From b086057ba096920abef3870ad0cefa2c80a343e2 Mon Sep 17 00:00:00 2001
From: Quentin ADAM <quentin.adam@waxzce.org>
Date: Tue, 19 May 2020 01:33:28 +0200
Subject: [PATCH] add packet sending support

---
 Cargo.lock |  7 +++++++
 Cargo.toml |  1 +
 src/lib.rs | 28 ++++++++++++++++++++++++++++
 3 files changed, 36 insertions(+)

diff --git a/Cargo.lock b/Cargo.lock
index bac6220..41a7df9 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -42,6 +42,11 @@ name = "cfg-if"
 version = "0.1.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "hex"
+version = "0.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "lazy_static"
 version = "1.4.0"
@@ -133,6 +138,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 name = "rn2903"
 version = "0.2.0"
 dependencies = [
+ "hex 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "quick-error 1.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "serialport 3.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -192,6 +198,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum bitflags 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "cf1de2fe8c75bc145a2f577add951f8134889b4795d47466a54a5c846d691693"
 "checksum cc 1.0.48 (registry+https://github.com/rust-lang/crates.io-index)" = "f52a465a666ca3d838ebbf08b241383421412fe7ebb463527bba275526d89f76"
 "checksum cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)" = "4785bdd1c96b2a846b2bd7cc02e86b6b3dbf14e7e53446c4f54c92a361040822"
+"checksum hex 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)" = "644f9158b2f133fd50f5fb3242878846d9eb792e445c893805ff0e3824006e35"
 "checksum lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
 "checksum libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)" = "d515b1f41455adea1313a4a2ac8a8a477634fbae63cc6100e3aebb207ce61558"
 "checksum libudev 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ea626d3bdf40a1c5aee3bcd4f40826970cae8d80a8fec934c82a63840094dcfe"
diff --git a/Cargo.toml b/Cargo.toml
index c9ac9e7..4202d58 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -14,4 +14,5 @@ categories = ["api-bindings", "embedded", "hardware-support"]
 [dependencies]
 serialport = "3.3"
 quick-error = "1"
+hex = "0.4.2"
 
diff --git a/src/lib.rs b/src/lib.rs
index 96f88c4..d1eb40c 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -32,6 +32,7 @@
 // a `Result<T, rn2903::Error>`.
 #[macro_use]
 extern crate quick_error;
+use hex;
 use std::io;
 
 quick_error! {
@@ -80,6 +81,16 @@ quick_error! {
             description(err.description())
             from()
         }
+
+        TransmissionUnsuccessful {
+            description("the radio transmission was unsuccessful")
+            display("if transmission was unsuccessful (interrupted by radio Watchdog Timer time-out)")
+        }
+
+        InvalidParam {
+            description("the parameter is not valid")
+            display("the parameter is not valid")
+        }
     }
 }
 
@@ -466,6 +477,23 @@ impl Rn2903 {
             )),
         }
     }
+
+    pub fn radio_tx(&mut self, send: String) -> Result<Option<Vec<u8>>> {
+        let result = self.transact(&format!("radio tx {}", hex::encode(send)).into_bytes())?;
+        match &result[..] {
+            b"ok" => {
+                let sresult = self.read_line()?;
+                match &sresult[..] {
+                    b"radio_tx_ok" => return Ok(None),
+                    b"radio_err" => return Err(Error::TransmissionUnsuccessful),
+                    v => return Err(Error::bad_response("nok", bytes_to_string(v))),
+                }
+            }
+            b"invalid_param" => return Err(Error::InvalidParam),
+            b"busy" => return Err(Error::TransceiverBusy),
+            v => return Err(Error::bad_response("ok | busy", bytes_to_string(v))),
+        };
+    }
 }
 
 /// # MAC API Functions