In the creative world of Arduino, when we desire to enable our small development board to collaborate seamlessly with various external devices, achieving more complex and powerful functions, the Wire library emerges like a hidden master, quietly facilitating our connection with I2C devices. Today, let us unveil the mystery of the Wire library and explore … Read more
1. Introduction If you bought the BBB for hardware-related projects, you will likely need to create a cape. The term cape is the official name from BBB, referring to the software and hardware peripherals of the BBB. By learning about the device tree, we understand that BBB uses capemgr and device tree to control the … Read more
1. Introduction to SPI SPI, short for Serial Peripheral Interface, is a serial communication interface defined by Motorola for its MC68HCXX series processors. The SPI interface is mainly used between EEPROM, FLASH, real-time clocks, AD converters, as well as digital signal processors and digital signal decoders. SPI is a high-speed, full-duplex, synchronous communication bus that … Read more
There has been a rumor circulating that the STM32 hardware I2C design has bugs, and it is better not to use it, as software I2C is more reliable. For a long time, to avoid unnecessary trouble, I have never used hardware I2C, mainly because software I2C is also quite convenient and can be used on … Read more
I'm Lao Wen, an embedded engineer who loves learning. Follow me to become even better together! Memory is divided into two main categories: RAM and ROM, and this article primarily discusses ROM. Initially, ROM could not be programmed; it retained whatever content it was manufactured with, making it inflexible. Later, PROM was introduced, which could … Read more
Follow+Star Public Number, Don’t Miss Wonderful Content Author | strongerHuang WeChat Public Account | strongerHuang I believe many readers have used EEPROMs like AT24C0x that utilize I²C for reading and writing. Improper usage in projects can easily lead to data loss or anomalies. Today, I will discuss the content regarding EEPROM. 1Basic Principles of I²C … Read more
Since the birth of MCUs in the 1970s, the technology for breaking chips and the solutions to prevent chip cracking have been in a constant chase of “the higher the road, the higher the magic,” with each side trying to outdo the other. This article shares the development history of microcontrollers in terms of security … Read more
There has been a rumor circulating: The hardware I2C design of STM32 has a bug, and it is better not to use it; using software I2C is more reliable. For a long time, to avoid unnecessary trouble, I have not used hardware I2C, mainly because software I2C is also quite convenient, and can be used … Read more