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The epidemic has not slowed down, and the second extension of the Level 3 alert is imminent! Taiwan's "Minister of Health" Chen Shizhong announced on the 6th that there were a total of 343 local cas...[Details]
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#include hidef.h /* for EnableInterrupts macro */ #include "derivative.h" /* include peripheral declarations */ #define LED_D1 PTDD_PTDD0 #define LED_D1_DIR PTDDD_PTDDD0 #define LED_ON ...[Details]
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1. Add when compiling: -march = armv4 otherwise, volatile unsigned short *p = xxx; *p = val; //It will be split into 2 strb operations, which is 8 bits, but we want to write 16 bits at a time 2. Tu...[Details]
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The bus technology commonly used in microcontroller systems on the i2c bus. Here I will introduce to you a C51 language source program driven by the I2C bus. //#pragma ot(6,SIZE) #i nclude "AT89X52...[Details]
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The intelligent car system is mainly composed of functional modules such as path recognition, speed acquisition, steering control and vehicle speed control. The path recognition function uses a CMO...[Details]
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For a high-reliability system design, the choice of crystal is very important. In the oscillation circuit, the crystal should be neither over-driven (easy to oscillate to high harmonics) nor under-dr...[Details]
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On August 6, Midea Group officially announced that its new brand Bugu will reach a comprehensive ecological cooperation with the technology brand Huawei Honor to jointly build a full-scenario smart l...[Details]
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The AM radio is built around the 555 timer chip. The only active device (silicon, germanium, or other) is the LM555. Tuning is done by an inductor and capacitor, with the LM555 acting as an AM demo...[Details]
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Some time ago, a war over smartphone vibration motors was launched online, and "buzzing" became a new term. In fact, smartphones have developed rapidly in the past two years, and users have highe...[Details]
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Great companies are always market leaders, not followers. On the one hand, they seize the first opportunity and occupy the market high ground; on the other hand, in today's abundant material world, p...[Details]
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1. Phenomenon Platform: keil c51, Zhongying SH79F7019A Phenomenon: After adding an interrupt processing logic, the main program was found to be abnormal. Breakpoint debugging found that the param...[Details]
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Beijing, May 23, 2024 -
The Bluetooth SIG, the industry association responsible for regulating Bluetooth technology, today announced that Neville Meijers will serve as Chief Executi...[Details]
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This design uses AVR microcontroller, RS 485 technology and NTC thermistor technology to develop the remote temperature difference cycle controller.
1 System structure and working principle
The...[Details]
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By modifying the interrupt control register IP, interrupts can be nested and the interrupt priority can be modified. The specific C program is as follows:
#include reg51.h
#include intrins.h
#d...[Details]
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The 2-wire temperature sensor is a common temperature measurement device, which is widely used in industry, scientific research, medical treatment and other fields. This article will introduce in d...[Details]
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