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More exchanges, welcome tiktok, 81849645041 objective Familiar with the working principle of SD card and SDIO. Master the reading and writing of SD card. principle Most single chip microcomputer systems need large capacity storage devices to store data. At present, U disk, FLASH chip, SD card and so on are commonly used. They have their own ...

  Catalog 1. Set up GPIO: 2. printf redirection 3. Log information format 4. Personalized Output 5. CubeMX+HAL Open Serial Interrupt 6. Open external interrupt 7. Clock Tree Basic Operations 8. Universal timer configuration 9. CubeMX Configuration Timer (1) Set the timer clock to 72M (2) Select internal clock (3) Configure timer ( ...

LCD with 8080 timing There are four control lines of 8080: RD write enable, WR read enable, DC data / command and CS chip selection 8080 bus has many interfaces: 8 / 9 / 16 / 18 bit interface 8080 general timing Read timing LCD_CS = 0; //Film selection LCD_DC = 1; //Read data LCD_WR = 1; //No writing LCD_RD = 0; //Start readin ...

More exchanges, welcome tiktok, 81849645041 target The slave device EEPROM can read and write data. principle EEPROM is a memory that does not lose data after power failure. It is often used to store some configuration information for loading when the system is powered on again. The most commonly used communication mode of EEPROM chip is I2 ...

DHT11 module DHT11 is a wet temperature integrated digital sensor. The sensor includes a resistive humidity measuring element and an NTC temperature measuring element, and is connected with a high-performance 8-bit single chip microcomputer. Through the simple circuit connection of MCU and other microprocessors, the local humidity and t ...

1. Introduction to G4 series DMA First, introduce the DMA of G4 series. Although the G4 series of 32 is based on the M4 kernel, its DMA channel mapping is quite different from the common F407. First, paste some pictures in the reference manual: I don't know what you can think of after seeing these two pictures. I believe friends who have see ...

1, nRF24L01 + module introduction   nRF24L01 + is a single-chip 2.4GHz transceiver suitable for ultra-low power wireless applications. NRF24L01 + is designed to operate in the global ISM band of 2.400-2.4835GHz.   to design a radio system using nRF24L01 +, only a single chip microcomputer (microcontroller) and some external pas ...

preface This blog is based on your own needs and the needs of the interview position, so I specially come to learn the two common communication protocols SPI and IIC again. The development board used here is STM32F03_MIN I also hope this blog can be of some help to you! IIC protocol I ² C. Usually read as "i-Party C", ...

Sensors are often used in daily life, such as stair lights in buildings, street lights on roads and so on. So what is the role of sensors in mobile phones in particular? Android phones provide acceleration sensors, magnetic fields, directions, gyroscopes, light, pressure, temperature and other sensors. In Android system. The code distribution i ...

1. Preface Signed up for the seven day Internet of things smart home training camp organized by 100ask. I talked about the basics 2 hours in the morning and advanced 2 hours in the afternoon. After two days of study, I really feel more enriched. In the next few days, I will successively record the key points, difficulties and my understanding ...