When using serial port communication on the stm32 development board, the following error is displayed after compiling the program. ..\USART.axf: Error: L6218E: Undefined symbol __vfscanf_char_file (re...
I recently disassembled a thermal imaging camera from BMW. The FPGA inside is ALTERA's EP3C25U256A7N. I want to try to reverse engineer the PCB and directly develop on this FPGA. The PCB seems to have...
"3.3.2 SysTick" in the article "How to upgrade from STM32F10xxx firmware library V2.0.3 to STM32F10xxx standard peripheral library V3.0.0" says:The SysTick driver has been removed from the standard pe...
I used DDK to make a USB driver, which can communicate normally. But when writing to Pipe1 port in a loop, the driver stops responding after several times. When debugging, I found that it stops at sta...
I have played with DSP and M4 before, but I don't know how to transfer to FPGA. I can't even understand the schematic diagram... Why does an FPGA have to be divided into so many modules......
I have the hardware circuit diagram, and I need the program, which can be written in assembly or C language. Please help me, if you are interested, please contact QQ: 226600569. Very urgent! QQ online...
As a natural human-machine interface, voice can make the in-vehicle navigation system safer and more user-friendly. Through the functional comparison of domestic and foreign in-vehicle navigation s...[Details]
1 Introduction
The multifunctional monitor is a commonly used clinical medical device. It can display the patient's electrocardiogram (ECG), respiration (RESP), blood oxygen saturation (SP...[Details]
The circuit shown in the figure is a three-digit tachometer used to measure low frequency signals with a repetitive time interval of 0.235 to 15 seconds. The tachometer has a speed range of 4 to 255 r...[Details]
This article discusses how to use an ultra-low-power RF transceiver chip from Zarlink Semiconductor for pacemakers, neurostimulators, drug pumps, and other such implantable medical devices t...[Details]
The hardware circuit principle is shown in Figure 1. In the specific design, each part should consider the anti-interference problem to minimize the impact of interference on the performance of the...[Details]
Engineers who are new to wireless design and wireless product development need to master the basics of
RF measurement
. In many cases, this process is to enable engineers who have been engag...[Details]
introduction
With the rapid development of my country's aviation industry, various new aircraft and control equipment have been successfully developed. Some previous measurement and control eq...[Details]
Lithium-ion batteries have a high energy-to-weight and energy-to-volume ratio, no memory effect, can be recharged many times, have a long service life, and are becoming increasingly cheaper. A good...[Details]
This article first briefly introduces the working principles of current mode and voltage mode and their respective advantages and disadvantages; then discusses the ideal voltage mode using output c...[Details]
Today's mobile phone production testing faces an increasingly complex environment, with challenges of multiple frequency bands and multiple standards, pressure on production test speed, and pres...[Details]
Semiconductor devices used in high-end computing (advanced microprocessors) and consumer electronics (graphics and gaming chipsets) devices generally provide data rates up to 6.4Gbps through hig...[Details]
In the issue of ensuring the safety of drivers and pedestrians, the proportion of electronic technology has increased. According to the survey, 80% to 90% of traffic accidents are caused by driver...[Details]
introduction
With the increasing popularity of Internet applications, the degree of information sharing is constantly improving. The digitization and networking of embedded devices has b...[Details]
Although the human eye is very good at distinguishing colors, different people can describe the same color differently, which means that verbal descriptions are not enough in applications that requ...[Details]
The full name of RFID is Radio Frequency Identification, which uses radio frequency to realize data transmission between programmable controller (PLC) or microcomputer (PC) and identification, ther...[Details]