Diff: main.cpp

Revision:

0:3cf5359a87e8

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Fri Jan 17 20:33:26 2014 +0000
@@ -0,0 +1,77 @@
+#include "mbed.h"
+
+DigitalOut redLed( LED_RED ); // Led used to signal errors
+DigitalOut spiSS( PTD0 ); // Slave select is handled by GPIO
+
+int main() {
+    redLed = 0;
+    // Create SPI master instance, 8bit, CPOL=0, CPHA=1, 100kHz
+    SPI spiMaster( PTD2, PTD3, PTD1 ); // mosi, miso, sclk
+    spiMaster.format( 8, 1 );
+    spiMaster.frequency( 10000 );
+    // Deselect slave
+    spiSS = 1;
+    // Forever
+    wait(1);
+    
+    while( 1 ) {
+        int rx, dd1, dd2;
+        // Burst write
+        spiSS = 0;
+        spiMaster.write( '#' );
+        spiMaster.write( 0x07 ); // write RAM burst
+        spiMaster.write( 0x01 ); // AA1
+        spiMaster.write( 0x02 ); // AA2
+        spiMaster.write( 0x03 ); // AA3
+        
+        
+        for(int i = 0; i < 100; i++ ){
+            spiMaster.write( i ); // DD1
+            spiMaster.write( i+1 ); // DD2
+            
+            do{
+                rx = spiMaster.write( 0x55 );
+            }while( rx != '@' );
+            rx = 0;
+        }
+        
+        spiMaster.write( '#' );  // termina burst
+        
+        
+        spiSS = 1;
+        wait( 1 );
+        
+        // Burst Read
+        spiSS = 0;
+        spiMaster.write( '#' );
+        spiMaster.write( 0x05 ); // burst read RAM
+        spiMaster.write( 0x01 ); // AA1
+        spiMaster.write( 0x02 ); // AA2
+        spiMaster.write( 0x03 ); // AA3
+        
+        for(int i = 0; i < 100; i++ ){
+            do{
+                rx = spiMaster.write( 0x55 );
+            }while( rx != '@' );
+            rx = 0;
+            
+            dd1 = spiMaster.write( 0x55 );
+            dd2 = spiMaster.write( 0x55 );
+            
+            //if( (dd1 == i) && (dd2 == (i+2))){
+            //    redLed = 1;
+            //}
+            
+            if(( dd1 != i ) or (dd2 != (i+1) )){
+                redLed = 0;     // NON DEVE SBAGLIARE
+                //wait( 0.5 );
+            }
+            redLed = 1;
+            
+            //redLed = 0;
+            //wait( 0.5 );
+        }
+        
+        spiSS = 1;
+    }
+}