Hi Joseph， This is the information in the ECR register, and the TEC register is almost filled // // Configure the MCAN Module. // MCANConfig(); while(1) { // // Write message to Message RAM. // MCAN_writeMsgRam(MCANA_DRIVER_BASE, MCAN_MEM_TYPE_BUF, loopCnt, &txMsg[loopCnt]); // // Add transmission request for Tx buffer 0 // HWREG(MCANA_DRIVER_BASE + MCAN_TXBAR) = 0x00000001; // // Wait till the frame is successfully transmitted (and ACKnowledged) // "Tx Buffer Transmission Occurred" register is polled. while(HWREG(MCANA_DRIVER_BASE + MCAN_TXBTO) == 0x00000000) { } DEVICE_DELAY_US(1000000); // // // // Stop Application. // // // asm(" ESTOP0"); } Change the single send from the example to send every 1s After the PC tool receives dozens of data, Canfd enters the bus off state
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