Search found 81 matches

by Administrator
25-Jul-2023, 20:03
Forum: Hardware, DIY (Do-It-Yourself)
Topic: 20Pin=>10Pin JTAG Adapter Board Kit
Replies: 0
Views: 9745

20Pin=>10Pin JTAG Adapter Board Kit

20Pin => 10Pin JTAG Adapter Board Kit This adapter is for the standard 10pin 0.05"(1.27mm) pitch ARM Cortex JTAG connector to the legacy 20pin 0.1"(2.54mm) pitch ARM JTAG connector. The JTAG adapter board kit is a useful accessory for connecting your JTAG/SWD adapter to older ARM evaluation/develop...
by Administrator
13-Jul-2023, 22:44
Forum: Hardware, DIY (Do-It-Yourself)
Topic: STM32 MPU configuration tips
Replies: 2
Views: 6139

Re: STM32 MPU configuration tips

Example for UART DMA TX & RX. uint8_t tx_buffer[512] @ 0x20020000; uint8_t rx_buffer[512] @ 0x20020200; MPU_InitStruct.Enable = MPU_REGION_ENABLE; MPU_InitStruct.Number = MPU_REGION_NUMBER1; MPU_InitStruct.BaseAddress = 0x20020000; MPU_InitStruct.Size = MPU_REGION_SIZE_1KB; MPU_InitStruct.SubRegion...
by Administrator
11-Jul-2023, 22:16
Forum: Hardware, DIY (Do-It-Yourself)
Topic: STM32 MPU configuration tips
Replies: 2
Views: 6139

Re: STM32 MPU configuration tips

MPU subregions security for STM32 https://stackoverflow.com/questions/73402590/mpu-subregions-security-for-stm32h7 Regions of 256 bytes or more are divided into 8 equal-sized subregions. Setting corresponding subregion bit excludes subregion from MPU region. The subregion option is activated which ...
by Administrator
11-Jul-2023, 22:08
Forum: Hardware, DIY (Do-It-Yourself)
Topic: STM32 MPU configuration tips
Replies: 2
Views: 6139

STM32 MPU configuration tips

Introduction to the Cortex-M7 MPU and AN4838 (Introduction to memory protection unit management on STM32 MCUs) says: The MPU is an optional component for the memory protection. Including the MPU in the STM32 microcontrollers (MCUs) makes them more robust and reliable. If the MPU is not enabled, the...
by Administrator
04-Jul-2023, 17:24
Forum: Hardware, DIY (Do-It-Yourself)
Topic: Convert binary files to C arrays.
Replies: 0
Views: 7045

Convert binary files to C arrays.

1. fcarm.exe is a command-line utility from Keil uVision Location: C:\Program Files (x86)\Keil5\ARM\BIN\FCARM.exe Note: FCARM integrates a file optimization algorithm to compress files and creates more compact and smaller executable images. FCARM decides on the file extension which kind of compressi...
by Administrator
04-Jul-2023, 16:51
Forum: Hardware, DIY (Do-It-Yourself)
Topic: Fast SQRT function for integers
Replies: 1
Views: 4882

Re: Fast SQRT function for integers

Fast SQRT for numbers with floating point (based on Quake code): #include <stdint.h> float Q_rsqrt( float number ) { const float x2 = number * 0.5F; const float threehalfs = 1.5F; union { float f; uint32_t i; } conv = {number}; // member 'f' set to value of 'number'. conv.i = 0x5f3759df - ( conv.i >...
by Administrator
04-Jul-2023, 16:36
Forum: Hardware, DIY (Do-It-Yourself)
Topic: Fast SQRT function for integers
Replies: 1
Views: 4882

Fast SQRT function for integers

This is simple and fast SQRT algorithm for integers in range (0..500000): int sqrt_int(int x) { unsigned int ret = 44; // starting point is relatively unimportant for (int i = 0; i < 6; i++) { ret = (ret + x / ret) / 2; } // almost exact for x ~ 1 .. 500000 return ret; }
by Administrator
26-Feb-2023, 19:51
Forum: Windows, .Net, OpenGL
Topic: [Fixed] Windows 10 Taskbar does not work.
Replies: 0
Views: 8167

[Fixed] Windows 10 Taskbar does not work.

Taskbar icons not responding to left mouse click on Windows 10 Также горит надпись по центру экрана: "Hold escape key to prevent StartisBack from loading". После установки "обновление функций до Windows 10, версия 21H1 за май 2021" появилась проблема, когда сворачиваешь любое приложение, например, ...
by Administrator
05-Feb-2023, 14:43
Forum: Health, Medicine, Therapy
Topic: Avidity granted FDA fast track designation for AOC 1020
Replies: 0
Views: 8832

Avidity granted FDA fast track designation for AOC 1020

The Food and Drug Administration (FDA) has granted Fast Track designation to AOC 1020 for the treatment of facioscapulohumeral muscular dystrophy. AOC - Antibody Oligonucleotide Conjugate. AOC 1020 is designed to reduce the expression of DUX4 mRNA and DUX4 protein in muscles. The investigational tre...