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