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Found 3 results

  1. 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. 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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