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//头文件 #ifndef __always_inline__ #define __always_inline__ _Pragma("inline=forced")inline #endif #define AVR_GPIO_ASSIGN(name, port, bit) \ __always_inline__ static void GPIO_##name##_Set(void) ...[Details]
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#include // Header file containing 51 MCU register definitions
unsigned char code Tab ={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0xff};
// Segment code table of digital tube display...[Details]
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On the evening of March 14, Xiaomi Group issued an announcement stating that the U.S. District Court for the District of Columbia (hereinafter referred to as the Court) issued a temporary injunction ...[Details]
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In the first half of 2019, under the influence of factors such as Sino-US trade frictions, weakening market demand, and fierce competition, the gross profit margins of the three major domestic packag...[Details]
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3. Power supply and speaker protection circuit
Fig.11
The power supply and protection circuit are shown in Figure 11, and the PCB board is shown in Figure 12. The main power rectifier...[Details]
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Preface If we want to understand how a microcontroller runs a program, we first need to understand the composition of the microcontroller. Here we take the 80C51 microcontroller as an example to unde...[Details]
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The head of the multimeter is a sensitive ammeter. The dial on the head is printed with a variety of symbols, scales and values. The symbol A-V-Ω indicates that this meter is a multimeter that can me...[Details]
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ARM program status register:
The ARM architecture contains a Current Program Status Register (CPSR) and five Separate Program Status Registers (SPSRs). These registers are set and read using the MSR ...[Details]
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On July 23, Huawei offered a million-dollar annual salary package to eight top students of the 2019 class. The eight PhDs came from six universities: Zhong Zhao and He Rui graduated from the Chinese ...[Details]
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The following will analyze the subtle differences in the codes of the above four examples:
First, let's take a look at the contents of the msp430x20x2.h file. Since the header file contains a lot of...[Details]
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According to news on February 19, SPEC recently issued a compiler notice stating that it has recently discovered special optimization issues in the Intel oneAPI DPC++ compiler and announced that mor...[Details]
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Abstract: Here, a high-performance and high-stability TEC control circuit is designed using AD's thermoelectric cooling controller ADN8830. This circuit uses an external PID (proportional integral ...[Details]
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The video distributor can distribute one video input signal into multiple video output signals, or distribute one video input signal into two video output signals. Using a dedicated video operation...[Details]
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Finally, let’s talk about the relationship between i2c and smbus. First, the SMBus protocol is introduced in detail in a link: http://www.mjmwired.net/kernel/Documentation/i2c/smbus-protocol. My ...[Details]
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First look at the address line of 2440: mini2440 schematic.pdf
The 2440 chip provides 27 address lines = 128M.
The S3c2440 chip only provides 27 address lines addr on the pins provi...[Details]
RF/Wirelessly
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