I am a novice who is using the dsp5509a board to do a two-telephone communication experiment. I still don't understand how to use the dtmf program to implement dialing, calling, and ringing. . ....
I would like to ask if after the STM32 initialization tells the crystal oscillator to judge that it is stable, after the I/O, TIM, and USART are initialized,should a delay be added before entering the...
It is rare to see information about how to send a frame of data in an interrupt manner. If the data frame is sent while waiting, it is a waste of time for a high-speed microcontroller. The following i...
May I ask what testing methods are there for the video intercom system of the intelligent community (including intercom extensions, management machines, door machines, etc.)?...
"Originally, there are many people who can design very good
chips
, but the market does not give domestic
chips
the opportunity to iterate, and domestic companies cannot give engine...[Details]
For STM32, there are two ways to reset the software: 1) Use the official software library The system reset function is directly provided in the stm32f10x_nvic.c file of the official software li...[Details]
Leading Chinese PV inverter manufacturer Huawei said it is supplying string inverters to a 75MW fully digital utility-scale solar project in Brazil, which it claims is the first of its kind in the cou...[Details]
ADC Introduction: ADC (Analog-to-Digital Converter). That is, converting analog signals into digital signals for processing. When storing or transmitting, analog-to-digital converters are almost ...[Details]
When STM32 uses JTMS (PA13) and JTCK (PA14) as normal I/O ports, add the following code before initialization (the order cannot be reversed): RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE); G...[Details]
;The hardware connection circuit of the 51 single-chip microcomputer is as follows: ;P1.3 and P1.4 are each connected to a button; ;P0.0 and P0.3 are each connected to a light-emitting diode; ;P2.0~P...[Details]
//Environment: winavr+avr studio char temp=0; ISR(TIMER1_COMPA_vect )//interrupt function { // user code here temp++; if (temp==10) temp=0; PORTA=temp; DDRA=0xff; } void ...[Details]
What else can we do before the arrival of 5G
,
which will be officially commercialized in 2020
? Let's follow the network communication editor to learn about the relevant content.
I...[Details]
International Solar Photovoltaic Network News: On November 21, Australia's SMA Solar Technology Co., Ltd. signed a contract with the local government to provide photovoltaic inverters with an insta...[Details]
#include MSP430x12x2.h #define TEM_ADC_CHL 0x0a void InitSys(void); void Read_ADC(unsigned int INCH_channel); void ADC_TO_TEM(void); unsigned int ADC_sample_val; unsigned int long temp1,temp2;...[Details]
MSP430 uses ADC10 to measure the voltage of the temperature diode inside the chip #include "msp430x22x4.h" //This program uses ADC10 to measure the voltage of the temperature diode inside the chip ...[Details]
"When the spring breeze blows, the horses gallop." This is
a true portrayal of the development of
NB-IoT
(Narrowband Internet of Things) in China and even the world in the past two years. Le...[Details]
Recently, the Ericsson Mobility Report pointed out that
5G
is expected to be deployed first in dense urban areas to support eMBB (enhanced mobile broadband) services. The report predicts th...[Details]
DSP and ARM Processors
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