Dot Product Operation and Multiply-Accumulate The dot product operation is a fundamental operation in DSP applications, commonly used in filter and transformation algorithms. The ARM Cortex-M4 provides efficient multiply-accumulate (MAC) instructions for rapid execution of dot product operations. Example Code int32_t dot_product(int32_t *a, int32_t *b, uint32_t length) { int32_t result = 0; for (uint32_t i … Read more
丨Product Introduction丨 Holtek has launched a new Arm® Cortex®-M4 32-bit USB OTG microcontrollerHT32F49041 designed for high-performance computing and USB application scenarios, utilizing the efficient Cortex®-M4 core. This core implements a complete set of DSP instructions and a Memory Protection Unit (MPU), enhancing numerical computation performance and application security. The microcontroller features multiple power-saving modes, making … Read more
丨Product Introduction丨 Holtek has launched a new Arm® Cortex®-M4 32-bit USB OTG microcontrollerHT32F49041 designed for high-performance computing and USB application scenarios, utilizing the efficient Cortex®-M4 core. This core implements a complete set of DSP instructions and a Memory Protection Unit (MPU), enhancing numerical computation performance and application security. The microcontroller features multiple power-saving modes, making … Read more
This is the 169th content shared by the platform. GPIO (General Purpose Input/Output) is a versatile interface used to connect microcontrollers, embedded systems, or other electronic devices to interact with the external world.GPIO is a highly flexible interface that can perform various functions such as digital input, digital output, analog input, and analog output. In … Read more
Through JTAG Debugging – Introduction to DAP, a DAP consists of a DP and an AP, where the AP serves as a window to access the resources behind it. In JTAG debugging, Halt and Step Execution actually control the resources of the CPU behind the AP.In STM32F4xx, the Cortex-M4 registers are controlled via AHB-AP, allowing … Read more
Note: 1. This speech recognition library can recognize 11 short phrases, and the content to be recognized can be changed at any time. 2. Since the library is written in pure C and has an IAR version, it should also be possible to port it to chips from other manufacturers. 3. The software includes an … Read more
Holtek has launched a new Arm® Cortex®-M4 32-bit USB OTG microcontroller HT32F49041, designed for high-performance computing and USB application scenarios. It features an efficient Cortex®-M4 core, providing a single-precision floating-point unit (FPU) that supports all Arm® single-precision data processing instructions and data types. This core implements a complete set of DSP instructions and a memory … Read more
1. Memory Mapping In the memory mapping diagram of the STM32F429 chip, it can be seen that the peripherals are allocated 512M of space; however, the actual peripherals do not utilize the entire 512M of memory. When operating peripherals, it is sufficient to manipulate their corresponding memory addresses. For more detailed peripheral memory addresses, refer … Read more
This article is selected from the Jishu column “Arm Selection” by author lvy, authorized to be transferred from the WeChat public account Arm Selection. This article will take you deeper into the understanding of the MCU boot process. I previously wrote an article analyzing the complete boot process of STM32, but I felt that some … Read more
● Interrupts Interrupts play a very important role in microcontrollers. The code executes from top to bottom by default, and when it encounters conditions or other statements, it jumps to specified locations. During the execution of code in a microcontroller, unexpected situations may arise that need to be handled, which will interrupt the current code. … Read more