SDI lab / Mbed 2 deprecated RAM_Burst_test

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Dependencies:   mbed

Files at this revision

API Documentation at this revision

Revision 0:3cf5359a87e8, committed 2014-01-17

Comitter:
cillino
Date:
Fri Jan 17 20:33:26 2014 +0000
Commit message:
RAM Burst test for SPI slave.

Changed in this revision

main.cpp Show annotated file Show diff for this revision Revisions of this file
mbed.bld Show annotated file Show diff for this revision Revisions of this file 
--- /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;
+    }
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Fri Jan 17 20:33:26 2014 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/a9913a65894f
\ No newline at end of file