1. Introduction to SPI Interface of STM32 1.1 Overview of SPI SPI (Serial Peripheral Interface) is a high-speed, full-duplex, synchronous serial communication interface commonly used for communication between microcontrollers and external devices (such as sensors, memory, display drivers, etc.). 1.2 Main Signal Lines of SPI SCK (Serial Clock): Clock signal generated by the master device … Read more
1Module Source>>> Product Physical Display： Data Download Link：https://pan.baidu.com/s/15TcV9HevtfVBWcm7pgRNTw Data Extraction Code：e1q5 2Specifications>>> Operating Voltage：4-5.5V Operating Current：8-330MA Scanning Rate：500-1300Hz Communication Protocol：Single Bus Pin Count：5 Pins (2.54mm pitch header) Refer to the manufacturer’s documentation for the above information 3Porting Process>>>Our goal is to port the example to the CW32F030C8T6 development board. First, we need to obtain the … Read more
Recently, I saw a super cute little doll made with a dot matrix LED screen in a maker group. When there is sound, the LED screen shows animations, which is very interesting. Coincidentally, I have a dot matrix LED, so I decided to make one myself. I found that there really is such a thing … Read more
The 8×8 dot matrix display module is a device based on the MAX7219 control chip. In a single-level usage scenario, one MAX7219 can control a single 8×8 dot matrix display. If cascading is used, multiple dot matrix displays can be driven simultaneously to achieve the display effect of a dot matrix information screen. Using the … Read more