I wrote an Android app and used the following Android code to send a character. I want to know which callback of Bluenrg will be called after sending the character?
BluetoothGattService gattService =
...
[i=s]This post was last edited by jameswangsynnex on 2015-3-3 19:59[/i] [:)][:)]The naming convention of Acer notebooks: Travel Mate is positioned for business applications, and generally uses ordin...
For the home LED clock, a low-power sleep mode chip was selected mainly to save power, but the effect of the crystal oscillator frequency on the overall current is unknown, and the parameter standards...
Reprint: Anxinke open source team is dedicated to writing and sharing the initial technical exchange of ESP32-A1S offline voice1. Introduction2. Offline speech framework2.1 Algorithm model WakeNet and...
As shown in the figure below, NMOS and PMOS are used as a protection circuit to prevent reverse connection of the power supply. [1] The circuit diagram of the PMOS tube is easy to understand. For the ...
On the afternoon of June 11, Xiaomi has just officially released the Xiaomi Mi Band 5. Compared with the previous generation, the Xiaomi Mi Band 5 supports dynamic dials, adds 5 new sports mod...[Details]
First, we need to focus on the various materials in the motor and examine them in the following order:
1. Insulation material: ensure the highest temperature it can withstand.
2. Magnet: ...[Details]
As one of the industry leaders in AR smart glasses, Epson has been deeply involved in the AR field for many years, adhering to the "economical, small, and precise" technology, and striving to create ...[Details]
According to foreign media reports, NI of the United States announced the launch of its latest advanced driver assistance system (ADAS) and autonomous driving (AD) products: a unified test system arc...[Details]
Regarding exception handling, it is divided into three parts: 1. ARM exceptions and modes: core operations when handling exceptions, introduction to several modes. 2. Vector table: 3. Exception prio...[Details]
Inductors are commonly used components in PWN DC/DC converters. Since their current and voltage phases are different, theoretically, their losses are zero. Inductors are often used as energy storag...[Details]
introduction
With the continuous development of network technology and secure electronic transactions, the issues of user identity authentication and data security have received increasing att...[Details]
1 Overview
With the development of microelectronics technology, airborne computer hosts using large-scale and ultra-large-scale integrated circuits have become increasingly miniaturized, which...[Details]
Improving conversion efficiency is an important part of optimizing the performance of power supply systems and achieving "savings". The reason is that various energy-saving and environmental protectio...[Details]
Problems with printf in mplab and iar (the first item below has been verified by Lei Qingsheng 2017-10-24 20:18) 1. To use PRINTF in MPLAB PIC microcontroller, add the following function to your proj...[Details]
According to foreign media reports, Nvidia may have a solution to one of the biggest challenges facing self-driving cars: how to deal with emergency vehicles on the road. Vehicles equipped with N...[Details]
1 Introduction After use and development, there are many serial communication interface standards, but they are all improved on the basis of RS-232C. The RS-232C standard is a communication protocol ...[Details]
Recently, Shandong Province issued the 2022 "Stability and Progress" high-quality development policy list (first batch), including two parts: "2021 Policy Package Classification Implementation List" ...[Details]
Introduction
With the increasing diversification of navigation system functions, more complex software algorithms and higher integration requirements, designing, verifying and testing navigatio...[Details]
Analog electronics
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