start of ctaphid

ctaphid.h

@@ -0,0 +1,47 @@
+#ifndef _CTAPHID_H_H
+#define _CTAPHID_H_H
+
+#include "usbhid.h"
+
+#define TYPE_MASK               0x80    // Frame type mask
+#define TYPE_INIT               0x80    // Initial frame identifier
+#define TYPE_CONT               0x00    // Continuation frame identifier
+
+#define CTAPHID_PING         (TYPE_INIT | 0x01) // Echo data through local processor only
+#define CTAPHID_MSG          (TYPE_INIT | 0x03) // Send U2F message frame
+#define CTAPHID_LOCK         (TYPE_INIT | 0x04) // Send lock channel command
+#define CTAPHID_INIT         (TYPE_INIT | 0x06) // Channel initialization
+#define CTAPHID_WINK         (TYPE_INIT | 0x08) // Send device identification wink
+#define CTAPHID_ERROR        (TYPE_INIT | 0x3f) // Error response
+
+#define CTAPHID_INIT_PAYLOAD_SIZE  (HID_MESSAGE_SIZE-7)
+#define CTAPHID_CONT_PAYLOAD_SIZE  (HID_MESSAGE_SIZE-5)
+
+#define CTAPHID_BROADCAST_CID       0xffffffff
+
+#define CTAPHID_BUFFER_SIZE         4096
+
+typedef struct
+{
+    uint32_t cid;
+    union{
+        struct{
+            uint8_t cmd;
+            uint8_t bcnth;
+            uint8_t bcntl;
+            uint8_t payload[CTAPHID_INIT_PAYLOAD_SIZE];
+        } init;
+        struct{
+            uint8_t seq;
+            uint8_t payload[CTAPHID_CONT_PAYLOAD_SIZE];
+        } cont;
+    } pkt;
+} CTAPHID_PACKET;
+
+void ctaphid_init();
+
+void ctaphid_handle_packet(uint8_t * pkt_raw);
+
+#define ctaphid_packet_len(pkt)     ((uint16_t)((pkt)->pkt.init.bcnth << 8) | ((pkt)->pkt.init.bcntl))
+
+#endif