wimbeaumont Project / SWSPI

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Dependents:   sscm SPItest sscm

Fork of SWSPI by Dave Van Wagner

Diff: SWSPI.cpp

Revision:
2:598d0028d5d2
Parent:
1:02327a96a5e2
Child:
3:9c5ae1507a81
diff -r 02327a96a5e2 -r 598d0028d5d2 SWSPI.cpp
--- a/SWSPI.cpp	Tue Sep 23 08:25:01 2014 +0000
+++ b/SWSPI.cpp	Thu Oct 02 06:21:10 2014 +0000
@@ -51,17 +51,18 @@
     this->freq = hz;
 }
 
-int SWSPI::write(int value)
+unsigned int  SWSPI::write(unsigned int  value)
 {
     int read = 0;
+    //printf("SPI write %08X ",value);
     //wait(1.0/freq/2);
     for (int bit = bits-1; bit >= 0; --bit)
     {
-        mosi->write(((value >> bit) & 0x01) != 0);
+        mosi->write(((value >> bit) & 0x01) == 0);
 
         if (phase == 0)
         {
-            if (miso->read())
+            if (!miso->read())
                 read |= (1 << bit);
         }
 
@@ -71,7 +72,7 @@
 
         if (phase == 1)
         {
-            if (miso->read())
+            if (!miso->read())
                 read |= (1 << bit);
         }
 
@@ -79,6 +80,7 @@
 
         //wait(1.0/freq/2);
     }
+    //printf("  SPIR reads %08X \n\r" , read);
     return read;
 }