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extern crate log;
extern crate pretty_env_logger;
extern crate rusb;
mod tuners;
mod usb;
use log::{error, info, trace, warn};
use tuners::*;
use usb::RtlSdrDeviceHandle;
const INTERFACE_ID: u8 = 0;
const KNOWN_DEVICES: [(u16, u16, &str); 2] = [
(0x0bda, 0x2832, "Generic RTL2832U"),
(0x0bda, 0x2838, "Generic RTL2832U OEM"),
];
const KNOWN_TUNERS: [TunerInfo; 2] = [r820t::TUNER_INFO, fc0013::TUNER_INFO];
pub struct RtlSdr {
// ctx: rusb::Context,
// device: UsbDevice,
iface_id: u8,
}
impl RtlSdr {
pub fn new() -> RtlSdr {
pretty_env_logger::init();
RtlSdr {
// ctx: rusb::Context::new().unwrap(),
iface_id: INTERFACE_ID,
}
}
/// Open a new RTL-SDR device
pub fn open(&mut self) {
for dev in rusb::devices().unwrap().iter() {
let desc = dev.device_descriptor().unwrap();
let vid = desc.vendor_id();
let pid = desc.product_id();
trace!("Found USB device with vid {} and pid {}", vid, pid);
for kd in KNOWN_DEVICES.iter() {
if kd.0 == vid && kd.1 == pid {
info!("Found device {} {{{:04x}:{:04x}}}", kd.2, vid, pid);
let usb_handle = dev.open().unwrap();
let mut handle = RtlSdrDeviceHandle::new(usb_handle, self.iface_id);
// let kernel_driver_attached = handle.detach_kernel_driver();
let _iface = handle.claim_interface();
handle.test_write();
// reset device if write didn't succeed
handle.init_baseband();
handle.set_i2c_repeater(true);
{
let tuner_id = match self.search_tuner(&handle) {
Some(tid) => {
info!("Got tuner ID {}", tid);
tid
}
None => {
error!("Could not find a value tuner, aborting.");
return;
}
};
let tuner: Box<dyn Tuner> = match tuner_id {
r820t::TUNER_ID => Box::new(r820t::R820T::new(&handle)),
fc0013::TUNER_ID => Box::new(fc0013::FC0013::new(&handle)),
_ => {
error!("Could not find any valid tuner, aborting.");
return;
}
};
info!("Found tuner {}", tuner.display());
}
}
}
}
}
/// Probe all known tuners at their I2C addresses
/// and search for expected return values
fn search_tuner(&mut self, handle: &RtlSdrDeviceHandle) -> Option<&str> {
for tuner_info in KNOWN_TUNERS.iter() {
let regval = handle.i2c_read_reg(tuner_info.i2c_addr, tuner_info.check_addr);
trace!(
"Probing I2C address {:#02x} checking address {:#02x}",
tuner_info.i2c_addr,
tuner_info.check_addr,
);
match regval {
Ok(val) => {
trace!(
"Expecting value {:#02x}, got value {:#02x}",
tuner_info.check_val,
val
);
if val == tuner_info.check_val {
return Some(tuner_info.id);
}
}
Err(_) => {
warn!("Reading failed, continuing");
}
};
}
None
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_init() {
let mut rtlsdr = RtlSdr::new();
rtlsdr.open();
}
}
|
