of void"

Here is the code snip

// Update the button press count, and toggle LEDs, when the button is pressed

#ifdef __MSP430__

interrupt (PORT1_VECTOR) PORT_1 (void) {

#else

#pragma vector=PORT1_VECTOR

__interrupt void PORT1_ISR(void) {

#endif

buttonPresses++;

P1OUT ^= BIT0;

P1OUT ^= BIT6;

P1IFG = 0; // clear interrupt

__bic_SR_register_on_exit(LPM4_EXIT);

}

 

I don't see the problem?

BTW, using the #ifdef in the code is really nice for portability.

 

SOLVED - It seems msp430gcc doesn't like LPM4_EXIT some googling showed it should be LPM4_bits - interesting.