From a3ec09ac29b26ebd1cc1235f7ecdcd6a3d74cd60 Mon Sep 17 00:00:00 2001
From: Yuval Adam <_@yuv.al>
Date: Fri, 23 Apr 2021 14:44:23 +0300
Subject: Start implementing lots of R82xx logic

---
 src/tuners/fc0013.rs |   2 +-
 src/tuners/mod.rs    |   2 +-
 src/tuners/r820t.rs  | 123 ++++++++++++++++++++++++++++++++++++++++++++++-----
 3 files changed, 115 insertions(+), 12 deletions(-)

(limited to 'src')

diff --git a/src/tuners/fc0013.rs b/src/tuners/fc0013.rs
index 5b5e1f2..d486f87 100644
--- a/src/tuners/fc0013.rs
+++ b/src/tuners/fc0013.rs
@@ -41,7 +41,7 @@ impl Tuner for FC0013 {
         unimplemented!()
     }
 
-    fn set_bw(&self, _bw: u32, _handle: &RtlSdrDeviceHandle) {
+    fn set_bandwidth(&self, _bw: u32, _handle: &RtlSdrDeviceHandle) {
         unimplemented!()
     }
 
diff --git a/src/tuners/mod.rs b/src/tuners/mod.rs
index 626fc9e..9a7c9ce 100644
--- a/src/tuners/mod.rs
+++ b/src/tuners/mod.rs
@@ -18,7 +18,7 @@ pub trait Tuner {
     fn init(&self, handle: &RtlSdrDeviceHandle);
     fn exit(&self);
     fn set_freq(&self, freq: u32);
-    fn set_bw(&self, bw: u32, handle: &RtlSdrDeviceHandle);
+    fn set_bandwidth(&self, bw: u16, rate: u32, handle: &RtlSdrDeviceHandle);
     fn set_gain(&self, gain: u32);
     fn set_if_gain(&self, if_gain: u32);
     fn set_gain_mode(&self, mode: bool);
diff --git a/src/tuners/r820t.rs b/src/tuners/r820t.rs
index b8064ac..c083a05 100644
--- a/src/tuners/r820t.rs
+++ b/src/tuners/r820t.rs
@@ -1,27 +1,125 @@
 use super::{Tuner, TunerInfo};
 use usb::RtlSdrDeviceHandle;
 
-const R82XX_IF_FREQ: u32 = 3570000;
+pub const TUNER_ID: &str = "r820t";
+pub const TUNER_NAME: &str = "Rafael Micro R820T";
+
+const I2C_ADDR: u8 = 0x34;
+const CHECK_ADDR: u8 = 0x00;
+const CHECK_VAL: u8 = 0x69;
+const IF_FREQ: u32 = 3570000;
+const REG_SHADOW_START: u8 = 5;
+const NUM_REGS: usize = 30;
+const NUM_IMR: usize = 5;
+const IMR_TRIAL: u8 = 9;
+
+enum Chip {
+    R820T,
+    R620D,
+    R828D,
+    R828,
+    R828S,
+    R820C,
+}
+
+enum TunerType {
+    Radio,
+    AnalogTv,
+    DigitalTv,
+}
+
+enum XtalCapValue {
+    XtalLowCap30P,
+    XtalLowCap20P,
+    XtalLowCap10P,
+    XtalLowCap0P,
+    XtalHighCap0P,
+}
 
 pub struct R820T {
     pub device: TunerInfo,
-    // pub handle: &'a RtlSdrDeviceHandle,
+    regs: [u8; NUM_REGS],
+    buf: [u8; NUM_REGS + 1],
+    xtal_cal_sel: XtalCapValue,
+    pll: u16, // kHz
+    int_freq: u32,
+    fil_cal_code: u8,
+    input: u8,
+    has_lock: i16,  // bool?
+    init_done: i16, // bool?
+    delsys: u32,
+    tuner_type: TunerType,
+    bw: u32, // MHz
 }
 
-pub const TUNER_ID: &str = "r820t";
+pub struct FreqRange {
+    freq: u32,
+    open_d: u8,
+    rf_mux_ploy: u8,
+    tf_c: u8,
+    xtal_cap20p: u8,
+    xtal_cap10p: u8,
+    xtal_cap0p: u8,
+}
+
+pub struct Config {
+    i2c_addr: u8,
+    xtal: u32,
+    chip: Chip,
+    max_i2c_msg_len: u16,
+    use_predetect: i16, // bool?
+}
 
 pub const TUNER_INFO: TunerInfo = TunerInfo {
     id: TUNER_ID,
-    name: "Rafael Micro R820T",
-    i2c_addr: 0x34,
-    check_addr: 0x00,
-    check_val: 0x69,
+    name: TUNER_NAME,
+    i2c_addr: I2C_ADDR,
+    check_addr: CHECK_ADDR,
+    check_val: CHECK_VAL,
     // gains: vec![
     //     0, 9, 14, 27, 37, 77, 87, 125, 144, 157, 166, 197, 207, 229, 254, 280, 297, 328, 338, 364,
     //     372, 386, 402, 421, 434, 439, 445, 480, 496,
     // ],
 };
 
+// starts from REG_SHADOW_START
+const INITIAL_REGS: [u8; NUM_REGS] = vec![
+    0x83, 0x32, 0x75, 0xc0, 0x40, 0xd6, 0x6c, 0xf5, 0x63, 0x75, 0x68, 0x6c, 0x83, 0x80, 0x00, 0x0f,
+    0x00, 0xc0, 0x30, 0x48, 0xcc, 0x60, 0x00, 0x54, 0xae, 0x4a, 0xc0,
+];
+
+const FREQ_RANGES: [(u32, u8, u8, u8, u8, u8, u8); 21] = [
+    (000, 0x08, 0x02, 0xdf, 0x02, 0x01, 0x00),
+    (050, 0x08, 0x02, 0xbe, 0x02, 0x01, 0x00),
+    (055, 0x08, 0x02, 0x8b, 0x02, 0x01, 0x00),
+    (060, 0x08, 0x02, 0x7b, 0x02, 0x01, 0x00),
+    (065, 0x08, 0x02, 0x69, 0x02, 0x01, 0x00),
+    (070, 0x08, 0x02, 0x58, 0x02, 0x01, 0x00),
+    (075, 0x00, 0x02, 0x44, 0x02, 0x01, 0x00),
+    (080, 0x00, 0x02, 0x44, 0x02, 0x01, 0x00),
+    (090, 0x00, 0x02, 0x34, 0x01, 0x01, 0x00),
+    (100, 0x00, 0x02, 0x34, 0x01, 0x01, 0x00),
+    (110, 0x00, 0x02, 0x24, 0x01, 0x01, 0x00),
+    (120, 0x00, 0x02, 0x24, 0x01, 0x01, 0x00),
+    (140, 0x00, 0x02, 0x14, 0x01, 0x01, 0x00),
+    (180, 0x00, 0x02, 0x13, 0x00, 0x00, 0x00),
+    (220, 0x00, 0x02, 0x13, 0x00, 0x00, 0x00),
+    (250, 0x00, 0x02, 0x11, 0x00, 0x00, 0x00),
+    (280, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00),
+    (310, 0x00, 0x41, 0x00, 0x00, 0x00, 0x00),
+    (450, 0x00, 0x41, 0x00, 0x00, 0x00, 0x00),
+    (588, 0x00, 0x40, 0x00, 0x00, 0x00, 0x00),
+    (650, 0x00, 0x40, 0x00, 0x00, 0x00, 0x00),
+];
+
+const XTAL_CAPS: [(u8, XtalCapValue); 5] = [
+    (0x0b, XtalCapValue::XtalLowCap30P),
+    (0x02, XtalCapValue::XtalLowCap20P),
+    (0x01, XtalCapValue::XtalLowCap10P),
+    (0x00, XtalCapValue::XtalLowCap0P),
+    (0x10, XtalCapValue::XtalHighCap0P),
+];
+
 impl R820T {
     pub fn new(handle: &RtlSdrDeviceHandle) -> R820T {
         let tuner = R820T { device: TUNER_INFO };
@@ -46,7 +144,7 @@ impl Tuner for R820T {
 
         // the R82XX use 3.57 MHz IF for the DVB-T 6 MHz mode, and
         // 4.57 MHz for the 8 MHz mode
-        handle.set_if_freq(R82XX_IF_FREQ);
+        handle.set_if_freq(IF_FREQ);
 
         // enable spectrum inversion
         handle.demod_write_reg(1, 0x15, 0x01, 1);
@@ -58,8 +156,13 @@ impl Tuner for R820T {
         unimplemented!()
     }
 
-    fn set_bw(&self, _bw: u32, _handle: &RtlSdrDeviceHandle) {
-        unimplemented!()
+    fn set_bandwidth(&self, bw: u16, rate: u32, handle: &RtlSdrDeviceHandle) {
+        let mut rc: u16;
+        let mut real_bw: u16 = 0;
+        let mut reg_0a: u8;
+        let mut reg_0b: u8;
+
+        if bw > 7000000 {}
     }
 
     fn set_gain(&self, _gain: u32) {
-- 
cgit v1.3.1