Diff: main.cpp

Revision:

0:b121e4eadb42

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Mon Jul 06 12:45:23 2015 +0000
@@ -0,0 +1,50 @@
+#include "mbed.h"
+ 
+SPI spi(PTA16, PTA17, PTA15); // mosi, miso, sclk
+DigitalOut cs(PTD2);
+Serial pc(USBTX, USBRX);
+uint16_t input = 24576;
+uint16_t Num  = 15 ; 
+uint8_t K , F , i ,input2 = 0;
+ 
+int main() {
+    // Chip must be deselected
+    cs = 1;
+ 
+    // Setup the spi for 8 bit data, high steady state clock,
+    // second edge capture, with a 1MHz clock rate
+    spi.format(8,0);        // mode not decided
+    spi.frequency(1000000);
+ 
+    cs = 0;
+    spi.write(input);
+    spi.write(input2);
+    cs = 1;
+  
+     
+    
+    for ( i = 0 ; i<= 15; i++ )
+    
+    {
+         
+          cs = 0;          // Select the device by seting chip select low
+         
+          spi.write(0x3F) ;  // power up int ref and select all dacs 0b01101111
+          
+          K = Num >> 8   ; 
+          spi.write ( K );
+          F = Num - ( K << 8 ) ;
+          spi.write ( F) ;
+          Num = Num + 2400 ;
+          
+          cs = 1;
+          
+          wait  (1) ; 
+          pc.printf ("%d %d %d \n " , Num, F, K   ); 
+          pc.printf( "\n\r");
+          
+}
+ 
+ 
+ 
+}
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