The specific situation is as follows: 1. Currently, there are two ways to connect the cash drawer, one is to connect directly to the host, and the other is to connect to peripherals such as printers. ...
This video is based on a story between engineers. It introduces the concept of ADI laboratory circuits as reference circuits that have been verified and tested in a fresh and easy-to-understand format...
NiMH batteries also have a memory effect, but it is not as obvious as NiCd batteries. Lithium batteries have the least obvious memory effect. The lack of obvious memory effect means that they can be c...
As companies focus on developing new generations of smartphones like the iPhone 4, Droid X and Evo 4, it turns out that some of the biggest names in the wireless industry are also attracted to the pot...
ACPI is a more advanced and effective power management mode than APM. Using ACPI mode can save more power. What does this mean? The temperature of the CPUs that are "overclocked" by enthusiasts will b...
In the surveillance system project, for different formats, how to choose the hard disk capacity and recording time? In fact, this problem involves several aspects, one is the size of the video signal ...
In the actual project development process, it is common to encounter modifications to the hardware circuit, and then the modified part requires the modification of the driver. Thinking about the comi...[Details]
CMSIS Driver has similar API functions and similar calling methods. It is a further encapsulation based on the ST HAL library. It is much more convenient and simpler to use and configure than the ST ...[Details]
After we understand the use of libopencm3, we find that libopencm3 is only suitable for small projects. Its biggest feature is the convenience of USB. So when we configure large projects, is there a ...[Details]
Because the STM32 HAL library only has millisecond-level delay for HAl_Delay(), in order to achieve accurate microsecond-level delay, Systick has to be modified. However, since it is used internally ...[Details]
1. Initial understanding of FSMC: FSMC consists of 4 modules: (1) AHB interface (including FSMC configuration register) (2) NOR flash memory and PSRAM controller (when driving LCD, LCD is like a PSRA...[Details]
From last year to now, competition in the photovoltaic inverter industry has become increasingly fierce. In addition to the introduction of new products, various marketing and promotion methods hav...[Details]
In the Chinese automobile market, the trend of new energy vehicles and driverless cars is leading the transformation of China's automobile industry. As the world's largest automobile market, "Chinese...[Details]
Temperature, humidity and irradiance are must-measure items in the photovoltaic industry. However, most of the current data collection is done by storing data in USB flash drives for offline analys...[Details]
Notes on inverter installation and maintenance:
1. Before installation, you should first check whether the inverter is damaged during transportation.
2. When selecting an installa...[Details]
Household photovoltaic power stations mainly utilize idle resources on existing household buildings, such as roofs, wall facades, balconies, courtyards, etc., to install and use distributed photovo...[Details]
1) ADC multi-channel acquisition: (Multi-channel acquisition must use scanning mode. In scanning mode, the channels of the rule group share a register, so DMA transmission must be used; to prevent da...[Details]
The circuit shown in the figure requires that the light is off when the machine is turned on. Press the button once, and the light D1 will turn on and automatically turn off after a delay of 10 secon...[Details]
Assume that the MCS-51 microcontroller uses a 12MHz crystal oscillator, and wants to use a timer to generate a pulse with a duty cycle of about 30% and a period of 60ms at port P1.0. ;==============...[Details]