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PWM - pulse width modulation PWM module can generate PWM signal on GPIO. The module implements an up or down counter with four PWM channels to drive the allocated GPIO. Three PWM modules can provide up to 12 PWM channels and up to 4 channels with a separate frequency control group. In addition, the built-in decoder and EasyDMA function can man ...

In tutorial update: ThreadX USBX protocol stack tutorial update record post, released in the first five chapters (2021-10-11) - UCOS & ucGUI & EMWIN & embos & touchgfx & ThreadX - tough guy embedded Forum - Powered by Discuz!http://www.armbbs.cn/forum.php?mod=viewthread&tid=108546 Chapter 3    Transplant Thre ...

The previous two articles (Register Configuration Lighting LED and Device Tree Lighting LED) are essentially register configurations to control the lighting of LEDs. The direct operation of registers is to write the register information related to the LED directly into the driver code of the LED, which is also a more general control method. Ho ...

1. What is the object? The object type enumeration is defined as follows: enum rt_object_class_type { RT_Object_Class_Thread = 0, /* The object is a thread */ RT_Object_Class_Semaphore, /* The object is a semaphore */ RT_Object_Class_Mutex, /* Objects are mutexes */ RT_Object_Class_Event, /* Objects ...

PWM mode The pulse width modulation mode can be generated by TIM1_ The ARR register determines the frequency, which is determined by TIM1_ The ccrx register determines the signal of the duty cycle. At TIM1_ The OCxM bit in ccmrx register is written to '110' (PWM mode 1) or '111' (PWM mode 2), and each OCx output channel can be independently se ...

1, Introduction C language is intuitive, easy to use, widely applicable, efficient assembly language and less memory. The combination of the two is the best choice 2, Example Title Requirements Refer to the attachment to complete the C language call assembly functionModify the reference code and require the original assembly language ...

stay Creating STM32 Assembly Language Project Based on Keil5 On this basis, continue to learn the mixed programming of C and assembly language for STM32 under Keil5. Contents of this article: 1. Refer to the attachments to complete the C language call assembly function; 2. Modifying the code requires changing the type of Init_1 functio ...

1, Create project 1. Create new projects 2. Select STM32F103C8 3. Check device startup, otherwise an error may be reported Click Ok. 2, Programming Right click Source Group1 and add the main.c and func.s files. The code is as follows: main.c # include<stdio.h> extern void Init_1(void); int main(){ Init_1(); return ...

catalog: 1, What is a timer matrix 2, Timer matrix principle 3, Timer matrix code implementation 4, Timer matrix verification 1, What is a timer matrix In product development, we often encounter some different timing requirements, such as key shaking elimination, LED flashing once per second and several times every few second ...

1. Write in front spi (Serial Peripheral Interface) is the Serial Peripheral Interface. Like i2c, spi also uses the bus for peripheral device communication, which is essential for embedded development. According to my previous experience, I summarize spi (mainly in the field of MCU, and Linux has mature driver equipment). The main purposes an ...