#ifndef LFSAMPLING_H #define LFSAMPLING_H /** * acquisition of Cotag LF signal. Similar to other LF, since the Cotag has such long datarate RF/384 * and is Manchester?, we directly gather the manchester data into bigbuff **/ void doCotagAcquisition(size_t sample_size); uint32_t doCotagAcquisitionManchester(void); /** * acquisition of T55x7 LF signal. Similart to other LF, but adjusted with @marshmellows thresholds * the data is collected in BigBuf. **/ void doT55x7Acquisition(size_t sample_size); /** * Initializes the FPGA for reader-mode (field on), and acquires the samples. * @return number of bits sampled **/ uint32_t SampleLF(bool silent); /** * Initializes the FPGA for snoop-mode (field off), and acquires the samples. * @return number of bits sampled **/ uint32_t SnoopLF(); /** * @brief Does sample acquisition, ignoring the config values set in the sample_config. * This method is typically used by tag-specific readers who just wants to read the samples * the normal way * @param trigger_threshold * @param silent * @return number of bits sampled */ uint32_t DoAcquisition_default(int trigger_threshold, bool silent); /** * @brief Does sample acquisition, using the config values set in the sample_config. * @param trigger_threshold * @param silent * @return number of bits sampled */ uint32_t DoAcquisition_config( bool silent); /** * Setup the FPGA to listen for samples. This method downloads the FPGA bitstream * if not already loaded, sets divisor and starts up the antenna. * @param divisor : 1, 88> 255 or negative ==> 134.8 KHz * 0 or 95 ==> 125 KHz * **/ void LFSetupFPGAForADC(int divisor, bool lf_field); /** * Called from the USB-handler to set the sampling configuration * The sampling config is used for std reading and snooping. * * Other functions may read samples and ignore the sampling config, * such as functions to read the UID from a prox tag or similar. * * Values set to '0' implies no change (except for averaging) * @brief setSamplingConfig * @param sc */ void setSamplingConfig(sample_config *sc); sample_config * getSamplingConfig(); void printConfig(); #endif // LFSAMPLING_H