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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(uint8_t *config_data); | |
65 | ||
66 | sample_config *getSamplingConfig(); | |
67 | ||
68 | void printConfig(); | |
69 | ||
70 | ||
71 | #endif // LFSAMPLING_H |