1 files changed, 11 insertions, 8 deletions
diff --git a/Drivers/STM32WBxx_HAL_Driver/Src/stm32wbxx_hal_tim_ex.c b/Drivers/STM32WBxx_HAL_Driver/Src/stm32wbxx_hal_tim_ex.c
index 250406066..503cb0ccc 100644
--- a/Drivers/STM32WBxx_HAL_Driver/Src/stm32wbxx_hal_tim_ex.c
+++ b/Drivers/STM32WBxx_HAL_Driver/Src/stm32wbxx_hal_tim_ex.c
@@ -1647,7 +1647,7 @@ HAL_StatusTypeDef HAL_TIMEx_MasterConfigSynchronization(TIM_HandleTypeDef *htim,
   uint32_t tmpsmcr;
 
   /* Check the parameters */
-  assert_param(IS_TIM_SYNCHRO_INSTANCE(htim->Instance));
+  assert_param(IS_TIM_MASTER_INSTANCE(htim->Instance));
   assert_param(IS_TIM_TRGO_SOURCE(sMasterConfig->MasterOutputTrigger));
   assert_param(IS_TIM_MSM_STATE(sMasterConfig->MasterSlaveMode));
 
@@ -1680,16 +1680,19 @@ HAL_StatusTypeDef HAL_TIMEx_MasterConfigSynchronization(TIM_HandleTypeDef *htim,
   /* Select the TRGO source */
   tmpcr2 |=  sMasterConfig->MasterOutputTrigger;
 
-  /* Reset the MSM Bit */
-  tmpsmcr &= ~TIM_SMCR_MSM;
-  /* Set master mode */
-  tmpsmcr |= sMasterConfig->MasterSlaveMode;
-
   /* Update TIMx CR2 */
   htim->Instance->CR2 = tmpcr2;
 
-  /* Update TIMx SMCR */
-  htim->Instance->SMCR = tmpsmcr;
+  if (IS_TIM_SLAVE_INSTANCE(htim->Instance))
+  {
+    /* Reset the MSM Bit */
+    tmpsmcr &= ~TIM_SMCR_MSM;
+    /* Set master mode */
+    tmpsmcr |= sMasterConfig->MasterSlaveMode;
+
+    /* Update TIMx SMCR */
+    htim->Instance->SMCR = tmpsmcr;
+  }
 
   /* Change the htim state */
   htim->State = HAL_TIM_STATE_READY;