mac_rx.lst
来自「TI的基于ZIGBEE2006的协议栈」· LST 代码 · 共 1,148 行 · 第 1/5 页
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54 /* receive FIFO bytes needed to start a valid receive (see function rxStartIsr for details) */
55 #define RX_THRESHOLD_START_LEN (MAC_PHY_PHR_LEN + \
56 MAC_FCF_FIELD_LEN + \
57 MAC_SEQ_NUM_FIELD_LEN + \
58 MAC_FCS_FIELD_LEN)
59
60 /* maximum size of addressing fields (note: command frame identifier processed as part of address) */
61 #define MAX_ADDR_FIELDS_LEN ((MAC_EXT_ADDR_FIELD_LEN + MAC_PAN_ID_FIELD_LEN) * 2)
62
63 /* addressing mode reserved value */
64 #define ADDR_MODE_RESERVERED 1
65
66 /* length of command frame identifier */
67 #define CMD_FRAME_ID_LEN 1
68
69 /* packet size mask is equal to the maximum value */
70 #define PHY_PACKET_SIZE_MASK 0x7F
71
72 /* value for promiscuous off, must not conflict with other mode variants from separate include files */
73 #define PROMISCUOUS_MODE_OFF 0x00
74
75 /* bit of proprietary FCS format that indicates if the CRC is OK */
76 #define PROPRIETARY_FCS_CRC_OK_BIT 0x80
77
78 /* dummy length value for unused entry in lookup table */
79 #define DUMMY_LEN 0xBE
80
81 /* value for rxThresholdIntState */
82 #define RX_THRESHOLD_INT_STATE_INACTIVE 0
83 #define RX_THRESHOLD_INT_STATE_ACTIVE 1
84 #define RX_THRESHOLD_INT_STATE_RESET 2
85
86
87 /* ------------------------------------------------------------------------------------------------
88 * Macros
89 * ------------------------------------------------------------------------------------------------
90 */
91 #define MEM_ALLOC(x) macDataRxMemAlloc(x)
92 #define MEM_FREE(x) macDataRxMemFree((uint8 *)x)
93
94 /*
95 * Macro for encoding frame control information into internal flags format.
96 * Parameter is pointer to the frame. NOTE! If either the internal frame
97 * format *or* the specification changes, this macro will need to be modified.
98 */
99 #define INTERNAL_FCF_FLAGS(p) ((((p)[1] >> 4) & 0x03) | ((p)[0] & 0x78))
100
101 /*
102 * The radio replaces the actual FCS with different information. This proprietary FCS is
103 * the same length as the original and includes:
104 * 1) the RSSI value
105 * 2) the average correlation value (used for LQI)
106 * 3) a CRC passed bit
107 *
108 * These macros decode the proprietary FCS. The macro parameter is a pointer to the two byte FCS.
109 */
110 #define PROPRIETARY_FCS_RSSI(p) ((int8)((p)[0]))
111 #define PROPRIETARY_FCS_CRC_OK(p) ((p)[1] & PROPRIETARY_FCS_CRC_OK_BIT)
112 #define PROPRIETARY_FCS_CORRELATION_VALUE(p) ((p)[1] & ~PROPRIETARY_FCS_CRC_OK_BIT)
113
114
115 /* ------------------------------------------------------------------------------------------------
116 * Global Variables
117 * ------------------------------------------------------------------------------------------------
118 */
\ In segment XDATA_Z, align 1, keep-with-next
\ 000000 REQUIRE __INIT_XDATA_Z
119 uint8 macRxActive;
\ macRxActive:
\ 000000 DS 1
\ In segment XDATA_Z, align 1, keep-with-next
\ 000000 REQUIRE __INIT_XDATA_Z
120 uint8 macRxFilter;
\ macRxFilter:
\ 000000 DS 1
\ In segment XDATA_Z, align 1, keep-with-next
\ 000000 REQUIRE __INIT_XDATA_Z
121 uint8 macRxOutgoingAckFlag;
\ macRxOutgoingAckFlag:
\ 000000 DS 1
122
123
124 /* ------------------------------------------------------------------------------------------------
125 * Local Constants
126 * ------------------------------------------------------------------------------------------------
127 */
\ In segment CODE_C, align 1
128 static const uint8 CODE macRxAddrLen[] =
\ ??macRxAddrLen:
\ 000000 00BE040A DB 0, 190, 4, 10
129 {
130 0, /* no address */
131 DUMMY_LEN, /* reserved */
132 MAC_PAN_ID_FIELD_LEN + MAC_SHORT_ADDR_FIELD_LEN, /* short address + pan id */
133 MAC_PAN_ID_FIELD_LEN + MAC_EXT_ADDR_FIELD_LEN /* extended address + pan id */
134 };
135
136
137 /* ------------------------------------------------------------------------------------------------
138 * Local Prototypes
139 * ------------------------------------------------------------------------------------------------
140 */
141 static void rxHaltCleanupFinalStep(void);
142
143 static void rxStartIsr(void);
144 static void rxAddrIsr(void);
145 static void rxPayloadIsr(void);
146 static void rxDiscardIsr(void);
147 static void rxFcsIsr(void);
148
149 static void rxPrepPayload(void);
150 static void rxDiscardFrame(void);
151 static void rxDone(void);
152 static void rxPostRxUpdates(void);
153
154
155 /* ------------------------------------------------------------------------------------------------
156 * Local Variables
157 * ------------------------------------------------------------------------------------------------
158 */
\ In segment XDATA_Z, align 1, keep-with-next
\ 000000 REQUIRE __INIT_XDATA_Z
159 static void (* pFuncRxState)(void);
\ ??pFuncRxState:
\ 000000 DS 3
\ In segment XDATA_Z, align 1, keep-with-next
\ 000000 REQUIRE __INIT_XDATA_Z
160 static macRx_t * pRxBuf;
\ ??pRxBuf:
\ 000000 DS 2
161
\ In segment XDATA_Z, align 1, keep-with-next
\ 000000 REQUIRE __INIT_XDATA_Z
162 static uint8 rxBuf[MAC_PHY_PHR_LEN + MAC_FCF_FIELD_LEN + MAC_SEQ_NUM_FIELD_LEN];
\ ??rxBuf:
\ 000000 DS 4
\ In segment XDATA_Z, align 1, keep-with-next
\ 000000 REQUIRE __INIT_XDATA_Z
163 static uint8 rxUnreadLen;
\ ??rxUnreadLen:
\ 000000 DS 1
\ In segment XDATA_Z, align 1, keep-with-next
\ 000000 REQUIRE __INIT_XDATA_Z
164 static uint8 rxNextLen;
\ ??rxNextLen:
\ 000000 DS 1
\ In segment XDATA_Z, align 1, keep-with-next
\ 000000 REQUIRE __INIT_XDATA_Z
165 static uint8 rxPayloadLen;
\ ??rxPayloadLen:
\ 000000 DS 1
\ In segment XDATA_Z, align 1, keep-with-next
\ 000000 REQUIRE __INIT_XDATA_Z
166 static uint8 rxFilter;
\ ??rxFilter:
\ 000000 DS 1
\ In segment XDATA_Z, align 1, keep-with-next
\ 000000 REQUIRE __INIT_XDATA_Z
167 static uint8 rxPromiscuousMode;
\ ??rxPromiscuousMode:
\ 000000 DS 1
\ In segment XDATA_Z, align 1, keep-with-next
\ 000000 REQUIRE __INIT_XDATA_Z
168 static uint8 rxIsrActiveFlag;
\ ??rxIsrActiveFlag:
\ 000000 DS 1
\ In segment XDATA_Z, align 1, keep-with-next
\ 000000 REQUIRE __INIT_XDATA_Z
169 static uint8 rxResetFlag;
\ ??rxResetFlag:
\ 000000 DS 1
170
171
172 /**************************************************************************************************
173 * @fn macRxInit
174 *
175 * @brief Initialize receive variable states.
176 *
177 * @param none
178 *
179 * @return none
180 **************************************************************************************************
181 */
\ In segment BANKED_CODE, align 1, keep-with-next
182 void macRxInit(void)
\ macRxInit:
183 {
\ 000000 C082 PUSH DPL
\ 000002 C083 PUSH DPH
\ 000004 ; Saved register size: 2
\ 000004 ; Auto size: 0
184 macRxFilter = RX_FILTER_OFF;
\ 000004 E4 CLR A
\ 000005 90.... MOV DPTR,#macRxFilter
\ 000008 F0 MOVX @DPTR,A
185 rxPromiscuousMode = PROMISCUOUS_MODE_OFF;
\ 000009 90.... MOV DPTR,#??rxPromiscuousMode
\ 00000C F0 MOVX @DPTR,A
186 pRxBuf = NULL; /* required for macRxReset() to function correctly */
\ 00000D 90.... MOV DPTR,#??pRxBuf
\ 000010 F0 MOVX @DPTR,A
\ 000011 A3 INC DPTR
\ 000012 F0 MOVX @DPTR,A
187 macRxActive = MAC_RX_ACTIVE_NO_ACTIVITY;
\ 000013 90.... MOV DPTR,#macRxActive
\ 000016 12.... LCALL ?Subroutine1 & 0xFFFF
188 pFuncRxState = &rxStartIsr;
189 macRxOutgoingAckFlag = 0;
\ ??CrossCallReturnLabel_2:
\ 000019 E4 CLR A
\ 00001A 90.... MOV DPTR,#macRxOutgoingAckFlag
\ 00001D F0 MOVX @DPTR,A
190 rxIsrActiveFlag = 0;
\ 00001E 90.... MOV DPTR,#??rxIsrActiveFlag
\ 000021 F0 MOVX @DPTR,A
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