STM32 of Can bus receiving dual FIFO using method

We can see from the following block diagram that the stm32f013 has two receive FIFO Image: 1.png But the actual use of how to let the two FIFO is used, the solution is here, 1. stm32f103 has 0-13 total of 14 filter groups, each of which can be bound to a specified FIFO. Image: 1.png Image: 2.png 2. In particular, it is important to note that the reception of FIFO0 and FIFO1 corresponds to different interrupt entrances, remember. respectively is DCD Usb_lp_can1_rx0_irqhandler; USB Low priority or CAN1 RX0 DCD Can1_rx1_irqhandler; CAN1 RX1 ========================================================================================= The screenshot below is a simple example block diagram that assigns a filter to a different FIFO

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