X-Git-Url: http://cvs.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/161c40fb528ca13e5f7337b2796cf22e2de64ce5..4b5d696c179edc687ba0b61c7d96ea0ef54cad44:/armsrc/appmain.c diff --git a/armsrc/appmain.c b/armsrc/appmain.c index e6d40abc..573a3a71 100644 --- a/armsrc/appmain.c +++ b/armsrc/appmain.c @@ -28,12 +28,10 @@ #include "BigBuf.h" #include "mifareutil.h" #include "pcf7931.h" +#include "i2c.h" #ifdef WITH_LCD #include "LCD.h" #endif -#ifdef WITH_SMARTCARD - #include "i2c.h" -#endif // Craig Young - 14a stand-alone code @@ -143,7 +141,7 @@ void Dbhexdump(int len, uint8_t *d, bool bAsci) { static int ReadAdc(int ch) { // Note: ADC_MODE_PRESCALE and ADC_MODE_SAMPLE_HOLD_TIME are set to the maximum allowed value. - // AMPL_HI is are high impedance (10MOhm || 1MOhm) output, the input capacitance of the ADC is 12pF (typical). This results in a time constant + // AMPL_HI is a high impedance (10MOhm || 1MOhm) output, the input capacitance of the ADC is 12pF (typical). This results in a time constant // of RC = (0.91MOhm) * 12pF = 10.9us. Even after the maximum configurable sample&hold time of 40us the input capacitor will not be fully charged. // // The maths are: @@ -162,7 +160,7 @@ static int ReadAdc(int ch) while(!(AT91C_BASE_ADC->ADC_SR & ADC_END_OF_CONVERSION(ch))) {}; - return AT91C_BASE_ADC->ADC_CDR[ch]; + return AT91C_BASE_ADC->ADC_CDR[ch] & 0x3ff; } int AvgAdc(int ch) // was static - merlok @@ -177,6 +175,26 @@ int AvgAdc(int ch) // was static - merlok return (a + 15) >> 5; } +static int AvgAdc_Voltage_HF(void) +{ + int AvgAdc_Voltage_Low, AvgAdc_Voltage_High; + + AvgAdc_Voltage_Low= (MAX_ADC_HF_VOLTAGE_LOW * AvgAdc(ADC_CHAN_HF_LOW)) >> 10; + // if voltage range is about to be exceeded, use high voltage ADC channel if available (RDV40 only) + if (AvgAdc_Voltage_Low > MAX_ADC_HF_VOLTAGE_LOW - 300) { + AvgAdc_Voltage_High = (MAX_ADC_HF_VOLTAGE_HIGH * AvgAdc(ADC_CHAN_HF_HIGH)) >> 10; + if (AvgAdc_Voltage_High >= AvgAdc_Voltage_Low) { + return AvgAdc_Voltage_High; + } + } + return AvgAdc_Voltage_Low; +} + +static int AvgAdc_Voltage_LF(void) +{ + return (MAX_ADC_LF_VOLTAGE * AvgAdc(ADC_CHAN_LF)) >> 10; +} + void MeasureAntennaTuningLfOnly(int *vLf125, int *vLf134, int *peakf, int *peakv, uint8_t LF_Results[]) { int i, adcval = 0, peak = 0; @@ -198,7 +216,7 @@ void MeasureAntennaTuningLfOnly(int *vLf125, int *vLf134, int *peakf, int *peakv WDT_HIT(); FpgaSendCommand(FPGA_CMD_SET_DIVISOR, i); SpinDelay(20); - adcval = ((MAX_ADC_LF_VOLTAGE * AvgAdc(ADC_CHAN_LF)) >> 10); + adcval = AvgAdc_Voltage_LF(); if (i==95) *vLf125 = adcval; // voltage at 125Khz if (i==89) *vLf134 = adcval; // voltage at 134Khz @@ -223,9 +241,8 @@ void MeasureAntennaTuningHfOnly(int *vHf) FpgaDownloadAndGo(FPGA_BITSTREAM_HF); FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_RX_XCORR); SpinDelay(20); - *vHf = (MAX_ADC_HF_VOLTAGE * AvgAdc(ADC_CHAN_HF)) >> 10; + *vHf = AvgAdc_Voltage_HF(); LED_A_OFF(); - return; } @@ -267,8 +284,8 @@ void MeasureAntennaTuningHf(void) FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_RX_XCORR); for (;;) { - SpinDelay(20); - vHf = (MAX_ADC_HF_VOLTAGE * AvgAdc(ADC_CHAN_HF)) >> 10; + SpinDelay(500); + vHf = AvgAdc_Voltage_HF(); Dbprintf("%d mV",vHf); if (BUTTON_PRESS()) break; @@ -293,6 +310,7 @@ 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, _bootrom_start, _bootrom_end, __data_src_start__; + void SendVersion(void) { char temp[USB_CMD_DATA_SIZE]; /* Limited data payload in USB packets */ @@ -315,11 +333,16 @@ void SendVersion(void) for (int i = 0; i < fpga_bitstream_num; i++) { strncat(VersionString, fpga_version_information[i], sizeof(VersionString) - strlen(VersionString) - 1); - if (i < fpga_bitstream_num - 1) { - strncat(VersionString, "\n", sizeof(VersionString) - strlen(VersionString) - 1); - } + strncat(VersionString, "\n", sizeof(VersionString) - strlen(VersionString) - 1); } - + + // test availability of SmartCard slot + if (I2C_is_available()) { + strncat(VersionString, "SmartCard Slot: available\n", sizeof(VersionString) - strlen(VersionString) - 1); + } else { + strncat(VersionString, "SmartCard Slot: not available\n", sizeof(VersionString) - strlen(VersionString) - 1); + } + // Send Chip ID and used flash memory uint32_t text_and_rodata_section_size = (uint32_t)&__data_src_start__ - (uint32_t)&_flash_start; uint32_t compressed_data_section_size = common_area.arg1; @@ -828,13 +851,15 @@ 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_max; - int hf_av, hf_av_new, hf_baseline= 0, hf_max; + int lf_av, lf_av_new=0, lf_baseline= 0, lf_max; + int hf_av, hf_av_new=0, hf_baseline= 0, hf_max; int mode=1, display_val, display_max, i; -#define LF_ONLY 1 -#define HF_ONLY 2 -#define REPORT_CHANGE 10 // report new values only if they have changed at least by REPORT_CHANGE +#define LF_ONLY 1 +#define HF_ONLY 2 +#define REPORT_CHANGE_PERCENT 5 // report new values only if they have changed at least by REPORT_CHANGE_PERCENT +#define MIN_HF_FIELD 300 // in mode 1 signal HF field greater than MIN_HF_FIELD above baseline +#define MIN_LF_FIELD 1200 // in mode 1 signal LF field greater than MIN_LF_FIELD above baseline // switch off FPGA - we don't want to measure our own signal @@ -843,23 +868,23 @@ void ListenReaderField(int limit) LEDsoff(); - lf_av = lf_max = AvgAdc(ADC_CHAN_LF); + lf_av = lf_max = AvgAdc_Voltage_LF(); if(limit != HF_ONLY) { - Dbprintf("LF 125/134kHz Baseline: %dmV", (MAX_ADC_LF_VOLTAGE * lf_av) >> 10); + Dbprintf("LF 125/134kHz Baseline: %dmV", lf_av); lf_baseline = lf_av; } - hf_av = hf_max = AvgAdc(ADC_CHAN_HF); - + hf_av = hf_max = AvgAdc_Voltage_HF(); + if (limit != LF_ONLY) { - Dbprintf("HF 13.56MHz Baseline: %dmV", (MAX_ADC_HF_VOLTAGE * hf_av) >> 10); + Dbprintf("HF 13.56MHz Baseline: %dmV", hf_av); hf_baseline = hf_av; } for(;;) { + SpinDelay(500); if (BUTTON_PRESS()) { - SpinDelay(500); switch (mode) { case 1: mode=2; @@ -872,21 +897,22 @@ void ListenReaderField(int limit) return; break; } + while (BUTTON_PRESS()); } WDT_HIT(); if (limit != HF_ONLY) { if(mode == 1) { - if (ABS(lf_av - lf_baseline) > REPORT_CHANGE) + if (lf_av - lf_baseline > MIN_LF_FIELD) LED_D_ON(); else LED_D_OFF(); } - lf_av_new = AvgAdc(ADC_CHAN_LF); + lf_av_new = AvgAdc_Voltage_LF(); // see if there's a significant change - if(ABS(lf_av - lf_av_new) > REPORT_CHANGE) { - Dbprintf("LF 125/134kHz Field Change: %5dmV", (MAX_ADC_LF_VOLTAGE * lf_av_new) >> 10); + if (ABS((lf_av - lf_av_new)*100/(lf_av?lf_av:1)) > REPORT_CHANGE_PERCENT) { + Dbprintf("LF 125/134kHz Field Change: %5dmV", lf_av_new); lf_av = lf_av_new; if (lf_av > lf_max) lf_max = lf_av; @@ -895,16 +921,17 @@ void ListenReaderField(int limit) if (limit != LF_ONLY) { if (mode == 1){ - if (ABS(hf_av - hf_baseline) > REPORT_CHANGE) + if (hf_av - hf_baseline > MIN_HF_FIELD) LED_B_ON(); else LED_B_OFF(); } - hf_av_new = AvgAdc(ADC_CHAN_HF); + hf_av_new = AvgAdc_Voltage_HF(); + // see if there's a significant change - if(ABS(hf_av - hf_av_new) > REPORT_CHANGE) { - Dbprintf("HF 13.56MHz Field Change: %5dmV", (MAX_ADC_HF_VOLTAGE * hf_av_new) >> 10); + if (ABS((hf_av - hf_av_new)*100/(hf_av?hf_av:1)) > REPORT_CHANGE_PERCENT) { + Dbprintf("HF 13.56MHz Field Change: %5dmV", hf_av_new); hf_av = hf_av_new; if (hf_av > hf_max) hf_max = hf_av; @@ -1436,7 +1463,7 @@ void __attribute__((noreturn)) AppMain(void) LED_A_OFF(); // Init USB device - usb_enable(); + usb_enable(); // The FPGA gets its clock from us from PCK0 output, so set that up. AT91C_BASE_PIOA->PIO_BSR = GPIO_PCK0;