在 SDK 中，TX 在当前演示项目中配置为缓冲模式。下述讨论了如何在缓冲器模式下使用 TX。

                    DL_MCAN_TxBufElement txMsg;
                    /* Initialize message to transmit. */
                    /* Identifier Value. */
                    txMsg.id = ((uint32_t)(0x4)) << 18U;
                    /* Transmit data frame. */
                    txMsg.rtr = 0U;
                    /* 11-bit standard identifier. */
                    txMsg.xtd = 0U;
                    /* ESI bit in CAN FD format depends only on error passive flag. */
                    txMsg.esi = 0U;
                    /* Transmitting 4 bytes. */
                    txMsg.dlc = 1U;
                    /* CAN FD frames transmitted with bit rate switching. */
                    txMsg.brs = 1U;
                    /* Frame transmitted in CAN FD format. */
                    txMsg.fdf = 1U;
                    /* Store Tx events. */
                    txMsg.efc = 1U;
                    /* Message Marker. */
                    txMsg.mm = 0xAAU;
                    /* Data bytes. */
                    txMsg.data[0] = LED_STATUS_ON;
                    
                    /* Write Tx Message to the Message RAM. */
                    DL_MCAN_writeMsgRam(MCAN0_INST, DL_MCAN_MEM_TYPE_BUF, 0U, &txMsg);
                    
                    /* Add request for transmission. */
                    DL_MCAN_TXBufAddReq(MCAN0_INST, 0U);

首先，通过调用 DL_MCAN_writeMsgRam()，将 TX 消息以缓冲区类型与缓冲区编号保存到消息 RAM 中。然后，使用添加请求通过调用 DL_MCAN_TXBufAddReq() 与此消息的缓冲区编号信息一起传输。