driving IR led

Started by Anonymous in MSP43013 years ago 8 replies
LED

Hi all, I've got an IR led connected to the F149 and written a small RC5 driver api for sending ir pulses to a device. Problem is that the...

Hi all, I've got an IR led connected to the F149 and written a small RC5 driver api for sending ir pulses to a device. Problem is that the LED doesn't send it's IR. I've measured with an oscilloscope via a IR sensor (works with the original control) but for some reason my lupse on the led doesn't go to 0Volts. I've got the cathode of the led connected to 3.3V, the anode to a transistor...


Soft-Start to "ON" and Soft-Start to "OFF" - LED

Started by shskurkra in MSP4307 years ago 20 replies
LED

Designing a project based on LED to ON and OFF based on interrupt from momentary switch. Using F2013 kit. I have stuck with soft-start LED ON and...

Designing a project based on LED to ON and OFF based on interrupt from momentary switch. Using F2013 kit. I have stuck with soft-start LED ON and soft-start LED OFF. Can anyone give some ideas. LED switches ON - for interrupt LED is in ON state for 1 min and automatically switches OFF. During 1 minute wait, momentary switch is pressed LED should switch OFF. I have gone through sampleEZ code...


Firmware for MSP430F2013 to support I2C

Started by mast...@limosinfo.com in MSP43010 years ago

I'm currently searching the coder (firmware) who has experience with I2C bus. I am looking for firmware solutions for my prototype that will...

I'm currently searching the coder (firmware) who has experience with I2C bus. I am looking for firmware solutions for my prototype that will be used in manufacturing testing for I2C LED Modules. Each module contains six of TPIC2810 LED Driver chips with Address from 1100000X to 1100101X. All of 8 outputs for each LED Driver are loaded with LED. I need to use LED Display Module for displa...


Control a LED with the MSP430F2012

Started by Scutariu in MSP4304 years ago 6 replies

I have a question. I am new to microcontroller programing but I need to do a simple thing. So I bought a MSP430F2012 in order to light a LED. The...

I have a question. I am new to microcontroller programing but I need to do a simple thing. So I bought a MSP430F2012 in order to light a LED. The only problem is that I want to light the LED after I press a button for 5 seconds. If the button is pressed less then 5 seconds, the LED should not start. So far I managed to get the LED lightening on button press. I do not know how to monitor the input ...


LED Drivers

Started by Raghavendra Bulusu in MSP43013 years ago 6 replies
LED

Are there any Constant Current LED driver that regulates the current through the LED independent of external factors, such as variations in LED...

Are there any Constant Current LED driver that regulates the current through the LED independent of external factors, such as variations in LED Vf, power supply drift, etc that can be interfaced to a microcontroller.I am trying to drive a string of LEDs at 28 v. Thanks, Raghu __________________________________ Do you Yahoo!? Yahoo! Photos: High-quality 4x6 digital prints for 25?


Enabling a pin to light an LED, newbie question

Started by Craig in MSP43011 years ago 5 replies
LED

Hi all, I have one of those newbie questions. I'm just getting into developing with a dev board that I purchased from Spark Fun. I bought...

Hi all, I have one of those newbie questions. I'm just getting into developing with a dev board that I purchased from Spark Fun. I bought the MSP430F149 board which contains an LED and a Push Button. As a first project, I though I would tackle just lighting up the LED. I looked at the schematic and the LED is on pin 6.0. After reading some posts here about setting up pins, I came...


MSP430FE427 Flashing Led and SPI

Started by Tony Myatt in MSP43011 years ago 1 reply

Hi, I am using a MSP430FE427 for doing a power metering project. Im using Code Composer Essentials. Currently I have no external crystal,...

Hi, I am using a MSP430FE427 for doing a power metering project. Im using Code Composer Essentials. Currently I have no external crystal, just the internal one. I wanted to test it for starters using two leds so i wrote delay function using for loops and toggled the two leds on and off. When led 1 is off led 2 is on etc. This was fine in debug mode when in release mode led 1 was on most of


MSP430f1232 ADC10 DTC Problem, Please Help?

Started by Rob Knudson in MSP4309 years ago

Here is my code: void main (void){ int *LED_VOLT; //LED Voltage int *LED_AMP; //LED Current int *LED_INT; ...

Here is my code: void main (void){ int *LED_VOLT; //LED Voltage int *LED_AMP; //LED Current int *LED_INT; //LED Intensity (Photo Diode) int *LED_TEMP; //LED Temperature int *LED_BUS; //BUS line Voltage int *LED_THERM; int temp; // // ADC Action // WDTCTL = WDTPW + WDTHOLD; // Stop WDT...


Driver for 7 segment led display.

Started by sudip_arrow in MSP43011 years ago
LED

PROBLEM - 1 In one of product we are using MSP430F149 as main controller. This product has 4 row 4 digit [ total 16 digits ] 7 segment LED...

PROBLEM - 1 In one of product we are using MSP430F149 as main controller. This product has 4 row 4 digit [ total 16 digits ] 7 segment LED display. The LED displays are common cathode type and we use multiplexed driving. The displays are RED Led type with Vf=1.7V and require 4.5mA each segment. The segments are driven (sourced) using SN74LS245 and the common cathodes of each digi...


SLAA274 TI Pulse Oximeter

Started by steam_y in MSP4308 years ago 4 replies
LED

Again I call for help. 1. The SLAA274 schematic on the last page... has an led and two switches. I cannot find where in the code this led is...

Again I call for help. 1. The SLAA274 schematic on the last page... has an led and two switches. I cannot find where in the code this led is activated. Can anyone point this out to me? Also, the two switches...is their purpose related to delaying power for circuit timing purposes? 2. Regarding the NPN & PNP LED transistor circuits...there are differences, mainly resistors, between the ...


Help on TimerA

Started by msp430_1984 in MSP43011 years ago 3 replies

hi im new to msp430 and looking for a solution of a LED funktion. i would like to say the function how often or/and the time how long the...

hi im new to msp430 and looking for a solution of a LED funktion. i would like to say the function how often or/and the time how long the led should blink! its for a projekt im doing! i need it urgent please help me!


LED Blink

Started by josef104 in MSP43013 years ago 24 replies

I just bought the MSP430F413STK2 kit from Olimex. I am trying to run a program to blink the LED on the kit. The documentation says the LCD...

I just bought the MSP430F413STK2 kit from Olimex. I am trying to run a program to blink the LED on the kit. The documentation says the LCD is connected to P6.2. Can someone tell me if there's something wrong with this code? I am able to compile, make and download the program successfully from IAR kickstart IDE, but the LED is not blinking. #include void main(void


Basic examples for Ez430

Started by jackal_204 in MSP43010 years ago 3 replies
LED

Hi all, I have just started to use Ez430-F2013 last week. I tested Flashing LED example but I would like to do more examples with the LED such...

Hi all, I have just started to use Ez430-F2013 last week. I tested Flashing LED example but I would like to do more examples with the LED such as changing the duty cycle or frequency. I am a newbie in C programming and I want to learn it with more examples. Can you please reply me any basic information or LED examples that you know about Ez430? Thanks for advance... Jack


Weird behaviour of I/O on F5438

Started by Markus Schaub in MSP4308 years ago 4 replies
LED

Hi, I observed a rather strange behaviour on the I/Os with a MSP430F5438 on an F5438 experimenters board. I had some code running on the...

Hi, I observed a rather strange behaviour on the I/Os with a MSP430F5438 on an F5438 experimenters board. I had some code running on the device that enabled on of the boards LEDs. After removing the debugging code that switched on the LED I tried to run the code on the MCU expecting that the LED now would stay off. However, it didn't. After every reset the LED switched immediately on again...


led

Started by msp430 nascimento in MSP43012 years ago 7 replies
LED

Hi people... I need to know how make to : loop: high led ( portp2.4) pause 1000 (ms ) low led (port p2.4) pause 1000 (ms) goto loop My msp...

Hi people... I need to know how make to : loop: high led ( portp2.4) pause 1000 (ms ) low led (port p2.4) pause 1000 (ms) goto loop My msp is msp430f1121A and i want to know how make this program in C ( cross works msp430) Thank you _______________________________________________________ Yahoo! Acesso Gr?tis: Internet r?pida e gr?tis. Instale o discador agora!


CCSv4 LED blink

Started by shskurkra in MSP4307 years ago 11 replies

Hi, Starting from CCSv4 with led blink program, posted in sampleEZlessons on led in files section. I noticed two error's whiles testing lesson...

Hi, Starting from CCSv4 with led blink program, posted in sampleEZlessons on led in files section. I noticed two error's whiles testing lesson two. One was "expected a expression" error, second was "identifier "i" is undefined" error, third is an warning "statement is unreachable" The second expression can be solved by defining "int i;" warning can be ignored because it is in-finite for lo...


ez 430 rf 2500 led

Started by som mitra in MSP4308 years ago 1 reply
LED

Hello , I somehow couldn't find which port is the green LED on the ez430 - rf 2500 attached to. Any ideas ???...

Hello , I somehow couldn't find which port is the green LED on the ez430 - rf 2500 attached to. Any ideas ??? som_tn ------------------------------------


problems with program

Started by msp430 nascimento in MSP43010 years ago 4 replies

Hi I started to programmer MSP430f2012 this saturday, and I found problems to compile the following program: #include "msp430x20x2.h" //...

Hi I started to programmer MSP430f2012 this saturday, and I found problems to compile the following program: #include "msp430x20x2.h" // delay_ms(void) ; #define LED P1OUT_BIT.P1OUT_0 #define botao P1IN_bit.P1IN_1 void main(void) { WDTCTL = WDTPW + WDTHOLD; // Stop watchdog timer P1DIR |= 0x01; // Set P1.0 to output direction while(1) { IF (botao) LED=0; else LED=1; } } I would l...


Led toggling more quickly when oscillator pending flag is not reset.

Started by "yad...@yahoo.com [msp430]" in MSP4303 years ago

Hai everyone. I am beginner in MSP430, I was watching MSP430 wprkshop videos from Texas Instruments. I was following the steps and the code...

Hai everyone. I am beginner in MSP430, I was watching MSP430 wprkshop videos from Texas Instruments. I was following the steps and the code they explained in workshop in one code where they source clock from VLO and toggle led, I forgot to reset oscillator pending interrupt flag then led started blinking fastly can anyone explain me why. Here is the code snippet. #include


msp430 sample program source that exchanges data between PC and msp430

Started by Gang-Ryung Uh in MSP4307 years ago 1 reply
LED

I just purchased ez430-rf2480 zigbee demo kit and I am desperately looking for a sample source. In particular, what I am trying to do is to write...

I just purchased ez430-rf2480 zigbee demo kit and I am desperately looking for a sample source. In particular, what I am trying to do is to write a simple program that toggles red LED connected to msp430 from PC over serial com port. For instance, when "A" is typed from hyperterm, turn on LED connected to MSP430 and when "B" is typed, turn off LED. Thanks in advance. Regards, -- UGR ...