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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 53 | johboh | 1 | /********************************************************************* |
| 2 | * |
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| 3 | * Main application |
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| 4 | * |
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| 5 | ********************************************************************* |
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| 88 | johboh | 6 | * FileName: $HeadURL: https://svn.auml.se/svn/HomeAutomation/trunk/EmbeddedSoftware/PIC/canBoot/Source/Main.c $ |
| 7 | * Last changed: $LastChangedDate: 2006-11-14 11:44:27 +0100 (Tue, 14 Nov 2006) $ |
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| 8 | * By: $LastChangedBy: johboh $ |
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| 9 | * Revision: $Revision: 88 $ |
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| 53 | johboh | 10 | ********************************************************************/ |
| 11 | |||
| 12 | #include <compiler.h> |
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| 13 | #include <stackTasks.h> |
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| 64 | johboh | 14 | #include <CANdefs.h> |
| 15 | #include <CAN.h> |
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| 67 | johboh | 16 | #include <boot.h> |
| 53 | johboh | 17 | |
| 67 | johboh | 18 | /** V E C T O R R E M A P P I N G *******************************************/ |
| 19 | |||
| 20 | #pragma code _HIGH_INTERRUPT_VECTOR = 0x000008 |
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| 21 | void _high_ISR (void) |
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| 22 | { |
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| 23 | _asm goto RM_HIGH_INTERRUPT_VECTOR _endasm |
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| 24 | } |
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| 25 | |||
| 26 | #pragma code _LOW_INTERRUPT_VECTOR = 0x000018 |
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| 27 | void _low_ISR (void) |
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| 28 | { |
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| 29 | _asm goto RM_LOW_INTERRUPT_VECTOR _endasm |
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| 30 | } |
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| 31 | |||
| 32 | #pragma code |
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| 33 | |||
| 34 | |||
| 53 | johboh | 35 | #ifdef USE_CAN |
| 36 | #include <CAN.h> |
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| 37 | #endif |
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| 38 | |||
| 64 | johboh | 39 | static CAN_PROTO_MESSAGE cm; |
| 40 | static BYTE ful=0; |
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| 41 | static DWORD cnt =0; |
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| 42 | |||
| 53 | johboh | 43 | static void mainInit(void); |
| 64 | johboh | 44 | static BOOL canGetPacket(void); |
| 67 | johboh | 45 | void TBLWT_Func(void); |
| 46 | void TBLWTPOSTINC_Func (void); |
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| 47 | void TBLRD_Func(void); |
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| 53 | johboh | 48 | |
| 67 | johboh | 49 | #define TICK_SUB_COUNTER_10MS 312 |
| 50 | #define PACKET_TIMEOUT 14 |
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| 51 | #define BOOTLOADER_INIT_TIMOUT 500 |
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| 64 | johboh | 52 | |
| 67 | johboh | 53 | DWORD tickCounter = 0; |
| 54 | DWORD tickSubCounter = 0; |
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| 55 | |||
| 56 | DWORD tickGet(void); |
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| 57 | |||
| 53 | johboh | 58 | void main() |
| 59 | { |
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| 64 | johboh | 60 | static PROGRAM_STATE pgs = pgsWATING_START; |
| 67 | johboh | 61 | static DWORD t = 0; |
| 64 | johboh | 62 | static WORD programmerSid=0; |
| 63 | |||
| 64 | static BYTE errMsg = ERR_NO_ERROR; |
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| 65 | static PROGRAM_STATE afterAckPgs = pgsWATING_START; |
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| 66 | static DWORD pgmAddress = 0; |
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| 67 | static BYTE bytesReceived = 0; |
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| 53 | johboh | 68 | |
| 67 | johboh | 69 | DWORD tBoot; |
| 70 | |||
| 71 | static BYTE pgmData[64]; |
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| 72 | |||
| 64 | johboh | 73 | static BYTE tmp; |
| 74 | |||
| 53 | johboh | 75 | // Inits |
| 76 | mainInit(); |
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| 77 | |||
| 78 | #ifdef USE_CAN |
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| 79 | canInit(); |
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| 80 | #endif |
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| 81 | |||
| 67 | johboh | 82 | tBoot = tickGet(); |
| 64 | johboh | 83 | |
| 84 | |||
| 85 | for(;;) |
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| 53 | johboh | 86 | { |
| 67 | johboh | 87 | BYTE i; |
| 64 | johboh | 88 | CAN_PROTO_MESSAGE outCm; |
| 89 | BOOL hasPacket = canGetPacket(); |
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| 90 | |||
| 67 | johboh | 91 | tickSubCounter++; |
| 92 | if (tickSubCounter>TICK_SUB_COUNTER_10MS) |
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| 64 | johboh | 93 | { |
| 67 | johboh | 94 | tickCounter++; |
| 95 | tickSubCounter=0; |
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| 88 | johboh | 96 | ClrWdt(); |
| 64 | johboh | 97 | } |
| 98 | |||
| 99 | switch(pgs) |
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| 100 | { |
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| 101 | case pgsWATING_START: |
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| 102 | // Check if there is bootloader start packet |
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| 79 | johboh | 103 | if (hasPacket==TRUE && cm.funct==FUNCT_BOOTLOADER && cm.funcc==FUNCC_BOOT_INIT && ((((unsigned int)cm.data[RID_HIGH_INDEX])<<8)+cm.data[RID_LOW_INDEX])==MY_ID && cm.nid==MY_NID) |
| 64 | johboh | 104 | { |
| 105 | // Has new start packet |
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| 106 | pgmAddress = (((DWORD)cm.data[ADDRU_INDEX])<<16)+(((DWORD)cm.data[ADDRH_INDEX])<<8)+((DWORD)cm.data[ADDRL_INDEX]); |
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| 107 | programmerSid = cm.sid; |
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| 108 | t = tickGet(); |
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| 109 | errMsg = ERR_NO_ERROR; |
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| 110 | afterAckPgs = pgsWAIT_FIRST_PGM_PACKET; |
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| 111 | pgs = pgsSEND_ACK; |
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| 67 | johboh | 112 | // save pgm adress. |
| 113 | |||
| 64 | johboh | 114 | } |
| 115 | |||
| 67 | johboh | 116 | // Bootloader timeout |
| 117 | if ((tickGet()-tBoot)>BOOTLOADER_INIT_TIMOUT) |
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| 118 | { |
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| 119 | pgs = pgsDONE; |
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| 120 | } |
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| 64 | johboh | 121 | break; |
| 122 | |||
| 123 | case pgsSEND_ACK: |
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| 124 | // send ack |
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| 125 | outCm.funct = FUNCT_BOOTLOADER; |
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| 126 | outCm.funcc = FUNCC_BOOT_ACK; |
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| 127 | outCm.nid = MY_NID; |
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| 128 | outCm.sid = MY_ID; |
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| 129 | outCm.data_length = 8; |
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| 130 | outCm.data[ERR_INDEX] = errMsg; |
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| 131 | t = tickGet(); |
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| 132 | pgs = afterAckPgs; |
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| 133 | |||
| 134 | while(!canSendMessage(outCm,PRIO_HIGH)); |
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| 135 | break; |
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| 136 | |||
| 137 | |||
| 138 | case pgsWAIT_FIRST_PGM_PACKET: |
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| 139 | // wait for first pgm packet. |
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| 140 | if ((tickGet()-t)>PACKET_TIMEOUT) |
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| 141 | { |
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| 142 | // Timeout, resend ack. |
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| 143 | errMsg = ERR_NO_ERROR; |
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| 144 | afterAckPgs = pgsWAIT_FIRST_PGM_PACKET; |
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| 145 | pgs = pgsSEND_ACK; |
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| 146 | } |
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| 147 | |||
| 148 | // If programming packet... |
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| 67 | johboh | 149 | if (hasPacket==TRUE && cm.funct==FUNCT_BOOTLOADER && (cm.funcc & 0x3)==FUNCC_BOOT_PGM && cm.nid==MY_NID && cm.sid==programmerSid) |
| 64 | johboh | 150 | { |
| 67 | johboh | 151 | BYTE localIndex = (BYTE)((cm.funcc & 0x1C)>>2)*8; |
| 152 | |||
| 64 | johboh | 153 | // Save bytes in memory, setup start adress etc.. |
| 67 | johboh | 154 | bytesReceived = 8; |
| 155 | pgmData[localIndex+0]=cm.data[0]; pgmData[localIndex+1]=cm.data[1]; pgmData[localIndex+2]=cm.data[2]; pgmData[localIndex+3]=cm.data[3]; |
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| 156 | pgmData[localIndex+4]=cm.data[4]; pgmData[localIndex+5]=cm.data[5]; pgmData[localIndex+6]=cm.data[6]; pgmData[localIndex+7]=cm.data[7]; |
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| 157 | |||
| 64 | johboh | 158 | pgs = pgsWAIT_PGM_PACKET; |
| 159 | } |
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| 160 | |||
| 161 | |||
| 162 | break; |
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| 163 | |||
| 164 | |||
| 165 | case pgsWAIT_PGM_PACKET: |
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| 166 | |||
| 167 | |||
| 168 | // If programming packet... |
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| 67 | johboh | 169 | if (hasPacket==TRUE && cm.funct==FUNCT_BOOTLOADER && (cm.funcc & 0x3)==FUNCC_BOOT_PGM && cm.nid==MY_NID && cm.sid==programmerSid) |
| 64 | johboh | 170 | { |
| 67 | johboh | 171 | BYTE localIndex = (BYTE)((cm.funcc & 0x1C)>>2)*8; |
| 64 | johboh | 172 | // Save bytes in memory, inc received bytes. |
| 67 | johboh | 173 | pgmData[localIndex+0]=cm.data[0]; pgmData[localIndex+1]=cm.data[1]; pgmData[localIndex+2]=cm.data[2]; pgmData[localIndex+3]=cm.data[3]; |
| 174 | pgmData[localIndex+4]=cm.data[4]; pgmData[localIndex+5]=cm.data[5]; pgmData[localIndex+6]=cm.data[6]; pgmData[localIndex+7]=cm.data[7]; |
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| 175 | |||
| 64 | johboh | 176 | bytesReceived += 8; |
| 177 | pgs = pgsWAIT_PGM_PACKET; |
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| 178 | } |
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| 179 | |||
| 180 | // If adress packet (control packet).. |
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| 181 | if (hasPacket==TRUE && cm.funct==FUNCT_BOOTLOADER && cm.funcc==FUNCC_BOOT_ADDR && cm.nid==MY_NID && cm.sid==programmerSid) |
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| 182 | { |
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| 183 | // Send ack and goto wait first packet. |
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| 67 | johboh | 184 | // save adress. |
| 64 | johboh | 185 | errMsg = ERR_NO_ERROR; |
| 186 | afterAckPgs = pgsWAIT_FIRST_PGM_PACKET; |
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| 187 | pgs = pgsSEND_ACK; |
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| 188 | } |
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| 189 | |||
| 190 | // If end packet... |
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| 191 | if (hasPacket==TRUE && cm.funct==FUNCT_BOOTLOADER && cm.funcc==FUNCC_BOOT_DONE && cm.nid==MY_NID && cm.sid==programmerSid) |
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| 192 | { |
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| 193 | // write program. |
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| 194 | // If no bytes received at all, assume end. |
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| 195 | // If not 64 bytes received, send error ack and wait for first packet. |
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| 196 | // If 64, write. |
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| 197 | |||
| 198 | if (bytesReceived==0) |
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| 199 | { |
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| 200 | // No received, done. |
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| 201 | errMsg = ERR_NO_ERROR; |
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| 202 | afterAckPgs = pgsDONE; |
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| 203 | pgs = pgsSEND_ACK; |
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| 204 | } |
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| 205 | else if (bytesReceived!=64) |
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| 206 | { |
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| 207 | errMsg = ERR_ERROR; |
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| 208 | afterAckPgs = pgsWAIT_FIRST_PGM_PACKET; |
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| 209 | pgs = pgsSEND_ACK; |
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| 210 | } |
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| 211 | else |
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| 212 | { |
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| 213 | pgs = pgsWRITE_PROGRAM; |
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| 214 | afterAckPgs = pgsDONE; |
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| 215 | } |
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| 216 | } |
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| 217 | |||
| 218 | // If bytes received 64, write.. |
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| 219 | if (bytesReceived==64) |
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| 220 | { |
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| 221 | LED0_IO=~LED0_IO; |
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| 222 | pgs = pgsWRITE_PROGRAM; |
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| 223 | afterAckPgs = pgsWAIT_PGM_PACKET; |
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| 224 | // TODO! Send ack more than once.. |
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| 225 | } |
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| 226 | |||
| 227 | |||
| 228 | break; |
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| 229 | |||
| 230 | |||
| 231 | case pgsWRITE_PROGRAM: |
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| 232 | |||
| 88 | johboh | 233 | ClrWdt(); |
| 67 | johboh | 234 | |
| 64 | johboh | 235 | // Write program and send ack. |
| 67 | johboh | 236 | |
| 68 | johboh | 237 | // Check addr limit |
| 238 | if (pgmAddress<RM_RESET_VECTOR) |
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| 239 | { |
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| 240 | errMsg = ERR_ERROR; |
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| 241 | pgs = pgsSEND_ACK; |
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| 242 | //Not allowed to write here! |
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| 243 | |||
| 244 | } |
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| 245 | |||
| 67 | johboh | 246 | //Load Table pointer registers with base address to erase. |
| 247 | TBLPTRU = (BYTE)((pgmAddress & 0xFF0000)>>16); |
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| 248 | TBLPTRH = (BYTE)((pgmAddress & 0xFF00)>>8); |
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| 249 | TBLPTRL = (BYTE)(pgmAddress & 0xFF); |
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| 250 | |||
| 251 | // point to Flash program memory |
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| 252 | EECON1bits.EEPGD = 1; |
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| 253 | // access Flash program memory |
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| 254 | EECON1bits.CFGS = 0; |
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| 255 | // enable write to memory |
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| 256 | EECON1bits.WREN = 1; |
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| 257 | // enable Row Erase operation |
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| 258 | EECON1bits.FREE = 1; |
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| 259 | // disable interrupts |
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| 260 | INTCONbits.GIE = 0; |
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| 261 | |||
| 262 | // Do it! |
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| 263 | EECON2 = 0x55; |
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| 264 | EECON2 = 0xAA; |
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| 265 | EECON1bits.WR = 1; |
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| 266 | |||
| 267 | // enable interrupts |
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| 268 | INTCONbits.GIE = 1; |
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| 269 | |||
| 270 | //Load Table pointer registers with base address to program. |
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| 271 | TBLPTRU = (BYTE)((pgmAddress & 0xFF0000)>>16); |
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| 272 | TBLPTRH = (BYTE)((pgmAddress & 0xFF00)>>8); |
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| 273 | TBLPTRL = (BYTE)(pgmAddress & 0xFF); |
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| 274 | |||
| 275 | // Load bytes |
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| 276 | for(i=0;i<63;i++) |
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| 277 | { |
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| 278 | TABLAT=pgmData[i]; |
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| 279 | TBLWTPOSTINC_Func(); |
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| 280 | } |
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| 281 | TABLAT=pgmData[63]; |
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| 282 | TBLWT_Func(); |
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| 283 | |||
| 284 | |||
| 285 | // point to Flash program memory |
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| 286 | EECON1bits.EEPGD = 1; |
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| 287 | // access Flash program memory |
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| 288 | EECON1bits.CFGS = 0; |
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| 289 | // enable write to memory |
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| 290 | EECON1bits.WREN = 1; |
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| 291 | // disable interrupts |
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| 292 | INTCONbits.GIE = 0; |
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| 293 | |||
| 294 | // Do it! |
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| 295 | EECON2 = 0x55; |
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| 296 | EECON2 = 0xAA; |
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| 297 | EECON1bits.WR = 1; |
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| 298 | |||
| 299 | // enable interrupts |
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| 300 | INTCONbits.GIE = 1; |
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| 301 | |||
| 302 | // disable write to memory |
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| 303 | EECON1bits.WREN = 0; |
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| 304 | |||
| 64 | johboh | 305 | pgmAddress += 64; |
| 306 | bytesReceived = 0; |
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| 307 | errMsg = ERR_NO_ERROR; |
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| 308 | pgs = pgsSEND_ACK; |
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| 309 | |||
| 310 | break; |
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| 311 | |||
| 312 | |||
| 313 | case pgsDONE: |
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| 67 | johboh | 314 | _asm goto RM_RESET_VECTOR _endasm |
| 64 | johboh | 315 | break; |
| 316 | |||
| 317 | |||
| 318 | |||
| 319 | |||
| 320 | default: |
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| 321 | pgs = pgsWATING_START; |
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| 322 | break; |
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| 323 | } |
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| 324 | |||
| 325 | |||
| 53 | johboh | 326 | } |
| 327 | } |
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| 328 | |||
| 329 | |||
| 330 | /* |
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| 331 | * Function: mainInit |
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| 332 | * |
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| 333 | * Input: none |
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| 334 | * Output: none |
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| 335 | * Pre-conditions: none |
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| 336 | * Affects: Se code |
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| 337 | * Depends: none. |
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| 338 | */ |
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| 339 | void mainInit() |
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| 340 | { |
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| 341 | LED0_TRIS=0; |
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| 342 | |||
| 343 | // Enable internal PORTB pull-ups |
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| 344 | INTCON2bits.RBPU = 0; |
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| 345 | |||
| 346 | // Enable Interrupts |
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| 347 | INTCONbits.GIEH = 1; |
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| 348 | INTCONbits.GIEL = 1; |
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| 349 | |||
| 350 | // Enable interrupt prirority |
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| 351 | RCONbits.IPEN=1; |
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| 352 | |||
| 353 | |||
| 354 | } |
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| 355 | |||
| 64 | johboh | 356 | |
| 357 | |||
| 358 | /// CAN------------------------------------------------------- |
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| 359 | |||
| 360 | |||
| 361 | #ifdef USE_CAN |
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| 362 | |||
| 363 | |||
| 53 | johboh | 364 | /* |
| 64 | johboh | 365 | * Function: canInit |
| 53 | johboh | 366 | * |
| 64 | johboh | 367 | * Input: none |
| 53 | johboh | 368 | * Output: none |
| 64 | johboh | 369 | * Pre-conditions: none |
| 370 | * Affects: Changes can registers. |
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| 53 | johboh | 371 | * Depends: none. |
| 372 | */ |
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| 64 | johboh | 373 | void canInit() |
| 53 | johboh | 374 | { |
| 64 | johboh | 375 | CANCON = 0x80; //request config mode |
| 376 | while ((CANSTAT & 0xE0) != 0x80 ); //wait for config mode request |
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| 377 | |||
| 378 | // BAUD AND TQS |
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| 379 | |||
| 380 | BRGCON1=0; |
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| 381 | |||
| 382 | // Sync_Seq = 2 x TQ = 1 |
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| 383 | BRGCON1bits.SJW1=0; |
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| 384 | BRGCON1bits.SJW0=1; |
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| 385 | |||
| 386 | // Setting BRP. |
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| 387 | BRGCON1=BRGCON1|CAN_BRP; |
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| 388 | |||
| 389 | // Maximum PHEG1 |
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| 390 | BRGCON2bits.SEG2PHTS = 1; |
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| 391 | |||
| 392 | // Phase_Seg1 = 2 x TQ = 1 |
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| 393 | BRGCON2bits.SEG1PH2 = 0; |
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| 394 | BRGCON2bits.SEG1PH1 = 0; |
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| 395 | BRGCON2bits.SEG1PH0 = 1; |
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| 396 | |||
| 397 | // Prop_Seq = 2 x TQ = 1 |
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| 398 | BRGCON2bits.PRSEG2 = 0; |
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| 399 | BRGCON2bits.PRSEG1 = 0; |
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| 400 | BRGCON2bits.PRSEG0 = 1; |
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| 401 | |||
| 402 | // Enableing bus wake-up |
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| 403 | BRGCON3bits.WAKDIS = 0; |
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| 404 | |||
| 405 | // Dont use filter when wakeup |
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| 406 | BRGCON3bits.WAKFIL = 0; |
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| 407 | |||
| 408 | // Phase_Seg2 = 2 x TQ = 1 |
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| 409 | BRGCON3bits.SEG2PH2 = 0; |
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| 410 | BRGCON3bits.SEG2PH1 = 0; |
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| 411 | BRGCON3bits.SEG2PH0 = 1; |
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| 412 | |||
| 413 | ECANCON=0; |
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| 414 | ECANCONbits.MDSEL1 = 0; |
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| 415 | ECANCONbits.MDSEL0 = 1; |
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| 416 | |||
| 417 | |||
| 418 | // FILTERS AND MASKS |
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| 419 | RXB0CONbits.RXM1=1; |
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| 420 | RXB0CONbits.RXM0=0; |
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| 421 | |||
| 422 | |||
| 423 | // INTERRUPTS |
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| 424 | |||
| 425 | // Diable transmit interrupt |
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| 426 | TXBIE = 0; |
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| 427 | |||
| 428 | //rx no interrupt |
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| 429 | PIR3 = 0; |
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| 430 | PIE3 = 0; |
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| 431 | |||
| 432 | |||
| 433 | // Programmable no buffers interrupt |
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| 434 | BIE0 = 0x00; |
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| 435 | |||
| 436 | |||
| 437 | //loopback mode or not |
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| 438 | #ifdef CAN_LOOPBACK_MODE |
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| 439 | CANCON = 0x40;//request loopback mode |
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| 440 | while ((CANSTAT & 0xE0) != 0x40 );//wait for loopback mode |
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| 441 | #else |
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| 442 | CANCON = 0x00;//request normal mode |
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| 443 | while ((CANSTAT & 0xE0) != 0x00 );//wait for normal mode |
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| 444 | #endif |
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| 445 | |||
| 53 | johboh | 446 | } |
| 447 | |||
| 64 | johboh | 448 | |
| 449 | |||
| 450 | |||
| 451 | /* |
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| 452 | * Function: canGetPacket |
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| 453 | * |
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| 454 | * Input: none |
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| 455 | * Output: none |
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| 456 | * Pre-conditions: a call to canISR and an packet is available and banked to RXB0 |
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| 457 | * Affects: Calls canParse() function in main for parsing received packet. |
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| 458 | * Depends: none. |
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| 459 | */ |
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| 460 | BOOL canGetPacket() |
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| 461 | { |
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| 462 | |||
| 463 | // Get which buffer that is ful. |
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| 464 | if (RXB0CONbits.RXFUL) { ECANCON=(ECANCON&0b00000)|0b10000; } |
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| 465 | else if (RXB1CONbits.RXFUL) { ECANCON=(ECANCON&0b00000)|0b10001; } |
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| 466 | else if (B0CONbits.RXFUL) { ECANCON=(ECANCON&0b00000)|0b10010; } |
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| 467 | else if (B1CONbits.RXFUL) { ECANCON=(ECANCON&0b00000)|0b10011; } |
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| 468 | else if (B2CONbits.RXFUL) { ECANCON=(ECANCON&0b00000)|0b10100; } |
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| 469 | else if (B3CONbits.RXFUL) { ECANCON=(ECANCON&0b00000)|0b10101; } |
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| 470 | else if (B4CONbits.RXFUL) { ECANCON=(ECANCON&0b00000)|0b10110; } |
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| 471 | else if (B5CONbits.RXFUL) { ECANCON=(ECANCON&0b00000)|0b10111; } |
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| 472 | else return FALSE; |
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| 473 | |||
| 474 | |||
| 475 | //RXB0SIDH 28 27 26 25 24 23 22 21 |
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| 476 | //RXB0SIDL 20 19 18 xx xx xx 17 16 |
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| 477 | //RXB0EIDH 15 14 13 12 11 10 09 08 |
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| 478 | //RXB0EIDL 07 06 05 04 03 02 01 00 |
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| 479 | |||
| 480 | //funct xx xx xx xx 28 27 26 25 |
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| 481 | //funcc xx xx xx xx xx xx 24 23 22 21 20 19 18 17 16 15 |
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| 482 | //nid xx xx 14 13 12 11 10 09 |
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| 483 | //sid xx xx xx xx xx xx xx 08 07 06 05 04 03 02 01 00 |
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| 484 | |||
| 485 | |||
| 486 | cm.funct=((RXB0SIDH & 0xF0)>>4); |
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| 487 | cm.funcc=(((WORD)(RXB0SIDH & 0x0F))<<6)+(((WORD)(RXB0SIDL & 0xE0))>>2)+(((WORD)(RXB0SIDL & 0x03))<<1)+(((WORD)(RXB0EIDH & 0x80))>>7); |
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| 488 | cm.nid=((RXB0EIDH & 0x7E)>>1); |
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| 489 | cm.sid=(((WORD)(RXB0EIDH & 0x01))<<8)+RXB0EIDL; |
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| 490 | |||
| 491 | |||
| 492 | // Data length |
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| 493 | cm.data_length=(RXB0DLCbits.DLC3<<3)+(RXB0DLCbits.DLC2<<2)+(RXB0DLCbits.DLC1<<1)+RXB0DLCbits.DLC0; |
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| 494 | |||
| 495 | // Data one bye one, for speed |
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| 496 | cm.data[0]=RXB0D0; cm.data[1]=RXB0D1; |
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| 497 | cm.data[2]=RXB0D2; cm.data[3]=RXB0D3; |
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| 498 | cm.data[4]=RXB0D4; cm.data[5]=RXB0D5; |
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| 499 | cm.data[6]=RXB0D6; cm.data[7]=RXB0D7; |
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| 500 | |||
| 501 | // Clear ful status |
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| 502 | RXB0CONbits.RXFUL=0; |
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| 503 | |||
| 504 | return TRUE; |
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| 505 | } |
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| 506 | |||
| 507 | |||
| 508 | /* |
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| 509 | * Function: canSendMessage |
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| 510 | * |
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| 511 | * Input: CAN_MESSAGE to send |
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| 512 | * Output: True if packet scheduled sucess, false otherwise. |
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| 513 | * Pre-conditions: canInit |
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| 514 | * Affects: .. |
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| 515 | * Depends: .. |
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| 516 | */ |
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| 517 | BOOL canSendMessage(CAN_PROTO_MESSAGE cm,CAN_PRIORITY prio) |
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| 518 | { |
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| 519 | |||
| 520 | if ( TXB0CONbits.TXREQ == 0 ) { ECANCON=(ECANCON&0b00000)|0b00011; } |
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| 521 | if ( TXB1CONbits.TXREQ == 0 ) { ECANCON=(ECANCON&0b00000)|0b00100; } |
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| 522 | if ( TXB2CONbits.TXREQ == 0 ) { ECANCON=(ECANCON&0b00000)|0b00101; } |
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| 523 | // None of the transmit buffers were empty. |
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| 524 | else { return FALSE;} |
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| 525 | |||
| 526 | if (prio<0 || prio>3) prio = 0; |
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| 527 | |||
| 528 | |||
| 529 | //RXB0SIDH 28 27 26 25 24 23 22 21 |
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| 530 | //RXB0SIDL 20 19 18 xx xx xx 17 16 |
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| 531 | //RXB0EIDH 15 14 13 12 11 10 09 08 |
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| 532 | //RXB0EIDL 07 06 05 04 03 02 01 00 |
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| 533 | |||
| 534 | //funct xx xx xx xx 28 27 26 25 |
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| 535 | //funcc xx xx xx xx xx xx 24 23 22 21 20 19 18 17 16 15 |
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| 536 | //nid xx xx 14 13 12 11 10 09 |
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| 537 | //sid xx xx xx xx xx xx xx 08 07 06 05 04 03 02 01 00 |
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| 538 | |||
| 539 | RXB0SIDH = (BYTE)((cm.funct & 0x0F)<<4)+(BYTE)((cm.funcc & 0x03C0)>>6); |
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| 540 | RXB0SIDL = (BYTE)((cm.funcc & 0x003F)<<2)+(BYTE)((cm.funcc & 0x0006)>>1); |
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| 541 | RXB0EIDH = (BYTE)((cm.funcc & 0x0001)<<7)+(BYTE)((cm.nid & 0x3F)<<1)+(BYTE)((cm.sid & 0x0100)>>8); |
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| 542 | RXB0EIDL = (BYTE)((cm.sid & 0x00FF)); |
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| 543 | |||
| 544 | // Data length |
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| 545 | RXB0DLC = 0; |
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| 546 | if (cm.data_length>8) RXB0DLC=8; else RXB0DLC=cm.data_length; |
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| 547 | |||
| 88 | johboh | 548 | // NOT Remote request |
| 549 | _asm |
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| 550 | bcf RXB0DLC, 6, 0 |
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| 551 | _endasm |
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| 64 | johboh | 552 | |
| 88 | johboh | 553 | |
| 64 | johboh | 554 | // Data one bye one, for speed |
| 555 | RXB0D0=cm.data[0]; RXB0D1=cm.data[1]; |
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| 556 | RXB0D2=cm.data[2]; RXB0D3=cm.data[3]; |
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| 557 | RXB0D4=cm.data[4]; RXB0D5=cm.data[5]; |
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| 558 | RXB0D6=cm.data[6]; RXB0D7=cm.data[7]; |
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| 559 | |||
| 560 | // set extended or not |
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| 561 | RXB0SIDLbits.EXID=1; |
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| 562 | |||
| 563 | // Priority |
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| 564 | RXB0CON = (RXB0CON & 0b11111100) | prio; |
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| 565 | |||
| 566 | // mark as redy to transmit |
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| 567 | _asm |
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| 568 | bsf RXB0CON, 3, 0 |
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| 569 | _endasm |
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| 570 | |||
| 571 | return TRUE; |
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| 572 | |||
| 573 | } |
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| 574 | |||
| 575 | |||
| 576 | |||
| 577 | #endif //USE_CAN |
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| 67 | johboh | 578 | |
| 579 | |||
| 580 | |||
| 581 | |||
| 582 | void TBLRD_Func() |
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| 583 | { |
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| 584 | _asm |
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| 585 | TBLRD |
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| 586 | _endasm |
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| 587 | } |
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| 588 | |||
| 589 | void TBLWT_Func() |
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| 590 | { |
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| 591 | _asm |
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| 592 | TBLWT |
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| 593 | _endasm |
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| 594 | } |
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| 595 | |||
| 596 | |||
| 597 | void TBLWTPOSTINC_Func (void){ |
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| 598 | _asm |
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| 599 | TBLWTPOSTINC |
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| 600 | _endasm |
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| 601 | } |
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| 602 | |||
| 603 | DWORD tickGet() |
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| 604 | { |
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| 605 | return tickCounter; |
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| 606 | } |
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| 607 | |||
| 608 | |||
| 609 | #pragma code user = RM_RESET_VECTOR |