changes to mifare plus code (#706)

[proxmark3-svn] / armsrc / appmain.c

diff --git a/armsrc/appmain.c b/armsrc/appmain.c
index e6d40abceb7e580ec4453b0a45a1c9509967c6d6..573a3a71251cadb61bb9a983b142cd1ac32ee8aa 100644 (file)
--- a/armsrc/appmain.c
+++ b/armsrc/appmain.c
@@ -28,12 +28,10 @@
 #include "BigBuf.h"
 #include "mifareutil.h"
 #include "pcf7931.h"
 #include "BigBuf.h"
 #include "mifareutil.h"
 #include "pcf7931.h"

+#include "i2c.h"

 #ifdef WITH_LCD
  #include "LCD.h"
 #endif
 #ifdef WITH_LCD
  #include "LCD.h"
 #endif

-#ifdef WITH_SMARTCARD
- #include "i2c.h"
-#endif

 
 
 // Craig Young - 14a stand-alone code
 
 
 // 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. 
 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:
        // 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))) {};
        
 
        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
 }
 
 int AvgAdc(int ch) // was static - merlok


@@ -177,6 +175,26 @@ int AvgAdc(int ch) // was static - merlok
        return (a + 15) >> 5;
 }
 
        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;
 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);
                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
 
                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);
        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();
        LED_A_OFF();

-

        return;
 }
 
        return;
 }
 


@@ -267,8 +284,8 @@ void MeasureAntennaTuningHf(void)
        FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_RX_XCORR);
 
        for (;;) {
        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;
 
                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__;
 
 /* 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 */
 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);
 
        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;
        // 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)
 {
 
 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;
 
        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
 
 
        // switch off FPGA - we don't want to measure our own signal


@@ -843,23 +868,23 @@ void ListenReaderField(int limit)
 
        LEDsoff();
 
 
        LEDsoff();
 

-       lf_av = lf_max = AvgAdc(ADC_CHAN_LF);
+       lf_av = lf_max = AvgAdc_Voltage_LF();

 
        if(limit != HF_ONLY) {
 
        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;
        }
 
                lf_baseline = lf_av;
        }
 

-       hf_av = hf_max = AvgAdc(ADC_CHAN_HF);
-
+       hf_av = hf_max = AvgAdc_Voltage_HF();
+       

        if (limit != LF_ONLY) {
        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(;;) {
                hf_baseline = hf_av;
        }
 
        for(;;) {

+               SpinDelay(500);

                if (BUTTON_PRESS()) {
                if (BUTTON_PRESS()) {

-                       SpinDelay(500);

                        switch (mode) {
                                case 1:
                                        mode=2;
                        switch (mode) {
                                case 1:
                                        mode=2;


@@ -872,21 +897,22 @@ void ListenReaderField(int limit)
                                        return;
                                        break;
                        }
                                        return;
                                        break;
                        }

+                       while (BUTTON_PRESS());

                }
                WDT_HIT();
 
                if (limit != HF_ONLY) {
                        if(mode == 1) {
                }
                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();
                        }
 
                                        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
                        // 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;
                                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 (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();
                        }
 
                                        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
                        // 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;
                                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
        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;
 
        // The FPGA gets its clock from us from PCK0 output, so set that up.
        AT91C_BASE_PIOA->PIO_BSR = GPIO_PCK0;