The Bluetooth SIG's Bluetooth Core Specification Version 4.0 is more than just a quick read; it's a detailed document in six volumes totaling 2,302 pages. Adopted in 2010, the specification describes ...
The gas station operation safety regulations implemented since 2008 clearly prohibit the use of mobile phones in gas stations. However, with the continuous development of mobile payments, many people ...
Below are two circuit diagrams given by TL082. I used Tina to simulate and saw the simulation results, but I don’t understand the principle of the circuit. I would like to ask for detailed guidance fr...
I recently wanted to learn ARM design, and found that most development boards use two SDRAMs. I don't understand why they don't use a single large-capacity SDRAM instead?...
I believe you have seen many kinds of BT mice, but this terrifying mummy mouse is really rare. Don't worry, this is not made of real bones, it's just a fabricated effect....
【JDPCB】Qisda is introducing smart factories in phases. Chairman Chen Qihong said yesterday (25th) that through high automation, order delivery can be accelerated. The current benefits have reached a...[Details]
Using Systick timer to achieve delay 1. SysTick timer characteristics The SysTick timer is a 24-bit down counter, that is, when vlue is decremented to 0, an interrupt is triggered and the load va...[Details]
In 2018, the National Development and Reform Commission issued a new photovoltaic subsidy policy. The benchmark on-grid electricity price was significantly reduced, the return on investment decreased,...[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]
At this exhibition, Microsoft brought its flagship intelligent voice products - XiaoIce and Xiaona. In addition, the voice will be equipped with an intelligent face recognition system. Let's see ho...[Details]
If you do not use an external crystal on the STM32, the connection method of OSC_IN and OSC_OUT If you use the internal RC oscillator instead of an external crystal, please follow the following metho...[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. What is PWM What is PWM? Professionally speaking, it is pulse width modulation. In layman's terms, it is the continuous output of high and low levels. For example, the microcontroller outputs...[Details]
/*----------------------------------------------- Name: IIC protocol PCF8591 AD/DA conversion Content: Use DA input, digital tube display output digital quantity, LED display analog voltage size ...[Details]
Take serial port interrupt as an example: like: void serial() interrupt 4 { } and void serial_uart() interrupt 4 { } The functions of both functions are to define the serial port interrupt function. ...[Details]
Today, the country attaches great importance to the Internet of Things, and the Internet of Everything has become the vision of all people in related industries. However, at the same time, masterin...[Details]
The STC12C5412AD microcontroller is an enhanced 8051 standard 51 series microcontroller. It is 12 times faster than the ordinary 8051 and can be programmed on a home computer without an emulator. ...[Details]
As one of the four major Chinese cool alliances, ZTE Mobile undoubtedly has a relatively deep foundation. However, this mobile phone brand has gradually declined in recent years. Now it is hoping t...[Details]
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