Diff: main.cpp

Revision:

0:72b6af395c85

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Tue Sep 23 20:49:02 2014 +0000
@@ -0,0 +1,44 @@
+#include "mbed.h"
+
+
+I2CSlave slave(A5,A4);  //Configure I2C slave
+
+DigitalOut red_led(LED_RED);     //red led
+DigitalOut green_led(LED_GREEN);   //green led
+DigitalIn  switch_ip1(SW2);
+DigitalIn  switch_ip2(SW3);
+
+char switch_word ;    //word we will send
+char recd_val;        //value received from master
+
+int main() {
+
+  slave.address(0x52);
+    while (1) {
+      //set up switch_word from switches that are pressed 
+      switch_word=0xa0;          //set up a recognisable output pattern
+       if (switch_ip1==0)
+        switch_word=switch_word|0x01;
+      if (switch_ip2==0)
+        switch_word=switch_word|0x02;
+      slave.write(switch_word); //load up word to send
+      
+      //test for I2C, and act accordingly
+      int i = slave.receive();
+      printf ("%d\n\r" ,i);
+      if (i == 3)              //slave is addressed, Master will write
+        recd_val= slave.read();
+      //now set leds according to received word
+      red_led=1;
+      green_led=1;
+      recd_val=recd_val&0x03;
+          if (recd_val==1)
+        red_led=0;
+      if (recd_val==2)
+        green_led=0;
+      if (recd_val==3){
+        red_led=0;
+        green_led=0;
+      }
+   }            //end of while
+}          //end of main