Arianna autonomous DAQ firmware
Dependencies: mbed SDFileSystemFilinfo AriSnProtocol NetServicesMin AriSnComm MODSERIAL PowerControlClkPatch DS1820OW
SnUIDtoMac.cpp
- Committer:
- uci1
- Date:
- 2016-10-24
- Revision:
- 117:fd6798ba2e26
- Parent:
- 116:8099b754fbb4
- Child:
- 119:b3d7699d0eb0
File content as of revision 117:fd6798ba2e26:
#include "SnUIDtoMac.h" #include "SnCRCUtils.h" #include "SnConstants.h" void SnUIDtoMac::GetMacAddress( char mac[SnUIDtoMac::kNumMacBytes] ) { // this first gets the UID of the ARM chip (LPC1768) // it then tries to see if the UID is in the lookup table of known MAC addresses // (the lookup table is found in GetMacFromUIDtable) // if not, it constructs a fake MAC address given the UID (see GetMacFromCRCofUID) uint32_t uid[SnLPC1768UID::kUIDlen]; const bool uidOk = SnLPC1768UID::GetUID(uid); if (uidOk) { #ifdef DEBUG printf("got UID = %08X %08X %08X %08X\r\n", uid[0], uid[1], uid[2], uid[3]); #endif const bool uidInLookupTable = GetMacFromUIDtable(uid, mac); if (uidInLookupTable==false) { #ifdef DEBUG printf("UID not in lookup table. Constructing MAC.\r\n"); #endif GetMacFromCRCofUID(uid, mac); } #ifdef DEBUG else { printf("UID found in lookup table.\r\n"); } #endif } else { #ifdef DEBUG printf("mac/uid lookup failed.\r\n"); #endif // otherwise we failed. use the default memmove(mac, kDefaultMacAdress, sizeof(kDefaultMacAdress)); } } bool SnUIDtoMac::GetMacFromUIDtable(const uint32_t uid[SnLPC1768UID::kUIDlen], char mac[kNumMacBytes] ) { if ( (uid[0]==0x0A015013) && (uid[1]==0xAE2A8CA0) && (uid[2]==0x52B77AA3) && (uid[3]==0xF5001E84) ) { // SST102, stn13 mac[0]=0x00; mac[1]=0x02; mac[2]=0xF7; mac[3]=0xF2; mac[4]=0x24; mac[5]=0x4B; return true; } else if ( (uid[0]==0x0A01300B) && (uid[1]==0xAE2A9126) && (uid[2]==0x52B29DC5) && (uid[3]==0xF5001E84) ) { // SST104, stn14 mac[0]=0x00; mac[1]=0x02; mac[2]=0xF7; mac[3]=0xF2; mac[4]=0x0A; mac[5]=0x9C; return true; } else if ( (uid[0]==0x0A000002) && (uid[1]==0xAE299840) && (uid[2]==0x52A26AFA) && (uid[3]==0xF5001E82) ) { // SST110, stn15 mac[0]=0x00; mac[1]=0x02; mac[2]=0xF7; mac[3]=0xF1; mac[4]=0xF7; mac[5]=0xA8; return true; } else if ( (uid[0]==0x0A000010) && (uid[1]==0xAE2A9126) && (uid[2]==0x52B2A03B) && (uid[3]==0xF5001E80) ) { // SST109, stn17 mac[0]=0x00; mac[1]=0x02; mac[2]=0xF7; mac[3]=0xF2; mac[4]=0x02; mac[5]=0xC1; return true; } else if ( (uid[0]==0x0DFFC013) && (uid[1]==0xAE2A9126) && (uid[2]==0x52B2B04A) && (uid[3]==0xF5001E87) ) { // SST111, stn18 mac[0]=0x00; mac[1]=0x02; mac[2]=0xF7; mac[3]=0xF2; mac[4]=0x1A; mac[5]=0x8A; return true; } else if ( (uid[0]==0x0E00D01E) && (uid[1]==0xAE2A9126) && (uid[2]==0x52B3DEC1) && (uid[3]==0xF5001E80) ) { // SST105, stn19 mac[0]=0x00; mac[1]=0x02; mac[2]=0xF7; mac[3]=0xF2; mac[4]=0x24; mac[5]=0x44; return true; } else if ( (uid[0]==0x17006008) && (uid[1]==0xAE299840) && (uid[2]==0x52A2BD7C) && (uid[3]==0xF5001E80) ) { // SST107, stn31 mac[0]=0x00; mac[1]=0x02; mac[2]=0xF7; mac[3]=0xF1; mac[4]=0xF6; mac[5]=0x34; return true; } else if ( (uid[0]==0x12013009) && (uid[1]==0xAE2A8CA7) && (uid[2]==0x52C35FA6) && (uid[3]==0xF5001E85) ) { // SST113, stn30 mac[0]=0x00; mac[1]=0x02; mac[2]=0xF7; mac[3]=0xF1; mac[4]=0xF2; mac[5]=0x12; return true; } else if ( (uid[0]==0x1200B00D) && (uid[1]==0xAE2A8CA7) && (uid[2]==0x52C36348) && (uid[3]==0xF5001E84) ) { // SST112, stn32 mac[0]=0x00; mac[1]=0x02; mac[2]=0xF7; mac[3]=0xF1; mac[4]=0xF2; mac[5]=0x1A; return true; } else if ( (uid[0]==0x07FFA008) && (uid[1]==0xAE299840) && (uid[2]==0x52A25792) && (uid[3]==0xF5001E87) ) { // SST108, HCR Station 40. this mbed doesn't keep time properly. mac[0]=0x00; mac[1]=0x02; mac[2]=0xF7; mac[3]=0xF1; mac[4]=0xE9; mac[5]=0xED; return true; } else if ( (uid[0]==0x0A003002) && (uid[1]==0xAE299840) && (uid[2]==0x52A269C6) && (uid[3]==0xF5001E81) ) { // SST101, CR Station 41 mac[0]=0x00; mac[1]=0x02; mac[2]=0xF7; mac[3]=0xF1; mac[4]=0xF7; mac[5]=0xC6; return true; } else if ( (uid[0]==0x07010008) && (uid[1]==0xAE299840) && (uid[2]==0x52A25466) && (uid[3]==0xF5001E82) ) { // SST114, bad SST - not deployed. here in case this mbed gets put on a different board mac[0]=0x00; mac[1]=0x02; mac[2]=0xF7; mac[3]=0xF1; mac[4]=0xE9; mac[5]=0xE1; return true; } // not in the "lookup table" return false; } void SnUIDtoMac::GetMacFromCRCofUID(const uint32_t uid[SnLPC1768UID::kUIDlen], char mac[kNumMacBytes] ) { // take 2 bytes from the start of the UID and then add on a 32bit CRC of the // while UID in order to get a fake 48bit "mac address" const uint32_t crc = SnCRCUtils::GetCRC32for(uid, SnLPC1768UID::kUIDlen); #ifdef DEBUG printf("Got UID crc = %u\r\n", crc); printf("len=%d, byte=%d\r\n", int(SnLPC1768UID::kUIDlen), int(SnLPC1768UID::kUIDlen*sizeof(char))); #endif union { uint32_t x; char c[sizeof(uint32_t)]; } d; d.x = uid[0]; mac[0] = d.c[0]; mac[1] = d.c[1]; d.x = crc; memmove(mac+2, d.c, SnLPC1768UID::kUIDlen*sizeof(char)); #ifdef DEBUG printf("generated MAC = %02X %02X %02X %02X %02X %02X\r\n", mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]); #endif }