chore(wl3): timer support

Signed-off-by: Frederic Pillon <frederic.pillon@st.com>

Author: fpistm

libraries/SrcWrapper/src/HardwareTimer.cpp

@@ -281,16 +281,20 @@ uint32_t HardwareTimer::getLLChannel(uint32_t channel)
       case 1:
         ll_channel = LL_TIM_CHANNEL_CH1N;
         break;
+#if defined(TIM_CCER_CC2NE)
 #if defined(LL_TIM_CHANNEL_CH2N)
       case 2:
         ll_channel = LL_TIM_CHANNEL_CH2N;
         break;
 #endif
+#endif
+#if defined(TIM_CCER_CC3NE)
 #if defined(LL_TIM_CHANNEL_CH3N)
       case 3:
         ll_channel = LL_TIM_CHANNEL_CH3N;
         break;
 #endif
+#endif
 #if defined(LL_TIM_CHANNEL_CH4N)
       case 4:
         ll_channel = LL_TIM_CHANNEL_CH4N;
@@ -1347,7 +1351,7 @@ uint32_t HardwareTimer::getTimerClkFreq()
   uint8_t timerClkSrc = getTimerClkSrc(_timerObj.handle.Instance);
   uint64_t clkSelection = timerClkSrc == 1 ? RCC_PERIPHCLK_TIMG1 : RCC_PERIPHCLK_TIMG2;
   return HAL_RCCEx_GetPeriphCLKFreq(clkSelection);
-#elif defined(STM32WB0x)
+#elif defined(STM32WB0x) || defined(STM32WL3x)
   return SystemCoreClock;
 #else
   RCC_ClkInitTypeDef    clkconfig = {};