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:
7:b3e8b537d5c2
Parent:
6:b480fc4e87e5
Child:
8:e2d8bbc3e659
diff -r b480fc4e87e5 -r b3e8b537d5c2 mmSPI.cpp
--- a/mmSPI.cpp	Wed Aug 14 15:19:24 2013 +0000
+++ b/mmSPI.cpp	Wed Aug 14 15:34:10 2013 +0000
@@ -43,10 +43,11 @@
 //  we're not going for speed, so lets go for good setup / hold.
 
                                                 // send/receive a byte over SPI.
+                                                // MSB out/in first.
     void mmSPI::transceive_byte(char *cReceive, char *cSend)
     {
       *cReceive = 0;                            // clear receive byte.                                    
-      for (cLoop01 = 7; cLoop01 >= 0; cLoop01++)// loop for 8 bits in the byte.
+      for (cLoop01 = 7; cLoop01 >= 0; cLoop01--)// loop for 8 bits in the byte.
       {
         *pSCLK = 0;                             // SPI clock negedge.
         wait(fSPIquarterP);                     // until middle of clock low.
@@ -59,6 +60,15 @@
       }
     }
 //----------------------------------------------//------------------------------
+                                                // transceive a character array.
+                                                // limit is 256 characters.
+                                                // MSB out/in first.
+    void mmSPI::transceive_vector(char *cReceive, char *cSend, char cNumBytes)
+    {    
+      for (cLoop02 = (cNumBytes - 1); cLoop02 >= 0; cLoop02--)
+      transceive_byte(&(cReceive[cLoop02]), &(cSend[cLoop02]));
+    }
+//----------------------------------------------//------------------------------
 
 
 
@@ -68,3 +78,15 @@
 
 
 
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