#RA MCU Testing Guide A new topic has arrived! After saying goodbye to the PWM waveform rhythm, this time we will focus on the indispensable “information bridge” – #Serial Communication. The Renesas Embedded Encyclopedia will guide everyone to explore the configuration and data transmission of serial communication step by step based on the RA-Eco-RA2L1 development … Read more
Follow+Star PublicAccount, don’t miss out on exciting contentAuthor | strongerHuangWeChat Public Account | Embedded ColumnYou may not know what Modbus is, but in reality, Modbus is widely used in many industrial electronic systems. What is Modbus? Modbus is a communication protocol developed by Modicon (now Schneider Electric) in 1979 for PLCs, primarily used for networking … Read more
Introduction In microcontroller systems, the serial port (UART, Universal Asynchronous Receiver-Transmitter) is a very important component. Typically, the microcontroller’s serial port connects to the host computer via RS232/RS485 level conversion chips for data exchange, parameter settings, network composition, and connections to various external devices. The RS232/RS485 serial interface bus is characterized by low cost, simplicity, … Read more
Click the blue text above to follow us Embedded Training – Choose Jufeng Smart Link Why Use UART Variable Length Reception Standard blocking reception functions HAL_UART_Receive(UART_HandleTypeDef * huart, uint8_t * pData, uint16_t Size,uint32_t Timeout) // huart: handle // pData: variable to hold received data // Size: size of data to be received Interrupt reception functions … Read more
What is a Bus? A bus is a common communication line for transmitting information between various functional components of a computer, consisting of a bundle of wires. In fact, a bus is an internal structure that serves as a public channel for information transfer between the CPU, memory, input, and output devices. To simplify hardware … Read more
1. Basic Concepts of UART UART (Universal Asynchronous Receiver/Transmitter) is a universal asynchronous transceiver with the following characteristics: Asynchronous Communication: No clock line is required, only TX (transmit) and RX (receive) data lines are needed. Full-Duplex Transmission: Supports simultaneous data transmission and reception. Flexible Configuration: Baud rate, data bits, parity bits, and stop bits can … Read more
Comparison and Analysis of Embedded System Communication Protocols In embedded system development, these six major communication protocols each have their strengths: UART, with its simple and user-friendly characteristics, is often used for short-distance (1m) debugging communication between MCUs and sensors; RS232 achieves a stable 15m connection with host computers through level conversion chips, making it … Read more
UART, I2C, and SPI are common low-speed board-level communication protocols. Currently, mainstream SoCs are equipped with controllers for these communication protocols, and various sensors, touch controllers, fingerprint modules, Bluetooth modules, and Wi-Fi modules are compatible with one or more of these communication methods. Below, we will discuss each protocol:UART UART generally consists of three lines: … Read more
In embedded systems, on-board communication interfaces refer to the communication pathways or buses used to connect various integrated circuits with other peripheral devices. The following content summarizes commonly used on-board communication interfaces: including I2C, SPI, UART, and 1-Wire: I2C Bus The I2C bus is a synchronous, bidirectional, half-duplex two-wire serial interface bus. Here, half-duplex means … Read more
🚗The Great Communication Protocol Battle: Why Do Some Chips Use UART, Others Use SPI, and Some Prefer I2C? The Truth is More Complex Than You Think!🎯 🎓 Keywords: UART, SPI, I2C, chip communication, hardware design🧑🔧 Target Audience: Electronics beginners, communication novices, embedded developers 🚀 Opening Statement: It’s not the chips choosing the protocol, it’s the … Read more