diff options
| author | Marcel Holtmann <marcel@holtmann.org> | 2005-12-02 19:34:29 +0000 |
|---|---|---|
| committer | Marcel Holtmann <marcel@holtmann.org> | 2005-12-02 19:34:29 +0000 |
| commit | 138621bf2dbcfa89e85a35010a406d447365cf7e (patch) | |
| tree | d7751e11648be5689eb7fd0ff7a8043ed2ebdcc0 /tools/ubcsp.h | |
| parent | 2a6755856c498491474e64aa506b81031a1269f7 (diff) | |
Add MicroBCSP implementation
Diffstat (limited to 'tools/ubcsp.h')
| -rw-r--r-- | tools/ubcsp.h | 208 |
1 files changed, 208 insertions, 0 deletions
diff --git a/tools/ubcsp.h b/tools/ubcsp.h new file mode 100644 index 00000000..6a74e9a1 --- /dev/null +++ b/tools/ubcsp.h @@ -0,0 +1,208 @@ +/*
+ *
+ * BlueZ - Bluetooth protocol stack for Linux
+ *
+ * Copyright (C) 2000-2005 CSR Ltd.
+ *
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ */
+
+#ifndef UBCSP_INCLUDE_H
+#define UBCSP_INCLUDE_H
+
+/*****************************************************************************/
+/*****************************************************************************/
+/*****************************************************************************/
+/** **/
+/** ubcsp.h **/
+/** **/
+/** MicroBCSP - a very low cost implementation of the BCSP protocol **/
+/** **/
+/*****************************************************************************/
+
+/* If we wish to use CRC's, then change 0 to 1 in the next line */
+#define UBCSP_CRC 1
+
+/* Define some basic types - change these for your architecture */
+typedef unsigned char uint8;
+typedef unsigned short uint16;
+typedef unsigned int uint32;
+typedef signed char int8;
+typedef signed short int16;
+typedef signed int int32;
+
+/* The defines below require a printf function to be available */
+
+/* Do we want to show packet errors in debug output */
+#define SHOW_PACKET_ERRORS 0
+
+/* Do we want to show Link Establishment State transitions in debug output */
+#define SHOW_LE_STATES 0
+
+/*****************************************************************************/
+/** **/
+/** ubcsp_packet **/
+/** **/
+/** This is description of a bcsp packet for the upper layer **/
+/** **/
+/*****************************************************************************/
+
+struct ubcsp_packet
+{
+ uint8 channel; /* Which Channel this packet is to/from */
+ uint8 reliable; /* Is this packet reliable */
+ uint8 use_crc; /* Does this packet use CRC data protection */
+ uint16 length; /* What is the length of the payload data */
+ uint8 *payload; /* The payload data itself - size of length */
+};
+
+/*****************************************************************************/
+/** **/
+/** ubcsp_configuration **/
+/** **/
+/** This is the main configuration of the ubcsp engine **/
+/** All state variables are stored in this structure **/
+/** **/
+/*****************************************************************************/
+
+enum ubcsp_link_establishment_state
+{
+ ubcsp_le_uninitialized,
+ ubcsp_le_initialized,
+ ubcsp_le_active
+};
+
+enum ubcsp_link_establishment_packet
+{
+ ubcsp_le_sync,
+ ubcsp_le_sync_resp,
+ ubcsp_le_conf,
+ ubcsp_le_conf_resp,
+ ubcsp_le_none
+};
+
+struct ubcsp_configuration
+{
+ uint8 link_establishment_state;
+ uint8 link_establishment_resp;
+ uint8 link_establishment_packet;
+
+ uint8 sequence_number:3;
+ uint8 ack_number:3;
+ uint8 send_ack;
+ struct ubcsp_packet *send_packet;
+ struct ubcsp_packet *receive_packet;
+
+ uint8 receive_header_checksum;
+ uint8 receive_slip_escape;
+ int32 receive_index;
+
+ uint8 send_header_checksum;
+#ifdef UBCSP_CRC
+ uint8 need_send_crc;
+ uint16 send_crc;
+#endif
+ uint8 send_slip_escape;
+
+ uint8 *send_ptr;
+ int32 send_size;
+ uint8 *next_send_ptr;
+ int32 next_send_size;
+
+ int8 delay;
+};
+
+/*****************************************************************************/
+/** **/
+/** ubcsp_poll sets activity from an OR of these flags **/
+/** **/
+/*****************************************************************************/
+
+#define UBCSP_PACKET_SENT 0x01
+#define UBCSP_PACKET_RECEIVED 0x02
+#define UBCSP_PEER_RESET 0x04
+#define UBCSP_PACKET_ACK 0x08
+
+/*****************************************************************************/
+/** **/
+/** This is the functional interface for ucbsp **/
+/** **/
+/*****************************************************************************/
+
+void ubcsp_initialize (void);
+void ubcsp_send_packet (struct ubcsp_packet *send_packet);
+void ubcsp_receive_packet (struct ubcsp_packet *receive_packet);
+uint8 ubcsp_poll (uint8 *activity);
+
+/*****************************************************************************/
+/** **/
+/** Slip Escape Values **/
+/** **/
+/*****************************************************************************/
+
+#define SLIP_FRAME 0xC0
+#define SLIP_ESCAPE 0xDB
+#define SLIP_ESCAPE_FRAME 0xDC
+#define SLIP_ESCAPE_ESCAPE 0xDD
+
+/*****************************************************************************/
+/*****************************************************************************/
+/*****************************************************************************/
+
+/*****************************************************************************/
+/** **/
+/** These functions need to be linked into your system **/
+/** **/
+/*****************************************************************************/
+
+/*****************************************************************************/
+/** **/
+/** put_uart outputs a single octet over the UART Tx line **/
+/** **/
+/*****************************************************************************/
+
+extern void put_uart (uint8);
+
+/*****************************************************************************/
+/** **/
+/** get_uart receives a single octet over the UART Rx line **/
+/** if no octet is available, then this returns 0 **/
+/** if an octet was read, then this is returned in the argument and **/
+/** the function returns 1 **/
+/** **/
+/*****************************************************************************/
+
+extern uint8 get_uart (uint8 *);
+
+/*****************************************************************************/
+/** **/
+/** These defines should be changed to your systems concept of 100ms **/
+/** **/
+/*****************************************************************************/
+
+#define UBCSP_POLL_TIME_IMMEDIATE 0
+#define UBCSP_POLL_TIME_DELAY 25
+
+/*****************************************************************************/
+/*****************************************************************************/
+/*****************************************************************************/
+#endif |