Abstract: A two-stage first-order adjustable phase shifter with a center frequency of 100 MHz is constructed using a PIN tube and a radio frequency operational amplifier. The phase adjustment range is...
I haven't been to the forum for several days. I came to Chongqing from Nanjing and bid farewell to my student days. I started to learn to live in society. Now I use my powerful Nokia 2610 mobile phone...
Dear experienced people, experts, and experts, please give me some advice! My current C++ foundation is acceptable, and I want to develop in the embedded direction in the future. How should I start?...
ARM has 7 basic working modes User: non-privileged mode, most tasks are executed in this mode FIQ: this mode is entered when a high priority (fast) interrupt occurs IRQ: this mode is entered when a...
I use stc11f40xe microcontroller, touch screen input, ADS7846 uses falling edge, and connects it to the INT0 port of the microcontroller. Enter INT0 interrupt to read the coordinate value. The problem...
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]
I have read the source code of mbed these days, and the interface encapsulation for upper-level application calls is quite good. The code quality is relatively high, the comments are also very detai...[Details]
Regarding the PHY construction of LWIP, the PHY chip used is LAN8720A, RMII mode. Regarding the hardware connection part, the Atomic board F407 is used, and the hardware connection is as follows: ...[Details]
After studying the F4 FSMC method to drive the touch screen for a few days, I have gained some understanding, which are listed below. The unorganized record is only for my own reference in the future...[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]
On April 18-19, 2018, at the "Second Distributed Photovoltaic Carnival" held in Hangzhou, Jinko Power and China New Energy Assets Investment, Financing and Trading Platform (hereinafter referred to as...[Details]
In most countries, the military is a fairly large group, and the health of soldiers is particularly important to the combat effectiveness of the army. The US Department of Defense's Advanced Resear...[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]
This paper proposes a design scheme for an embedded CNC system based on ARM and FPGA. The software and hardware design of the ARM system, the implementation method of hardware fine interpolation ...[Details]
Recently, Jiangsu GoodWe Power Technology Co., Ltd. ("GoodWe") unveiled two products of the SDT family, the 17kW smart photovoltaic inverter GW17KN-DT and the 20kW smart photovoltaic inverter GW20KN-D...[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]
Today’s medical devices are filled with increasingly complex electronic devices that monitor, display, assist and warn patients. The latest generation of medical device electronic devices are smaller...[Details]
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