📄 term3.lst
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915 void Key_scan(void)
916 {
917 1 unsigned char key_buf=0;
918 1
919 1 if (KEY==0)
920 1 {
C51 COMPILER V7.50 TERM3 04/06/2007 17:58:07 PAGE 16
921 2 key_buf=99;
922 2 }
923 1
924 1 if (key_buf==key_pre)
925 1 {
926 2 if (key_buf!=0)
927 2 {
928 3 key_work=0x55;
929 3 }
930 2 else
931 2 {
932 3 key_work=0;
933 3 key_press_time=0;
934 3 }
935 2 }
936 1 else
937 1 {
938 2 key_pre=key_buf;
939 2 key_press_time=0;
940 2 }
941 1 }
942
943
944 void Key_process(void)
945 {
946 1 if ((key_work==0x55) && (key_time==0))
947 1 {
948 2 key_work=0;key_time=1000; //key_zt==0 关机 key_zt==99 开机
949 2
950 2
951 2 if (key_zt==0) //如果当前状态是关机状态，此时有按键信号，则开机，延时开背光
952 2 {
953 3 key_zt=99;
954 3 LcdBackLight_Delay_AfterS2410=1800;
955 3 GPS_SW=0;
956 3 }
957 2 else if (key_zt==99) //如果当前状态是开机状态，此时有按键信号，则判断长按，关机
958 2 { //如果不长按，key_zt 不能变
959 3 }
960 2 }
961 1 }
962
963 void Delay_1uS(void)
964 {
965 1 unsigned char i;
966 1 for(i=0;i<200;i++);
967 1 }
968
969 void Variable_Init(void)
970 {
971 1 RecvByte=0;
972 1 LcdBackLight_Delay_AfterS2410=0;
973 1
974 1 key_press_time=0;
975 1
976 1 key_zt=0;key_time=0;
977 1
978 1 riqi[0]=0+0x30;
979 1 riqi[1]=6+0x30;
980 1 riqi[2]=0+0x30;
981 1 riqi[3]=8+0x30;
982 1 riqi[4]=0+0x30;
C51 COMPILER V7.50 TERM3 04/06/2007 17:58:07 PAGE 17
983 1 riqi[5]=5+0x30;
984 1
985 1 GPS_Alarm[0]=8+0x30;
986 1 GPS_Alarm[1]=5+0x30;
987 1
988 1 weixing[0]=0+0x30;
989 1 weixing[1]=0+0x30;
990 1
991 1 GPS_Current_pre=0;
992 1 GPS_Current=0;
993 1 GPS_time=0;
994 1 GPS_Alarm_js=0;
995 1 // GPS_SW = 1;
996 1
997 1 SW_IsFrame = 0;
998 1
999 1 Batt_Low = 1+0x30;
1000 1
1001 1 for (ii=0;ii<9;ii++) // Longitude
1002 1 {
1003 2 Longitude[ii]=0x30;
1004 2 }
1005 1 for (ii=0;ii<10;ii++) // Latitude
1006 1 {
1007 2 Latitude[ii]=0x30;
1008 2 }
1009 1
1010 1 DGPS=0x30;
1011 1
1012 1 for (ii=0;ii<4;ii++) // HDOP
1013 1 {
1014 2 HDOP[ii]=0x30;
1015 2 }
1016 1
1017 1 fm[0]=0x30;
1018 1 fm[1]=0x30;
1019 1 fm[2]=0x30;
1020 1 fmbak=0;
1021 1
1022 1 SRI=0;
1023 1 surt_js=0;
1024 1 b_light=0x30;
1025 1 }
1026
1027 //----------------------------------------------------------------------------
1028 //Interrupt Service Routine
1029 //----------------------------------------------------------------------------
1030 void PCA_ISR(void) interrupt 11
1031 {
1032 1 static char SUTXST = 0; //SW_UART TX????
1033 1 static char SURXST = 0; //SW_UART RX????
1034 1 static unsigned RXSHIFT = 0; //SW_UART RX?????
1035 1 unsigned int PCA_TEMP; //??????,????PCA?????
1036 1 //???
1037 1
1038 1 // Check receive interrupt flag first; service if CCF0 is set.
1039 1 if (CCF0){
1040 2 CCF0 = 0; // Clear interrupt flag.
1041 2 switch (SURXST){
1042 3
1043 3 // State 0: START bit received.
1044 3 // In this state, a negative edge on SW_TX has caused the interrupt,
C51 COMPILER V7.50 TERM3 04/06/2007 17:58:07 PAGE 18
1045 3 // meaning a START has been detected and the PCA0CP0 registers have
1046 3 // captured the value of PCA0.
1047 3 // - Check for receive enable and good START bit
1048 3 // - Switch PCA module 0 to software timer mode
1049 3 // - Add 3/2 bit time to module 0 capture registers to sample LSB.
1050 3 // - Increment RX state variable.
1051 3 case 0:
1052 3
1053 3 if (SREN & ~SW_RX){ // Check for receive enable and a good
1054 4 // START bit.
1055 4
1056 4 PCA_TEMP = (PCA0CPH0 << 8); // Read module 0 contents into
1057 4 PCA_TEMP |= PCA0CPL0; // PCA_TEMP.
1058 4
1059 4 PCA_TEMP += TH_TIME_COUNT; // Add 3/2 bit times to PCA_TEMP
1060 4
1061 4 PCA0CPL0 = PCA_TEMP; // Restore PCA0CPL0 and PCA0CPH0
1062 4 PCA0CPH0 = (PCA_TEMP >> 8); // with the updated value
1063 4
1064 4 PCA0CPM0 = 0x49; // Change module 0 to software
1065 4 // timer mode, interrupts enabled.
1066 4
1067 4 SURXST++; // Update RX state variable.
1068 4 }
1069 3 break;
1070 3
1071 3 // States 1-8: Bit Received
1072 3 // - Sample SW_RX pin
1073 3 // - Shift new bit into RXSHIFT
1074 3 // - Add 1 bit time to module 0 capture registers
1075 3 // - Increment RX state variable
1076 3 case 1:
1077 3 case 2:
1078 3 case 3:
1079 3 case 4:
1080 3 case 5:
1081 3 case 6:
1082 3 case 7:
1083 3 case 8:
1084 3
1085 3 RXSHIFT = RXSHIFT >> 1; // Shift right 1 bit
1086 3 if (SW_RX) // If SW_RX=1,
1087 3 RXSHIFT |= 0x80; // shift '1' into RXSHIFT msb
1088 3
1089 3 PCA_TEMP = (PCA0CPH0 << 8); // Read module 0 contents into
1090 3 PCA_TEMP |= PCA0CPL0; // PCA_TEMP.
1091 3
1092 3 PCA_TEMP += TIME_COUNT; // Add 1 bit time to PCA_TEMP
1093 3
1094 3 PCA0CPL0 = PCA_TEMP; // Restore PCA0CPL0 and PCA0CPH0
1095 3 PCA0CPH0 = (PCA_TEMP >> 8); // with the updated value
1096 3
1097 3 SURXST++; // Update RX state variable.
1098 3 break;
1099 3
1100 3 // State 9: 8-bits received, Capture STOP bit.
1101 3 // - Move RXSHIFT into RDR.
1102 3 // - Set SRI (indicate receive complete).
1103 3 // - Prepare module 0 for next transfer.
1104 3 // - Reset RX state variable.
1105 3 // - Trigger IE7 if user-level interrupt support is enabled.
1106 3 case 9:
C51 COMPILER V7.50 TERM3 04/06/2007 17:58:07 PAGE 19
1107 3
1108 3 RDR = RXSHIFT; // Move received data to receive register.
1109 3 SRI = 1; // Set receive complete indicator.
1110 3
1111 3 PCA0CPM0 = 0x11; // Switch module 0 to negative capture
1112 3 // mode; interrupt enabled for START
1113 3 // detection.
1114 3
1115 3 SURXST = 0; // Reset RX state variable.
1116 3
1117 3
1118 3 break;
1119 3
1120 3 }
1121 2 }
1122 1
1123 1 // Check Transmit interrupt; service if CCF1 is set.
1124 1 else if (CCF1){
1125 2 CCF1 = 0; // Clear interrupt flag
1126 2 switch (SUTXST){
1127 3
1128 3 // State 0: Transmit Initiated.
1129 3 // Here, the user has loaded a byte to transmit into TDR, and set the
1130 3 // module 1 interrupt to initiate the transfer.
1131 3 // - Transmit START bit (drop SW_TX)
1132 3 // - Read PCA0, add one bit time, & store in module 1 capture registers
1133 3 // for first bit.
1134 3 // - Increment TX state variable.
1135 3 case 0:
1136 3 STXBSY = 1; // SW_UART TX?
1137 3 SW_TX = 0; // Drop TX pin as START bit.
1138 3
1139 3 PCA_TEMP = PCA0L; // Read PCA counter value into
1140 3 PCA_TEMP |= (PCA0H << 8); // PCA_TEMP.
1141 3
1142 3 PCA_TEMP += TIME_COUNT; // Add 1 bit time.
1143 3
1144 3 PCA0CPL1 = PCA_TEMP; // Store updated match value into
1145 3 PCA0CPH1 = (PCA_TEMP >> 8); // module 1 capture/compare registers.
1146 3
1147 3 PCA0CPM1 |= 0x48; // Enable module 1 software timer.
1148 3
1149 3 SUTXST++; // Update TX state variable.
1150 3 break;
1151 3
1152 3 // States 1-9: Transmit Bit.
1153 3 // - Output LSB of TDR onto TX
1154 3 // - Shift TDR 1 bit right.
1155 3 // - Shift a '1' into MSB of TDR for STOP bit in State 9.
1156 3 // - Add 1 bit time to module 1 capture register
1157 3 case 1:
1158 3 case 2:
1159 3 case 3:
1160 3 case 4:
1161 3 case 5:
1162 3 case 6:
1163 3 case 7:
1164 3 case 8:
1165 3 case 9:
1166 3
1167 3 SW_TX = (TDR & 0x01); // Output LSB of TDR onto SW_TX pin.
1168 3 TDR >>= 1; // Shift TDR right 1 bit.
C51 COMPILER V7.50 TERM3 04/06/2007 17:58:07 PAGE 20
1169 3 TDR |= 0x80; // Shift '1' into MSB of TDR for
1170 3 // STOP bit in State 9.
1171 3
1172 3 PCA_TEMP = (PCA0CPH1 << 8); // Read module 1 contents into
1173 3 PCA_TEMP |= PCA0CPL1; // PCA_TEMP.
1174 3
1175 3 PCA_TEMP += TIME_COUNT; // Add 1 bit time to PCA_TEMP
1176 3
1177 3 PCA0CPL1 = PCA_TEMP; // Restore PCA0CPL1 and PCA0CPH1
1178 3 PCA0CPH1 = (PCA_TEMP >> 8); // with the updated value
1179 3
1180 3 SUTXST++; // Update TX state variable.
1181 3 break;
1182 3
1183 3 // State 10: Last bit has been transmitted. Transmit STOP bit
1184 3 // and end transfer.
1185 3 // - Transmit STOP bit
1186 3 // - Set TX Complete indicator, clear Busy flag
1187 3 // - Reset TX state
1188 3 // - Prepare module 1 for next transfer.
1189 3 // - Trigger IE7 interrupt if user-level interrupts enabled.
1190 3 case 10:
1191 3
1192 3 STI = 1; // Indicate TX complete.
1193 3 SUTXST = 0; // Reset TX state.
1194 3 SW_TX = 1; // SW_TX should remain high.
1195 3
1196 3 PCA0CPM1 = 0x01; // Disable module 1 software timer; leave
1197 3 // interrupt enabled for next transmit.
1198 3 STXBSY = 0; // SW_UART TX free.
1199 3 break;
1200 3 }
1201 2 }
1202 1
1203 1
1204 1 }
MODULE INFORMATION: STATIC OVERLAYABLE
CODE SIZE = 3124 ----
CONSTANT SIZE = ---- ----
XDATA SIZE = 193 5
PDATA SIZE = ---- ----
DATA SIZE = ---- ----
IDATA SIZE = ---- ----
BIT SIZE = 4 ----
END OF MODULE INFORMATION.
C51 COMPILATION COMPLETE. 0 WARNING(S), 0 ERROR(S)
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