[proxmark3-svn] / armsrc / hfsnoop.c

#include "proxmark3.h"
#include "apps.h"
#include "BigBuf.h"
#include "util.h"

static void RAMFUNC optimizedSnoop(void);

static void RAMFUNC optimizedSnoop(void)
{
	int n = BigBuf_max_traceLen() / sizeof(uint16_t); // take all memory

	uint16_t *dest = (uint16_t *)BigBuf_get_addr();
	uint16_t *destend = dest + n;

	AT91C_BASE_SSC->SSC_RFMR = SSC_FRAME_MODE_BITS_IN_WORD(16); // Setting Frame mode, 16 bits per word
	// Reading data loop
	while(dest <= destend)
	{
		if(AT91C_BASE_SSC->SSC_SR & AT91C_SSC_RXRDY)
		{
			*dest = (uint16_t)(AT91C_BASE_SSC->SSC_RHR);
			++dest;
		}
	}
	//Resetting Frame mode (First set in fpgaloader.c)
	AT91C_BASE_SSC->SSC_RFMR = SSC_FRAME_MODE_BITS_IN_WORD(8) | AT91C_SSC_MSBF | SSC_FRAME_MODE_WORDS_PER_TRANSFER(0);
}

void HfSnoop(int samplesToSkip, int triggersToSkip)
{
	BigBuf_free(); BigBuf_Clear();
	
	Dbprintf("Skipping first %d sample pairs, Skipping %d triggers.\n", samplesToSkip, triggersToSkip);
	bool trigger_cnt;

	LED_D_ON();
	// Select correct configs
	FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
	// Set up the synchronous serial port
	FpgaSetupSsc();
	// connect Demodulated Signal to ADC:
	SetAdcMuxFor(GPIO_MUXSEL_HIPKD);
	FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_SNOOP);
	SpinDelay(100);
	
	AT91C_BASE_SSC->SSC_RFMR = SSC_FRAME_MODE_BITS_IN_WORD(16); // Setting Frame Mode For better performance on high speed data transfer.

	trigger_cnt = 0;
	uint16_t r = 0;
	while(!BUTTON_PRESS() && !usb_poll_validate_length() ) {
		WDT_HIT();
		if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) {
			r = (uint16_t)AT91C_BASE_SSC->SSC_RHR;
			r = MAX(r & 0xff, r >> 8); 
			if (r >= 240) 
			{
				
				if (++trigger_cnt > triggersToSkip) {
				break;
			} 
		}
	}
	}

	if(!BUTTON_PRESS()) {
		int waitcount = samplesToSkip; // lets wait 40000 ticks of pck0
		while(waitcount != 0) {
			
			if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY))
				--waitcount;
		}
		optimizedSnoop();
		Dbprintf("Trigger kicked! Value: %d, Dumping Samples Hispeed now.", r);
	}

	DbpString("HF Snoop end");
	FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
	LED_D_OFF();
}
Commit	Line	Data
1d0ccbe0	1	#include "proxmark3.h"
	2	#include "apps.h"
	3	#include "BigBuf.h"
	4	#include "util.h"
	5
	6	static void RAMFUNC optimizedSnoop(void);
	7
	8	static void RAMFUNC optimizedSnoop(void)
	9	{
1d0ccbe0	10	int n = BigBuf_max_traceLen() / sizeof(uint16_t); // take all memory
	11
	12	uint16_t dest = (uint16_t )BigBuf_get_addr();
	13	uint16_t *destend = dest + n;
	14
	15	AT91C_BASE_SSC->SSC_RFMR = SSC_FRAME_MODE_BITS_IN_WORD(16); // Setting Frame mode, 16 bits per word
	16	// Reading data loop
	17	while(dest <= destend)
	18	{
	19	if(AT91C_BASE_SSC->SSC_SR & AT91C_SSC_RXRDY)
	20	{
	21	*dest = (uint16_t)(AT91C_BASE_SSC->SSC_RHR);
5eceba29	22	++dest;
1d0ccbe0	23	}
	24	}
	25	//Resetting Frame mode (First set in fpgaloader.c)
	26	AT91C_BASE_SSC->SSC_RFMR = SSC_FRAME_MODE_BITS_IN_WORD(8) \| AT91C_SSC_MSBF \| SSC_FRAME_MODE_WORDS_PER_TRANSFER(0);
	27	}
	28
	29	void HfSnoop(int samplesToSkip, int triggersToSkip)
	30	{
aaa1a9a2	31	BigBuf_free(); BigBuf_Clear();
aaa1a9a2	32
1d0ccbe0	33	Dbprintf("Skipping first %d sample pairs, Skipping %d triggers.\n", samplesToSkip, triggersToSkip);
1d0ccbe0	34	bool trigger_cnt;
aaa1a9a2	35
1d0ccbe0	36	LED_D_ON();
	37	// Select correct configs
	38	FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
	39	// Set up the synchronous serial port
	40	FpgaSetupSsc();
	41	// connect Demodulated Signal to ADC:
	42	SetAdcMuxFor(GPIO_MUXSEL_HIPKD);
	43	FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_SNOOP);
	44	SpinDelay(100);
7c5f2ced	45
1d0ccbe0	46	AT91C_BASE_SSC->SSC_RFMR = SSC_FRAME_MODE_BITS_IN_WORD(16); // Setting Frame Mode For better performance on high speed data transfer.
	47
	48	trigger_cnt = 0;
	49	uint16_t r = 0;
7c5f2ced	50	while(!BUTTON_PRESS() && !usb_poll_validate_length() ) {
1d0ccbe0	51	WDT_HIT();
	52	if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) {
	53	r = (uint16_t)AT91C_BASE_SSC->SSC_RHR;
7c5f2ced	54	r = MAX(r & 0xff, r >> 8);
7c5f2ced	55	if (r >= 240)
1d0ccbe0	56	{
5eceba29	57
7c5f2ced	58	if (++trigger_cnt > triggersToSkip) {
1d0ccbe0	59	break;
	60	}
	61	}
	62	}
7c5f2ced	63	}
7c5f2ced	64
1d0ccbe0	65	if(!BUTTON_PRESS()) {
1d0ccbe0	66	int waitcount = samplesToSkip; // lets wait 40000 ticks of pck0
1d0ccbe0	67	while(waitcount != 0) {
5eceba29	68
	69	if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY))
	70	--waitcount;
1d0ccbe0	71	}
1d0ccbe0	72	optimizedSnoop();
7c5f2ced	73	Dbprintf("Trigger kicked! Value: %d, Dumping Samples Hispeed now.", r);
1d0ccbe0	74	}
	75
	76	DbpString("HF Snoop end");
	77	FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
	78	LED_D_OFF();
	79	}
	80