Diff: main.cpp

Revision:

3:ecfa4fa0b5a7

Parent:

2:029b0a855b82

--- a/main.cpp	Sat Jan 30 02:34:55 2016 +0000
+++ b/main.cpp	Sat Jan 30 03:22:41 2016 +0000
@@ -9,7 +9,7 @@
 #include "wdt.h"
 #include "MCP23S17.h"
 #include "Nav_Switch.h"
-
+#include "mpr121.h"
 
 
 DigitalOut LED_1(p21);
@@ -19,6 +19,35 @@
 DigitalIn switch3(p25);
 DigitalIn switch4(p26);
 
+DigitalOut led1(LED1);
+DigitalOut led2(LED2);
+DigitalOut led3(LED3);
+DigitalOut led4(LED4);
+
+
+InterruptIn interrupt(p27);
+
+I2C i2c(p9, p10);
+Mpr121 mpr121(&i2c, Mpr121::ADD_VSS);
+
+void fallInterrupt() {
+    int key_code=0;
+    int i=0;
+    int value=mpr121.read(0x00);
+    value +=mpr121.read(0x01)<<8;
+    // LED demo mod by J. Hamblen
+    //pc.printf("MPR value: %x \r\n", value);
+    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;
+}
+
 // Create an SPI bus
     SPI spi(p5, p6, p7);
 
@@ -37,7 +66,8 @@
     
     _pins.mode(PullUp);
     Nav_Switch myNav( p18, p15, p16, p19, p17);
-    
+    interrupt.fall(&fallInterrupt);
+    interrupt.mode(PullUp);
     char Opcode = 0x40;
 
     MCP23S17 chip(spi, p20, Opcode);