wpan: use builtin conversion methods

embassy-stm32-wpan/src/mac/event.rs

@@ -1,4 +1,3 @@
-use super::helpers::to_u16;
 use super::indications::{
     AssociateIndication, BeaconNotifyIndication, CommStatusIndication, DataIndication, DisassociateIndication,
     DpsIndication, GtsIndication, OrphanIndication, PollIndication, SyncLossIndication,
@@ -58,7 +57,8 @@ impl TryFrom<&[u8]> for MacEvent {
     type Error = ();
 
     fn try_from(value: &[u8]) -> Result<Self, Self::Error> {
-        let opcode = to_u16(&value[0..2]);
+        let opcode = u16::from_le_bytes(value[0..2].try_into().unwrap());
+
         let opcode = OpcodeM0ToM4::try_from(opcode)?;
 
         let buf = &value[2..];

embassy-stm32-wpan/src/mac/helpers.rs

@@ -1,7 +0,0 @@
-pub fn to_u16(buf: &[u8]) -> u16 {
-    ((buf[1] as u16) << 8) | buf[0] as u16
-}
-
-pub fn to_u32(buf: &[u8]) -> u32 {
-    ((buf[0] as u32) << 0) + ((buf[1] as u32) << 8) + ((buf[2] as u32) << 16) + ((buf[3] as u32) << 24)
-}

embassy-stm32-wpan/src/mac/indications.rs

@@ -1,6 +1,5 @@
 use super::consts::MAX_PENDING_ADDRESS;
 use super::event::ParseableMacEvent;
-use super::helpers::to_u32;
 use super::typedefs::{
     AddressMode, Capabilities, DisassociationReason, KeyIdMode, MacAddress, MacChannel, MacStatus, PanDescriptor,
     PanId, SecurityLevel,
@@ -114,7 +113,7 @@ impl ParseableMacEvent for BeaconNotifyIndication {
         ];
 
         Ok(Self {
-            sdu_ptr: to_u32(&buf[0..4]) as *const u8,
+            sdu_ptr: u32::from_le_bytes(buf[0..4].try_into().unwrap()) as *const u8,
             pan_descriptor: PanDescriptor::try_from(&buf[4..26])?,
             addr_list,
             bsn: buf[82],
@@ -405,7 +404,7 @@ impl ParseableMacEvent for DataIndication {
         };
 
         Ok(Self {
-            msdu_ptr: to_u32(&buf[0..4]) as *const u8,
+            msdu_ptr: u32::from_le_bytes(buf[0..4].try_into().unwrap()) as *const u8,
             src_addr_mode,
             src_pan_id: PanId([buf[5], buf[6]]),
             src_address,
@@ -424,10 +423,10 @@ impl ParseableMacEvent for DataIndication {
             uwn_preamble_symbol_repetitions: buf[45],
             datrate: buf[46],
             ranging_received: buf[47],
-            ranging_counter_start: to_u32(&buf[48..52]),
+            ranging_counter_start: u32::from_le_bytes(buf[48..52].try_into().unwrap()),
-            ranging_counter_stop: to_u32(&buf[52..56]),
+            ranging_counter_stop: u32::from_le_bytes(buf[52..56].try_into().unwrap()),
-            ranging_tracking_interval: to_u32(&buf[56..60]),
+            ranging_tracking_interval: u32::from_le_bytes(buf[56..60].try_into().unwrap()),
-            ranging_offset: to_u32(&buf[60..64]),
+            ranging_offset: u32::from_le_bytes(buf[60..64].try_into().unwrap()),
             ranging_fom: buf[65],
             rssi: buf[66],
         })

embassy-stm32-wpan/src/mac/mod.rs

@@ -1,7 +1,6 @@
 pub mod commands;
 mod consts;
 pub mod event;
-mod helpers;
 pub mod indications;
 mod macros;
 mod opcodes;

embassy-stm32-wpan/src/mac/responses.rs

@@ -1,6 +1,5 @@
 use super::consts::{MAX_ED_SCAN_RESULTS_SUPPORTED, MAX_PAN_DESC_SUPPORTED, MAX_SOUNDING_LIST_SUPPORTED};
 use super::event::ParseableMacEvent;
-use super::helpers::to_u32;
 use super::typedefs::{
     AddressMode, AssociationStatus, KeyIdMode, MacAddress, MacStatus, PanDescriptor, PanId, PibId, ScanType,
     SecurityLevel,
@@ -100,7 +99,7 @@ impl ParseableMacEvent for GetConfirm {
     fn try_parse(buf: &[u8]) -> Result<Self, ()> {
         Self::validate(buf)?;
 
-        let address = to_u32(&buf[0..4]);
+        let address = u32::from_le_bytes(buf[0..4].try_into().unwrap());
 
         Ok(Self {
             pib_attribute_value_ptr: address as *const u8,
@@ -357,8 +356,8 @@ impl ParseableMacEvent for CalibrateConfirm {
         Ok(Self {
             status: MacStatus::try_from(buf[0])?,
             // 3 byte stuffing
-            cal_tx_rmaker_offset: to_u32(&buf[4..8]),
+            cal_tx_rmaker_offset: u32::from_le_bytes(buf[4..8].try_into().unwrap()),
-            cal_rx_rmaker_offset: to_u32(&buf[8..12]),
+            cal_rx_rmaker_offset: u32::from_le_bytes(buf[8..12].try_into().unwrap()),
         })
     }
 }
@@ -400,10 +399,10 @@ impl ParseableMacEvent for DataConfirm {
             time_stamp: [buf[1], buf[2], buf[3], buf[4]],
             ranging_received: buf[5],
             status: MacStatus::try_from(buf[6])?,
-            ranging_counter_start: to_u32(&buf[7..11]),
+            ranging_counter_start: u32::from_le_bytes(buf[7..11].try_into().unwrap()),
-            ranging_counter_stop: to_u32(&buf[11..15]),
+            ranging_counter_stop: u32::from_le_bytes(buf[11..15].try_into().unwrap()),
-            ranging_tracking_interval: to_u32(&buf[15..19]),
+            ranging_tracking_interval: u32::from_le_bytes(buf[15..19].try_into().unwrap()),
-            ranging_offset: to_u32(&buf[19..23]),
+            ranging_offset: u32::from_le_bytes(buf[19..23].try_into().unwrap()),
             ranging_fom: buf[24],
         })
     }