Diff: mmSPI.cpp

Revision:

22:7524dee5c753

Parent:

21:e90dd0f8aaa1

Child:

23:dbd89a56716d

--- a/mmSPI.cpp	Tue Aug 20 14:02:56 2013 +0000
+++ b/mmSPI.cpp	Tue Aug 20 14:13:32 2013 +0000
@@ -49,11 +49,33 @@
       error("\n\r mmSPI::setSPIfrequency : FATAL SPI frequency set too low. \n\r"); 
       fSPIquarterP = (1 / fSPIfreq) / 4;        // figure quarter-cycle period.
     }
+//----------------------------------------------//------------------------------  
+                                                // obtain SPI send buffer pointer.  
+    void mmSPI::setSendBuffer(char * pcSendBuffer)
+    {
+      pcSend = pcSendBuffer;                    // promote to object scope.
+    }
+//----------------------------------------------//------------------------------    
+                                                // obtain SPI receive buffer pointer.  
+    void mmSPI::setReceiveBuffer(char * pcReceiveBuffer)
+    {
+      pcReceive = pcReceiveBuffer;              // promote to object scope.
+    }    
 //----------------------------------------------//------------------------------
+                                                // obtain number of SPI bytes.
+    void mmSPI::setNumberOfBytes(int dNumberOfBytes)
+    {
+      dNumBytes = dNumberOfBytes;               // promote to object scope.
+    }
+//----------------------------------------------//------------------------------
+
+
+
+
                                                 // transceive a character array.
                                                 // limit is 256 characters.
                                                 // MSB out/in first.
-    void mmSPI::transceive_vector2(char *pcReceive, char *pcSend, int dNumBytes)
+    void mmSPI::transceive_vector(char *pcReceive, char *pcSend, int dNumBytes)
     {      
       int  dClear;
       int  dIndex;       
@@ -118,7 +140,7 @@
       pcSend[1] = ((cRegister & 0x07) << 2) | 0xA0;
       pcSend[0] = cValue & 0xFF;                // immediate value to i.w.
  
-      transceive_vector2(pcReceive, pcSend, 8); // transmit command.
+      transceive_vector(pcReceive, pcSend, 8); // transmit command.
  
                                                 // clear transmit vector.
       for (dLoop = 0; dLoop < 8; dLoop++) pcSend[dLoop] = 0x00; 
@@ -134,7 +156,7 @@
                                                 // send all 0.
       for (dLoop = 0; dLoop < 8; dLoop++) pcSend[dLoop] = 0x00;    
                    
-      transceive_vector2(pcReceive, pcSend, 8); // snap & scan-out reg contents.
+      transceive_vector(pcReceive, pcSend, 8); // snap & scan-out reg contents.
       
       return (pcReceive[6 - cRegister]);        // return the particular reg value.
     }
@@ -156,12 +178,12 @@
       pcSend[7] = 0x00;                         // write-enable high.
       pcSend[1] = 0x02;
       pcSend[0] = 0x00;
-      transceive_vector2(pcReceive, pcSend, 8);
+      transceive_vector(pcReceive, pcSend, 8);
       
       pcSend[7] = 0x00;                         // write-enable low.
       pcSend[1] = 0x00;
       pcSend[0] = 0x00;
-      transceive_vector2(pcReceive, pcSend, 8);   
+      transceive_vector(pcReceive, pcSend, 8);   
       
                                                 // clear transmit vector.
       for (dLoop = 0; dLoop < 8; dLoop++) pcSend[dLoop] = 0x00; 
@@ -186,12 +208,12 @@
       pcSend[7] = 0x02;                         // mbed sends command.
       pcSend[1] = 0xC8;                         // R2 <- MM[R3]
       pcSend[0] = 0x00;
-      transceive_vector2(pcReceive, pcSend, 8); // send command. 
+      transceive_vector(pcReceive, pcSend, 8); // send command. 
       
       pcSend[7] = 0x02;                         // mbed sends command.
       pcSend[1] = 0xC4;                         // R1 <- MM[R3]
       pcSend[0] = 0x00;
-      transceive_vector2(pcReceive, pcSend, 8); // send command.      
+      transceive_vector(pcReceive, pcSend, 8); // send command.      
            
                                                 // obtain MM content.
       cHData = read_register(0x02, pcReceive, pcSend);