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1 #ifndef LFSAMPLING_H
2 #define LFSAMPLING_H
3
4 /**
5 * acquisition of Cotag LF signal. Similar to other LF, since the Cotag has such long datarate RF/384
6 * and is Manchester?, we directly gather the manchester data into bigbuff
7 **/
8 void doCotagAcquisition(size_t sample_size);
9 uint32_t doCotagAcquisitionManchester(void);
10
11 /**
12 * Initializes the FPGA for reader-mode (field on), and acquires the samples.
13 * @return number of bits sampled
14 **/
15 uint32_t SampleLF(bool silent, int sample_size);
16
17 /**
18 * Initializes the FPGA for snoop-mode (field off), and acquires the samples.
19 * @return number of bits sampled
20 **/
21 uint32_t SnoopLF();
22
23 // adds sample size to default options
24 uint32_t DoPartialAcquisition(int trigger_threshold, bool silent, int sample_size, int cancel_after);
25
26 /**
27 * @brief Does sample acquisition, ignoring the config values set in the sample_config.
28 * This method is typically used by tag-specific readers who just wants to read the samples
29 * the normal way
30 * @param trigger_threshold
31 * @param silent
32 * @return number of bits sampled
33 */
34 uint32_t DoAcquisition_default(int trigger_threshold, bool silent);
35 /**
36 * @brief Does sample acquisition, using the config values set in the sample_config.
37 * @param trigger_threshold
38 * @param silent
39 * @return number of bits sampled
40 */
41
42 uint32_t DoAcquisition_config(bool silent, int sample_size);
43
44 /**
45 * Setup the FPGA to listen for samples. This method downloads the FPGA bitstream
46 * if not already loaded, sets divisor and starts up the antenna.
47 * @param divisor : 1, 88> 255 or negative ==> 134.8 KHz
48 * 0 or 95 ==> 125 KHz
49 *
50 **/
51 void LFSetupFPGAForADC(int divisor, bool lf_field);
52
53 /**
54 * Called from the USB-handler to set the sampling configuration
55 * The sampling config is used for std reading and snooping.
56 *
57 * Other functions may read samples and ignore the sampling config,
58 * such as functions to read the UID from a prox tag or similar.
59 *
60 * Values set to '0' implies no change (except for averaging)
61 * @brief setSamplingConfig
62 * @param sc
63 */
64 void setSamplingConfig(sample_config *sc);
65
66 sample_config * getSamplingConfig();
67
68 void printConfig();
69
70
71 #endif // LFSAMPLING_H
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