ATQR15

Recently, due to project requirements, we need to implement the online upgrade function of STM32, namely IAP. I would like to share with you the learning experience and specific implementation of IAP...[Details]

void ADC_Init(void) { // PA1 -- battery voltage sampling pin -- floating input GPIOA- MODER &= ~GPIO_MODER_MODER1_1; // floating input GPIOA- MODER &= ~GPIO_MODER_MODER1_0;  GPIOA- PUPDR &= ~GPIO_PUP...[Details]

Miscellaneous notes on learning C language for 51 single-chip microcomputer Learning single-chip microcomputers is not an easy task. First, you need to buy expensive programmers and simulators, and s...[Details]

    The default working frequency of S3C2440 CPU is 12MHz or 16.9344MHz. The one used on my 2440 development board is 12MHZ, and the most used one here is 12M. Using PLL circuit can generate higher ma...[Details]

#define key_input PIND.7 // Key input port #define key_state_0 0 #define key_state_1 1 #define key_state_2 2 char read_key(void) {                 static char key_state = 0;                 c...[Details]

X1226 has the functions of clock and calendar. The clock relies on hour, minute and second registers to track, and the calendar relies on date, week, month and year registers to track. The calendar c...[Details]

With the rapid development of industries such as communications, computers, and consumer electronics, the printed circuit board (PCB) industry is also developing rapidly, and has put forward higher an...[Details]

0 Introduction With the construction of a large number of modern residential areas in China, people's demand for fire prevention, anti-theft and remote power on and off of household appliances...[Details]

1. Compilation process and GCC options 1.1. The compilation process includes:        Preprocessing (.i) - Compile (.s) - Assemble (.o) - Link (executable file) 1.2, gcc compilation options: gcc f...[Details]

First of all, what is FSK? FSK (Frequency-Shift keying) is translated into Chinese as frequency shift keying, which uses the frequency change of the carrier to transmit digital information. FSK can ...[Details]

Tickets are tickets for watching the Olympics, concerts, and attending high-level conferences. With the development of high-quality image input and output devices, especially the emergence of col...[Details]

1. References       "STM32F1 Development Guide - Library Function Version" - Section 5.1 Introduction to the delay folder        "Cortex-M3 Authoritative Guide - Chinese" - Chapter 8, the last se...[Details]

1. Explanation of some common English abbreviations in ARM MSB: most significant bit; LSB: least significant bit; AHB: Advanced High-Performance Bus; VPB: VLSI peripheral bus that connects on-chip an...[Details]

Simulate I2C to read the date and time in the clock chip PCF8563  #define SCLK_Clr() GPIO_ResetBits(GPIOD, GPIO_PIN_1) // Clock signal of SDA IIC interface #define SCLK_Set() GPIO_SetBits(GPIOD, GP...[Details]

I. Overview: The s3c2440A provides three independent asynchronous serial ports, each of which can operate in interrupt mode and DMA mode, that is, the UART can generate an interrupt or DMA request fo...[Details]