Mike Moore / mmSPI-2

This is an involuntary fork, created because the repository would not update mmSPI. SPI library used to communicate with an altera development board attached to four zigbee-header pins.

Dependents:   Embedded_RTOS_Project

Fork of mmSPI by Mike Moore

Diff: mmSPI.cpp

Revision:
13:3e6886a96aea
Parent:
12:a1b7ce9c1d64
Child:
14:35717622a4fb
diff -r a1b7ce9c1d64 -r 3e6886a96aea mmSPI.cpp
--- a/mmSPI.cpp	Sat Aug 17 23:13:12 2013 +0000
+++ b/mmSPI.cpp	Sun Aug 18 04:09:47 2013 +0000
@@ -69,9 +69,32 @@
                                                 // limit is 256 characters.
                                                 // MSB out/in first.
     void mmSPI::transceive_vector(char *cReceive, char *cSend, char cNumBytes)
-    {    
+    {       
+                                                // the first SPI pulse after the
+                                                // CPU clock goes low is used for
+                                                // parallel-load of the SPI shadow
+                                                // registers, not for shifting.
+      if (0)
+      {
+        *pSCLK = 1;                              
+        wait(fSPIquarterP); 
+        wait(fSPIquarterP); 
+        *pSCLK = 0;
+        wait(fSPIquarterP); 
+        wait(fSPIquarterP); 
+      }
+    
       for (dLoop02 = (cNumBytes - 1); dLoop02 >= 0; dLoop02--)
       transceive_byte(&(cReceive[dLoop02]), &(cSend[dLoop02]));
+      
+      *pSCLK = 0;                               // SPI clock rests low.
+      
+      *pCPUclk = 1;                             // pulse the CPU clock.
+      wait(fSPIquarterP); 
+      wait(fSPIquarterP);     
+      *pCPUclk = 0;  
+      wait(fSPIquarterP); 
+      wait(fSPIquarterP); 
     }
 //----------------------------------------------//------------------------------
                                                 // transceive a character array.