typedef enum { HACKRF_VENDOR_REQUEST_SET_TRANSCEIVER_MODE = 1, HACKRF_VENDOR_REQUEST_MAX2837_WRITE = 2, HACKRF_VENDOR_REQUEST_MAX2837_READ = 3, HACKRF_VENDOR_REQUEST_SI5351C_WRITE = 4, HACKRF_VENDOR_REQUEST_SI5351C_READ = 5, HACKRF_VENDOR_REQUEST_SAMPLE_RATE_SET = 6, HACKRF_...