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Found 3 results

  1. ConfusedCoder

    MSP430F5529 LPM Questions

    Hi, I was working on interfacing my MSP430 with a 4x4 keypad and I stumbled upon this application report. Then I looked into the specific low power modes of the F5529 and noticed that there was a LPM4.5. The application report uses LPM4 as it isn't the same device, and I was wondering if it was possible to use LPM4.5 as the device was waiting for keypad input as my goal is to minimize power usage.
  2. Ditschi93

    Keypad to relay

    Hello, i want to control relays with my keypad. I work with the Launchpad TM4C123 80MHz. i wrote a script but the relay isn´t working. The relay is alright and i don´t know the problem. Can anyone help me?
  3. Hello, I tried to use my MSP430G2553 launchpad with a keypad (https://www.sparkfun.com/products/8653) using http://www.pjrc.com/teensy/td_libs_Keypad.html http://bildr.org/2011/05/arduino-keypad/ http://www.instructables.com/id/Using-the-sparkfun-12-Button-keypad-with-the-ardu/ http://www.ti.com/lit/an/slaa139/slaa139.pdf (i just tried schematic with Energia code) http://little-scale.blogspot.com/2011/10/how-to-connect-keypad-to-arduino-simple.html (prints blank lines in same row , buttons doesn't work except 2,5,8,0 and they print "y") #include <Keypad.h> const byte ROWS = 4; //four rows const byte COLS = 3; //three columns char keys[ROWS][COLS] = { {'1','2','3'}, {'4','5','6'}, {'7','8','9'}, {'#','0','*'} }; //byte rowPins[ROWS] = {5, 4, 3, 2}; //connect to the row pinouts of the keypad //byte colPins[COLS] = {8, 7, 6}; //connect to the column pinouts of the keypad byte rowPins[ROWS] = { P1_5, P1_4, P1_3, P1_2 }; // Connect keypad COL0, COL1 and COL2 to these Arduino pins. byte colPins[COLS] = { P1_0, P1_7, P1_6 }; Keypad keypad = Keypad( makeKeymap(keys), rowPins, colPins, ROWS, COLS ); void setup(){ Serial.begin(9600); } void loop(){ Serial.print("Serial test\n"); delay(100); char key = keypad.getKey(); if (key != NO_KEY){ Serial.println(key); } } None of them works, they only print "Serial test" and thats when i press RESET. I tried using latest keypad library from ARDUINO site or the libraries that in those tutorials. Do i need a different way to wire up the keypad to launchpad or need a different library? Thank you.
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