Jayla Williams
/
lab1_pt6
ECE 4180
main.cpp
- Committer:
- jwilliams664
- Date:
- 2021-02-01
- Revision:
- 0:3668dd178871
File content as of revision 0:3668dd178871:
#include <mbed.h> #include <mpr121.h> DigitalOut led1(LED1); DigitalOut led2(LED2); DigitalOut led3(LED3); DigitalOut led4(LED4); // Create the interrupt receiver object on pin 26 InterruptIn interrupt(p26); // Setup the i2c bus on pins 9 and 10 I2C i2c(p9, p10); // Setup the Mpr121: // constructor(i2c object, i2c address of the mpr121) Mpr121 mpr121(&i2c, Mpr121::ADD_VSS); // Key hit/release interrupt routine void fallInterrupt() { int key_code=0; int i=0; int value=mpr121.read(0x00); value +=mpr121.read(0x01)<<8; // LED demo mod i=0; // puts key number out to LEDs for demo for (i=0; i<12; i++) { if (((value>>i)&0x01)==1) key_code=i+1; } led4=key_code & 0x01; led3=(key_code>>1) & 0x01; led2=(key_code>>2) & 0x01; led1=(key_code>>3) & 0x01; } int main() { interrupt.fall(&fallInterrupt); interrupt.mode(PullUp); while (1) {} }