From 54b4607c46094de0333f474af492981adf39a6cd Mon Sep 17 00:00:00 2001
From: Yuval Adam <_@yuv.al>
Date: Wed, 28 Apr 2021 17:21:11 +0300
Subject: Fix set_if_freq() handling in init

---
 src/lib.rs              | 14 +++-----------
 src/usb.rs              | 14 ++++++++++++++
 src/utils/rustl_test.rs |  2 +-
 3 files changed, 18 insertions(+), 12 deletions(-)

diff --git a/src/lib.rs b/src/lib.rs
index ca9d634..557268a 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -111,7 +111,7 @@ impl RtlSdr {
 
     pub fn set_freq(&self) {}
 
-    pub fn set_sample_rate(self, samp_rate: u32) {
+    pub fn set_sample_rate(&mut self, samp_rate: u32) {
         let real_rsamp_ratio: u32;
 
         // check if the rate is supported by the resampler
@@ -131,6 +131,7 @@ impl RtlSdr {
 
         self.handle.set_i2c_repeater(true);
         self.tuner
+            .as_mut()
             .unwrap()
             .set_bandwidth(real_rate as u32, &self.handle);
         self.handle.set_i2c_repeater(false);
@@ -149,16 +150,7 @@ impl RtlSdr {
     }
 
     pub fn set_if_freq(&self, freq: u32) {
-        let rtl_xtal: u32 = DEF_RTL_XTAL_FREQ; // need to apply PPM correction
-        let base = 1u32 << 22;
-        let if_freq: i32 = (freq as f64 * base as f64 / rtl_xtal as f64 * -1f64) as i32;
-
-        let tmp = ((if_freq >> 16) as u16) & 0x3f;
-        self.handle.demod_write_reg(1, 0x19, tmp, 1);
-        let tmp = ((if_freq >> 8) as u16) & 0xff;
-        self.handle.demod_write_reg(1, 0x1a, tmp, 1);
-        let tmp = if_freq as u16 & 0xff;
-        self.handle.demod_write_reg(1, 0x1b, tmp, 1);
+        self.handle.set_if_freq(freq);
     }
 
     pub fn set_test_mode(&self, on: bool) {
diff --git a/src/usb.rs b/src/usb.rs
index 3499692..d3f4d28 100644
--- a/src/usb.rs
+++ b/src/usb.rs
@@ -245,6 +245,20 @@ impl RtlSdrDeviceHandle {
         self.demod_write_reg(0, 0x0d, 0x83, 1);
     }
 
+    pub fn set_if_freq(&self, freq: u32) {
+        const DEF_RTL_XTAL_FREQ: u32 = 28800000;
+        let rtl_xtal: u32 = DEF_RTL_XTAL_FREQ; // need to apply PPM correction
+        let base = 1u32 << 22;
+        let if_freq: i32 = (freq as f64 * base as f64 / rtl_xtal as f64 * -1f64) as i32;
+
+        let tmp = ((if_freq >> 16) as u16) & 0x3f;
+        self.demod_write_reg(1, 0x19, tmp, 1);
+        let tmp = ((if_freq >> 8) as u16) & 0xff;
+        self.demod_write_reg(1, 0x1a, tmp, 1);
+        let tmp = if_freq as u16 & 0xff;
+        self.demod_write_reg(1, 0x1b, tmp, 1);
+    }
+
     pub fn reset_buffer(&self) {
         self.write_reg(BLOCK_USBB, ADDR_USB_EPA_CTL, 0x1002, 2);
         self.write_reg(BLOCK_USBB, ADDR_USB_EPA_CTL, 0x0000, 2);
diff --git a/src/utils/rustl_test.rs b/src/utils/rustl_test.rs
index b71f094..b923a54 100644
--- a/src/utils/rustl_test.rs
+++ b/src/utils/rustl_test.rs
@@ -3,7 +3,7 @@ const DEFAULT_BUF_LENGTH: usize = 16 * 16384;
 
 pub fn main() {
     println!("Starting rustl_test");
-    let r = rustl_sdr::RtlSdr::new();
+    let mut r = rustl_sdr::RtlSdr::new();
     r.set_sample_rate(DEFAULT_SAMPLE_RATE);
     r.set_test_mode(true);
     r.reset_buffer();
-- 
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