As per CAN new API i have implemented as followed sequence:-MX_CAN1_Init();CAN_filterConfig(); if (HAL_CAN_Start(&hcan1) != HAL_OK) { Error_Handler(); } if (HAL_CAN_ActivateNotification(&hcan1, CAN_IT_RX_FIFO0_FULL |CAN_IT_TX_MAILBOX_EMPTY) != HAL_O...