Problem: I used a USB to TTL board to program the STC89C52RC microcontroller. I connected the board’s RX to the microcontroller’s TX (P3.1), the board’s TX to the microcontroller’s RX (P3.0), and GND to GND. After making the connections, I couldn’t download the program, and I kept receiving the prompt “Please power on the MCU.” … Read more
Click the above “Easy Learning Electronics” to follow us with one click and easily learn electronic knowledge. Easy Learning Electronics Subscription Daily updates on electronic industry technical articles and the latest microcontroller news, learn easily anytime, anywhere. Students may encounter fewer issues, but when starting work in software development, various “unimaginable” problems may arise. However, … Read more
1. Introduction In the development of STM32 microcontrollers, using SWD for program downloading only requires two pins. So, when do we need to use the microcontroller’s RST port? This involves the pin configuration of the microcontroller. In the CubeMX software configuration, there are five options regarding system debugging settings. If you choose SWD debugging, you … Read more
Click on the “Embedded Application Research Institute” above, select “Pin/Star the Official Account“ Practical Benefits, Delivered First-Hand! Source | CSDN Passing Bear Compiled & Formatted | Embedded Application Research Institute 1. Introduction Those involved in embedded product development must have encountered the need to save device parameters. A common approach is to manage parameters using … Read more
I have been thinking about this content for a long time, but either I got busy or my writing skills were off, so I never got around to it. Today, I’ll finally share it; otherwise, it would be buried deep in my brain. Haha. The content is quite simple; it’s just about setting up the … Read more
The noinit section is familiar to most of us developers working with microcontrollers. If this section is used, it will be automatically allocated by the compiler to a region in the chip’s SRAM (note that it is in the RAM area, not Flash). Variables defined in this section will not be re-initialized during any chip … Read more
Header File Meanings avr_macros.h includes simplified writing for reading and writing 16-bit registers, along with several bit manipulation functions. comp_a90.h provides brief writing for a large number of intrinsic functions. ina90.h includes the “inavr.h” and “comp_A90.h” files. intrinsics.h provides intrinsic functions that offer the simplest operations for handling the processor’s low-level features: sleep, watchdog, FLASH … Read more
Below is a detailed introduction on how to use virtual serial ports to debug serial sending and receiving programs. Three software programs are needed: KEIL, VSPD XP5 (virtual serial ports driver xp5.1), and Serial Debug Assistant (I personally find version 2.1 quite user-friendly). 1. First, compile the written program in KEIL. 2. Open VSPD, the … Read more
Click the above “Chuangxue Electronics” to follow and easily learn electronic knowledge. Chuangxue Electronics Subscription Daily updates of technical articles in the electronics industry and the latest news on microcontrollers, learn easily anytime, anywhere. Here are some issues encountered in mixed programming of C language and assembly language in Keil, written down for future reference. … Read more
Click the above “Chuangxue Electronics” to follow with one click, making it easy to learn electronic knowledge. Chuangxue Electronics Subscription Account Daily updates on technical articles in the electronics industry and the latest information on microcontrollers, making it easy to learn anytime and anywhere. What is the use of the LIB library? A simple example … Read more