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STM32 SPI interface read and write SPI flash experiment

STM32 SPI flash read and write test experiment report 1. Experimental Purpose 1. Learn the basic working principle of SPI 2. Deepen your understanding of STM32SPI through experiments 3. Use STM32's SPI11 and SPI interface flash chip to communicate, read and write tests, and print the test results through the serial po

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STM32 SPI interface read and write SPI flash experiment

STM32 common error analysis

1.warning: #550-D: variable "d" was set but never used Description: The variable 'd' is defined but never used, or, although you use this variable, the compiler thinks that the statement where the variable d is located is meaningless, and the compiler optimizes it. Solution: Carefully consider whether the defined vari

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Note on calling system functions in interrupts when using freertos in STM32

The priority of the CORTEX kernel is that the smaller the value, the higher the priority, that is, 0 is the highest priority. FreeRTOS is just the opposite. In order to meet the high real-time requirements of some applications for interrupts, after the interrupt priority is higher than a certain value, the kernel func

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STM32 SPI query mode transmission test

environment: Host: WIN7 Development environment: MDK4.23 MCU:STM32F103CBT6 illustrate: The software sets the NSS foot and transmits using the query method source code: Initialization code: // Turn off SPI SPI_Cmd(SPI1,DISABLE); //Initialize the SSN pin of the SPI interface and the RST pin of NTRX

[Microcontroller]

STM32 Basic Design (4) --- DMA Communication

The previous articles introduced the GPIO port operation, serial port operation, and interrupt operation of STM32 F103C8. Today's article briefly introduces the DMA operation of STM32. This article uses a small design to explain how to copy the data in an array stored in the STM32 to a second array through DMA opera

[Microcontroller]

STM32 timer encoder mode calculates the number of AB phase pulses of the reduction motor

The STM32 timer encoder mode calculates the number of AB phase pulses of the geared motor, triggered by the rising and falling edges of the AB phase pulse, and then the counter is incremented by one. If a cycle is detected with two phases AB, two rising edges and two falling edges, the counter will be incremented by f

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STM32 timer encoder mode calculates the number of AB phase pulses of the reduction motor

stm32 ADXL345 sensor

Acceleration sensitivity axis The corresponding output voltage increases when accelerating along the sensitive axis Register Map Register Definition 0x31—DATA_FORMAT SELF_TEST bit: When set to 1, the self-test force is applied to the sensor, causing the output data to transition. When the value is

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Problems with setting Systick priority in STM32 V3.5 library

The previous old version of the library uses the following function to set the priority of Systick. However, the new V3.5 library does not contain this function. I searched for a long time before I got the answer. I found that many of the answers on the Internet are wrong and misleading. NVIC_SystemHandlerPriorityConf

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