Diff: main.cpp

Revision:

1:0216a6726c1c

Parent:

0:30b74cf0e645

Child:

2:d07a799c6926

--- a/main.cpp	Wed Nov 02 17:18:57 2011 +0000
+++ b/main.cpp	Thu Nov 03 12:26:16 2011 +0000
@@ -1,18 +1,35 @@
 #include "mbed.h"
 #include "USBHID.h"
 
-USBHID hid;
-HID_REPORT recv;
+//We declare a USBHID device: it can send 1 byte and receive 1 byte
+USBHID hid(1, 1);
+
+//Two reports where will be stored values to send and received
+HID_REPORT recv_report;
+HID_REPORT send_report;
+
+//Bus of leds
 BusOut leds(LED1,LED2,LED3,LED4);
 
-/*
- * In a loop, this program listens a HID_REPORT over USB.
- * The first byte of this report represents the state of BusOut
- * I use pywinusb to do that on windows (32bits).
- */
+//Bus of buttons
+BusInOut buttons(p21, p22, p23, p24);
+
 int main(void) {
+    uint8_t p_bus = 0;
+    send_report.length = 1;
+
     while (1) {
-        hid.read(&recv);
-        leds = recv.data[0];
+        //If a data is received, update led bus
+        if (hid.readNB(&recv_report)) {
+            leds = recv_report.data[0];
+        }
+
+        //if the bus of buttons has changed, send a report
+        if (buttons.read() != p_bus) {
+            p_bus = buttons.read();
+            send_report.data[0] = p_bus;
+            hid.send(&send_report);
+        }
+        wait(0.01);
     }
 }