W221502JRLF

1. Problem When developing STM32 with IAR, I found that I could not print floating point numbers by redirecting printf to the serial port. The code is as follows:  The output is as follows:  It can...[Details]

What is SYSTICK: This is a 24-bit system tick timer, SysTick, with automatic reload and overflow interrupt functions. All microcontrollers based on the Cortex_M3 processor can obtain a certain time ...[Details]

Independent watchdog (IWDG) and low power mode are often used in STM32 development. The watchdog is to detect and solve faults caused by software errors, and the low power mode is to enter sleep mode...[Details]

Use the STM32 timer input capture module to control 3-way ultrasonic sensors. The  ultrasonic sensor used this time is the common HC-SR04, which is often used in the obstacle avoidance system of smal...[Details]

1. Function and purpose         There are two pins BOOT0 and BOOT1 on each STM32 chip. The level status of these two pins when the chip is reset determines which area the program starts from after th...[Details]

#include reg52.h #define PORTLEN P0 sbit bit_select = P2^0; sbit seg_select = P2^1; unsigned char src = {0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f ,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71}; unsigne...[Details]

About a dozen years ago, AMD was also a rival to Intel. It can be said that the two microprocessor manufacturers have been in love and hate for many years, which is completely a commercial ...[Details]

Homemade LED Electronics   Clocks can be seen in many electronic newspapers and magazines, but most of them need to reset the time and other parameters after power failure, which brings a lot of inco...[Details]

In this example, a single-byte binary number (0X20) is converted into uncompressed BCD code and stored in 0X25, 0X24, and 0X23, where 0X25 is the hundreds place and 0X23 is the ones place. main: MOV ...[Details]

Infrared remote control is the most widely used remote control method. Infrared remote control devices have the characteristics of small size, low power consumption, strong functions and low cost. Th...[Details]

On June 25 this year, in Guangzhou, at an energy forum held by British oil giant BP Group, Zhao Daiqing, a researcher at the Guangzhou Institute of Energy Conservation of the Chinese Academy of Sci...[Details]

HT1380   EQU 0X06  COUNT0   EQU 0X10  TXBUF   EQU 0X11  RXBUF   EQU 0X12  DATABUF  EQU 0X13  ADDRPOINT  EQU 0X14  HT_SDA_IN  EQU 0B01001000  HD_SDA_OUT EQU 0B00001000  HT_SCL   EQU 0  HT_RST   EQU ...[Details]

In 2018, the hottest trend is still artificial intelligence . The craze for artificial intelligence has swept all walks of life, whether it is the Internet of Things, smart hardware,...[Details]

AVR serial port says it has multi-machine communication function, which means it sends the slave address in the first frame and then sends data. So where is the slave address written? Does the slave ...[Details]

msvr3   turns on (`-msvr4') or off (`-msvr3') compiler extensions related to System V fourth edition (SVr4). The effects are as follows:      *   Which assembly syntax to output (you can select this ...[Details]