I am using LM4F230, Stellaris WARE 9453. The loop is 3 cycles when using ROM_SysCtlDelay. The loop is 6 cycles when using SysCtlDelay. I don't know why this happens. How many cycles does the loop take...
1. What is the difference between real-time debugging tools and traditional emulators ?
DSP focuses on data stream processing, while MCU ( such as X86 , ARM) focuses on event processing. Data streams ...
Recently, Qorvo published an article about its power management chip products for compact designs. Let’s take a closer look at this power management solution.
Qorvo's power management chip family is m...
[size=5][color=magenta]I light a fire and hope everyone will follow, let’s learn MSP432 together...[/color][/size] [size=5][color=magenta]Forum friends who know AMR Cortex M4, please read the MSP432 m...
The most significant event in the technology circle during this period is undoubtedly the news that ZTE was banned by the United States. Once the news came out, it shocked the entire Chinese techno...[Details]
1. Problem When developing STM32 with IAR, I found that I could not print floating point numbers by redirecting printf to the serial port. The code is as follows: The output is as follows: It can...[Details]
This small program is still the use of timer, which is relatively simple. The specific parts are noted in the comments, please refer to the comments. /*********************************************...[Details]
What is SYSTICK: This is a 24-bit system tick timer, SysTick, with automatic reload and overflow interrupt functions. All microcontrollers based on the Cortex_M3 processor can obtain a certain time ...[Details]
In recent years, in order to meet the needs of social development, more and more companies have entered the fields of smart phones, artificial intelligence,
VR
, AR, etc. After seeing the d...[Details]
In 2018, the National Development and Reform Commission issued a new photovoltaic subsidy policy. The benchmark on-grid electricity price was significantly reduced, the return on investment decreased,...[Details]
Independent watchdog (IWDG) and low power mode are often used in STM32 development. The watchdog is to detect and solve faults caused by software errors, and the low power mode is to enter sleep mode...[Details]
STM32 has 2 watchdogs: independent watchdog and window watchdog. Independent watchdog IWDG: A system fault detector that is independent of the system and is not affected by the system because it has ...[Details]
The calculation formula of the watchdog feeding time (watchdog overflow time) is: Tout=((4*2^prer)*rlr)/40 Tout is the watchdog overflow time (in ms), prer is the watchdog clock prescaler value (...[Details]
I have been deeply affected by serial ports since 51. The MAX232 I bought from Huaqiang was originally broken. I thought there was something wrong with my circuit or schematic. Since there was no goo...[Details]
The STC12C5412AD microcontroller is an enhanced 8051 standard 51 series microcontroller. It is 12 times faster than the ordinary 8051 and can be programmed on a home computer without an emulator. ...[Details]
Homemade LED Electronics Clocks can be seen in many electronic newspapers and magazines, but most of them need to reset the time and other parameters after power failure, which brings a lot of inco...[Details]
According to data released by WitsView, among the top six TV panel companies in 2017,
Samsung
's TV panel production capacity declined the fastest, reaching -15.4%. However, this does not m...[Details]
In the first quarter of 2014, Inspur's
server
shipment market share reached 19%, ranking first in China and fifth in the global market. This is the first time a Chinese manufacturer has ach...[Details]
An example of Samsung S3C/S3P/S3F9XXX series MCU implementing table lookup operation ; to implement table lookup operation, you must first define the table address, there are two ways t...[Details]
Microcontroller MCU
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