How is this company? As far as I know, this company used to make transformers. Today I received a call from their HR, asking me if I would like to work for them....
1) Is it necessary to use a protocol stack for the coordinator to communicate with the terminal? But why did I see someone not using a protocol stack before, but only compiling the application layer c...
Has anyone used virtual serial port hardware devices (industrial grade), such as Guangzhou Zhiyuan's NETCOM-10M, or Advantech's ADAM-4571 and similar products? How was the effect? Thank you!!...
Friends who work in the photovoltaic industry, do you still remember the hard work on June 30 last year? How many people worked late into the night for months in a row just to connect to the grid a...[Details]
0. Preparation First use st-link to connect the stm32 core board and PC for burning St-link Stm32 3.3V 3.3V GND GND SWDIO PART SWCLK DCLK Then connect with USB serial port board to v...[Details]
LAN8720 configuration: IP: 192.168.192.30 Gateway: 192.168.192.1 A high frequency of ARP packets is detected The content of the packet asks for the mac address of 192.168.192.1, and asks the resp...[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]
This routine is also a classic routine on the development board. I modified the framework of the program to make it more suitable for future calls. The specific 4*4 keyboard scanning principle is rel...[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]
This paper combines embedded control technology with network control technology to realize the design of temperature control system based on single chip microcomputer through Internet control. Th...[Details]
When Amazon quietly launched a product called Elastic Computing Cloud 12 years ago, the Internet industry in China, across the ocean, also ushered in an unprecedented development opportunity. Let's...[Details]
Site conditions: 1. AD acquisition, DMA transmission; AD is set to single-channel continuous mode, DMA is set to single-shot mode. The upper threshold of the AD analog watchdog setting is less than t...[Details]
The independent watchdog of STM32 is driven by a dedicated internal 40Khz low-speed clock, that is, it is still effective even if the main clock fails. Here we need to note that the clock of the inde...[Details]
Here is the temperature added in the previous chapter The above figure is the temperature calculation formula: where Vsense is the ADC value collected from the temperature channel. The stm32f407 ...[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]
This program sets the LED running light and the 0-16 numbers of the 0th position of the digital tube to light up in a cycle. The digital tube program cannot be put into the main function, because the...[Details]
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