📄 mac_backoff_timer.lst
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##############################################################################
# #
# IAR 8051 C/C++ Compiler V7.20H/W32 06/Nov/2008 11:13:23 #
# Copyright 2004-2006 IAR Systems. All rights reserved. #
# #
# Core = plain #
# Code model = banked #
# Data model = large #
# Calling convention = xdata reentrant #
# Constant location = data #
# Dptr setup = 1,16 #
# Source file = E:\解决\路由\Components\mac\low_level\srf03\mac_b #
# ackoff_timer.c #
# Command line = -f E:\解决\路由\Projects\zstack\Samples\SampleApp #
# \CC2430DB\..\..\..\Tools\CC2430DB\f8wCoord.cfg #
# (-DCPU32MHZ -DFORCE_MAC_NEAR -DROOT=__near_func #
# -DMAC_CFG_APP_PENDING_QUEUE=TRUE #
# -DZDO_COORDINATOR -DRTR_NWK -DBLINK_LEDS #
# "-DCONST=const __code" -DGENERIC=__generic) -f #
# E:\解决\路由\Projects\zstack\Samples\SampleApp\CC #
# 2430DB\..\..\..\Tools\CC2430DB\f8wConfig.cfg #
# (-DSECURE=0 -DDEFAULT_CHANLIST=0x00000800 #
# -DZDAPP_CONFIG_PAN_ID=0xFFFF #
# -DNWK_START_DELAY=100 -DEXTENDED_JOINING_RANDOM_M #
# ASK=0x007F -DBEACON_REQUEST_DELAY=100 #
# -DBEACON_REQ_DELAY_MASK=0x00FF #
# -DROUTE_EXPIRY_TIME=30 -DAPSC_ACK_WAIT_DURATION_P #
# OLLED=3000 -DNWK_INDIRECT_MSG_TIMEOUT=7 #
# -DMAX_RREQ_ENTRIES=10 -DAPSC_MAX_FRAME_RETRIES=3 #
# -DNWK_MAX_DATA_RETRIES=2 #
# -DMAX_POLL_FAILURE_RETRIES=2 -DMAX_BCAST=9 #
# -DAPS_MAX_GROUPS=16 -DMAX_RTG_ENTRIES=20 #
# -DNWK_MAX_BINDING_ENTRIES=10 #
# -DMAX_BINDING_CLUSTER_IDS=5 #
# "-DDEFAULT_KEY={0x01, 0x03, 0x05, 0x07, 0x09, #
# 0x0B, 0x0D, 0x0F, 0x00, 0x02, 0x04, 0x06, 0x08, #
# 0x0A, 0x0C, 0x0D}" -DRFD_RCVC_ALWAYS_ON=FALSE #
# -DPOLL_RATE=1000 -DQUEUED_POLL_RATE=100 #
# -DRESPONSE_POLL_RATE=100 -DREJOIN_POLL_RATE=440 #
# -DTOP_BOOT_PAGES=0) -I "D:\Program Files\IAR #
# Systems\Embedded Workbench 4.05 Evaluation #
# version\8051\inc\" -I "D:\Program Files\IAR #
# Systems\Embedded Workbench 4.05 Evaluation #
# version\8051\inc\clib\" -I #
# E:\解决\路由\Projects\zstack\Samples\SampleApp\CC #
# 2430DB\ -I E:\解决\路由\Projects\zstack\Samples\S #
# ampleApp\CC2430DB\..\Source\ -I #
# E:\解决\路由\Projects\zstack\Samples\SampleApp\CC #
# 2430DB\..\..\..\ZMain\TI2430DB\ -I #
# E:\解决\路由\Projects\zstack\Samples\SampleApp\CC #
# 2430DB\..\..\..\..\..\Components\mt\ -I #
# E:\解决\路由\Projects\zstack\Samples\SampleApp\CC #
# 2430DB\..\..\..\..\..\Components\hal\include\ -I #
# E:\解决\路由\Projects\zstack\Samples\SampleApp\CC #
# 2430DB\..\..\..\..\..\Components\hal\target\CC243 #
# 0DB\ -I E:\解决\路由\Projects\zstack\Samples\Samp #
# leApp\CC2430DB\..\..\..\..\..\Components\osal\mcu #
# \ccsoc\ -I E:\解决\路由\Projects\zstack\Samples\S #
# ampleApp\CC2430DB\..\..\..\..\..\Components\osal\ #
# include\ -I E:\解决\路由\Projects\zstack\Samples\ #
# SampleApp\CC2430DB\..\..\..\..\..\Components\stac #
# k\af\ -I E:\解决\路由\Projects\zstack\Samples\Sam #
# pleApp\CC2430DB\..\..\..\..\..\Components\stack\n #
# wk\ -I E:\解决\路由\Projects\zstack\Samples\Sampl #
# eApp\CC2430DB\..\..\..\..\..\Components\stack\sec #
# \ -I E:\解决\路由\Projects\zstack\Samples\SampleA #
# pp\CC2430DB\..\..\..\..\..\Components\stack\sys\ #
# -I E:\解决\路由\Projects\zstack\Samples\SampleApp #
# \CC2430DB\..\..\..\..\..\Components\stack\zdo\ #
# -I E:\解决\路由\Projects\zstack\Samples\SampleApp #
# \CC2430DB\..\..\..\..\..\Components\zmac\f8w\ -I #
# E:\解决\路由\Projects\zstack\Samples\SampleApp\CC #
# 2430DB\..\..\..\..\..\Components\zmac\ -I #
# E:\解决\路由\Projects\zstack\Samples\SampleApp\CC #
# 2430DB\..\..\..\..\..\Components\services\saddr\ #
# -I E:\解决\路由\Projects\zstack\Samples\SampleApp #
# \CC2430DB\..\..\..\..\..\Components\services\sdat #
# a\ -I E:\解决\路由\Projects\zstack\Samples\Sample #
# App\CC2430DB\..\..\..\..\..\Components\mac\includ #
# e\ -I E:\解决\路由\Projects\zstack\Samples\Sample #
# App\CC2430DB\..\..\..\..\..\Components\mac\high_l #
# evel\ -I E:\解决\路由\Projects\zstack\Samples\Sam #
# pleApp\CC2430DB\..\..\..\..\..\Components\mac\low #
# _level\srf03\ -I E:\解决\路由\Projects\zstack\Sam #
# ples\SampleApp\CC2430DB\..\..\..\..\..\Components #
# \mac\low_level\srf03\single_chip\ -D CC2430DB #
# -lC E:\解决\路由\Projects\zstack\Samples\SampleAp #
# p\CC2430DB\CoordinatorDB\List\ -lA #
# E:\解决\路由\Projects\zstack\Samples\SampleApp\CC #
# 2430DB\CoordinatorDB\List\ --diag_suppress #
# Pe001,Pa010 --diag_remark pe550 -o #
# E:\解决\路由\Projects\zstack\Samples\SampleApp\CC #
# 2430DB\CoordinatorDB\Obj\ -e #
# --require_prototypes -z9 --no_code_motion #
# --debug --core=plain --dptr=16,1 #
# --data_model=large --code_model=banked #
# --calling_convention=xdata_reentrant #
# --place_constants=data --nr_virtual_regs 8 #
# E:\解决\路由\Components\mac\low_level\srf03\mac_b #
# ackoff_timer.c #
# List file = E:\解决\路由\Projects\zstack\Samples\SampleApp\CC #
# 2430DB\CoordinatorDB\List\mac_backoff_timer.lst #
# Object file = E:\解决\路由\Projects\zstack\Samples\SampleApp\CC #
# 2430DB\CoordinatorDB\Obj\mac_backoff_timer.r51 #
# #
# #
##############################################################################
E:\解决\路由\Components\mac\low_level\srf03\mac_backoff_timer.c
1 /**************************************************************************************************
2 Filename:
3 Revised: $Date: 2007-03-26 16:18:09 -0700 (Mon, 26 Mar 2007) $
4 Revision: $Revision: 13860 $
5
6 Description:
7
8 Describe the purpose and contents of the file.
9
10 Copyright (c) 2006 by Texas Instruments, Inc.
11 All Rights Reserved. Permission to use, reproduce, copy, prepare
12 derivative works, modify, distribute, perform, display or sell this
13 software and/or its documentation for any purpose is prohibited
14 without the express written consent of Texas Instruments, Inc.
15 **************************************************************************************************/
16
17
18
19 /* ------------------------------------------------------------------------------------------------
20 * Includes
21 * ------------------------------------------------------------------------------------------------
22 */
23
24 /* hal */
25 #include "hal_types.h"
26 #include "hal_mcu.h"
\ In segment SFR_AN, at 0xa6
\ unsigned char volatile __sfr T2TLD
\ T2TLD:
\ 000000 DS 1
\ In segment SFR_AN, at 0xa7
\ unsigned char volatile __sfr T2THD
\ T2THD:
\ 000000 DS 1
\ In segment SFR_AN, at 0xc3
\ unsigned char volatile __sfr T2CNF
\ T2CNF:
\ 000000 DS 1
27
28 /* high-level specific */
29 #include "mac_spec.h"
30
31 /* exported low-level */
32 #include "mac_low_level.h"
33
34 /* low-level specific */
35 #include "mac_backoff_timer.h"
36 #include "mac_tx.h"
37
38 /* target specific */
39 #include "mac_radio_defs.h"
40
41 /* debug */
42 #include "mac_assert.h"
43
44
45 /* ------------------------------------------------------------------------------------------------
46 * Defines
47 * ------------------------------------------------------------------------------------------------
48 */
49 #define COMPARE_STATE_ROLLOVER_BV BV(0)
50 #define COMPARE_STATE_TRIGGER_BV BV(1)
51 #define COMPARE_STATE_ARM_BV BV(2)
52
53 #define COMPARE_STATE_TRIGGER COMPARE_STATE_TRIGGER_BV
54 #define COMPARE_STATE_ROLLOVER COMPARE_STATE_ROLLOVER_BV
55 #define COMPARE_STATE_ROLLOVER_AND_TRIGGER (COMPARE_STATE_ROLLOVER_BV | COMPARE_STATE_TRIGGER_BV)
56 #define COMPARE_STATE_ROLLOVER_AND_ARM_TRIGGER (COMPARE_STATE_ROLLOVER_BV | COMPARE_STATE_ARM_BV)
57
58
59 /*
60 * The datasheet mentions a small delay on both receive and transmit side of approximately
61 * two microseconds. The precise characterization is given below.
62 * (This data is not given in rev 1.03 datasheet)
63 */
64 #define RX_TX_PROP_DELAY_AVG_USEC ((MAC_RADIO_RX_TX_PROP_DELAY_MIN_USEC + MAC_RADIO_RX_TX_PROP_DELAY_MAX_USEC) / 2)
65 #define RX_TX_PROP_DELAY_AVG_TIMER_TICKS ((uint16)(MAC_RADIO_TIMER_TICKS_PER_USEC() * RX_TX_PROP_DELAY_AVG_USEC + 0.5))
66
67 /*
68 * For slotted receives, the SFD signal is expected to occur on a specifc symbol boundary.
69 * This does *not* correspond to the backoff boundary. The SFD signal occurs at an
70 * offset from the backoff boundary. This is done for efficiency of related algorithms.
71 *
72 * Once transmit is strobed there is a fixed delay until the SFD signal occurs. The frame
73 * does not start over-the-air transmit until after an internal radio delay of 12 symbols.
74 * Once transmitting over-the-air, the preamble is sent (8 symbols) followed by the
75 * SFD field (2 symbols). After the SFD field completes, the SFD signal occurs. This
76 * adds up to a total of 22 symbols from strobe to SFD signal.
77 *
78 * Since 22 symbols spans more than a backoff (20 symbols) the modulus operation is used
79 * to find the symbol offset which is 2 symbols.
80 *
81 * This math is derived formally via the pre-processor.
82 */
83 #define SYMBOLS_FROM_STROBE_TO_PREAMBLE 12 /* from datasheet */
84 #define SYMBOLS_FROM_PREAMBLE_TO_SFD (MAC_SPEC_PREAMBLE_FIELD_LENGTH + MAC_SPEC_SFD_FIELD_LENGTH)
85 #define SYMBOLS_FROM_STROBE_TO_SFD (SYMBOLS_FROM_STROBE_TO_PREAMBLE + SYMBOLS_FROM_PREAMBLE_TO_SFD)
86 #define SYMBOLS_EXPECTED_AT_SFD (SYMBOLS_FROM_STROBE_TO_SFD % MAC_A_UNIT_BACKOFF_PERIOD)
87
88 /* after all that formal math, make sure the result is as expected */
89 #if (SYMBOLS_EXPECTED_AT_SFD != 2)
90 #error "ERROR! Internal problem with pre-processor math of slotted alignment."
91 #endif
92
93
94 /*
95 * The expected SFD signal occurs at the symbol offset *plus* a small internal propagation delay
96 * internal to the radio. This delay is given as the sum of a receive side delay and a transmit
97 * side delay. When this delay is subtracted from the internal timer, the internal time base
98 * actually becomes the actual receive time *minus* the transmit delay. This works out though.
99 * The transmit logic does *not* take into account this delay. Since the timer is skewed by the
100 * transmit delay already, the transmits go out precisely on time.
101 */
102 #define TIMER_TICKS_EXPECTED_AT_SFD ((SYMBOLS_EXPECTED_AT_SFD * MAC_RADIO_TIMER_TICKS_PER_SYMBOL()) \
103 + RX_TX_PROP_DELAY_AVG_TIMER_TICKS)
104
105
106 /* ------------------------------------------------------------------------------------------------
107 * Local Variables
108 * ------------------------------------------------------------------------------------------------
109 */
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