[size=4]ldr/str can only access 4 bytes of memory per cycle. If you need to read or write memory in batches, it is too slow. The solution is stm/ld[/size] [size=4]For example (uboot start.S line 537) ...
I have written an I2C code based on the STM8s library function, and encountered a problem. When reading data, after the timing resends the start signal, the SDA line is always low. I don’t know how to...
What's wrong with my keying program? Why is RA3 never 1? Can anyone help me figure it out? Thanks!
void main(void) {init_usart();TRISA= 0xCC;TRISB= 0x00;TRISC= 0Xc0; //RC7 is RX, set as inputTXREG='';...
Circuit grounding1 may look simple in a schematic; however, the actual performance of a circuit is determined by its printed circuit board (PCB) layout. Moreover, analysis of ground nodes is difficult...
My LCD is Innolux 5.6-inch AT056TN52. Symptoms: No backlight display, and the image is very weak. It feels like I can't emit any light, and I can only see the image with natural light. Reason: Every t...
introduction
Since the beginning of the 21st century, the world of information has changed rapidly. Maybe a high-tech product will be released today and a better similar product will be releas...[Details]
introduction
1 The significance of using RTOS on MSP430
It is understandable that it is meaningless to use RTOS on MSP430. Because the hardware resources of MSP430 are limited (for exampl...[Details]
1. Introduction
RFID (radio frequency identification) is a non-contact automatic identification technology that emerged in the 1990s. It uses the characteristics of radio frequency signal prop...[Details]
With the rapid development of science and technology, especially the widespread application of digital technology and various ultra-large-scale integrated circuits, electronic equipment, especially...[Details]
Electronic systems are located at different points on the automotive power bus and therefore often need to operate under very stringent power requirements. These include load dump, cold crank, very lo...[Details]
Battery life is critical for portable applications. For applications such as smoke detectors, security devices, and thermostats, factory-installed batteries need to last for more than 10 years. The...[Details]
AD8205 is
a single-supply high-performance differential
amplifier
launched by
Analog
Devices of the United States
. The typical single-supply voltage is 5V, and its common-mode volta...[Details]
1 Introduction
Building Automation System (BAS) is a distributed monitoring system (DCS) designed according to distributed information and control theory. It is the result of the mutual de...[Details]
1 Introduction
With the development of control, computer, communication, network technology, etc., a new control technology, namely fieldbus, has emerged in the field of industrial control...[Details]
1. Introduction
Testing the temperature of steel billets before rolling is an important measure to ensure the quality of steel. Traditional manual testing is difficult to ensure product qu...[Details]
introduction
MAX6636 is a multi-channel precision temperature monitor that can not only monitor local temperature, but also connect up to 6 diodes externally. Each channel has a programmable...[Details]
0 Introduction
High-precision current source can provide high-precision current supply for precision instruments, and is suitable for automatic measurement tasks of various resistors in semico...[Details]
The serial interface real-time clock chip DS1302 launched by Dallas Company in the United States can trickle charge the backup battery of the clock chip. Due to the main features of the chip such a...[Details]
Introduction
Nowadays, people pay more and more attention to the security alarm system, and people have higher and higher requirements for the functions and performance of the alarm. This paper prop...[Details]
0 Introduction
Ultrasonic waves
are mechanical waves with a frequency of more than 20KHz, and the propagation speed in the air is about 340 m/s (at 20°C). Ultrasonic waves can be gene...[Details]
Microcontroller MCU
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