Add module reset and fix factory reset return

Previously, it returned a String but was documented to return bytes; it
now returns bytes.

CHANGELOG.md

@@ -10,6 +10,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Added
 - `Rn2903::system_version_bytes()`
 - `Rn2903::system_factory_reset()`
+- `Rn2903::system_module_reset()`
 
 ### Changed
 

src/lib.rs

@@ -294,11 +294,19 @@ impl Rn2903 {
         self.transact(b"sys get ver")
     }
 
+    /// Resets the CPU on the connected module. State in memory is lost and the MAC
+    /// starts up upon reboot, automatically loading default LoRaWAN settings.
+    /// 
+    /// Returns the system version, like `::system_version_bytes()`.
+    pub fn system_module_reset(&mut self) -> Result<Vec<u8>> {
+        self.transact(b"sys reset")
+    }
+
     /// Performs a factory reset on the connected module. All EEPROM values are
     /// restored to factory defaults. All LoRaWAN settings set by the user are lost.
+    ///
     /// Returns the system version, like `::system_version_bytes()`.
-    pub fn system_factory_reset(&mut self) -> Result<String> {
+    pub fn system_factory_reset(&mut self) -> Result<Vec<u8>> {
-        let bytes = self.transact(b"sys factoryRESET")?;
+        self.transact(b"sys factoryRESET")
-        Ok(bytes_to_string(&bytes))
     }
 }