Diff: main.cpp

Revision:

7:2e7fe8cc61fc

Parent:

6:9f1bf46845ab

Child:

8:ccf136896865

--- a/main.cpp	Wed Jan 31 06:22:29 2018 +0000
+++ b/main.cpp	Wed Jan 31 06:29:08 2018 +0000
@@ -50,20 +50,12 @@
 //  Start Loopback test sending out and reading back values
 //  loopback test uses A0 and B0 pins - so use a wire to jumper those two pins on MCP23S17 together
     while (1) {
-        B0 = !(chip.read(PORT_B)& 0x01);
+        B0 = chip.read(PORT_B)& 0x01;
+        if(B0 == 0){
+        chip.write(PORT_A,1);
+        } else if  (B0 == 1) {
+          chip.write(PORT_A,0);
+        }
         
-        chip.write(PORT_A,B0);
-        //    chip.write(PORT_A,0); // turn off LED
-        // write 0xAA to MCP23S17 Port A
-       // chip.write(PORT_A, 0xAA);
-        //wait(.5);
-        // read back value from MCP23S17 Port B and display B0 on mbed led1
-        //led1 = chip.read(PORT_B)& 0x01;
-        // write 0x55 to MCP23S17 Port A
-        //chip.write(PORT_A, 0x55);
-        //wait(.5);
-        // read back value from MCP23S17 Port B and display B0 on mbed led1
-        //led1 = chip.read(PORT_B)& 0x01;
-        // led1 should blink slowly when it is all working
     }
 }