Diff: btstack/utils.h

Revision:

0:fccb789424fc

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/btstack/utils.h	Mon Jun 10 16:01:50 2013 +0000
@@ -0,0 +1,127 @@
+/*
+ * Copyright (C) 2009 by Matthias Ringwald
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the copyright holders nor the names of
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY MATTHIAS RINGWALD AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS
+ * RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+ * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ */
+
+/*
+ *  utils.h
+ *
+ *  General utility functions
+ *
+ *  Created by Matthias Ringwald on 7/23/09.
+ */
+
+#pragma once
+
+
+#if defined __cplusplus
+extern "C" {
+#endif
+
+#include <stdint.h>
+
+/**
+ * @brief hci connection handle type
+ */
+typedef uint16_t hci_con_handle_t;
+
+/**
+ * @brief Length of a bluetooth device address.
+ */
+#define BD_ADDR_LEN 6
+typedef uint8_t bd_addr_t[BD_ADDR_LEN];
+
+/**
+ * @brief The link key type
+ */
+#define LINK_KEY_LEN 16
+typedef uint8_t link_key_t[LINK_KEY_LEN]; 
+
+/**
+ * @brief The device name type
+ */
+#define DEVICE_NAME_LEN 248
+typedef uint8_t device_name_t[DEVICE_NAME_LEN+1]; 
+    
+    
+// helper for BT little endian format
+#define READ_BT_16( buffer, pos) ( ((uint16_t) buffer[pos]) | (((uint16_t)buffer[pos+1]) << 8))
+#define READ_BT_24( buffer, pos) ( ((uint32_t) buffer[pos]) | (((uint32_t)buffer[pos+1]) << 8) | (((uint32_t)buffer[pos+2]) << 16))
+#define READ_BT_32( buffer, pos) ( ((uint32_t) buffer[pos]) | (((uint32_t)buffer[pos+1]) << 8) | (((uint32_t)buffer[pos+2]) << 16) | (((uint32_t) buffer[pos+3])) << 24)
+
+// helper for SDP big endian format
+#define READ_NET_16( buffer, pos) ( ((uint16_t) buffer[pos+1]) | (((uint16_t)buffer[pos  ]) << 8))
+#define READ_NET_32( buffer, pos) ( ((uint32_t) buffer[pos+3]) | (((uint32_t)buffer[pos+2]) << 8) | (((uint32_t)buffer[pos+1]) << 16) | (((uint32_t) buffer[pos])) << 24)
+
+// HCI CMD OGF/OCF
+#define READ_CMD_OGF(buffer) (buffer[1] >> 2)
+#define READ_CMD_OCF(buffer) ((buffer[1] & 0x03) << 8 | buffer[0])
+
+// check if command complete event for given command
+#define COMMAND_COMPLETE_EVENT(event,cmd) ( event[0] == HCI_EVENT_COMMAND_COMPLETE && READ_BT_16(event,3) == cmd.opcode)
+#define COMMAND_STATUS_EVENT(event,cmd) ( event[0] == HCI_EVENT_COMMAND_STATUS && READ_BT_16(event,4) == cmd.opcode)
+
+// Code+Len=2, Pkts+Opcode=3; total=5
+#define OFFSET_OF_DATA_IN_COMMAND_COMPLETE 5
+
+// ACL Packet
+#define READ_ACL_CONNECTION_HANDLE( buffer ) ( READ_BT_16(buffer,0) & 0x0fff)
+#define READ_ACL_FLAGS( buffer )      ( buffer[1] >> 4 )
+#define READ_ACL_LENGTH( buffer )     (READ_BT_16(buffer, 2))
+
+// L2CAP Packet
+#define READ_L2CAP_LENGTH(buffer)     ( READ_BT_16(buffer, 4))
+#define READ_L2CAP_CHANNEL_ID(buffer) ( READ_BT_16(buffer, 6))
+
+void bt_store_16(uint8_t *buffer, uint16_t pos, uint16_t value);
+void bt_store_32(uint8_t *buffer, uint16_t pos, uint32_t value);
+void bt_flip_addr(bd_addr_t dest, bd_addr_t src);
+
+void net_store_16(uint8_t *buffer, uint16_t pos, uint16_t value);
+void net_store_32(uint8_t *buffer, uint16_t pos, uint32_t value);
+
+void hexdump(void *data, int size);
+void printUUID(uint8_t *uuid);
+
+// @deprecated please use more convenient bd_addr_to_str
+void print_bd_addr( bd_addr_t addr);
+char * bd_addr_to_str(bd_addr_t addr);
+
+int sscan_bd_addr(uint8_t * addr_string, bd_addr_t addr);
+    
+uint8_t crc8_check(uint8_t *data, uint16_t len, uint8_t check_sum);
+uint8_t crc8_calc(uint8_t *data, uint16_t len);
+
+#define BD_ADDR_CMP(a,b) memcmp(a,b, BD_ADDR_LEN)
+#define BD_ADDR_COPY(dest,src) memcpy(dest,src,BD_ADDR_LEN)
+
+#if defined __cplusplus
+}
+#endif
+