X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/ebd7aaf9e7560bfbffb9781bd31eebeed4996005..aae8787c039b0f8c87a34877c92297e8b7a89914:/armsrc/appmain.c?ds=sidebyside diff --git a/armsrc/appmain.c b/armsrc/appmain.c index f42b0209..9696b008 100644 --- a/armsrc/appmain.c +++ b/armsrc/appmain.c @@ -5,7 +5,6 @@ // Edits by Gerhard de Koning Gans, Sep 2007 (##) //----------------------------------------------------------------------------- - #include #include #include "apps.h" @@ -14,10 +13,6 @@ #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; //============================================================================= // A buffer where we can queue things up to be sent through the FPGA, for @@ -29,7 +24,6 @@ BYTE ToSend[256]; int ToSendMax; static int ToSendBit; - void BufferClear(void) { memset(BigBuf,0,sizeof(BigBuf)); @@ -69,8 +63,8 @@ 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; @@ -85,8 +79,8 @@ void DbpString(char *str) 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; @@ -99,185 +93,6 @@ void DbpIntegers(int x1, int x2, int x3) SpinDelay(50); } -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); -} - -// 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; - - 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); -} - -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); - } - - // now do the read - DoAcquisition125k(at134khz); -} - -void AcquireTiType(void) -{ - int i; - int n = 5000; - - // clear buffer - memset(BigBuf,0,sizeof(BigBuf)); - - // Set up the synchronous serial port - PIO_DISABLE = (1<= n) return; - } - WDT_HIT(); - } - - // return stolen pin ro SSP - PIO_DISABLE = (1<= 8) { + dest[i] = v; + v = 0; + p = 0; + i++; - while(PIO_PIN_DATA_STATUS & (1<= n) { + break; + } } - WDT_HIT(); } - - i++; - if(i == period) i = 0; } + DbpString("simulate tag (now type bitsamples)"); } -// compose fc/8 fc/10 waveform -static void fc(int c, int *n) { - BYTE *dest = (BYTE *)BigBuf; - int idx; - - // for when we want an fc8 pattern every 4 logical bits - if(c==0) { - dest[((*n)++)]=1; - dest[((*n)++)]=1; - dest[((*n)++)]=0; - dest[((*n)++)]=0; - dest[((*n)++)]=0; - dest[((*n)++)]=0; - dest[((*n)++)]=0; - dest[((*n)++)]=0; - } - // an fc/8 encoded bit is a bit pattern of 11000000 x6 = 48 samples - if(c==8) { - for (idx=0; idx<6; idx++) { - dest[((*n)++)]=1; - dest[((*n)++)]=1; - dest[((*n)++)]=0; - dest[((*n)++)]=0; - dest[((*n)++)]=0; - dest[((*n)++)]=0; - dest[((*n)++)]=0; - dest[((*n)++)]=0; - } - } +void ReadMem(int addr) +{ + const DWORD *data = ((DWORD *)addr); + int i; - // an fc/10 encoded bit is a bit pattern of 1110000000 x5 = 50 samples - if(c==10) { - for (idx=0; idx<5; idx++) { - dest[((*n)++)]=1; - dest[((*n)++)]=1; - dest[((*n)++)]=1; - dest[((*n)++)]=0; - dest[((*n)++)]=0; - dest[((*n)++)]=0; - dest[((*n)++)]=0; - dest[((*n)++)]=0; - dest[((*n)++)]=0; - dest[((*n)++)]=0; - } - } + DbpString("Reading memory at address"); + DbpIntegers(0, 0, addr); + for (i = 0; i < 8; i+= 2) + DbpIntegers(0, data[i], data[i+1]); } -// prepare a waveform pattern in the buffer based on the ID given then -// simulate a HID tag until the button is pressed -static void CmdHIDsimTAG(int hi, int lo, int ledcontrol) +/* osimage version information is linked in */ +extern struct version_information version_information; +void SendVersion(void) { - int n=0, i=0; - /* - HID tag bitstream format - The tag contains a 44bit unique code. This is sent out MSB first in sets of 4 bits - A 1 bit is represented as 6 fc8 and 5 fc10 patterns - A 0 bit is represented as 5 fc10 and 6 fc8 patterns - A fc8 is inserted before every 4 bits - A special start of frame pattern is used consisting a0b0 where a and b are neither 0 - nor 1 bits, they are special patterns (a = set of 12 fc8 and b = set of 10 fc10) - */ - - if (hi>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 - } - } - - 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 - } + char temp[48]; /* Limited data payload in USB packets */ + DbpString("Prox/RFID mark3 RFID instrument"); + + /* Try to find the bootrom version information. For the time being, expect + * to find a pointer at address 0x1001fc, perform slight sanity checks on + * the pointer, then use it. + */ + void *bootrom_version = *(void**)0x1001fc; + if( bootrom_version < (void*)0x100000 || bootrom_version > (void*)0x101000 ) { + DbpString("bootrom version information appears invalid"); + } else { + FormatVersionInformation(temp, sizeof(temp), "bootrom: ", bootrom_version); + DbpString(temp); } - - if (ledcontrol) - LED_A_ON(); - SimulateTagLowFrequency(n, ledcontrol); - - if (ledcontrol) - LED_A_OFF(); + + FormatVersionInformation(temp, sizeof(temp), "os: ", &version_information); + DbpString(temp); + + FpgaGatherVersion(temp, sizeof(temp)); + DbpString(temp); } -// 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) +// samy's sniff and repeat routine +void SamyRun() { - BYTE *dest = (BYTE *)BigBuf; - int m=0, n=0, i=0, idx=0, found=0, lastval=0; - DWORD hi=0, lo=0; + DbpString("Stand-alone mode! No PC necessary."); - FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz - FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_READER); + // 3 possible options? no just 2 for now +#define OPTS 2 - // Connect the A/D to the peak-detected low-frequency path. - SetAdcMuxFor(GPIO_MUXSEL_LOPKD); + int high[OPTS], low[OPTS]; - // Give it a bit of time for the resonant antenna to settle. - SpinDelay(50); + // 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); - // Now set up the SSC to get the ADC samples that are now streaming at us. - FpgaSetupSsc(); + int selected = 0; + int playing = 0; - for(;;) { + // Turn on selected LED + LED(selected + 1, 0); + + for (;;) + { + UsbPoll(FALSE); 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; - } - } - } + // Was our button held down or pressed? + int button_pressed = BUTTON_HELD(1000); + SpinDelay(300); - // FSK demodulator + // Button was held for a second, begin recording + if (button_pressed > 0) + { + LEDsoff(); + LED(selected + 1, 0); + LED(LED_RED2, 0); - // 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]) ) + // 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) { - 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) + 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) { - *high = hi; - *low = lo; - return; + DbpString("Exiting"); + LEDsoff(); + return; } - hi=0; - lo=0; - found=0; - } + + /* 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(); } - WDT_HIT(); } } -void SimulateTagHfListen(void) + +/* +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) { - BYTE *dest = (BYTE *)BigBuf; - int n = sizeof(BigBuf); - BYTE v = 0; - int i; - int p = 0; + 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; - // We're using this mode just so that I can test it out; the simulated - // tag mode would work just as well and be simpler. - FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_RX_XCORR | FPGA_HF_READER_RX_XCORR_848_KHZ | FPGA_HF_READER_RX_XCORR_SNOOP); +#define LF_ONLY 1 +#define HF_ONLY 2 - // We need to listen to the high-frequency, peak-detected path. - SetAdcMuxFor(GPIO_MUXSEL_HIPKD); + LEDsoff(); - FpgaSetupSsc(); + lf_av=lf_max=ReadAdc(ADC_CHAN_LF); + + if(limit != HF_ONLY) { + DbpString("LF 125/134 Baseline:"); + DbpIntegers(lf_av,0,0); + lf_baseline= lf_av; + } + + hf_av=hf_max=ReadAdc(ADC_CHAN_HF); + + if (limit != LF_ONLY) { + DbpString("HF 13.56 Baseline:"); + DbpIntegers(hf_av,0,0); + hf_baseline= hf_av; + } - i = 0; for(;;) { - if(SSC_STATUS & (SSC_STATUS_TX_READY)) { - SSC_TRANSMIT_HOLDING = 0xff; + if (BUTTON_PRESS()) { + SpinDelay(500); + switch (mode) { + case 1: + mode=2; + DbpString("Signal Strength Mode"); + break; + case 2: + default: + DbpString("Stopped"); + LEDsoff(); + return; + break; + } } - if(SSC_STATUS & (SSC_STATUS_RX_READY)) { - BYTE r = (BYTE)SSC_RECEIVE_HOLDING; + WDT_HIT(); - v <<= 1; - if(r & 1) { - v |= 1; + if (limit != HF_ONLY) { + if(mode==1) { + if (abs(lf_av - lf_baseline) > 10) LED_D_ON(); + else LED_D_OFF(); } - p++; - - if(p >= 8) { - dest[i] = v; - v = 0; - p = 0; - i++; + + ++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; + if (lf_av > lf_max) + lf_max = lf_av; + lf_count= 0; + } + } - if(i >= n) { + 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) { + DbpString("HF 13.56 Field Change:"); + DbpIntegers(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; } } } } - DbpString("simulate tag (now type bitsamples)"); } void UsbPacketReceived(BYTE *packet, int len) @@ -770,10 +536,6 @@ void UsbPacketReceived(BYTE *packet, int len) ModThenAcquireRawAdcSamples125k(c->ext1,c->ext2,c->ext3,c->d.asBytes); break; - case CMD_ACQUIRE_RAW_BITS_TI_TYPE: - AcquireRawBitsTI(); - break; - case CMD_ACQUIRE_RAW_ADC_SAMPLES_ISO_15693: AcquireRawAdcSamplesIso15693(); break; @@ -844,8 +606,15 @@ 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: { + case CMD_READ_TI_TYPE: + ReadTItag(); + break; + + case CMD_WRITE_TI_TYPE: + WriteTItag(c->ext1,c->ext2,c->ext3); + break; + + 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; @@ -867,23 +636,24 @@ void UsbPacketReceived(BYTE *packet, int len) SimulateTagLowFrequency(c->ext1, 1); LED_A_OFF(); break; -#ifdef WITH_LCD - case CMD_LCD_RESET: - LCDReset(); - break; -#endif case CMD_READ_MEM: ReadMem(c->ext1); break; case CMD_SET_LF_DIVISOR: FpgaSendCommand(FPGA_CMD_SET_DIVISOR, c->ext1); break; + case CMD_VERSION: + SendVersion(); + break; #ifdef WITH_LCD + case CMD_LCD_RESET: + LCDReset(); + break; case CMD_LCD: LCDSend(c->ext1); break; #endif - case CMD_SETUP_WRITE: + case CMD_SETUP_WRITE: case CMD_FINISH_WRITE: case CMD_HARDWARE_RESET: USB_D_PLUS_PULLUP_OFF(); @@ -895,24 +665,12 @@ void UsbPacketReceived(BYTE *packet, int len) } break; - default: DbpString("unknown command"); break; } } -void ReadMem(int addr) -{ - 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)); @@ -969,289 +727,10 @@ void AppMain(void) #endif for(;;) { - usbattached = UsbPoll(FALSE); + UsbPoll(FALSE); WDT_HIT(); if (BUTTON_HELD(1000) > 0) SamyRun(); } } - - -// 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(); - } - } -} - - -/* -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: - -Light scheme | Descriptiong ----------------------------------------------------- - ---- | No field detected - X--- | 14% of maximum current detected - -X-- | 29% of maximum current detected - --X- | 43% of maximum current detected - ---X | 57% of maximum current detected - --XX | 71% of maximum current detected - -XXX | 86% of maximum current detected - XXXX | 100% of maximum current detected - -TODO: -Add the LF part for MODE 2 - -*/ -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, hf_max; - int mode=1; - -#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=hf_max=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()) { - SpinDelay(500); - switch (mode) { - case 1: - mode=2; - DbpString("Signal Strength Mode"); - break; - case 2: - default: - DbpString("Stopped"); - LED_A_OFF(); - LED_B_OFF(); - LED_C_OFF(); - LED_D_OFF(); - return; - break; - } - } - 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) { - if (mode == 1) - LED_B_ON(); - if (mode == 2) { - if ( hf_av>(hf_max/7)*6) { - LED_A_ON(); LED_B_ON(); LED_C_ON(); LED_D_ON(); - } - if ( (hf_av>(hf_max/7)*5) && (hf_av<=(hf_max/7)*6) ) { - LED_A_ON(); LED_B_ON(); LED_C_OFF(); LED_D_ON(); - } - if ( (hf_av>(hf_max/7)*4) && (hf_av<=(hf_max/7)*5) ) { - LED_A_OFF(); LED_B_ON(); LED_C_OFF(); LED_D_ON(); - } - if ( (hf_av>(hf_max/7)*3) && (hf_av<=(hf_max/7)*4) ) { - LED_A_OFF(); LED_B_OFF(); LED_C_OFF(); LED_D_ON(); - } - if ( (hf_av>(hf_max/7)*2) && (hf_av<=(hf_max/7)*3) ) { - LED_A_OFF(); LED_B_ON(); LED_C_OFF(); LED_D_OFF(); - } - if ( (hf_av>(hf_max/7)*1) && (hf_av<=(hf_max/7)*2) ) { - LED_A_ON(); LED_B_OFF(); LED_C_OFF(); LED_D_OFF(); - } - if ( (hf_av>(hf_max/7)*0) && (hf_av<=(hf_max/7)*1) ) { - LED_A_OFF(); LED_B_OFF(); LED_C_ON(); LED_D_OFF(); - } - } - } else { - if (mode == 1) { - LED_B_OFF(); - } - if (mode == 2) { - LED_A_OFF(); LED_B_OFF(); LED_C_OFF(); LED_D_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; - if (hf_av > hf_max) - hf_max = hf_av; - hf_count= 0; - } - } - } -} -