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1 //-----------------------------------------------------------------------------

2 // Jonathan Westhues, April 2006

3 // iZsh <izsh at fail0verflow.com>, 2014

4 //

5 // This code is licensed to you under the terms of the GNU GPL, version 2 or,

6 // at your option, any later version. See the LICENSE.txt file for the text of

7 // the license.

8 //-----------------------------------------------------------------------------

9 // Routines to load the FPGA image, and then to configure the FPGA's major

10 // mode once it is configured.

11 //-----------------------------------------------------------------------------

12

13 void FpgaSendCommand(uint16_t cmd, uint16_t v);

14 void FpgaWriteConfWord(uint8_t v);

15 void FpgaDownloadAndGo(int bitstream_version);

16 void FpgaGatherVersion(int bitstream_version, char *dst, int len);

17 void FpgaSetupSsc(void);

18 void SetupSpi(int mode);

19 bool FpgaSetupSscDma(uint8_t *buf, int len);

20 void Fpga_print_status();

21 int FpgaGetCurrent();

22 #define FpgaDisableSscDma(void) AT91C_BASE_PDC_SSC->PDC_PTCR = AT91C_PDC_RXTDIS;

23 #define FpgaEnableSscDma(void) AT91C_BASE_PDC_SSC->PDC_PTCR = AT91C_PDC_RXTEN;

24 void SetAdcMuxFor(uint32_t whichGpio);

25

26 // definitions for multiple FPGA config files support

27 #define FPGA_BITSTREAM_MAX 2 // the total number of FPGA bitstreams (configs)

28 #define FPGA_BITSTREAM_ERR 0

29 #define FPGA_BITSTREAM_LF 1

30 #define FPGA_BITSTREAM_HF 2

31

32

33 // Definitions for the FPGA commands.

34 #define FPGA_CMD_SET_CONFREG (1<<12)

35 #define FPGA_CMD_SET_DIVISOR (2<<12)

36 #define FPGA_CMD_SET_USER_BYTE1 (3<<12)

37 // Definitions for the FPGA configuration word.

38 // LF

39 #define FPGA_MAJOR_MODE_LF_ADC (0<<5)

40 #define FPGA_MAJOR_MODE_LF_EDGE_DETECT (1<<5)

41 #define FPGA_MAJOR_MODE_LF_PASSTHRU (2<<5)

42 // HF

43 #define FPGA_MAJOR_MODE_HF_READER_TX (0<<5)

44 #define FPGA_MAJOR_MODE_HF_READER_RX_XCORR (1<<5)

45 #define FPGA_MAJOR_MODE_HF_SIMULATOR (2<<5)

46 #define FPGA_MAJOR_MODE_HF_ISO14443A (3<<5)

47 #define FPGA_MAJOR_MODE_HF_SNOOP (4<<5)

48 // BOTH

49 #define FPGA_MAJOR_MODE_OFF (7<<5)

50 // Options for LF_ADC

51 #define FPGA_LF_ADC_READER_FIELD (1<<0)

52 // Options for LF_EDGE_DETECT

53 #define FPGA_CMD_SET_EDGE_DETECT_THRESHOLD FPGA_CMD_SET_USER_BYTE1

54 #define FPGA_LF_EDGE_DETECT_READER_FIELD (1<<0)

55 #define FPGA_LF_EDGE_DETECT_TOGGLE_MODE (1<<1)

56 // Options for the HF reader, tx to tag

57 #define FPGA_HF_READER_TX_SHALLOW_MOD (1<<0)

58 // Options for the HF reader, correlating against rx from tag

59 #define FPGA_HF_READER_RX_XCORR_848_KHZ (1<<0)

60 #define FPGA_HF_READER_RX_XCORR_SNOOP (1<<1)

61 #define FPGA_HF_READER_RX_XCORR_QUARTER_FREQ (1<<2)

62 // Options for the HF simulated tag, how to modulate

63 #define FPGA_HF_SIMULATOR_NO_MODULATION (0<<0)

64 #define FPGA_HF_SIMULATOR_MODULATE_BPSK (1<<0)

65 #define FPGA_HF_SIMULATOR_MODULATE_212K (2<<0)

66 #define FPGA_HF_SIMULATOR_MODULATE_424K (4<<0)

67 #define FPGA_HF_SIMULATOR_MODULATE_424K_8BIT 0x5//101

68

69 // Options for ISO14443A

70 #define FPGA_HF_ISO14443A_SNIFFER (0<<0)

71 #define FPGA_HF_ISO14443A_TAGSIM_LISTEN (1<<0)

72 #define FPGA_HF_ISO14443A_TAGSIM_MOD (2<<0)

73 #define FPGA_HF_ISO14443A_READER_LISTEN (3<<0)

74 #define FPGA_HF_ISO14443A_READER_MOD (4<<0)