Diff: spi_functions.cpp

Revision:

0:15d9f9050d21

Child:

2:ac580453441f

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/spi_functions.cpp	Fri Jun 24 10:36:54 2016 +0000
@@ -0,0 +1,86 @@
+#include "mbed.h"
+#include <spi_functions.h>
+
+int sendConfiguration(Serial &serialOut,  SPI &dac_port, DigitalOut &sync)
+{
+    int nWords= 12;
+    unsigned short dac_data[nWords];
+    
+    //CONFIGURE ALL PORTS AS OUTPUTS
+    dac_data[0] = 0x0955; //
+    dac_data[1] = 0x0A55; //
+    dac_data[2] = 0x0B55; // 
+    dac_data[3] = 0x0C55; //
+    dac_data[4] = 0x0D55; //
+    dac_data[5] = 0x0E55; //
+    dac_data[6] = 0x0F55; //
+    
+    //SET ALL OUTPUTS TO 1
+    dac_data[7] = 0x44FF; // P4 - P11
+    dac_data[8] = 0x4CFF; // P12 - P19
+    dac_data[9] = 0x54FF; // P20 - P27
+    dac_data[10]= 0x5CFF; // P28 - P31
+    
+    //EXIT SHUTDOWN MODE
+    dac_data[11]= 0x0401;
+    /*
+    dac_data[0] = 0x0B5A; //
+    dac_data[1] = 0x0C55; //
+    dac_data[2] = 0x0D55; // 
+    dac_data[3] = 0x4E00; //
+    dac_data[4] = 0x5600; //
+    dac_data[5] = 0x0401; //
+    */
+    for (int i = 0; i < nWords; i++)
+    {
+        serialOut.printf("WRITING %d (0x%04x).\n", dac_data[i], dac_data[i]);
+        mySPISend(dac_data[i], dac_port, sync);
+    }
+    return 0;
+}
+
+int sendTransfer(unsigned short data,  SPI &dac_port, DigitalOut &sync)
+{
+    
+    //unsigned char nibble_data[2];
+    //nibble_data[0]= data >>8;
+    //nibble_data[1]= data;
+    
+    //unsigned char rx_buffer[2];
+    
+    //sync = 1;
+    //wait (0.5);
+    
+    //sync = 0;
+    
+    //dac_port.transfer(nibble_data , 2, rx_buffer, 2, *functionpointer);
+    //dac_port.write(data >> 8);// We have a 8 bit interface but need to write 16 bits. Two write in sequence (or use "transfer" instead)
+    //dac_port.write(data);
+
+    //sync = 1;
+
+    //wait (0.5);
+    
+    
+    return 0;    
+}
+
+
+int mySPISend( unsigned short data, SPI &dac_port, DigitalOut &sync)
+// This is the basic function used to send the signals.
+{
+    //sync = 1;
+    wait (0.5);
+
+    sync = 0;
+    
+    dac_port.write(data >> 8);// We have a 8 bit interface but need to write 16 bits. Two write in sequence (or use "transfer" instead)
+    dac_port.write(data);
+    
+    wait(0.000005); //
+    sync = 1;
+
+    wait (0.5);
+    return 0;    
+}
+