X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/67853904cc3b29d33e053509b9f133e44f9314f8..245e844e80045bc566331c0e59a75e19d15e5bd8:/armsrc/appmain.c diff --git a/armsrc/appmain.c b/armsrc/appmain.c index dec71dcd..f2ae56d8 100644 --- a/armsrc/appmain.c +++ b/armsrc/appmain.c @@ -1,23 +1,31 @@ //----------------------------------------------------------------------------- -// The main application code. This is the first thing called after start.c -// executes. // Jonathan Westhues, Mar 2006 // Edits by Gerhard de Koning Gans, Sep 2007 (##) +// +// This code is licensed to you under the terms of the GNU GPL, version 2 or, +// at your option, any later version. See the LICENSE.txt file for the text of +// the license. +//----------------------------------------------------------------------------- +// The main application code. This is the first thing called after start.c +// executes. //----------------------------------------------------------------------------- - -#include -#include +#include "proxmark3.h" #include "apps.h" +#include "util.h" +#include "printf.h" +#include "string.h" + +#include + +#include "legicrf.h" + #ifdef WITH_LCD -#include "fonts.h" -#include "LCD.h" +# include "fonts.h" +# include "LCD.h" #endif -// The large multi-purpose buffer, typically used to hold A/D samples, -// maybe pre-processed in some way. -DWORD BigBuf[16000]; -int usbattached = 0; +#define abs(x) ( ((x)<0) ? -(x) : (x) ) //============================================================================= // A buffer where we can queue things up to be sent through the FPGA, for @@ -25,15 +33,15 @@ int usbattached = 0; // is the order in which they go out on the wire. //============================================================================= -BYTE ToSend[256]; +uint8_t ToSend[512]; int ToSendMax; static int ToSendBit; - +struct common_area common_area __attribute__((section(".commonarea"))); void BufferClear(void) { memset(BigBuf,0,sizeof(BigBuf)); - DbpString("Buffer cleared"); + Dbprintf("Buffer cleared (%i bytes)",sizeof(BigBuf)); } void ToSendReset(void) @@ -69,203 +77,74 @@ void ToSendStuffBit(int b) void DbpString(char *str) { /* this holds up stuff unless we're connected to usb */ -// if (!usbattached) -// return; + if (!UsbConnected()) + return; UsbCommand c; c.cmd = CMD_DEBUG_PRINT_STRING; - c.ext1 = strlen(str); - memcpy(c.d.asBytes, str, c.ext1); + c.arg[0] = strlen(str); + if(c.arg[0] > sizeof(c.d.asBytes)) { + c.arg[0] = sizeof(c.d.asBytes); + } + memcpy(c.d.asBytes, str, c.arg[0]); - UsbSendPacket((BYTE *)&c, sizeof(c)); + UsbSendPacket((uint8_t *)&c, sizeof(c)); // TODO fix USB so stupid things like this aren't req'd SpinDelay(50); } +#if 0 void DbpIntegers(int x1, int x2, int x3) { /* this holds up stuff unless we're connected to usb */ -// if (!usbattached) -// return; + if (!UsbConnected()) + return; UsbCommand c; c.cmd = CMD_DEBUG_PRINT_INTEGERS; - c.ext1 = x1; - c.ext2 = x2; - c.ext3 = x3; + c.arg[0] = x1; + c.arg[1] = x2; + c.arg[2] = x3; - UsbSendPacket((BYTE *)&c, sizeof(c)); + UsbSendPacket((uint8_t *)&c, sizeof(c)); // XXX SpinDelay(50); } +#endif -void AcquireRawAdcSamples125k(BOOL at134khz) -{ - if(at134khz) { - FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 88); //134.8Khz - FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_READER); - } else { - FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz - FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_READER); - } - - // Connect the A/D to the peak-detected low-frequency path. - SetAdcMuxFor(GPIO_MUXSEL_LOPKD); - - // Give it a bit of time for the resonant antenna to settle. - SpinDelay(50); - - // Now set up the SSC to get the ADC samples that are now streaming at us. - FpgaSetupSsc(); - - // Now call the acquisition routine - DoAcquisition125k(at134khz); -} +void Dbprintf(const char *fmt, ...) { +// should probably limit size here; oh well, let's just use a big buffer + char output_string[128]; + va_list ap; -// split into two routines so we can avoid timing issues after sending commands // -void DoAcquisition125k(BOOL at134khz) -{ - BYTE *dest = (BYTE *)BigBuf; - int n = sizeof(BigBuf); - int i; + va_start(ap, fmt); + kvsprintf(fmt, output_string, 10, ap); + va_end(ap); - memset(dest,0,n); - i = 0; - for(;;) { - if(SSC_STATUS & (SSC_STATUS_TX_READY)) { - SSC_TRANSMIT_HOLDING = 0x43; - LED_D_ON(); - } - if(SSC_STATUS & (SSC_STATUS_RX_READY)) { - dest[i] = (BYTE)SSC_RECEIVE_HOLDING; - i++; - LED_D_OFF(); - if(i >= n) { - break; - } - } - } - DbpIntegers(dest[0], dest[1], at134khz); + DbpString(output_string); } -void ModThenAcquireRawAdcSamples125k(int delay_off,int period_0,int period_1,BYTE *command) -{ - BOOL at134khz; - - // see if 'h' was specified - if(command[strlen((char *) command) - 1] == 'h') - at134khz= TRUE; - else - at134khz= FALSE; - - if(at134khz) { - FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 88); //134.8Khz - FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_READER); - } else { - FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz - FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_READER); - } - - // Give it a bit of time for the resonant antenna to settle. - SpinDelay(50); - - // Now set up the SSC to get the ADC samples that are now streaming at us. - FpgaSetupSsc(); - - // now modulate the reader field - while(*command != '\0' && *command != ' ') - { - FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); - LED_D_OFF(); - SpinDelayUs(delay_off); - if(at134khz) { - FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 88); //134.8Khz - FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_READER); - } else { - FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz - FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_READER); - } - LED_D_ON(); - if(*(command++) == '0') - SpinDelayUs(period_0); - else - SpinDelayUs(period_1); - } - FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); - LED_D_OFF(); - SpinDelayUs(delay_off); - if(at134khz) { - FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 88); //134.8Khz - FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_READER); - } else { - FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz - FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_READER); +// prints HEX & ASCII +void Dbhexdump(int len, uint8_t *d) { + int l=0,i; + char ascii[9]; + + while (len>0) { + if (len>8) l=8; + else l=len; + + memcpy(ascii,d,l); + ascii[l]=0; + + // filter safe ascii + for (i=0;i126) ascii[i]='.'; + + Dbprintf("%-8s %*D",ascii,l,d," "); + + len-=8; + d+=8; } - - // now do the read - DoAcquisition125k(at134khz); -} - -//----------------------------------------------------------------------------- -// Read a TI-type tag. We assume that the tag has already been illuminated, -// and that the exciting signal has been turned off. That means that we just -// acquire the `one-bit DAC' bits from the comparator. -//----------------------------------------------------------------------------- -void AcquireTiType(void) -{ - int i; - int n = sizeof(BigBuf); - - // clear buffer - memset(BigBuf,0,sizeof(BigBuf)); - - // Set up the synchronous serial port - PIO_DISABLE = (1<= n) return; - } - WDT_HIT(); - } -} - -void AcquireRawBitsTI(void) -{ - LED_D_ON(); - // TI tags charge at 134.2Khz - FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 88); //134.8Khz - FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_READER); - - // Charge TI tag for 50ms. - SpinDelay(50); - LED_D_OFF(); - - LED_A_ON(); - // Place FPGA in passthrough mode so as to stop driving the LF coil, - // in this mode the CROSS_LO line connects to SSP_DIN - FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_PASSTHRU); - - // get TI tag data into the buffer - AcquireTiType(); - - FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); - LED_A_OFF(); } //----------------------------------------------------------------------------- @@ -275,22 +154,24 @@ void AcquireRawBitsTI(void) //----------------------------------------------------------------------------- static int ReadAdc(int ch) { - DWORD d; + uint32_t d; - ADC_CONTROL = ADC_CONTROL_RESET; - ADC_MODE = ADC_MODE_PRESCALE(32) | ADC_MODE_STARTUP_TIME(16) | + AT91C_BASE_ADC->ADC_CR = AT91C_ADC_SWRST; + AT91C_BASE_ADC->ADC_MR = + ADC_MODE_PRESCALE(32) | + ADC_MODE_STARTUP_TIME(16) | ADC_MODE_SAMPLE_HOLD_TIME(8); - ADC_CHANNEL_ENABLE = ADC_CHANNEL(ch); + AT91C_BASE_ADC->ADC_CHER = ADC_CHANNEL(ch); - ADC_CONTROL = ADC_CONTROL_START; - while(!(ADC_STATUS & ADC_END_OF_CONVERSION(ch))) + AT91C_BASE_ADC->ADC_CR = AT91C_ADC_START; + while(!(AT91C_BASE_ADC->ADC_SR & ADC_END_OF_CONVERSION(ch))) ; - d = ADC_CHANNEL_DATA(ch); + d = AT91C_BASE_ADC->ADC_CDR[ch]; return d; } -static int AvgAdc(int ch) +int AvgAdc(int ch) // was static - merlok { int i; int a = 0; @@ -304,7 +185,7 @@ static int AvgAdc(int ch) void MeasureAntennaTuning(void) { - BYTE *dest = (BYTE *)BigBuf; + uint8_t *dest = (uint8_t *)BigBuf; int i, ptr = 0, adcval = 0, peak = 0, peakv = 0, peakf = 0;; int vLf125 = 0, vLf134 = 0, vHf = 0; // in mV @@ -348,364 +229,38 @@ void MeasureAntennaTuning(void) vHf = (33000 * AvgAdc(ADC_CHAN_HF)) >> 10; c.cmd = CMD_MEASURED_ANTENNA_TUNING; - c.ext1 = (vLf125 << 0) | (vLf134 << 16); - c.ext2 = vHf; - c.ext3 = peakf | (peakv << 16); - UsbSendPacket((BYTE *)&c, sizeof(c)); + c.arg[0] = (vLf125 << 0) | (vLf134 << 16); + c.arg[1] = vHf; + c.arg[2] = peakf | (peakv << 16); + UsbSendPacket((uint8_t *)&c, sizeof(c)); } -void SimulateTagLowFrequency(int period, int ledcontrol) +void MeasureAntennaTuningHf(void) { - int i; - BYTE *tab = (BYTE *)BigBuf; - - FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_SIMULATOR); - - PIO_ENABLE = (1 << GPIO_SSC_DOUT) | (1 << GPIO_SSC_CLK); - - PIO_OUTPUT_ENABLE = (1 << GPIO_SSC_DOUT); - PIO_OUTPUT_DISABLE = (1 << GPIO_SSC_CLK); - -#define SHORT_COIL() LOW(GPIO_SSC_DOUT) -#define OPEN_COIL() HIGH(GPIO_SSC_DOUT) - - i = 0; - for(;;) { - while(!(PIO_PIN_DATA_STATUS & (1<0xFFF) { - DbpString("Tags can only have 44 bits."); - return; - } - fc(0,&n); - // special start of frame marker containing invalid bit sequences - fc(8, &n); fc(8, &n); // invalid - fc(8, &n); fc(10, &n); // logical 0 - fc(10, &n); fc(10, &n); // invalid - fc(8, &n); fc(10, &n); // logical 0 - - WDT_HIT(); - // manchester encode bits 43 to 32 - for (i=11; i>=0; i--) { - if ((i%4)==3) fc(0,&n); - if ((hi>>i)&1) { - fc(10, &n); fc(8, &n); // low-high transition - } else { - fc(8, &n); fc(10, &n); // high-low transition - } - } + for (;;) { + // Let the FPGA drive the high-frequency antenna around 13.56 MHz. + FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_RX_XCORR); + SpinDelay(20); + // Vref = 3300mV, and an 10:1 voltage divider on the input + // can measure voltages up to 33000 mV + vHf = (33000 * AvgAdc(ADC_CHAN_HF)) >> 10; - WDT_HIT(); - // manchester encode bits 31 to 0 - for (i=31; i>=0; i--) { - if ((i%4)==3) fc(0,&n); - if ((lo>>i)&1) { - fc(10, &n); fc(8, &n); // low-high transition - } else { - fc(8, &n); fc(10, &n); // high-low transition - } + Dbprintf("%d mV",vHf); + if (BUTTON_PRESS()) break; } - - if (ledcontrol) - LED_A_ON(); - SimulateTagLowFrequency(n, ledcontrol); - - if (ledcontrol) - LED_A_OFF(); + DbpString("cancelled"); } -// loop to capture raw HID waveform then FSK demodulate the TAG ID from it -static void CmdHIDdemodFSK(int findone, int *high, int *low, int ledcontrol) -{ - BYTE *dest = (BYTE *)BigBuf; - int m=0, n=0, i=0, idx=0, found=0, lastval=0; - DWORD hi=0, lo=0; - - FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz - FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_READER); - - // Connect the A/D to the peak-detected low-frequency path. - SetAdcMuxFor(GPIO_MUXSEL_LOPKD); - - // Give it a bit of time for the resonant antenna to settle. - SpinDelay(50); - - // Now set up the SSC to get the ADC samples that are now streaming at us. - FpgaSetupSsc(); - - for(;;) { - WDT_HIT(); - if (ledcontrol) - LED_A_ON(); - if(BUTTON_PRESS()) { - DbpString("Stopped"); - if (ledcontrol) - LED_A_OFF(); - return; - } - - i = 0; - m = sizeof(BigBuf); - memset(dest,128,m); - for(;;) { - if(SSC_STATUS & (SSC_STATUS_TX_READY)) { - SSC_TRANSMIT_HOLDING = 0x43; - if (ledcontrol) - LED_D_ON(); - } - if(SSC_STATUS & (SSC_STATUS_RX_READY)) { - dest[i] = (BYTE)SSC_RECEIVE_HOLDING; - // we don't care about actual value, only if it's more or less than a - // threshold essentially we capture zero crossings for later analysis - if(dest[i] < 127) dest[i] = 0; else dest[i] = 1; - i++; - if (ledcontrol) - LED_D_OFF(); - if(i >= m) { - break; - } - } - } - - // FSK demodulator - - // sync to first lo-hi transition - for( idx=1; idx>1)&0xffff); - /* if we're only looking for one tag */ - if (findone) - { - *high = hi; - *low = lo; - return; - } - hi=0; - lo=0; - found=0; - } - } - if (found) { - if (dest[idx] && (!dest[idx+1]) ) { - hi=(hi<<1)|(lo>>31); - lo=(lo<<1)|0; - } else if ( (!dest[idx]) && dest[idx+1]) { - hi=(hi<<1)|(lo>>31); - lo=(lo<<1)|1; - } else { - found=0; - hi=0; - lo=0; - } - idx++; - } - if ( dest[idx] && dest[idx+1] && dest[idx+2] && (!dest[idx+3]) && (!dest[idx+4]) && (!dest[idx+5]) ) - { - found=1; - idx+=6; - if (found && (hi|lo)) { - DbpString("TAG ID"); - DbpIntegers(hi, lo, (lo>>1)&0xffff); - /* if we're only looking for one tag */ - if (findone) - { - *high = hi; - *low = lo; - return; - } - hi=0; - lo=0; - found=0; - } - } - } - WDT_HIT(); - } -} void SimulateTagHfListen(void) { - BYTE *dest = (BYTE *)BigBuf; + uint8_t *dest = (uint8_t *)BigBuf; int n = sizeof(BigBuf); - BYTE v = 0; + uint8_t v = 0; int i; int p = 0; @@ -720,11 +275,11 @@ void SimulateTagHfListen(void) i = 0; for(;;) { - if(SSC_STATUS & (SSC_STATUS_TX_READY)) { - SSC_TRANSMIT_HOLDING = 0xff; + if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) { + AT91C_BASE_SSC->SSC_THR = 0xff; } - if(SSC_STATUS & (SSC_STATUS_RX_READY)) { - BYTE r = (BYTE)SSC_RECEIVE_HOLDING; + if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) { + uint8_t r = (uint8_t)AT91C_BASE_SSC->SSC_RHR; v <<= 1; if(r & 1) { @@ -747,86 +302,495 @@ void SimulateTagHfListen(void) DbpString("simulate tag (now type bitsamples)"); } -void UsbPacketReceived(BYTE *packet, int len) +void ReadMem(int addr) { - UsbCommand *c = (UsbCommand *)packet; - - switch(c->cmd) { - case CMD_ACQUIRE_RAW_ADC_SAMPLES_125K: - AcquireRawAdcSamples125k(c->ext1); - break; + const uint8_t *data = ((uint8_t *)addr); - case CMD_MOD_THEN_ACQUIRE_RAW_ADC_SAMPLES_125K: - ModThenAcquireRawAdcSamples125k(c->ext1,c->ext2,c->ext3,c->d.asBytes); - break; + Dbprintf("%x: %02x %02x %02x %02x %02x %02x %02x %02x", + addr, data[0], data[1], data[2], data[3], data[4], data[5], data[6], data[7]); +} - case CMD_ACQUIRE_RAW_BITS_TI_TYPE: - AcquireRawBitsTI(); - break; +/* osimage version information is linked in */ +extern struct version_information version_information; +/* bootrom version information is pointed to from _bootphase1_version_pointer */ +extern char *_bootphase1_version_pointer, _flash_start, _flash_end; +void SendVersion(void) +{ + char temp[48]; /* Limited data payload in USB packets */ + DbpString("Prox/RFID mark3 RFID instrument"); + + /* Try to find the bootrom version information. Expect to find a pointer at + * symbol _bootphase1_version_pointer, perform slight sanity checks on the + * pointer, then use it. + */ + char *bootrom_version = *(char**)&_bootphase1_version_pointer; + if( bootrom_version < &_flash_start || bootrom_version >= &_flash_end ) { + DbpString("bootrom version information appears invalid"); + } else { + FormatVersionInformation(temp, sizeof(temp), "bootrom: ", bootrom_version); + DbpString(temp); + } - case CMD_ACQUIRE_RAW_ADC_SAMPLES_ISO_15693: - AcquireRawAdcSamplesIso15693(); - break; + FormatVersionInformation(temp, sizeof(temp), "os: ", &version_information); + DbpString(temp); - case CMD_BUFF_CLEAR: - BufferClear(); - break; + FpgaGatherVersion(temp, sizeof(temp)); + DbpString(temp); +} - case CMD_READER_ISO_15693: - ReaderIso15693(c->ext1); - break; +#ifdef WITH_LF +// samy's sniff and repeat routine +void SamyRun() +{ + DbpString("Stand-alone mode! No PC necessary."); - case CMD_SIMTAG_ISO_15693: - SimTagIso15693(c->ext1); - break; + // 3 possible options? no just 2 for now +#define OPTS 2 - case CMD_ACQUIRE_RAW_ADC_SAMPLES_ISO_14443: - AcquireRawAdcSamplesIso14443(c->ext1); - break; + int high[OPTS], low[OPTS]; - case CMD_READ_SRI512_TAG: - ReadSRI512Iso14443(c->ext1); - break; + // Oooh pretty -- notify user we're in elite samy mode now + LED(LED_RED, 200); + LED(LED_ORANGE, 200); + LED(LED_GREEN, 200); + LED(LED_ORANGE, 200); + LED(LED_RED, 200); + LED(LED_ORANGE, 200); + LED(LED_GREEN, 200); + LED(LED_ORANGE, 200); + LED(LED_RED, 200); - case CMD_READER_ISO_14443a: - ReaderIso14443a(c->ext1); - break; + int selected = 0; + int playing = 0; - case CMD_SNOOP_ISO_14443: - SnoopIso14443(); - break; + // Turn on selected LED + LED(selected + 1, 0); - case CMD_SNOOP_ISO_14443a: - SnoopIso14443a(); - break; + for (;;) + { + UsbPoll(FALSE); + WDT_HIT(); - case CMD_SIMULATE_TAG_HF_LISTEN: - SimulateTagHfListen(); - break; + // Was our button held down or pressed? + int button_pressed = BUTTON_HELD(1000); + SpinDelay(300); - case CMD_SIMULATE_TAG_ISO_14443: - SimulateIso14443Tag(); - break; + // Button was held for a second, begin recording + if (button_pressed > 0) + { + LEDsoff(); + LED(selected + 1, 0); + LED(LED_RED2, 0); - case CMD_SIMULATE_TAG_ISO_14443a: - SimulateIso14443aTag(c->ext1, c->ext2); // ## Simulate iso14443a tag - pass tag type & UID - break; + // record + DbpString("Starting recording"); - case CMD_MEASURE_ANTENNA_TUNING: - MeasureAntennaTuning(); - break; + // wait for button to be released + while(BUTTON_PRESS()) + WDT_HIT(); - case CMD_LISTEN_READER_FIELD: - ListenReaderField(c->ext1); - break; + /* need this delay to prevent catching some weird data */ + SpinDelay(500); - case CMD_HID_DEMOD_FSK: - CmdHIDdemodFSK(0, 0, 0, 1); // Demodulate HID tag - break; + CmdHIDdemodFSK(1, &high[selected], &low[selected], 0); + Dbprintf("Recorded %x %x %x", selected, high[selected], low[selected]); + LEDsoff(); + LED(selected + 1, 0); + // Finished recording + + // If we were previously playing, set playing off + // so next button push begins playing what we recorded + playing = 0; + } + + // Change where to record (or begin playing) + else if (button_pressed) + { + // Next option if we were previously playing + if (playing) + selected = (selected + 1) % OPTS; + playing = !playing; + + LEDsoff(); + LED(selected + 1, 0); + + // Begin transmitting + if (playing) + { + LED(LED_GREEN, 0); + DbpString("Playing"); + // wait for button to be released + while(BUTTON_PRESS()) + WDT_HIT(); + Dbprintf("%x %x %x", selected, high[selected], low[selected]); + CmdHIDsimTAG(high[selected], low[selected], 0); + DbpString("Done playing"); + if (BUTTON_HELD(1000) > 0) + { + DbpString("Exiting"); + LEDsoff(); + return; + } + + /* We pressed a button so ignore it here with a delay */ + SpinDelay(300); + + // when done, we're done playing, move to next option + selected = (selected + 1) % OPTS; + playing = !playing; + LEDsoff(); + LED(selected + 1, 0); + } + else + while(BUTTON_PRESS()) + WDT_HIT(); + } + } +} +#endif + +/* +OBJECTIVE +Listen and detect an external reader. Determine the best location +for the antenna. + +INSTRUCTIONS: +Inside the ListenReaderField() function, there is two mode. +By default, when you call the function, you will enter mode 1. +If you press the PM3 button one time, you will enter mode 2. +If you press the PM3 button a second time, you will exit the function. + +DESCRIPTION OF MODE 1: +This mode just listens for an external reader field and lights up green +for HF and/or red for LF. This is the original mode of the detectreader +function. + +DESCRIPTION OF MODE 2: +This mode will visually represent, using the LEDs, the actual strength of the +current compared to the maximum current detected. Basically, once you know +what kind of external reader is present, it will help you spot the best location to place +your antenna. You will probably not get some good results if there is a LF and a HF reader +at the same place! :-) + +LIGHT SCHEME USED: +*/ +static const char LIGHT_SCHEME[] = { + 0x0, /* ---- | No field detected */ + 0x1, /* X--- | 14% of maximum current detected */ + 0x2, /* -X-- | 29% of maximum current detected */ + 0x4, /* --X- | 43% of maximum current detected */ + 0x8, /* ---X | 57% of maximum current detected */ + 0xC, /* --XX | 71% of maximum current detected */ + 0xE, /* -XXX | 86% of maximum current detected */ + 0xF, /* XXXX | 100% of maximum current detected */ +}; +static const int LIGHT_LEN = sizeof(LIGHT_SCHEME)/sizeof(LIGHT_SCHEME[0]); + +void ListenReaderField(int limit) +{ + int lf_av, lf_av_new, lf_baseline= 0, lf_count= 0, lf_max; + int hf_av, hf_av_new, hf_baseline= 0, hf_count= 0, hf_max; + int mode=1, display_val, display_max, i; + +#define LF_ONLY 1 +#define HF_ONLY 2 + + LEDsoff(); + + lf_av=lf_max=ReadAdc(ADC_CHAN_LF); + + if(limit != HF_ONLY) { + Dbprintf("LF 125/134 Baseline: %d", lf_av); + lf_baseline = lf_av; + } + + hf_av=hf_max=ReadAdc(ADC_CHAN_HF); + + if (limit != LF_ONLY) { + Dbprintf("HF 13.56 Baseline: %d", hf_av); + hf_baseline = hf_av; + } + + for(;;) { + if (BUTTON_PRESS()) { + SpinDelay(500); + switch (mode) { + case 1: + mode=2; + DbpString("Signal Strength Mode"); + break; + case 2: + default: + DbpString("Stopped"); + LEDsoff(); + return; + break; + } + } + WDT_HIT(); + + if (limit != HF_ONLY) { + if(mode==1) { + if (abs(lf_av - lf_baseline) > 10) LED_D_ON(); + else LED_D_OFF(); + } + + ++lf_count; + lf_av_new= ReadAdc(ADC_CHAN_LF); + // see if there's a significant change + if(abs(lf_av - lf_av_new) > 10) { + Dbprintf("LF 125/134 Field Change: %x %x %x", lf_av, lf_av_new, lf_count); + lf_av = lf_av_new; + if (lf_av > lf_max) + lf_max = lf_av; + lf_count= 0; + } + } + + if (limit != LF_ONLY) { + if (mode == 1){ + if (abs(hf_av - hf_baseline) > 10) LED_B_ON(); + else LED_B_OFF(); + } + + ++hf_count; + hf_av_new= ReadAdc(ADC_CHAN_HF); + // see if there's a significant change + if(abs(hf_av - hf_av_new) > 10) { + Dbprintf("HF 13.56 Field Change: %x %x %x", hf_av, hf_av_new, hf_count); + hf_av = hf_av_new; + if (hf_av > hf_max) + hf_max = hf_av; + hf_count= 0; + } + } + + if(mode == 2) { + if (limit == LF_ONLY) { + display_val = lf_av; + display_max = lf_max; + } else if (limit == HF_ONLY) { + display_val = hf_av; + display_max = hf_max; + } else { /* Pick one at random */ + if( (hf_max - hf_baseline) > (lf_max - lf_baseline) ) { + display_val = hf_av; + display_max = hf_max; + } else { + display_val = lf_av; + display_max = lf_max; + } + } + for (i=0; i= ((display_max/LIGHT_LEN)*i) && display_val <= ((display_max/LIGHT_LEN)*(i+1))) { + if (LIGHT_SCHEME[i] & 0x1) LED_C_ON(); else LED_C_OFF(); + if (LIGHT_SCHEME[i] & 0x2) LED_A_ON(); else LED_A_OFF(); + if (LIGHT_SCHEME[i] & 0x4) LED_B_ON(); else LED_B_OFF(); + if (LIGHT_SCHEME[i] & 0x8) LED_D_ON(); else LED_D_OFF(); + break; + } + } + } + } +} + +void UsbPacketReceived(uint8_t *packet, int len) +{ + UsbCommand *c = (UsbCommand *)packet; + UsbCommand ack; + ack.cmd = CMD_ACK; + + switch(c->cmd) { +#ifdef WITH_LF + case CMD_ACQUIRE_RAW_ADC_SAMPLES_125K: + AcquireRawAdcSamples125k(c->arg[0]); + UsbSendPacket((uint8_t*)&ack, sizeof(ack)); + break; +#endif + +#ifdef WITH_LF + case CMD_MOD_THEN_ACQUIRE_RAW_ADC_SAMPLES_125K: + ModThenAcquireRawAdcSamples125k(c->arg[0],c->arg[1],c->arg[2],c->d.asBytes); + break; +#endif + +#ifdef WITH_ISO15693 + case CMD_ACQUIRE_RAW_ADC_SAMPLES_ISO_15693: + AcquireRawAdcSamplesIso15693(); + break; +#endif + +#ifdef WITH_ISO15693 + case CMD_RECORD_RAW_ADC_SAMPLES_ISO_15693: + RecordRawAdcSamplesIso15693(); + break; + + case CMD_ISO_15693_COMMAND: + DirectTag15693Command(c->arg[0],c->arg[1],c->arg[2],c->d.asBytes); + break; + + case CMD_ISO_15693_FIND_AFI: + BruteforceIso15693Afi(c->arg[0]); + break; + + case CMD_ISO_15693_DEBUG: + SetDebugIso15693(c->arg[0]); + break; + +#endif + case CMD_BUFF_CLEAR: + BufferClear(); + break; + +#ifdef WITH_ISO15693 + case CMD_READER_ISO_15693: + ReaderIso15693(c->arg[0]); + break; +#endif + + case CMD_SIMULATE_TAG_LEGIC_RF: + LegicRfSimulate(c->arg[0], c->arg[1], c->arg[2]); + break; + + case CMD_WRITER_LEGIC_RF: + LegicRfWriter(c->arg[1], c->arg[0]); + break; + + case CMD_READER_LEGIC_RF: + LegicRfReader(c->arg[0], c->arg[1]); + break; + +#ifdef WITH_ISO15693 + case CMD_SIMTAG_ISO_15693: + SimTagIso15693(c->arg[0]); + break; +#endif + +#ifdef WITH_ISO14443b + case CMD_ACQUIRE_RAW_ADC_SAMPLES_ISO_14443: + AcquireRawAdcSamplesIso14443(c->arg[0]); + break; +#endif + +#ifdef WITH_ISO14443b + case CMD_READ_SRI512_TAG: + ReadSRI512Iso14443(c->arg[0]); + break; + case CMD_READ_SRIX4K_TAG: + ReadSRIX4KIso14443(c->arg[0]); + break; +#endif + +#ifdef WITH_ISO14443a + case CMD_READER_ISO_14443a: + ReaderIso14443a(c, &ack); + break; +#endif + +#ifdef WITH_ISO14443a + case CMD_READER_MIFARE: + ReaderMifare(c->arg[0]); + break; +#endif + +#ifdef WITH_ISO14443a + case CMD_MIFARE_READBL: + MifareReadBlock(c->arg[0], c->arg[1], c->arg[2], c->d.asBytes); + break; + case CMD_MIFARE_READSC: + MifareReadSector(c->arg[0], c->arg[1], c->arg[2], c->d.asBytes); + break; + case CMD_MIFARE_WRITEBL: + MifareWriteBlock(c->arg[0], c->arg[1], c->arg[2], c->d.asBytes); + break; + case CMD_MIFARE_NESTED: + MifareNested(c->arg[0], c->arg[1], c->arg[2], c->d.asBytes); + break; + case CMD_MIFARE_CHKKEYS: + MifareChkKeys(c->arg[0], c->arg[1], c->arg[2], c->d.asBytes); + break; + case CMD_SIMULATE_MIFARE_CARD: + Mifare1ksim(c->arg[0], c->arg[1], c->arg[2], c->d.asBytes); + break; + + // emulator + case CMD_MIFARE_SET_DBGMODE: + MifareSetDbgLvl(c->arg[0], c->arg[1], c->arg[2], c->d.asBytes); + break; + case CMD_MIFARE_EML_MEMCLR: + MifareEMemClr(c->arg[0], c->arg[1], c->arg[2], c->d.asBytes); + break; + case CMD_MIFARE_EML_MEMSET: + MifareEMemSet(c->arg[0], c->arg[1], c->arg[2], c->d.asBytes); + break; + case CMD_MIFARE_EML_MEMGET: + MifareEMemGet(c->arg[0], c->arg[1], c->arg[2], c->d.asBytes); + break; + case CMD_MIFARE_EML_CARDLOAD: + MifareECardLoad(c->arg[0], c->arg[1], c->arg[2], c->d.asBytes); + break; + +#endif + +#ifdef WITH_ISO14443b + case CMD_SNOOP_ISO_14443: + SnoopIso14443(); + break; +#endif + +#ifdef WITH_ISO14443a + case CMD_SNOOP_ISO_14443a: + SnoopIso14443a(); + break; +#endif + +#ifdef WITH_ISO14443a + // Makes use of ISO14443a FPGA Firmware + case CMD_SNOOP_ICLASS: + SnoopIClass(); + break; +#endif + + case CMD_SIMULATE_TAG_HF_LISTEN: + SimulateTagHfListen(); + break; + +#ifdef WITH_ISO14443b + case CMD_SIMULATE_TAG_ISO_14443: + SimulateIso14443Tag(); + break; +#endif + +#ifdef WITH_ISO14443a + case CMD_SIMULATE_TAG_ISO_14443a: + SimulateIso14443aTag(c->arg[0], c->arg[1]); // ## Simulate iso14443a tag - pass tag type & UID + break; +#endif + + case CMD_MEASURE_ANTENNA_TUNING: + MeasureAntennaTuning(); + break; + + case CMD_MEASURE_ANTENNA_TUNING_HF: + MeasureAntennaTuningHf(); + break; + + case CMD_LISTEN_READER_FIELD: + ListenReaderField(c->arg[0]); + break; + +#ifdef WITH_LF + case CMD_HID_DEMOD_FSK: + CmdHIDdemodFSK(0, 0, 0, 1); // Demodulate HID tag + break; +#endif + +#ifdef WITH_LF case CMD_HID_SIM_TAG: - CmdHIDsimTAG(c->ext1, c->ext2, 1); // Simulate HID tag by ID + CmdHIDsimTAG(c->arg[0], c->arg[1], 1); // Simulate HID tag by ID break; +#endif case CMD_FPGA_MAJOR_MODE_OFF: // ## FPGA Control FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); @@ -834,80 +798,131 @@ void UsbPacketReceived(BYTE *packet, int len) LED_D_OFF(); // LED D indicates field ON or OFF break; - case CMD_DOWNLOAD_RAW_ADC_SAMPLES_125K: - case CMD_DOWNLOAD_RAW_BITS_TI_TYPE: { +#ifdef WITH_LF + case CMD_READ_TI_TYPE: + ReadTItag(); + break; +#endif + +#ifdef WITH_LF + case CMD_WRITE_TI_TYPE: + WriteTItag(c->arg[0],c->arg[1],c->arg[2]); + break; +#endif + + case CMD_DOWNLOAD_RAW_ADC_SAMPLES_125K: { UsbCommand n; if(c->cmd == CMD_DOWNLOAD_RAW_ADC_SAMPLES_125K) { n.cmd = CMD_DOWNLOADED_RAW_ADC_SAMPLES_125K; } else { n.cmd = CMD_DOWNLOADED_RAW_BITS_TI_TYPE; } - n.ext1 = c->ext1; - memcpy(n.d.asDwords, BigBuf+c->ext1, 12*sizeof(DWORD)); - UsbSendPacket((BYTE *)&n, sizeof(n)); + n.arg[0] = c->arg[0]; + memcpy(n.d.asDwords, BigBuf+c->arg[0], 12*sizeof(uint32_t)); + LED_B_ON(); + UsbSendPacket((uint8_t *)&n, sizeof(n)); + LED_B_OFF(); break; } + case CMD_DOWNLOADED_SIM_SAMPLES_125K: { - BYTE *b = (BYTE *)BigBuf; - memcpy(b+c->ext1, c->d.asBytes, 48); + uint8_t *b = (uint8_t *)BigBuf; + memcpy(b+c->arg[0], c->d.asBytes, 48); + //Dbprintf("copied 48 bytes to %i",b+c->arg[0]); + UsbSendPacket((uint8_t*)&ack, sizeof(ack)); break; } + +#ifdef WITH_LF case CMD_SIMULATE_TAG_125K: LED_A_ON(); - SimulateTagLowFrequency(c->ext1, 1); + SimulateTagLowFrequency(c->arg[0], c->arg[1], 1); LED_A_OFF(); break; -#ifdef WITH_LCD - case CMD_LCD_RESET: - LCDReset(); - break; #endif + case CMD_READ_MEM: - ReadMem(c->ext1); + ReadMem(c->arg[0]); break; + case CMD_SET_LF_DIVISOR: - FpgaSendCommand(FPGA_CMD_SET_DIVISOR, c->ext1); + FpgaSendCommand(FPGA_CMD_SET_DIVISOR, c->arg[0]); + break; + + case CMD_SET_ADC_MUX: + switch(c->arg[0]) { + case 0: SetAdcMuxFor(GPIO_MUXSEL_LOPKD); break; + case 1: SetAdcMuxFor(GPIO_MUXSEL_LORAW); break; + case 2: SetAdcMuxFor(GPIO_MUXSEL_HIPKD); break; + case 3: SetAdcMuxFor(GPIO_MUXSEL_HIRAW); break; + } + break; + + case CMD_VERSION: + SendVersion(); + break; + +#ifdef WITH_LF + case CMD_LF_SIMULATE_BIDIR: + SimulateTagLowFrequencyBidir(c->arg[0], c->arg[1]); break; +#endif + #ifdef WITH_LCD + case CMD_LCD_RESET: + LCDReset(); + break; case CMD_LCD: - LCDSend(c->ext1); + LCDSend(c->arg[0]); break; #endif - case CMD_SETUP_WRITE: + case CMD_SETUP_WRITE: case CMD_FINISH_WRITE: case CMD_HARDWARE_RESET: USB_D_PLUS_PULLUP_OFF(); SpinDelay(1000); SpinDelay(1000); - RSTC_CONTROL = RST_CONTROL_KEY | RST_CONTROL_PROCESSOR_RESET; + AT91C_BASE_RSTC->RSTC_RCR = RST_CONTROL_KEY | AT91C_RSTC_PROCRST; for(;;) { // We're going to reset, and the bootrom will take control. } break; + case CMD_START_FLASH: + if(common_area.flags.bootrom_present) { + common_area.command = COMMON_AREA_COMMAND_ENTER_FLASH_MODE; + } + USB_D_PLUS_PULLUP_OFF(); + AT91C_BASE_RSTC->RSTC_RCR = RST_CONTROL_KEY | AT91C_RSTC_PROCRST; + for(;;); + break; + case CMD_DEVICE_INFO: { + UsbCommand c; + c.cmd = CMD_DEVICE_INFO; + c.arg[0] = DEVICE_INFO_FLAG_OSIMAGE_PRESENT | DEVICE_INFO_FLAG_CURRENT_MODE_OS; + if(common_area.flags.bootrom_present) c.arg[0] |= DEVICE_INFO_FLAG_BOOTROM_PRESENT; + UsbSendPacket((uint8_t*)&c, sizeof(c)); + } + break; default: - DbpString("unknown command"); + Dbprintf("%s: 0x%04x","unknown command:",c->cmd); break; } } -void ReadMem(int addr) +void __attribute__((noreturn)) AppMain(void) { - const DWORD *data = ((DWORD *)addr); - int i; - - DbpString("Reading memory at address"); - DbpIntegers(0, 0, addr); - for (i = 0; i < 8; i+= 2) - DbpIntegers(0, data[i], data[i+1]); -} - -void AppMain(void) -{ - memset(BigBuf,0,sizeof(BigBuf)); SpinDelay(100); + if(common_area.magic != COMMON_AREA_MAGIC || common_area.version != 1) { + /* Initialize common area */ + memset(&common_area, 0, sizeof(common_area)); + common_area.magic = COMMON_AREA_MAGIC; + common_area.version = 1; + } + common_area.flags.osimage_present = 1; + LED_D_OFF(); LED_C_OFF(); LED_B_OFF(); @@ -916,35 +931,37 @@ void AppMain(void) UsbStart(); // The FPGA gets its clock from us from PCK0 output, so set that up. - PIO_PERIPHERAL_B_SEL = (1 << GPIO_PCK0); - PIO_DISABLE = (1 << GPIO_PCK0); - PMC_SYS_CLK_ENABLE = PMC_SYS_CLK_PROGRAMMABLE_CLK_0; + AT91C_BASE_PIOA->PIO_BSR = GPIO_PCK0; + AT91C_BASE_PIOA->PIO_PDR = GPIO_PCK0; + AT91C_BASE_PMC->PMC_SCER = AT91C_PMC_PCK0; // PCK0 is PLL clock / 4 = 96Mhz / 4 = 24Mhz - PMC_PROGRAMMABLE_CLK_0 = PMC_CLK_SELECTION_PLL_CLOCK | - PMC_CLK_PRESCALE_DIV_4; - PIO_OUTPUT_ENABLE = (1 << GPIO_PCK0); + AT91C_BASE_PMC->PMC_PCKR[0] = AT91C_PMC_CSS_PLL_CLK | + AT91C_PMC_PRES_CLK_4; + AT91C_BASE_PIOA->PIO_OER = GPIO_PCK0; // Reset SPI - SPI_CONTROL = SPI_CONTROL_RESET; + AT91C_BASE_SPI->SPI_CR = AT91C_SPI_SWRST; // Reset SSC - SSC_CONTROL = SSC_CONTROL_RESET; + AT91C_BASE_SSC->SSC_CR = AT91C_SSC_SWRST; // Load the FPGA image, which we have stored in our flash. FpgaDownloadAndGo(); + StartTickCount(); + #ifdef WITH_LCD LCDInit(); // test text on different colored backgrounds - LCDString(" The quick brown fox ", &FONT6x8,1,1+8*0,WHITE ,BLACK ); - LCDString(" jumped over the ", &FONT6x8,1,1+8*1,BLACK ,WHITE ); - LCDString(" lazy dog. ", &FONT6x8,1,1+8*2,YELLOW ,RED ); - LCDString(" AaBbCcDdEeFfGgHhIiJj ", &FONT6x8,1,1+8*3,RED ,GREEN ); - LCDString(" KkLlMmNnOoPpQqRrSsTt ", &FONT6x8,1,1+8*4,MAGENTA,BLUE ); - LCDString("UuVvWwXxYyZz0123456789", &FONT6x8,1,1+8*5,BLUE ,YELLOW); - LCDString("`-=[]_;',./~!@#$%^&*()", &FONT6x8,1,1+8*6,BLACK ,CYAN ); - LCDString(" _+{}|:\\\"<>? ",&FONT6x8,1,1+8*7,BLUE ,MAGENTA); + LCDString(" The quick brown fox ", (char *)&FONT6x8,1,1+8*0,WHITE ,BLACK ); + LCDString(" jumped over the ", (char *)&FONT6x8,1,1+8*1,BLACK ,WHITE ); + LCDString(" lazy dog. ", (char *)&FONT6x8,1,1+8*2,YELLOW ,RED ); + LCDString(" AaBbCcDdEeFfGgHhIiJj ", (char *)&FONT6x8,1,1+8*3,RED ,GREEN ); + LCDString(" KkLlMmNnOoPpQqRrSsTt ", (char *)&FONT6x8,1,1+8*4,MAGENTA,BLUE ); + LCDString("UuVvWwXxYyZz0123456789", (char *)&FONT6x8,1,1+8*5,BLUE ,YELLOW); + LCDString("`-=[]_;',./~!@#$%^&*()", (char *)&FONT6x8,1,1+8*6,BLACK ,CYAN ); + LCDString(" _+{}|:\\\"<>? ",(char *)&FONT6x8,1,1+8*7,BLUE ,MAGENTA); // color bands LCDFill(0, 1+8* 8, 132, 8, BLACK); @@ -959,206 +976,12 @@ void AppMain(void) #endif for(;;) { - usbattached = UsbPoll(FALSE); + UsbPoll(FALSE); WDT_HIT(); +#ifdef WITH_LF if (BUTTON_HELD(1000) > 0) SamyRun(); +#endif } } - - -// samy's sniff and repeat routine -void SamyRun() -{ - DbpString("Stand-alone mode! No PC necessary."); - - // 3 possible options? no just 2 for now -#define OPTS 2 - - int high[OPTS], low[OPTS]; - - // Oooh pretty -- notify user we're in elite samy mode now - LED(LED_RED, 200); - LED(LED_ORANGE, 200); - LED(LED_GREEN, 200); - LED(LED_ORANGE, 200); - LED(LED_RED, 200); - LED(LED_ORANGE, 200); - LED(LED_GREEN, 200); - LED(LED_ORANGE, 200); - LED(LED_RED, 200); - - int selected = 0; - int playing = 0; - - // Turn on selected LED - LED(selected + 1, 0); - - for (;;) - { - usbattached = UsbPoll(FALSE); - WDT_HIT(); - - // Was our button held down or pressed? - int button_pressed = BUTTON_HELD(1000); - SpinDelay(300); - - // Button was held for a second, begin recording - if (button_pressed > 0) - { - LEDsoff(); - LED(selected + 1, 0); - LED(LED_RED2, 0); - - // record - DbpString("Starting recording"); - - // wait for button to be released - while(BUTTON_PRESS()) - WDT_HIT(); - - /* need this delay to prevent catching some weird data */ - SpinDelay(500); - - CmdHIDdemodFSK(1, &high[selected], &low[selected], 0); - DbpString("Recorded"); - DbpIntegers(selected, high[selected], low[selected]); - - LEDsoff(); - LED(selected + 1, 0); - // Finished recording - - // If we were previously playing, set playing off - // so next button push begins playing what we recorded - playing = 0; - } - - // Change where to record (or begin playing) - else if (button_pressed) - { - // Next option if we were previously playing - if (playing) - selected = (selected + 1) % OPTS; - playing = !playing; - - LEDsoff(); - LED(selected + 1, 0); - - // Begin transmitting - if (playing) - { - LED(LED_GREEN, 0); - DbpString("Playing"); - // wait for button to be released - while(BUTTON_PRESS()) - WDT_HIT(); - DbpIntegers(selected, high[selected], low[selected]); - CmdHIDsimTAG(high[selected], low[selected], 0); - DbpString("Done playing"); - if (BUTTON_HELD(1000) > 0) - { - DbpString("Exiting"); - LEDsoff(); - return; - } - - /* We pressed a button so ignore it here with a delay */ - SpinDelay(300); - - // when done, we're done playing, move to next option - selected = (selected + 1) % OPTS; - playing = !playing; - LEDsoff(); - LED(selected + 1, 0); - } - else - while(BUTTON_PRESS()) - WDT_HIT(); - } - } -} - - -// listen for external reader -void ListenReaderField(int limit) -{ - int lf_av, lf_av_new, lf_baseline= 0, lf_count= 0; - int hf_av, hf_av_new, hf_baseline= 0, hf_count= 0; - -#define LF_ONLY 1 -#define HF_ONLY 2 - - LED_A_OFF(); - LED_B_OFF(); - LED_C_OFF(); - LED_D_OFF(); - - lf_av= ReadAdc(ADC_CHAN_LF); - - if(limit != HF_ONLY) - { - DbpString("LF 125/134 Baseline:"); - DbpIntegers(lf_av,0,0); - lf_baseline= lf_av; - } - - hf_av= ReadAdc(ADC_CHAN_HF); - - - if (limit != LF_ONLY) - { - DbpString("HF 13.56 Baseline:"); - DbpIntegers(hf_av,0,0); - hf_baseline= hf_av; - } - - for(;;) - { - if(BUTTON_PRESS()) - { - DbpString("Stopped"); - LED_B_OFF(); - LED_D_OFF(); - return; - } - WDT_HIT(); - - - if (limit != HF_ONLY) - { - if (abs(lf_av - lf_baseline) > 10) - LED_D_ON(); - else - LED_D_OFF(); - ++lf_count; - lf_av_new= ReadAdc(ADC_CHAN_LF); - // see if there's a significant change - if(abs(lf_av - lf_av_new) > 10) - { - DbpString("LF 125/134 Field Change:"); - DbpIntegers(lf_av,lf_av_new,lf_count); - lf_av= lf_av_new; - lf_count= 0; - } - } - - if (limit != LF_ONLY) - { - if (abs(hf_av - hf_baseline) > 10) - LED_B_ON(); - else - LED_B_OFF(); - ++hf_count; - hf_av_new= ReadAdc(ADC_CHAN_HF); - // see if there's a significant change - if(abs(hf_av - hf_av_new) > 10) - { - DbpString("HF 13.56 Field Change:"); - DbpIntegers(hf_av,hf_av_new,hf_count); - hf_av= hf_av_new; - hf_count= 0; - } - } - } -}