621KD25NC

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]

     The day before yesterday, I learned about STM's Systick and found it quite useful for precise timing. When I used CVAVR before, I found that the delay.h in it was very useful. So, I used STM32's...[Details]

When the domestic discussion about "ZTE being banned" was hot, Alibaba officially announced the acquisition of chip supplier Zhongtianwei , but the investment amount was not disclosed. At t...[Details]

Security PPP is a new model of urban video surveillance projects: 1) The government and social capital establish a project company in a certain proportion; 2) The project company participates in the ...[Details]

The Wassenaar Arrangement, everything started during the Cold War. Let's learn more about it with the embedded editor. background After the end of World War II, the United States ...[Details]

Different from 51, AVR and other single-chip microcomputers, the clock signal sources of msp430 include LFXT1, XT2 and DCO. 1. LFXT1: It can connect high-speed and low-speed crystal oscillators. In l...[Details]

This program uses the eight-channel ADC single acquisition mode. According to the configuration, ADC12SC will automatically reset after the conversion is completed in the single mode, so it is necess...[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]

At the beginning of the new year of 2018, after the release of the national photovoltaic policy, we found that the state’s support for village-level poverty alleviation power stations has not weake...[Details]

As a leading company in automotive semiconductors, Freescale and Khronos Group have jointly launched an automotive multimedia embedded microprocessor i.MX35 with an integrated OpenVG hardware acceler...[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]

When STM32 uses JTMS (PA13) and JTCK (PA14) as normal I/O ports, add the following code before initialization (the order cannot be reversed):   RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE); G...[Details]

Summary of STM32 peripheral DMA usage: 1. Select DAM mode according to your needs: (1) Circular mode—DMA_Mode = DMA_Mode_Circular (2) Normal mode—DMA_Mode = DMA_Mode_Normal 2. For Chanel3 of DMA1, t...[Details]

1. Common knowledge about DMA.  1. Function: to achieve high-speed data transmission between chips. That is, it can achieve data transmission without occupying the CPU.  2. Mode: There are three tran...[Details]

;Question: The 80C51 single-chip microcomputer has a fosc = 6MHz. It is required to use the T1 timer working mode 1 to perform a timing of 40ms. And P1.7 periodically outputs a rectangular wave with ...[Details]