| 提交 | 用户 | age | ||
| 5dd1b7 | 1 | #include "SLP.h" |
| Q | 2 | |
| 842bb6 | 3 | //void SLPSendPacket(char * buf, uchar len1); |
| 5dd1b7 | 4 | |
| Q | 5 | uchar SLPBCC(char * pBuf, uchar len1) |
| 6 | { | |
| 7 | uchar i; | |
| 8 | uchar BCC=0; | |
| 9 | for (i=0;i<len1;i++) | |
| 10 | { | |
| 11 | BCC += pBuf[i]; | |
| 12 | } | |
| 13 | return BCC; | |
| 14 | } | |
| 15 | ||
| 842bb6 | 16 | void SLPInit(stSLPDef * pSLP, SLPSendPktDef pFunc1) |
| Q | 17 | { |
| 18 | pSLP->SLPLostPkt = 0; | |
| 19 | pSLP->nCount = 0; | |
| 20 | pSLP->SLPSendPktFunc = pFunc1; | |
| 21 | ||
| 22 | } | |
| 23 | ||
| 24 | void SLPSetCallBack(stSLPDef * pSLP, SLPSendPktDef pFunc1) | |
| 25 | { | |
| 26 | pSLP->SLPSendPktFunc = pFunc1; | |
| 27 | } | |
| 28 | ||
| 29 | void SLPparsePacket(stSLPDef * pSLP, char * pRecvBuf, uchar len1) | |
| 5dd1b7 | 30 | { |
| Q | 31 | |
| 32 | stSLPPacket * pPacket = (stSLPPacket *)pRecvBuf; | |
| 33 | if (len1 != sizeof(stSLPPacket)) return; | |
| 34 | // if (pPacket->ED != EDsign) return; | |
| 35 | if (pPacket->BCC != SLPBCC(pRecvBuf,len1-1)) return; | |
| 842bb6 | 36 | if (pSLP->bSLPMaster) //master |
| 5dd1b7 | 37 | { |
| Q | 38 | if (pPacket->ST ==ST_S) |
| 39 | { | |
| 40 | //check | |
| 842bb6 | 41 | if (pPacket->Dst == pSLP->nCurStation) { |
| Q | 42 | pSLP->SLPMasterRecved=1; |
| 43 | pSLP->SLPLostPkt=0; | |
| 44 | pSLP->inputBuf[pSLP->nCurStation] = pPacket->Data; | |
| 5dd1b7 | 45 | } |
| Q | 46 | } |
| 47 | // SLPoutputB = (inputBuf[1] &0x0f) | ((inputBuf[2] &0x0f) << 4); | |
| 842bb6 | 48 | pSLP->SLPoutputB = pSLP->inputBuf[1]; |
| 5dd1b7 | 49 | }else |
| Q | 50 | { //slave |
| 51 | if (pPacket->ST==ST_M) | |
| 52 | { | |
| 53 | //check | |
| 842bb6 | 54 | stSLPPacket * pRplyPkt = (stSLPPacket *)pSLP->SendBuf; |
| Q | 55 | if (pPacket->Dst == pSLP->nStation) { |
| 56 | pSLP->SLPoutputB = pPacket->Data; | |
| 57 | pSLP->SLPSlaveCountOut=0; | |
| 5dd1b7 | 58 | |
| Q | 59 | pRplyPkt->ST = ST_S; |
| 842bb6 | 60 | pRplyPkt->Dst = pSLP->nStation; |
| Q | 61 | pRplyPkt->Data = pSLP->SLPinputB; |
| 62 | pRplyPkt->BCC = SLPBCC(pSLP->SendBuf, sizeof(stSLPPacket)-1); | |
| 5dd1b7 | 63 | // pRplyPkt->ED = EDsign; |
| Q | 64 | |
| 842bb6 | 65 | pSLP->SLPSendPktFunc(pSLP->SendBuf,sizeof(stSLPPacket)); |
| 5dd1b7 | 66 | } |
| Q | 67 | } |
| 68 | } | |
| 69 | } | |
| 70 | ||
| 842bb6 | 71 | void SLPMasterSendPacket(stSLPDef * pSLP) |
| 5dd1b7 | 72 | { |
| Q | 73 | |
| 842bb6 | 74 | stSLPPacket * pReqPkt = (stSLPPacket *)pSLP->SendBuf; |
| Q | 75 | pSLP->outputBuf[1]=pSLP->SLPinputB ;//&0xf; |
| 5dd1b7 | 76 | // outputBuf[2] = (SLPinputB & 0xf0) >> 4; |
| Q | 77 | pReqPkt->ST = ST_M; |
| 842bb6 | 78 | pReqPkt->Dst = pSLP->nCurStation; |
| Q | 79 | pReqPkt->Data = pSLP->outputBuf[pSLP->nCurStation]; ; |
| 80 | pReqPkt->BCC = SLPBCC(pSLP->SendBuf, sizeof(stSLPPacket)-1); | |
| 5dd1b7 | 81 | // pReqPkt->ED = EDsign; |
| Q | 82 | |
| 842bb6 | 83 | pSLP->SLPSendPktFunc(pSLP->SendBuf,sizeof(stSLPPacket)); |
| 5dd1b7 | 84 | } |
| 842bb6 | 85 | |
| Q | 86 | void SLPProcess(stSLPDef * pSLP) |
| 5dd1b7 | 87 | { |
| 842bb6 | 88 | if (pSLP->bSLPMaster) //master |
| 5dd1b7 | 89 | { |
| 842bb6 | 90 | if ( (pSLP->nCount & 0xf) == 0 ) |
| 5dd1b7 | 91 | { //time up |
| 842bb6 | 92 | if (pSLP->SLPMasterRecved) { |
| 5dd1b7 | 93 | // SLPMasterRecved=0; |
| 842bb6 | 94 | pSLP->SLPOKSign = 1; |
| Q | 95 | if (pSLP->SLPErrSign) pSLP->SLPErrSign--; |
| 5dd1b7 | 96 | |
| Q | 97 | }else { |
| 842bb6 | 98 | pSLP->SLPLostPkt++; |
| Q | 99 | if (pSLP->SLPLostPkt > 10) { |
| 100 | pSLP->SLPErrSign=20; | |
| 101 | pSLP->SLPOKSign = 0; | |
| 5dd1b7 | 102 | } |
| Q | 103 | } |
| 842bb6 | 104 | if (pSLP->nStation >0) { |
| Q | 105 | pSLP->nCurStation++; |
| 106 | if (pSLP->nCurStation > pSLP->nStation) { | |
| 107 | pSLP->nCurStation =1; | |
| 5dd1b7 | 108 | } |
| 842bb6 | 109 | pSLP->SLPMasterRecved=0; |
| Q | 110 | SLPMasterSendPacket(pSLP); |
| 5dd1b7 | 111 | } |
| Q | 112 | } |
| 113 | }else | |
| 114 | { | |
| 842bb6 | 115 | pSLP->SLPSlaveCountOut ++; |
| Q | 116 | if (pSLP->SLPSlaveCountOut >200) // 20mS |
| 5dd1b7 | 117 | { |
| 842bb6 | 118 | pSLP->SLPErrSign=100; |
| 5dd1b7 | 119 | }else { |
| 842bb6 | 120 | if (pSLP->SLPErrSign) pSLP->SLPErrSign--; |
| 5dd1b7 | 121 | } |
| Q | 122 | } |
| 842bb6 | 123 | pSLP->nCount++; |
| 5dd1b7 | 124 | } |
