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This commit is contained in:
iceman1001 2018-01-05 17:40:07 +01:00
parent 82dbfba827
commit 05b62d0b3d
1 changed files with 14 additions and 13 deletions
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27
armsrc/iso14443a.c
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@ -3410,8 +3410,8 @@ void RAMFUNC SniffMifare(uint8_t param) {
// Setup and start DMA.
// set transfer address and number of bytes. Start transfer.
if ( !FpgaSetupSscDma((uint8_t*) dmaBuf, DMA_BUFFER_SIZE) ){
if (MF_DBGLEVEL > 1) Dbprintf("FpgaSetupSscDma failed. Exiting");
if ( !FpgaSetupSscDma(dmaBuf, DMA_BUFFER_SIZE) ){
if (MF_DBGLEVEL > 1) Dbprintf("[-] FpgaSetupSscDma failed. Exiting");
return;
}
@ -3427,6 +3427,7 @@ void RAMFUNC SniffMifare(uint8_t param) {
LED_A_ON();
if ((sniffCounter & 0x0000FFFF) == 0) { // from time to time
// check if a transaction is completed (timeout after 2000ms).
// if yes, stop the DMA transfer and send what we have so far to the client
if (MfSniffSend(2000)) {
@ -3438,7 +3439,7 @@ void RAMFUNC SniffMifare(uint8_t param) {
TagIsActive = false;
// Setup and start DMA. set transfer address and number of bytes. Start transfer.
if ( !FpgaSetupSscDma(dmaBuf, DMA_BUFFER_SIZE) ){
if (MF_DBGLEVEL > 1) Dbprintf("FpgaSetupSscDma failed. Exiting");
if (MF_DBGLEVEL > 1) DbpString("[-] FpgaSetupSscDma failed. Exiting");
return;
}
}
@ -3455,24 +3456,24 @@ void RAMFUNC SniffMifare(uint8_t param) {
dataLen = DMA_BUFFER_SIZE - readBufDataP + dmaBufDataP; // number of bytes still to be processed
// test for length of buffer
if(dataLen > maxDataLen) { // we are more behind than ever...
if (dataLen > maxDataLen) { // we are more behind than ever...
maxDataLen = dataLen;
if(dataLen > (9 * DMA_BUFFER_SIZE / 10)) {
Dbprintf("blew circular buffer! dataLen=0x%x", dataLen);
if (dataLen > (9 * DMA_BUFFER_SIZE / 10)) {
Dbprintf("[-] blew circular buffer! dataLen=0x%x", dataLen);
break;
}
}
if(dataLen < 1) continue;
if (dataLen < 1) continue;
// primary buffer was stopped ( <-- we lost data!
if (!AT91C_BASE_PDC_SSC->PDC_RCR) {
AT91C_BASE_PDC_SSC->PDC_RPR = (uint32_t) dmaBuf;
AT91C_BASE_PDC_SSC->PDC_RPR = (uint32_t)dmaBuf;
AT91C_BASE_PDC_SSC->PDC_RCR = DMA_BUFFER_SIZE;
Dbprintf("RxEmpty ERROR, data length:%d", dataLen); // temporary
Dbprintf("[-] RxEmpty ERROR, data length:%d", dataLen); // temporary
}
// secondary buffer sets as primary, secondary buffer was stopped
if (!AT91C_BASE_PDC_SSC->PDC_RNCR) {
AT91C_BASE_PDC_SSC->PDC_RNPR = (uint32_t) dmaBuf;
AT91C_BASE_PDC_SSC->PDC_RNPR = (uint32_t)dmaBuf;
AT91C_BASE_PDC_SSC->PDC_RNCR = DMA_BUFFER_SIZE;
}
@ -3483,7 +3484,7 @@ void RAMFUNC SniffMifare(uint8_t param) {
// no need to try decoding tag data if the reader is sending
if (!TagIsActive) {
uint8_t readerdata = (previous_data & 0xF0) | (*data >> 4);
if(MillerDecoding(readerdata, (sniffCounter-1)*4)) {
if (MillerDecoding(readerdata, (sniffCounter-1)*4)) {
LED_C_INV();
if (MfSniffLogic(receivedCmd, Uart.len, Uart.parity, Uart.bitCount, true)) break;
@ -3497,7 +3498,7 @@ void RAMFUNC SniffMifare(uint8_t param) {
// no need to try decoding tag data if the reader is sending
if (!ReaderIsActive) {
uint8_t tagdata = (previous_data << 4) | (*data & 0x0F);
if(ManchesterDecoding(tagdata, 0, (sniffCounter-1)*4)) {
if (ManchesterDecoding(tagdata, 0, (sniffCounter-1)*4)) {
LED_C_INV();
if (MfSniffLogic(receivedResponse, Demod.len, Demod.parity, Demod.bitCount, false)) break;
@ -3513,7 +3514,7 @@ void RAMFUNC SniffMifare(uint8_t param) {
sniffCounter++;
data++;
if(data == dmaBuf + DMA_BUFFER_SIZE)
if (data == dmaBuf + DMA_BUFFER_SIZE)
data = dmaBuf;
} // main cycle