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Single System Repeater Manufacturer introduce the software and hardware of the CAN Repeater
1. The Single System Repeater manufacturer tells you that in addition to the main part of the repeater hardware, there are parts such as watchdog and LED indication. The Single System Repeater manufacturer tells you that several LEDs are used for repeater power-on indication and CAN interface current receiving and sending a status indication, as well as interface communication failure (such as bus off) indication.
The Single System Repeater manufacturer tells you that the watchdog has high-level, low-level power-on reset and watchdog functions. The EEPROM can be used to save the configuration parameters of the repeater and other information, which is convenient for the flexible configuration of the system.
2. Software design of CAN repeater. The Single System Repeater manufacturer tells you that the main task of the CAN repeater is to filter and forward packets between two CAN segments. Due to the requirement for real-time communication and the limited buffer capacity in the CPU of the CAN repeater, it is required to make the storage and forwarding time as short as possible when designing the software.
The Single System Repeater manufacturer tells you that in order to meet this requirement, the CPU uses interrupts to receive messages from two CAN controllers, and at the same time, try to simplify the code length of the CPU's transceiver subroutines. In order to save memory and manage memory effectively, the CPU adopts the FIFO mechanism to manage internal RAM.
The Single System Repeater manufacturer tells you that in order to ensure the reliability of the data of the two communicating parties in the transmission of the message through the repeater, only the end-to-end error control of the application layer of the communicating parties can meet the requirements. However, it is not advisable to add too many error control and flow control functions in the software design of the repeater, because this not only fails to achieve the purpose but also reduces the operational efficiency of the repeater and increases the hidden trouble.
The above information is the Single System Repeater Manufacturer's introduction and analysis of the software and hardware of the CAN Repeater, hope it helps you.
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