Added start of the Still Image Host Class driver demo and driver code.

[pub/USBasp.git] / LUFA / Drivers / USB / LowLevel / Pipe.h

diff --git a/LUFA/Drivers/USB/LowLevel/Pipe.h b/LUFA/Drivers/USB/LowLevel/Pipe.h
index 3931f85..1057ec8 100644 (file)
--- a/LUFA/Drivers/USB/LowLevel/Pipe.h
+++ b/LUFA/Drivers/USB/LowLevel/Pipe.h
@@ -566,12 +566,16 @@
                        static inline uint16_t Pipe_Read_Word_LE(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;\r
                        static inline uint16_t Pipe_Read_Word_LE(void)\r
                        {\r
-                               uint16_t Data;\r
+                               union\r
+                               {\r
+                                       uint16_t Word;\r
+                                       uint8_t  Bytes[2];\r
+                               } Data;\r
                                \r
-                               Data  = UPDATX;\r
-                               Data |= (((uint16_t)UPDATX) << 8);\r
+                               Data.Bytes[0] = UPDATX;\r
+                               Data.Bytes[1] = UPDATX;\r
                        \r
-                               return Data;\r
+                               return Data.Word;\r
                        }\r
 \r
                        /** Reads two bytes from the currently selected pipe's bank in big endian format, for OUT\r
@@ -584,12 +588,16 @@
                        static inline uint16_t Pipe_Read_Word_BE(void) ATTR_WARN_UNUSED_RESULT ATTR_ALWAYS_INLINE;\r
                        static inline uint16_t Pipe_Read_Word_BE(void)\r
                        {\r
-                               uint16_t Data;\r
+                               union\r
+                               {\r
+                                       uint16_t Word;\r
+                                       uint8_t  Bytes[2];\r
+                               } Data;\r
                                \r
-                               Data  = (((uint16_t)UPDATX) << 8);\r
-                               Data |= UPDATX;\r
+                               Data.Bytes[1] = UPDATX;\r
+                               Data.Bytes[0] = UPDATX;\r
                        \r
-                               return Data;\r
+                               return Data.Word;\r
                        }\r
                        \r
                        /** Writes two bytes to the currently selected pipe's bank in little endian format, for IN\r
@@ -691,8 +699,10 @@
                        static inline void Pipe_Write_DWord_LE(const uint32_t DWord) ATTR_ALWAYS_INLINE;\r
                        static inline void Pipe_Write_DWord_LE(const uint32_t DWord)\r
                        {\r
-                               Pipe_Write_Word_LE(DWord);\r
-                               Pipe_Write_Word_LE(DWord >> 16);\r
+                               UPDATX = (DWord &  0xFF);\r
+                               UPDATX = (DWord >> 8);\r
+                               UPDATX = (DWord >> 16);\r
+                               UPDATX = (DWord >> 24);\r
                        }\r
                        \r
                        /** Writes four bytes to the currently selected pipe's bank in big endian format, for IN\r
@@ -705,8 +715,10 @@
                        static inline void Pipe_Write_DWord_BE(const uint32_t DWord) ATTR_ALWAYS_INLINE;\r
                        static inline void Pipe_Write_DWord_BE(const uint32_t DWord)\r
                        {\r
-                               Pipe_Write_Word_BE(DWord >> 16);\r
-                               Pipe_Write_Word_BE(DWord);\r
+                               UPDATX = (DWord >> 24);\r
+                               UPDATX = (DWord >> 16);\r
+                               UPDATX = (DWord >> 8);\r
+                               UPDATX = (DWord &  0xFF);\r
                        }                       \r
                        \r
                        /** Discards four bytes from the currently selected pipe's bank, for OUT direction pipes.       \r