Added INVERTED_ISP_MISO compile time option to the AVRISP-MKII clone project (thanks...

[pub/USBasp.git] / Projects / AVRISP-MKII / Lib / ISP / ISPTarget.h

diff --git a/Projects/AVRISP-MKII/Lib/ISP/ISPTarget.h b/Projects/AVRISP-MKII/Lib/ISP/ISPTarget.h
index 906ee82..350283f 100644 (file)
--- a/Projects/AVRISP-MKII/Lib/ISP/ISPTarget.h
+++ b/Projects/AVRISP-MKII/Lib/ISP/ISPTarget.h
@@ -104,10 +104,17 @@
                 */
                static inline uint8_t ISPTarget_ReceiveByte(void)
                {
                 */
                static inline uint8_t ISPTarget_ReceiveByte(void)
                {

+                       #if !defined(INVERTED_ISP_MISO)

                        if (HardwareSPIMode)
                          return SPI_ReceiveByte();
                        else
                          return ISPTarget_TransferSoftSPIByte(0x00);
                        if (HardwareSPIMode)
                          return SPI_ReceiveByte();
                        else
                          return ISPTarget_TransferSoftSPIByte(0x00);

+                       #else
+                       if (HardwareSPIMode)
+                         return ~SPI_ReceiveByte();
+                       else
+                         return ~ISPTarget_TransferSoftSPIByte(0x00);                  
+                       #endif

                }
 
                /** Sends and receives a byte of ISP data to and from the attached target, using the
                }
 
                /** Sends and receives a byte of ISP data to and from the attached target, using the


@@ -119,10 +126,17 @@
                 */
                static inline uint8_t ISPTarget_TransferByte(const uint8_t Byte)
                {
                 */
                static inline uint8_t ISPTarget_TransferByte(const uint8_t Byte)
                {

+                       #if !defined(INVERTED_ISP_MISO)

                        if (HardwareSPIMode)
                          return SPI_TransferByte(Byte);
                        else
                          return ISPTarget_TransferSoftSPIByte(Byte);
                        if (HardwareSPIMode)
                          return SPI_TransferByte(Byte);
                        else
                          return ISPTarget_TransferSoftSPIByte(Byte);

+                       #else
+                       if (HardwareSPIMode)
+                         return ~SPI_TransferByte(Byte);
+                       else
+                         return ~ISPTarget_TransferSoftSPIByte(Byte);          
+                       #endif

                }
 
 #endif
                }
 
 #endif