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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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| 6 | * FileName: Main.c |
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| 7 | * |
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| 8 | * Author Date Comment |
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| 9 | *~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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| 10 | * Johan Böhlin 21-10-06 Original (Rev 1.0) |
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| 11 | ********************************************************************/ |
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| 12 | |||
| 13 | #include <compiler.h> |
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| 14 | #include <stackTasks.h> |
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| 64 | johboh | 15 | #include <CANdefs.h> |
| 16 | #include <CAN.h> |
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| 17 | #include <Tick.h> |
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| 53 | johboh | 18 | |
| 19 | #ifdef USE_CAN |
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| 20 | #include <CAN.h> |
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| 21 | #endif |
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| 22 | |||
| 64 | johboh | 23 | static CAN_PROTO_MESSAGE cm; |
| 24 | static BYTE ful=0; |
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| 25 | static DWORD cnt =0; |
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| 26 | |||
| 53 | johboh | 27 | static void mainInit(void); |
| 64 | johboh | 28 | static BOOL canGetPacket(void); |
| 53 | johboh | 29 | |
| 64 | johboh | 30 | #define PACKET_TIMEOUT (TICK_SECOND/20) |
| 31 | #define BOOTLOADER_INIT_TIMOUT (TICK_SECOND*5) |
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| 32 | |||
| 53 | johboh | 33 | void main() |
| 34 | { |
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| 64 | johboh | 35 | static PROGRAM_STATE pgs = pgsWATING_START; |
| 36 | static TICK t = 0; |
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| 37 | static WORD programmerSid=0; |
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| 38 | |||
| 39 | static BYTE errMsg = ERR_NO_ERROR; |
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| 40 | static PROGRAM_STATE afterAckPgs = pgsWATING_START; |
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| 41 | static DWORD pgmAddress = 0; |
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| 42 | static BYTE bytesReceived = 0; |
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| 53 | johboh | 43 | |
| 64 | johboh | 44 | static BYTE tmp; |
| 45 | |||
| 53 | johboh | 46 | // Inits |
| 47 | |||
| 48 | mainInit(); |
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| 49 | |||
| 50 | #ifdef USE_CAN |
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| 51 | canInit(); |
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| 52 | #endif |
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| 53 | |||
| 54 | |||
| 64 | johboh | 55 | |
| 56 | tickInit(); |
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| 57 | |||
| 58 | |||
| 59 | |||
| 60 | for(;;) |
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| 53 | johboh | 61 | { |
| 64 | johboh | 62 | CAN_PROTO_MESSAGE outCm; |
| 63 | BOOL hasPacket = canGetPacket(); |
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| 64 | |||
| 65 | if (hasPacket) |
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| 66 | { |
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| 67 | tmp=5; |
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| 68 | } |
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| 69 | |||
| 70 | switch(pgs) |
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| 71 | { |
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| 72 | case pgsWATING_START: |
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| 73 | // Check if there is bootloader start packet |
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| 74 | if (hasPacket==TRUE && cm.funct==FUNCT_BOOTLOADER && cm.funcc==FUNCC_BOOT_INIT && cm.data[RID_INDEX]==MY_ID && cm.nid==MY_NID) |
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| 75 | { |
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| 76 | // Has new start packet |
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| 77 | pgmAddress = (((DWORD)cm.data[ADDRU_INDEX])<<16)+(((DWORD)cm.data[ADDRH_INDEX])<<8)+((DWORD)cm.data[ADDRL_INDEX]); |
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| 78 | programmerSid = cm.sid; |
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| 79 | t = tickGet(); |
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| 80 | errMsg = ERR_NO_ERROR; |
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| 81 | afterAckPgs = pgsWAIT_FIRST_PGM_PACKET; |
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| 82 | pgs = pgsSEND_ACK; |
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| 83 | } |
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| 84 | |||
| 85 | // TODO TIMEOUT! |
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| 86 | // tBoot = tickGet(); |
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| 87 | // if ((tickGet()-tBoot)>BOOTLOADER_INIT_TIMOUT) goto userprgm; |
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| 88 | break; |
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| 89 | |||
| 90 | case pgsSEND_ACK: |
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| 91 | // send ack |
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| 92 | outCm.funct = FUNCT_BOOTLOADER; |
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| 93 | outCm.funcc = FUNCC_BOOT_ACK; |
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| 94 | outCm.nid = MY_NID; |
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| 95 | outCm.sid = MY_ID; |
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| 96 | outCm.data_length = 8; |
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| 97 | outCm.remote_request = FALSE; |
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| 98 | outCm.data[ERR_INDEX] = errMsg; |
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| 99 | t = tickGet(); |
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| 100 | pgs = afterAckPgs; |
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| 101 | |||
| 102 | while(!canSendMessage(outCm,PRIO_HIGH)); |
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| 103 | break; |
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| 104 | |||
| 105 | |||
| 106 | case pgsWAIT_FIRST_PGM_PACKET: |
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| 107 | // wait for first pgm packet. |
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| 108 | if ((tickGet()-t)>PACKET_TIMEOUT) |
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| 109 | { |
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| 110 | // Timeout, resend ack. |
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| 111 | errMsg = ERR_NO_ERROR; |
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| 112 | afterAckPgs = pgsWAIT_FIRST_PGM_PACKET; |
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| 113 | pgs = pgsSEND_ACK; |
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| 114 | } |
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| 115 | |||
| 116 | // If programming packet... |
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| 117 | if (hasPacket==TRUE && cm.funct==FUNCT_BOOTLOADER && cm.funcc==FUNCC_BOOT_PGM && cm.nid==MY_NID && cm.sid==programmerSid) |
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| 118 | { |
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| 119 | // Save bytes in memory, setup start adress etc.. |
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| 120 | bytesReceived = 8; |
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| 121 | pgs = pgsWAIT_PGM_PACKET; |
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| 122 | } |
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| 123 | |||
| 124 | |||
| 125 | break; |
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| 126 | |||
| 127 | |||
| 128 | case pgsWAIT_PGM_PACKET: |
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| 129 | |||
| 130 | |||
| 131 | // If programming packet... |
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| 132 | if (hasPacket==TRUE && cm.funct==FUNCT_BOOTLOADER && cm.funcc==FUNCC_BOOT_PGM && cm.nid==MY_NID && cm.sid==programmerSid) |
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| 133 | { |
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| 134 | // Save bytes in memory, inc received bytes. |
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| 135 | bytesReceived += 8; |
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| 136 | pgs = pgsWAIT_PGM_PACKET; |
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| 137 | } |
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| 138 | |||
| 139 | // If adress packet (control packet).. |
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| 140 | if (hasPacket==TRUE && cm.funct==FUNCT_BOOTLOADER && cm.funcc==FUNCC_BOOT_ADDR && cm.nid==MY_NID && cm.sid==programmerSid) |
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| 141 | { |
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| 142 | // Send ack and goto wait first packet. |
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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 end packet... |
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| 149 | if (hasPacket==TRUE && cm.funct==FUNCT_BOOTLOADER && cm.funcc==FUNCC_BOOT_DONE && cm.nid==MY_NID && cm.sid==programmerSid) |
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| 150 | { |
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| 151 | // write program. |
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| 152 | // If no bytes received at all, assume end. |
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| 153 | // If not 64 bytes received, send error ack and wait for first packet. |
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| 154 | // If 64, write. |
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| 155 | |||
| 156 | if (bytesReceived==0) |
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| 157 | { |
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| 158 | // No received, done. |
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| 159 | errMsg = ERR_NO_ERROR; |
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| 160 | afterAckPgs = pgsDONE; |
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| 161 | pgs = pgsSEND_ACK; |
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| 162 | } |
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| 163 | else if (bytesReceived!=64) |
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| 164 | { |
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| 165 | errMsg = ERR_ERROR; |
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| 166 | afterAckPgs = pgsWAIT_FIRST_PGM_PACKET; |
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| 167 | pgs = pgsSEND_ACK; |
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| 168 | } |
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| 169 | else |
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| 170 | { |
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| 171 | pgs = pgsWRITE_PROGRAM; |
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| 172 | afterAckPgs = pgsDONE; |
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| 173 | } |
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| 174 | } |
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| 175 | |||
| 176 | // If bytes received 64, write.. |
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| 177 | if (bytesReceived==64) |
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| 178 | { |
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| 179 | LED0_IO=~LED0_IO; |
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| 180 | pgs = pgsWRITE_PROGRAM; |
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| 181 | afterAckPgs = pgsWAIT_PGM_PACKET; |
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| 182 | // TODO! Send ack more than once.. |
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| 183 | } |
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| 184 | |||
| 185 | |||
| 186 | break; |
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| 187 | |||
| 188 | |||
| 189 | case pgsWRITE_PROGRAM: |
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| 190 | |||
| 191 | // Write program and send ack. |
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| 192 | pgmAddress += 64; |
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| 193 | bytesReceived = 0; |
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| 194 | errMsg = ERR_NO_ERROR; |
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| 195 | pgs = pgsSEND_ACK; |
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| 196 | |||
| 197 | break; |
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| 198 | |||
| 199 | |||
| 200 | case pgsDONE: |
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| 201 | // Goto main program. |
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| 202 | if ((tickGet()-t)>=TICK_SECOND/4) |
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| 203 | { |
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| 204 | |||
| 205 | LED0_IO=~LED0_IO; |
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| 206 | t=tickGet(); |
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| 207 | } |
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| 208 | break; |
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| 209 | |||
| 210 | |||
| 211 | |||
| 212 | |||
| 213 | default: |
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| 214 | pgs = pgsWATING_START; |
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| 215 | break; |
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| 216 | } |
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| 217 | |||
| 218 | |||
| 53 | johboh | 219 | } |
| 220 | } |
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| 221 | |||
| 222 | |||
| 223 | #pragma interruptlow HighISR |
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| 224 | void HighISR(void) |
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| 225 | { |
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| 64 | johboh | 226 | tickUpdate(); |
| 53 | johboh | 227 | } |
| 228 | #pragma code highVector=0x08 |
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| 229 | void HighVector (void) |
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| 230 | { |
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| 231 | _asm goto HighISR _endasm |
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| 232 | } |
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| 233 | #pragma code // Return to default code section |
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| 234 | |||
| 235 | |||
| 236 | |||
| 237 | #pragma interruptlow LowISR |
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| 238 | void LowISR(void) |
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| 239 | { |
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| 240 | |||
| 241 | } |
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| 242 | #pragma code lowVector=0x18 |
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| 243 | void LowVector (void) |
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| 244 | { |
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| 245 | _asm goto LowISR _endasm |
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| 246 | } |
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| 247 | #pragma code // Return to default code section |
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| 248 | |||
| 249 | |||
| 250 | /* |
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| 251 | * Function: mainInit |
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| 252 | * |
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| 253 | * Input: none |
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| 254 | * Output: none |
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| 255 | * Pre-conditions: none |
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| 256 | * Affects: Se code |
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| 257 | * Depends: none. |
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| 258 | */ |
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| 259 | void mainInit() |
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| 260 | { |
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| 261 | LED0_TRIS=0; |
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| 262 | |||
| 263 | // Enable internal PORTB pull-ups |
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| 264 | INTCON2bits.RBPU = 0; |
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| 265 | |||
| 266 | // Enable Interrupts |
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| 267 | INTCONbits.GIEH = 1; |
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| 268 | INTCONbits.GIEL = 1; |
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| 269 | |||
| 270 | // Enable interrupt prirority |
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| 271 | RCONbits.IPEN=1; |
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| 272 | |||
| 273 | |||
| 274 | } |
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| 275 | |||
| 64 | johboh | 276 | |
| 277 | |||
| 278 | /// CAN------------------------------------------------------- |
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| 279 | |||
| 280 | |||
| 281 | #ifdef USE_CAN |
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| 282 | |||
| 283 | |||
| 53 | johboh | 284 | /* |
| 64 | johboh | 285 | * Function: canInit |
| 53 | johboh | 286 | * |
| 64 | johboh | 287 | * Input: none |
| 53 | johboh | 288 | * Output: none |
| 64 | johboh | 289 | * Pre-conditions: none |
| 290 | * Affects: Changes can registers. |
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| 53 | johboh | 291 | * Depends: none. |
| 292 | */ |
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| 64 | johboh | 293 | void canInit() |
| 53 | johboh | 294 | { |
| 64 | johboh | 295 | CANCON = 0x80; //request config mode |
| 296 | while ((CANSTAT & 0xE0) != 0x80 ); //wait for config mode request |
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| 297 | |||
| 298 | // BAUD AND TQS |
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| 299 | |||
| 300 | BRGCON1=0; |
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| 301 | |||
| 302 | // Sync_Seq = 2 x TQ = 1 |
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| 303 | BRGCON1bits.SJW1=0; |
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| 304 | BRGCON1bits.SJW0=1; |
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| 305 | |||
| 306 | // Setting BRP. |
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| 307 | BRGCON1=BRGCON1|CAN_BRP; |
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| 308 | |||
| 309 | // Maximum PHEG1 |
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| 310 | BRGCON2bits.SEG2PHTS = 1; |
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| 311 | |||
| 312 | // Phase_Seg1 = 2 x TQ = 1 |
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| 313 | BRGCON2bits.SEG1PH2 = 0; |
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| 314 | BRGCON2bits.SEG1PH1 = 0; |
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| 315 | BRGCON2bits.SEG1PH0 = 1; |
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| 316 | |||
| 317 | // Prop_Seq = 2 x TQ = 1 |
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| 318 | BRGCON2bits.PRSEG2 = 0; |
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| 319 | BRGCON2bits.PRSEG1 = 0; |
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| 320 | BRGCON2bits.PRSEG0 = 1; |
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| 321 | |||
| 322 | // Enableing bus wake-up |
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| 323 | BRGCON3bits.WAKDIS = 0; |
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| 324 | |||
| 325 | // Dont use filter when wakeup |
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| 326 | BRGCON3bits.WAKFIL = 0; |
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| 327 | |||
| 328 | // Phase_Seg2 = 2 x TQ = 1 |
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| 329 | BRGCON3bits.SEG2PH2 = 0; |
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| 330 | BRGCON3bits.SEG2PH1 = 0; |
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| 331 | BRGCON3bits.SEG2PH0 = 1; |
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| 332 | |||
| 333 | ECANCON=0; |
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| 334 | ECANCONbits.MDSEL1 = 0; |
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| 335 | ECANCONbits.MDSEL0 = 1; |
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| 336 | |||
| 337 | |||
| 338 | // FILTERS AND MASKS |
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| 339 | RXB0CONbits.RXM1=1; |
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| 340 | RXB0CONbits.RXM0=0; |
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| 341 | |||
| 342 | |||
| 343 | // INTERRUPTS |
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| 344 | |||
| 345 | // Diable transmit interrupt |
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| 346 | TXBIE = 0; |
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| 347 | |||
| 348 | //rx no interrupt |
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| 349 | PIR3 = 0; |
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| 350 | PIE3 = 0; |
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| 351 | |||
| 352 | |||
| 353 | // Programmable no buffers interrupt |
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| 354 | BIE0 = 0x00; |
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| 355 | |||
| 356 | |||
| 357 | //loopback mode or not |
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| 358 | #ifdef CAN_LOOPBACK_MODE |
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| 359 | CANCON = 0x40;//request loopback mode |
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| 360 | while ((CANSTAT & 0xE0) != 0x40 );//wait for loopback mode |
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| 361 | #else |
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| 362 | CANCON = 0x00;//request normal mode |
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| 363 | while ((CANSTAT & 0xE0) != 0x00 );//wait for normal mode |
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| 364 | #endif |
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| 365 | |||
| 53 | johboh | 366 | } |
| 367 | |||
| 64 | johboh | 368 | |
| 369 | |||
| 370 | |||
| 371 | /* |
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| 372 | * Function: canGetPacket |
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| 373 | * |
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| 374 | * Input: none |
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| 375 | * Output: none |
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| 376 | * Pre-conditions: a call to canISR and an packet is available and banked to RXB0 |
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| 377 | * Affects: Calls canParse() function in main for parsing received packet. |
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| 378 | * Depends: none. |
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| 379 | */ |
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| 380 | BOOL canGetPacket() |
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| 381 | { |
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| 382 | |||
| 383 | // Get which buffer that is ful. |
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| 384 | if (RXB0CONbits.RXFUL) { ECANCON=(ECANCON&0b00000)|0b10000; } |
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| 385 | else if (RXB1CONbits.RXFUL) { ECANCON=(ECANCON&0b00000)|0b10001; } |
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| 386 | else if (B0CONbits.RXFUL) { ECANCON=(ECANCON&0b00000)|0b10010; } |
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| 387 | else if (B1CONbits.RXFUL) { ECANCON=(ECANCON&0b00000)|0b10011; } |
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| 388 | else if (B2CONbits.RXFUL) { ECANCON=(ECANCON&0b00000)|0b10100; } |
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| 389 | else if (B3CONbits.RXFUL) { ECANCON=(ECANCON&0b00000)|0b10101; } |
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| 390 | else if (B4CONbits.RXFUL) { ECANCON=(ECANCON&0b00000)|0b10110; } |
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| 391 | else if (B5CONbits.RXFUL) { ECANCON=(ECANCON&0b00000)|0b10111; } |
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| 392 | else return FALSE; |
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| 393 | |||
| 394 | |||
| 395 | //RXB0SIDH 28 27 26 25 24 23 22 21 |
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| 396 | //RXB0SIDL 20 19 18 xx xx xx 17 16 |
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| 397 | //RXB0EIDH 15 14 13 12 11 10 09 08 |
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| 398 | //RXB0EIDL 07 06 05 04 03 02 01 00 |
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| 399 | |||
| 400 | //funct xx xx xx xx 28 27 26 25 |
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| 401 | //funcc xx xx xx xx xx xx 24 23 22 21 20 19 18 17 16 15 |
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| 402 | //nid xx xx 14 13 12 11 10 09 |
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| 403 | //sid xx xx xx xx xx xx xx 08 07 06 05 04 03 02 01 00 |
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| 404 | |||
| 405 | |||
| 406 | cm.funct=((RXB0SIDH & 0xF0)>>4); |
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| 407 | cm.funcc=(((WORD)(RXB0SIDH & 0x0F))<<6)+(((WORD)(RXB0SIDL & 0xE0))>>2)+(((WORD)(RXB0SIDL & 0x03))<<1)+(((WORD)(RXB0EIDH & 0x80))>>7); |
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| 408 | cm.nid=((RXB0EIDH & 0x7E)>>1); |
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| 409 | cm.sid=(((WORD)(RXB0EIDH & 0x01))<<8)+RXB0EIDL; |
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| 410 | |||
| 411 | |||
| 412 | // Data length |
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| 413 | cm.data_length=(RXB0DLCbits.DLC3<<3)+(RXB0DLCbits.DLC2<<2)+(RXB0DLCbits.DLC1<<1)+RXB0DLCbits.DLC0; |
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| 414 | |||
| 415 | // Remote request |
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| 416 | cm.remote_request=(RXB0DLCbits.RXRTR==0?FALSE:TRUE); |
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| 417 | |||
| 418 | // Data one bye one, for speed |
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| 419 | cm.data[0]=RXB0D0; cm.data[1]=RXB0D1; |
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| 420 | cm.data[2]=RXB0D2; cm.data[3]=RXB0D3; |
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| 421 | cm.data[4]=RXB0D4; cm.data[5]=RXB0D5; |
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| 422 | cm.data[6]=RXB0D6; cm.data[7]=RXB0D7; |
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| 423 | |||
| 424 | // Clear ful status |
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| 425 | RXB0CONbits.RXFUL=0; |
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| 426 | |||
| 427 | return TRUE; |
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| 428 | } |
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| 429 | |||
| 430 | |||
| 431 | /* |
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| 432 | * Function: canSendMessage |
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| 433 | * |
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| 434 | * Input: CAN_MESSAGE to send |
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| 435 | * Output: True if packet scheduled sucess, false otherwise. |
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| 436 | * Pre-conditions: canInit |
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| 437 | * Affects: .. |
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| 438 | * Depends: .. |
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| 439 | */ |
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| 440 | BOOL canSendMessage(CAN_PROTO_MESSAGE cm,CAN_PRIORITY prio) |
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| 441 | { |
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| 442 | |||
| 443 | if ( TXB0CONbits.TXREQ == 0 ) { ECANCON=(ECANCON&0b00000)|0b00011; } |
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| 444 | if ( TXB1CONbits.TXREQ == 0 ) { ECANCON=(ECANCON&0b00000)|0b00100; } |
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| 445 | if ( TXB2CONbits.TXREQ == 0 ) { ECANCON=(ECANCON&0b00000)|0b00101; } |
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| 446 | // None of the transmit buffers were empty. |
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| 447 | else { return FALSE;} |
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| 448 | |||
| 449 | if (prio<0 || prio>3) prio = 0; |
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| 450 | |||
| 451 | |||
| 452 | //RXB0SIDH 28 27 26 25 24 23 22 21 |
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| 453 | //RXB0SIDL 20 19 18 xx xx xx 17 16 |
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| 454 | //RXB0EIDH 15 14 13 12 11 10 09 08 |
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| 455 | //RXB0EIDL 07 06 05 04 03 02 01 00 |
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| 456 | |||
| 457 | //funct xx xx xx xx 28 27 26 25 |
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| 458 | //funcc xx xx xx xx xx xx 24 23 22 21 20 19 18 17 16 15 |
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| 459 | //nid xx xx 14 13 12 11 10 09 |
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| 460 | //sid xx xx xx xx xx xx xx 08 07 06 05 04 03 02 01 00 |
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| 461 | |||
| 462 | RXB0SIDH = (BYTE)((cm.funct & 0x0F)<<4)+(BYTE)((cm.funcc & 0x03C0)>>6); |
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| 463 | RXB0SIDL = (BYTE)((cm.funcc & 0x003F)<<2)+(BYTE)((cm.funcc & 0x0006)>>1); |
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| 464 | RXB0EIDH = (BYTE)((cm.funcc & 0x0001)<<7)+(BYTE)((cm.nid & 0x3F)<<1)+(BYTE)((cm.sid & 0x0100)>>8); |
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| 465 | RXB0EIDL = (BYTE)((cm.sid & 0x00FF)); |
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| 466 | |||
| 467 | // Data length |
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| 468 | RXB0DLC = 0; |
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| 469 | if (cm.data_length>8) RXB0DLC=8; else RXB0DLC=cm.data_length; |
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| 470 | |||
| 471 | // Remote request |
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| 472 | if (cm.remote_request==TRUE) |
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| 473 | { |
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| 474 | _asm |
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| 475 | bsf RXB0DLC, 6, 0 |
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| 476 | _endasm |
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| 477 | } |
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| 478 | else |
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| 479 | { |
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| 480 | _asm |
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| 481 | bcf RXB0DLC, 6, 0 |
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| 482 | _endasm |
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| 483 | } |
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| 484 | |||
| 485 | // Data one bye one, for speed |
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| 486 | RXB0D0=cm.data[0]; RXB0D1=cm.data[1]; |
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| 487 | RXB0D2=cm.data[2]; RXB0D3=cm.data[3]; |
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| 488 | RXB0D4=cm.data[4]; RXB0D5=cm.data[5]; |
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| 489 | RXB0D6=cm.data[6]; RXB0D7=cm.data[7]; |
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| 490 | |||
| 491 | // set extended or not |
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| 492 | RXB0SIDLbits.EXID=1; |
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| 493 | |||
| 494 | // Priority |
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| 495 | RXB0CON = (RXB0CON & 0b11111100) | prio; |
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| 496 | |||
| 497 | // mark as redy to transmit |
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| 498 | _asm |
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| 499 | bsf RXB0CON, 3, 0 |
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| 500 | _endasm |
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| 501 | |||
| 502 | return TRUE; |
||
| 503 | |||
| 504 | } |
||
| 505 | |||
| 506 | |||
| 507 | |||
| 508 | #endif //USE_CAN |