MSP430G2 launchpad

Very similar to SPI, though there is no MISO.

Only 3 pins are needed to input data into the device. The rising edge of SCLK signal
shifts the data from the SIN pin to the internal register. After all data is clocked in, a high-level pulse of XLAT
signal latches the serial data to the internal registers. The length of serial data is 96 bit or 192 bit.

"... As there is not much information about TLC5940nt . .."
Did you read the data-sheet? www.ti.com/.../tlc5940.pdf

Tony Philipsson Thanks a lot. As I am a beginner that information was very useful. And I dont have the TI breakout board. can i connect an LED display screen to the output directly.?Is there any resistors and capacitors to be used ?


old_cow_yellow Thank you for the information.

I did interface the MSP430g2 launchpad with TLC5940nt.

I am working with HC SR04(ultrasonic sensor).,MSP430G2553 and TLC5940nt. I want to display a message using TLC5940nt when the HC SR04 detects an object.

P2.1 to VCC

P2.2to GND

P2.4 to trigger

P2.1 to echo



For TLC5940nt,

P1.0 to XLAT

P1.1 to BLANK

P1.3 to DCPRG

P1.4 to GSCLK

P1.5 to SCLK

P1.6 to SOUT

P1.7 to SIN

P2.6 to XERR

P2.7 to VPRG



please help me out with the connections and also with energia code..Thank you in advance.



Regards,

Vamsi Krishna.R

We can not hold your hand thru the hole product design.
1: Is this a school project, when we will only teach you how to think and we will not give complete solutions.
2: Is this a commercial product, when allow a budget to hire someone that can do it for you.
3: Is this a hobby, when start with something simple: a 74AHC595 connected to 8 LEDs

As i dint have proper guidance and also new to this area, I had to post in the forum.I needed someone to verify my connections.

As you should avoid bit-banging the serial data, but use the msp430 UCB0 SPI
The pins should be used this way, the others are general GPIO

P1.7 SIMO (MOSI = master out>slave in: a msp output)
P1.6 SOMI (MISO = a msp input)
P1.5 CLK (a msp output)

Edge and phase have to be set correctly too, TI is pretty much the opposite of Motorola SPI.
Probably a patent issue and is silly if you ask me.

Thanks a ton.