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Previous remarks After a few twists and turns, the next night I came here, it was rained heavily and there was a power failure. Now everything is back to normal and I'll make up for the records from the previous days. Today's Content The digital tube is used to display numbers, and keys are used to control addition and subtraction. Devi ...

preface In this section, we will describe and introduce the general timer function of STM32, and also summarize STM32 (VI) and STM32 (VII) ---------------------— catalogue 1. Introduction to general timer 2. Timer initialization function 3. PWM wave ---------------------— I Introduction of timer ------- 1. What is a universal timer? ...

preface This section will summarize STM32 (V) Each IO of STM32 can be used as an interrupt input port for external interrupts, which is also the strength of STM32. The interrupt controller of STM32F103 supports 19 external interrupt / event requests. Each interrupt has a status Bit, each interrupt / event has independent trigger and mask set ...

FreeRTOS operating system learning preface Interrupt is a very common feature of microcontroller. Interrupt is generated by hardware. When interrupt is generated, CPU will interrupt the current The MCU of Cortex-M kernel provides a nested vector interrupt for interrupt management Controller (NVIC). The NVIC of Cotex-M3 supports up to 24 ...

IIC Inter integrated circuit The serial bus is composed of data line SDA and clock line SCL, which can send and receive data. SCL: plays a control role in communication. SDA: bit transfer data. Software IIC: through the I/O port simulation of single chip microcomputer, use software to control I/O port to simulate communication waveform, an ...

1, Experimental purpose Familiar with the hardware connection of serial port of STM32 module;Master the initialization method of serial port, data sending and receiving function;Master interrupt initialization method and interrupt service function;The serial port debugging assistant on PC is used for programming, and the LEDs D7 and D8 o ...

Bibliography: single chip microcomputer principle and Interface Technology (compiled by Zhu Xiaohui Laiting) Application of single chip microcomputer: intelligent instrument; Mechatronics; Real time control; Distributed multi machine system; Application in human life.The main development trend of single chip microcomputer: CMOS; Low power cons ...

stay Last article In, an upscale method is reproduced, using state machine, function pointer, structure, structure pointer, etc. the exception is upscale, but there are some bug s. First, record the debugging process. Matrix debugging and other ideas debugging First, in the main function of the source code u8 Key_Value; int main(void) ...

Platform: Code Composer Studio 10.3.1 MSP430F5529 LaunchPad™ Development Kit (MSP‑EXP430F5529LP) Hard knowledge 16 bit timer B(Timer_B) and timer_ Like a, it is an important resource of MSP430 MCU. Timer_ B is often better than Timer_A more powerful, MSP430F5529 MCU timer_ The B timer has 7 capture / compare registers. Timer_B. featu ...

Harmony OS device development learning record (12) -- light the oled to display Chinese characters and pictures through I2C. Based on hispark wifi suite, harmony os 2.0 full code is adopted 1, See the schematic diagram to determine the hardware circuit Schematic diagram of oled 2, Create a demo file in the source code First, clone the dri ...