1. What is the Validity of IIC Protocol Data? (1) Data Transmission Format Start and Stop Conditions: When the SCL line is high, a transition from high to low on the SDA line indicates a start condition; when SCL is high, a transition from low to high on the SDA line indicates a stop condition. … Read more
1:Tool Preparation, Test Board, Dupont Wires, and Adapter Board Label 1 is the adjustable sliding resistor to adjust the VDD and VDDIO voltage Label 2 is the interface connected to TP 2 Interface Definition: When wiring, follow the above definition and leave VDDIO unconnected. Note: 1): For TP using the IIC interface, there are two … Read more
In the field of electronic engineering, IIC and SPI are two common wireless communication protocols used in various communication devices, with a wide range of application scenarios. However, many beginners in electronics are unclear about the differences between these two protocols, so this article will elaborate on both protocols. 1. IIC IIC, short for Internet … Read more
Welcome FPGA engineers to join the official WeChat technical group. Clickthe blue textto follow us at FPGA Home – the best and largest pure FPGA engineer community in China SPI Bus SPI (Serial Peripheral Interface) is a high-speed, full-duplex, synchronous, serial communication bus that uses 3 to 4 lines and operates in a master-slave mode, … Read more
Many students learning embedded systems often feel confused by various protocols and can’t distinguish their functions. Today, I will clarify the five commonly used protocols in embedded systems, packed with useful information. Without further ado, let’s get started! 01 UART Communication Protocol 1. Principle The data packet in serial communication is transmitted from the sending … Read more
Regarding the idea of layered design, a detailed design process was explained in a previous article titled “Embedded Hardware Communication Interface Protocol-SPI (Part 2) Layered Architecture Design Simulation Interface” when discussing SPI interface design, so I won’t elaborate further here. Now, using the BSP layer design approach of SPI as a reference, we will use … Read more
Yesterday, a student asked me how to drive the DAC5571. I had a solution written by a teacher on hand, and inspired by it, I wrote a simple module. First, let’s take a look at the DAC5571 manual. It uses SDA and SCL for driving, which is the IIC protocol.The waveforms of SDA and SCL … Read more
1. Completed IIC and SPI communication using software simulation; 2. Next, prepare to use DMA to transfer SPI data and calculate the angle time for reading once.
IIC IIC (Inter-Integrated Circuit) bus is a two-wire serial bus developed by PHILIPS for connecting microcontrollers and their peripheral devices. The I2C bus transmits information between the bus and devices using two lines (SDA and SCL), enabling serial communication between the microcontroller and external devices or bidirectional data transfer between the master and slave devices. … Read more
Does IIC support hot swapping? (With a detailed interpretation of CW32 IIC protocol) Have you learned it yet? After I finish these low-speed experiments, I will provide the debugging steps for the logic analyzer. IIC is done, next comes SPI, which is worth highlighting because the vast majority of devices use SPI; it’s practically ALL … Read more