[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)
{
	BigBuf_free();
	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 = dest + 1;
		}
	}
	//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)
{
	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()) {
		WDT_HIT();
		if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) {
			r = (uint16_t)AT91C_BASE_SSC->SSC_RHR;
			if (!(trigger_cnt == triggersToSkip) && ( (r >> 8) >= 240)) 
			{
				Dbprintf("Trigger kicked! Value: %d.", r >> 8);
				trigger_cnt++;
				break;
			} 
		}
	}
	if(!BUTTON_PRESS()) {
		Dbprintf("Trigger kicked! Value: %d, Dumping Samples Hispeed now.", r >> 8);
		int waitcount = samplesToSkip; // lets wait 40000 ticks of pck0
		while(waitcount != 0) {
			if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) {
				waitcount--;
			}
		}

		optimizedSnoop();
	}

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