diff --git a/network/robus_network/HAL/STM32F0/robus_hal.c b/network/robus_network/HAL/STM32F0/robus_hal.c
index 7e5b7d2d9..84e5482b2 100644
--- a/network/robus_network/HAL/STM32F0/robus_hal.c
+++ b/network/robus_network/HAL/STM32F0/robus_hal.c
@@ -389,6 +389,11 @@ static void RobusHAL_TimeoutInit(void)
  ******************************************************************************/
 _CRITICAL void RobusHAL_ResetTimeout(uint16_t nbrbit)
 {
+    /* TODO: optimize further by getting rid of the need to reach for the ARR value.
+            The same result can be achieved by only setting the start value of the counter and letting it count down toward 0.
+            An IRQ can then be generated when reaching 0. This way diff = counter_value.
+    */
+
     uint32_t arr_val, diff;
     arr_val = LL_TIM_ReadReg(ROBUS_TIMER, ARR);  // Get actual timeout value
     diff = arr_val-LL_TIM_ReadReg(ROBUS_TIMER, CNT);  // Compute remaining time before timeout
diff --git a/network/robus_network/HAL/STM32F4/robus_hal.c b/network/robus_network/HAL/STM32F4/robus_hal.c
index 29e7eac32..744fc6752 100644
--- a/network/robus_network/HAL/STM32F4/robus_hal.c
+++ b/network/robus_network/HAL/STM32F4/robus_hal.c
@@ -393,6 +393,11 @@ static void RobusHAL_TimeoutInit(void)
  ******************************************************************************/
 _CRITICAL void RobusHAL_ResetTimeout(uint16_t nbrbit)
 {
+    /* TODO: optimize further by getting rid of the need to reach for the ARR value.
+            The same result can be achieved by only setting the start value of the counter and letting it count down toward 0.
+            An IRQ can then be generated when reaching 0. This way diff = counter_value.
+    */
+
     uint32_t arr_val, diff;
     arr_val = LL_TIM_ReadReg(ROBUS_TIMER, ARR);  // Get actual timeout value
     diff = arr_val-LL_TIM_ReadReg(ROBUS_TIMER, CNT);  // Compute remaining time before timeout
diff --git a/network/robus_network/HAL/STM32G4/robus_hal.c b/network/robus_network/HAL/STM32G4/robus_hal.c
index 8ff8e7fec..a99270688 100644
--- a/network/robus_network/HAL/STM32G4/robus_hal.c
+++ b/network/robus_network/HAL/STM32G4/robus_hal.c
@@ -390,6 +390,11 @@ static void RobusHAL_TimeoutInit(void)
  ******************************************************************************/
 _CRITICAL void RobusHAL_ResetTimeout(uint16_t nbrbit)
 {
+    /* TODO: optimize further by getting rid of the need to reach for the ARR value.
+            The same result can be achieved by only setting the start value of the counter and letting it count down toward 0.
+            An IRQ can then be generated when reaching 0. This way diff = counter_value.
+    */
+
     uint32_t arr_val, diff;
     arr_val = LL_TIM_ReadReg(ROBUS_TIMER, ARR);  // Get actual timeout value
     diff = arr_val-LL_TIM_ReadReg(ROBUS_TIMER, CNT);  // Compute remaining time before timeout 
diff --git a/network/robus_network/HAL/STM32L0/robus_hal.c b/network/robus_network/HAL/STM32L0/robus_hal.c
index 6c946d076..5d9f7a2de 100644
--- a/network/robus_network/HAL/STM32L0/robus_hal.c
+++ b/network/robus_network/HAL/STM32L0/robus_hal.c
@@ -388,6 +388,11 @@ static void RobusHAL_TimeoutInit(void)
  ******************************************************************************/
 _CRITICAL void RobusHAL_ResetTimeout(uint16_t nbrbit)
 {
+    /* TODO: optimize further by getting rid of the need to reach for the ARR value.
+            The same result can be achieved by only setting the start value of the counter and letting it count down toward 0.
+            An IRQ can then be generated when reaching 0. This way diff = counter_value.
+    */
+
     uint32_t arr_val, diff;
     arr_val = LL_TIM_ReadReg(ROBUS_TIMER, ARR);  // Get actual timeout value
     diff = arr_val-LL_TIM_ReadReg(ROBUS_TIMER, CNT);  // Compute remaining time before timeout
diff --git a/network/robus_network/HAL/STM32L4/robus_hal.c b/network/robus_network/HAL/STM32L4/robus_hal.c
index fbe673a3e..a06c9a333 100644
--- a/network/robus_network/HAL/STM32L4/robus_hal.c
+++ b/network/robus_network/HAL/STM32L4/robus_hal.c
@@ -390,6 +390,10 @@ static void RobusHAL_TimeoutInit(void)
  ******************************************************************************/
 _CRITICAL void RobusHAL_ResetTimeout(uint16_t nbrbit)
 {
+    /* TODO: optimize further by getting rid of the need to reach for the ARR value.
+            The same result can be achieved by only setting the start value of the counter and letting it count down toward 0.
+            An IRQ can then be generated when reaching 0. This way diff = counter_value.
+    */
     uint32_t arr_val, diff;
     arr_val = LL_TIM_ReadReg(ROBUS_TIMER, ARR);  // Get actual timeout value
     diff = arr_val-LL_TIM_ReadReg(ROBUS_TIMER, CNT);  // Compute remaining time before timeout