./workspace/TS100 -> ./source/

source/Core/Drivers/FUSB302/pdb_msg.h

@@ -0,0 +1,55 @@
+/*
+ * PD Buddy Firmware Library - USB Power Delivery for everyone
+ * Copyright 2017-2018 Clayton G. Hobbs
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef PDB_MSG_H
+#define PDB_MSG_H
+
+#include <stdint.h>
+
+
+
+/*
+ * PD message union
+ *
+ * This can be safely read from or written to in any form without any
+ * transformations because everything in the system is little-endian.
+ *
+ * Two bytes of padding are required at the start to prevent problems due to
+ * alignment.  Specifically, without the padding, &obj[0] != &bytes[2], making
+ * the statement in the previous paragraph invalid.
+ */
+union pd_msg {
+    struct {
+        uint8_t _pad1[2];
+        uint8_t bytes[30];
+    } __attribute__((packed));
+    struct {
+        uint8_t _pad2[2];
+        uint16_t hdr;
+        union {
+            uint32_t obj[7];
+            struct {
+                uint16_t exthdr;
+                uint8_t data[26];
+            };
+        };
+    } __attribute__((packed));
+};
+
+
+
+#endif /* PDB_MSG_H */