NH4AM69V800-8

How to improve the anti-interference of single-chip microcomputer so that you can avoid detours Friends who have worked on products have all experienced that a design seems simple, and the hardware d...[Details]

Just now a young man asked the following question on the forum: I am studying the 2440+WinCE5.0 system and am looking at interrupt related topics.  Find the following code in the file 2440init.s  ...[Details]

Purpose: Use serial port 1 to continuously print a message to the computer, receive data from the serial port at the same time, and send the sent data directly back to the computer.   exper...[Details]

FIQ (Fast Interrupt Request) FIQ exceptions are designed to support data transfer or channel processing. In ARM state, the system has enough private registers to avoid the need for register preservat...[Details]

ARM has seven modes, and we will only discuss SVC, IRQ and FIQ modes here. We can assume that the ARM core has two interrupt pins (actually invisible), one is called irq pin, and the other is called ...[Details]

Write a program with the following functional requirements: when the level of the P1.0 pin changes positively, count the input pulses of P1.1; when the level of the P1.2 pin changes negatively, stop ...[Details]

1. Program running out of control: The value of the program counter (PC) in the microcontroller is beyond our expectations. An abnormal deviation has occurred, deviating from the location where the...[Details]

Homework: Expand the value at 30H of the on-chip RAM (which is a compressed BCD code) into uncompressed BCD code and put it at 41H and 42H. (The high bit is placed at 41H)     . This question is not...[Details]

Preface:             The capture PWM wave of STM32's TIM is for frequency and duty cycle, these two data results! Its most basic principle is (for example): for example, when a high-level rising edge...[Details]

#include "My_Usart.h" void Init_Usart(u32 bound) {     RCC- APB2ENR |= 1 2; //Enable GPIOA clock     RCC- APB2ENR |= 1 14; //Enable USART1 clock     GPIOA- CRH &= 0XFFFFF00F; //PA9 TX multiplexe...[Details]

In the relevant single-chip circuit, the minimum system includes an RC power-on automatic reset circuit. The RC power-on automatic reset circuit (hereinafter referred to as the RC circuit), as the nam...[Details]

I think power management and monitoring is a very complex and difficult part to master. It not only involves the selection of source mode, but also involves complex interrupts and how to handle interr...[Details]

If you get a chip and want to use it, you must first know how to connect it. The chip we use is called 89S52. Let's see how to connect it. 1. Power supply: This is of course essential. T...[Details]

#include "stm32f10x.h" /** @addtogroup STM32F10x_StdPeriph_Examples   * @{   */ /** @addtogroup TIM_7PWM_Output   * @{   */ /* Private typedef --------------------------------------------------------...[Details]

    The CAN bus was first designed by the German company BOSCH to solve the monitoring and control system of automobiles. Now, it has expanded from the automotive industry to the process industry, me...[Details]