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//
// r820.swift
// r820sdr-init
//
// Created by Jacky Jack on 15/03/2022.
//
//https://www.kodeco.com/7181017-unsafe-swift-using-pointers-and-interacting-with-c
// THis is just a wrapper for fun
import Foundation
import libr820
/// Gets the number of rtlsdr's detected in system
/// - Returns: return number of devices detected
///
func getDeviceCount() -> UInt32 {
return rtlsdr_get_device_count()
}
/// Search for device index from serial number
/// - Parameters:
/// - serial: serial string of device
/// - Returns: return the index number if found, -1 if not found
///
func getIndexBySerial(serial: String) -> Int32
{
return rtlsdr_get_index_by_serial(serial);//is this ok?
}
//TODO: investigate getDeviceName
/*
func getDeviceName(index: UInt32) -> String {
return rtlsdr_get_device_name(index)
}*/
//TODO: investigate getDeviceUsbString
/*
func getDeviceUsbString() {
return rtlsdr_get_device_usb_strings();
}*/
/// Wrapper for librtlsdr functions that's not operating on device
public class R820API {
func R820() {
print("Start device API")
}
func getDeviceCount() -> UInt32 {
return rtlsdr_get_device_count()
}
}
/// Wrapper for rtlsdr that works with device API
public class R820Tuner {
var deviceInitalized:Bool = false
var dev: OpaquePointer? = nil
/**
Function to initialise tunner, do nothing at the moment
*/
func R820Tuner() {
print("Initialise tunner")
}
/// open device by Index, checks if device allready were initialised within class
/// - Parameters:
/// - index: device index to open
func open(index devId: UInt32) {
let err = rtlsdr_open(&dev,devId)
if (err != 0) {
print("Error couldnt open device")
return
}
deviceInitalized = true
}
/// close device if it was opened before
func close() {
if self.deviceInitalized {
rtlsdr_close(dev);
dev = nil
}
}
func setXtalFreq(rtlFreq: UInt32, tunnerFreq: UInt32) -> Int32 {
return rtlsdr_set_xtal_freq(dev, rtlFreq, tunnerFreq);
}
func getXtalFreq(rtlFreq: UnsafeMutablePointer<UInt32>?, tunnerFreq: UnsafeMutablePointer<UInt32>?)->Int32{
return rtlsdr_get_xtal_freq(dev, rtlFreq, tunnerFreq)
}
func getUsbStrings(manufact: UnsafeMutablePointer<CChar>?, product: UnsafeMutablePointer<CChar>?, serial: UnsafeMutablePointer<CChar>?) -> Int32{
return rtlsdr_get_usb_strings(dev, manufact, product, serial)
}
func writeEeprom(data: UnsafeMutablePointer<UInt8>?,offset: UInt8, len: UInt16) -> Int32 {
return rtlsdr_write_eeprom(dev, data, offset, len)
}
func readEeprom(data: UnsafeMutablePointer<UInt8>?,offset: UInt8, len: UInt16) -> Int32 {
return rtlsdr_read_eeprom(dev, data, offset, len)
}
func setCenterFreq(freq: UInt32) -> Int32{
return rtlsdr_set_center_freq(dev, freq);
}
func getCenterFreq()->UInt32 {
return rtlsdr_get_center_freq(dev)
}
func setFreqCorrection(ppm: Int32) -> Int32 {
return rtlsdr_set_freq_correction(dev, ppm)
}
func getFreqCorrection() -> Int32 {
return rtlsdr_get_freq_correction(dev)
}
func getTunerType() -> rtlsdr_tuner {
return rtlsdr_get_tuner_type(dev)
}
func getTunerGains(gains: UnsafeMutablePointer<Int32>?) -> Int32 {
return rtlsdr_get_tuner_gains(dev, gains)
}
func setTunerGain(gain: Int32) -> Int32 {
return rtlsdr_set_tuner_gain(dev,gain);
}
func setTunnerBandwidth(bw: UInt32) -> Int32 {
return rtlsdr_set_tuner_bandwidth(dev, bw)
}
func setTunerIfGain(stage: Int32, gain: Int32) -> Int32 {
return rtlsdr_set_tuner_if_gain(dev,stage,gain)
}
func setTunerGainMode(manual: Int32) -> Int32 {
return rtlsdr_set_tuner_gain_mode(dev, manual)
}
func setSampleRate(samplerate: UInt32) -> Int32 {
return rtlsdr_set_sample_rate(dev, samplerate)
}
func getSampleRate() -> UInt32 {
return rtlsdr_get_sample_rate(dev)
}
func setTestmode(on: Int32) -> Int32 {
return rtlsdr_set_testmode(dev, on);
}
func setAgcMode(on: Int32) -> Int32 {
return rtlsdr_set_agc_mode(dev, on);
}
func setDirectSampling(on: Int32) -> Int32 {
return rtlsdr_set_direct_sampling(dev, on)
}
func getDirectSampling() -> Int32 {
return rtlsdr_get_direct_sampling(dev)
}
func setOffsetTuning(on: Int32) -> Int32 {
return rtlsdr_set_offset_tuning(dev, on)
}
func getOffsetTuning() -> Int32 {
return rtlsdr_get_offset_tuning(dev)
}
func resetBuffer() -> Int32 {
return rtlsdr_reset_buffer(dev)
}
/// Read the data from buffer in sync manner
/// - Parameters:
/// - buf: input buffer
/// - len: input buffer length
/// - n_read: number of bytes received
/// - Returns: -1 if there is no device, 0 on success or one of LIBUSB error
/// on success, the number of bytes actually transferred
/// LIBUSB_ERROR_TIMEOUT if the transfer timed out
/// LIBUSB_ERROR_PIPE if the control request was not supported by the device
/// LIBUSB_ERROR_NO_DEVICE if the device has been disconnected
/// LIBUSB_ERROR_BUSY if called from event handling context
/// LIBUSB_ERROR_INVALID_PARAM if the transfer size is larger than the operating system and/or hardware can support (see Transfer length limitations)
/// another LIBUSB_ERROR code on other failures
///
func readSync(buf:UnsafeMutableRawPointer?,len: Int32,n_read:UnsafeMutablePointer<Int32>?) -> Int32 {
return rtlsdr_read_sync(dev, buf, len, n_read);
}
func waitAsync(cb: rtlsdr_read_async_cb_t?, ctx:UnsafeMutableRawPointer?) -> Int32{
return rtlsdr_wait_async(dev,cb, ctx);
}
func readAsync(cb: rtlsdr_read_async_cb_t,ctx:UnsafeMutableRawPointer?, buf_num: UInt32, buf_len: UInt32) -> Int32 {
return rtlsdr_read_async(dev, cb, ctx, buf_num, buf_len)
}
/// Cancel async operation for sighandlders
/// to exit from callbacks
func cancelAsync() -> Int32 {
return rtlsdr_cancel_async(dev);
}
func setBiasTee(on: Int32) -> Int32 {
return rtlsdr_set_bias_tee(dev, on)
}
func setBiasTeeGpio(gpio: Int32, on: Int32) -> Int32 {
return rtlsdr_set_bias_tee_gpio(dev,gpio, on)
}
}
|
