A collection of animated diagrams illustrating signal transmission in communication protocols helps us understand the principles of signal transmission. 1. SPI Transmission ▲ Figure 1 SPI Data Transmission ▲ Figure 1.2 SPI Data Transmission (2) ▲ Figure 1.3 SPI Timing Signal 2. I²C Transmission ▲ Figure 2.1 I2C Bus and Addressing Method 3. UART Transmission … Read more
Search on WeChat Technical Training In engineering, the RS485 control line is often mentioned. What exactly is it? Today, I will discuss the applications related to RS485. By understanding RS485 in depth, you will find that there is indeed a lot of knowledge within it. We will choose some common issues considered in weak electricity … Read more
When the CAN bus malfunctions or data transmission is abnormal, various strange fault phenomena often occur, such as abnormal dashboard displays, inability to start the vehicle, failure to turn off after starting, decreased vehicle performance, and loss of certain electronic control system functions. This is because relevant data or information is transmitted through the CAN … Read more
With the booming development of automotive electronics and industrial automation, the number of devices and data volume on the CAN bus has greatly increased, posing significant challenges to the CAN bus. To meet the higher bandwidth and data throughput requirements, CAN FD (CAN with Flexible Data-Rate) was born. So what exactly are the differences between … Read more
First, let’s take a look at the frame structure of CAN: CAN Frame Structure From the above image, we can see that in the standard frame, there is an r0 bit, which is actually a reserved bit. ISO11898-1 stipulates that the sender sends the r0 bit as dominant, while the receiver does not judge the … Read more
4. Short Circuit of CAN L to Ground When a short circuit occurs between CAN L and ground, due to the fault tolerance characteristics of the CAN bus, the entire CAN network may be unable to communicate or generate related fault codes. However, for certain vehicle models, such as Haima, the fault tolerance characteristics of … Read more
Education | Reading | Life | Growth Written by Chen Deyong In the previous section, we discussed the 7 groups of modal verbs that are essential for middle school English. In this article, we will delve deeper into the usage of these modal verbs.Today, let’s first take a look at the usage of the most … Read more
1）Generally speaking: may means being allowed to do something, while can means having the ability to do something. He can swim the channel. He can swim across the strait. Children may swim in the pool only when there is a lifeguard present. Children can only swim in the pool when a lifeguard is present. However, … Read more
Before performing CAN bus communication, it is important to ensure proper bus configuration, such as termination resistors. They are crucial components that affect bus communication. Below, we will analyze the effects of not using termination resistors solely from the perspective of signal amplitude and time constant, without considering signal integrity. Termination Resistor Requirements According to … Read more
The modal verb can is frequently used in English, and its main usages and points of focus include: 1. Expressing Ability In this case, can means “to be able to”. In negative sentences, simply add not after can, and in interrogative sentences, move can to the beginning of the sentence. For example: Affirmative: She can … Read more