Diff: main.cpp

Revision:

0:5bfc0a45db24

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Mon Feb 27 22:32:33 2017 +0000
@@ -0,0 +1,39 @@
+#include <mbed.h>
+#include <mpr121.h>
+
+DigitalOut led1(LED1);
+DigitalOut led2(LED2);
+DigitalOut led3(LED3);
+DigitalOut led4(LED4);
+
+InterruptIn interrupt(p26); //interrupt receiver
+
+//i2c bus on pins 28(SDA) and 27(SCL)
+I2C i2c(p28, p27);
+
+//Setup the Mpr121:
+//ctor
+Mpr121 mpr121(&i2c, Mpr121::ADD_VSS);
+
+//key hit 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);    
+}
\ No newline at end of file