1. If the MCU has a serial port peripheral, plus a level conversion chip, such as MAX232, SP3485, it is the RS232 and RS485 interface. 2. RS485 uses differential signal negative logic, +2~+6V represen...
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SMS sending and receiving ShenDa PDA sends short messages, and the server receives the mobile Windows Mobile system using the public network, the server receives, two programs contact QQ 412925762...
When communicating with the lower computer, I send a command but there is always no return value. I don't know why. Is there any way to solve it? Change the baud rate? Increase the waiting time?...
[i=s]This post was last edited by chenbingjy on 2016-5-19 11:55[/i]It says that after compiling, three image files will be generated in the directory /out/target... I have compiled it, why can't I fin...
Although DIY Tool Hunt is a sub-forum, it carries the hope of every DIY lover. The world is full of wonders. There are always tools you have never seen and DIY methods you have never thought of. Requi...
The most significant event in the technology circle during this period is undoubtedly the news that ZTE was banned by the United States. Once the news came out, it shocked the entire Chinese techno...[Details]
In our common sense, the word technology often has two definitions. The first is the technology sealed in the laboratory. They are like flowers on the mountain top. Only a few people on the mountai...[Details]
On April 24, Sungrow released its annual financial report. The report shows that in 2017, Sungrow's global shipments reached 16.5GW, of which domestic shipments reached 13.2GW, a year-on-year incre...[Details]
The Wassenaar Arrangement, everything started during the Cold War. Let's learn more about it with the embedded editor.
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After the end of World War II, the United States ...[Details]
This program mainly uses the comparison output function of the timer to generate PWM waves to control the LED. The comparison output of timer A corresponds to P2.3 P2.4. Therefore, a matching working...[Details]
1. Brief description A summary of "How to build uClinux kernel transplantation on ARMSYS development board with S3C44B0X as core", including the analysis of Bootloader function and the key co...[Details]
The first one is a DMA mode of multiple channel acquisition void ADC_DMA_Config(void) { ADC_InitTypeDef ADC_InitStructure; RCC_HSICmd(ENABLE); while (RCC_GetFlagStatus(RCC_FLAG_HSIRDY) == RESET); ...[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]
I have been working on single-chip microcomputers for several years, and I have always wanted to make a series of summaries. It happened to rain today. As the saying goes: Rainy days are good for...[Details]
I have been deeply affected by serial ports since 51. The MAX232 I bought from Huaqiang was originally broken. I thought there was something wrong with my circuit or schematic. Since there was no goo...[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]
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]
MSP 430 MCU key program #include msp430x14x.h #include "key.h" void Init_Port(void) { //Set all pins of P1 port to input mode during initialization P1DIR = 0; //Set all pins of ...[Details]
Microcontroller MCU
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