-
I made a learning infrared remote control switch using STc15f104e. It is power-on learning without buttons. = The power-on learning indicator light flashes, press the remote control, the indicator l...[Details]
-
First, let’s talk about what port multiplexing is. STM32 has many built-in peripherals, and the external pins of these peripherals are multiplexed with GPIO. In other words, if a GPIO can be multiple...[Details]
-
Application background In some special protected environments, the measured object can only be measured through one aperture (such as a hole, pipe...), and the requirements for protective measures ar...[Details]
-
ARM changed the name of its products after the classic processor ARM11 to Cortex, and divided them into three categories: A, R and M, aiming to serve various markets. The Cortex series belongs to the...[Details]
-
assert_param can be found everywhere in the HAL library functions of STM32. So what is its function? First, let’s look at where it is used: The purpose here is obvious, it is to check the pa...[Details]
-
(1) Example 1: TST and BNE TST r0,#02 BNE sleep LDR r1,#0 Explanation: Bit comparison, first perform AND operation, if the second bit of r0 is not 1, the result of AND is 0, set the flag bit zero...[Details]
-
The iPhone 12 series has been successfully released, and its parameters have also been exposed by the Ministry of Industry and Information Technology. First is the iPhone 12 mini, model A2400, whic...[Details]
-
1. Use of ATMEGA16 I port: (only one experiment, each section below may have several experimental verifications, you know) 1--(01)--Use of 4*4 matrix push button switch I/O port introduction: Jus...[Details]
-
Printers are currently classified into two main categories: line printers and page printers. Dot matrix and inkjet printers are line printers; laser printers are page printers. There are two types...[Details]
-
Multimeters and oscilloscopes are both commonly used tools. Multimeters and oscilloscopes are very familiar to electronic engineers. They can be said to be indispensable tools for research and deve...[Details]
-
When backlight applications are saturated, the most promising and anticipated application market for LEDs will shift to general lighting. Currently, the penetration rate of LED backlights for TVs h...[Details]
-
describe
The LTC®3852
is
a constant frequency, current mode, step-down DC/DC controller that can be powered by an on-board charge pump. Input supply voltage as low as 2.7V, when do...[Details]
-
The sound control circuit uses sound to control the circuit. It does not need a special remote control transmitter like wireless remote control and infrared remote control, so it is widely used. The...[Details]
-
Have you ever needed a simple, low-cost latch circuit? Figure 1 shows such a circuit that provides power-failure protection with just a few bucks of components, essentially a silicon-controlled rec...[Details]
-
Analysis process:
Program entry
Phase 1 Program Analysis
Second stage program analysis
2440 Development Board:
1.uboot entry:
To see the entry of...[Details]