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When using FreeRTOS with stm32f4-discovery, a key interrupt is set , but the program gets stuck after the interrupt occurs. Through debugging, it is found that the program is stuck in the configASSER...[Details]
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STC89C51 and 52 have 2K bytes of EEPROM, 54, 55 and 58 have 16K bytes of EEPROM. STC microcontrollers use IAP technology to implement EEPROM. The internal Flash can be erased and written more than 10...[Details]
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Although there is still a large wave of new Snapdragon 888 phones that have not been released this year, it is certain that most or even the vast majority of flagships will not be equipped with...[Details]
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At present, many ordinary consumers still have doubts about the durability of power batteries in new energy vehicles. However, in some specific areas, new energy vehicles are showing their talents. H...[Details]
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IC synchronous detection circuit with input signal frequency up to 2MHZ
Function of the circuit
MC1496 is widely used as an IC balanced modulation circuit. The basic connection of the circuit ...[Details]
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1. Register If you want to learn about interrupts, you must first understand registers. Here we will learn what registers are and how to use them. 1. What is a register? Registers are special RAM. ...[Details]
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introduction
Frequency hopping communication is the main means to ensure normal communication in a harsh electromagnetic environment. Improving the frequency hopping rate and frequency hop...[Details]
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TCL issued an announcement stating that: On September 17, 2020, the China Securities Regulatory Commission (hereinafter referred to as the "CSRC") Listed Company Merger and Acquisition Review Committ...[Details]
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Recently, Yuchuang Semiconductor received nearly 100 million yuan in Series A financing from Heli Capital. The funds will be mainly used for the research and development and testing of MicroLED, OLED...[Details]
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The figure shows an application circuit using W723 multi-terminal adjustable integrated voltage regulator to form an adjustable output voltage of 10~37V and an output current of 2A.
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The microcontroller used is EM78 series, and the emulator used is ICE468.
int 1byte , long 4byte
Bit data type cannot be used as a return value.
Double and float are NOT supported by the EM78 S...[Details]
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After powering on, the self-test passed, the reflection measurement worked normally, but the transmission measurement worked abnormally, the signal was about 30dBm lower and the curve was uneven. A...[Details]
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Memory interface concept: Usually, ARM chips have very little built-in memory. To run Linux, memory expansion is required. ARM9 uses SDRAM memory for extended memory, and ARM11 uses DDR SDRAM. S3C244...[Details]
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Problems faced by traditional access control In the traditional access control card system, if the user loses or forgets the access control card during use, he will be embarrassed and unable to pa...[Details]
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In the 1990s, with the widespread application of graphics processing technology and multimedia technology, after the graphical user interface (GUI) represented by Windows entered the PC, high-speed...[Details]
PCB Design
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