MakBit Software

Lesson #1. This guide briefly describes how to get started programming SMT32F3 board using IAR Embedded Workbench. First tutorial shows how to create a simple blinking LEDs firmware for this board. #include <stm32f30x.h> #include <stm32f30x_rcc.h> #include <stm32f30x_gpio.h> int main() {     GPIO_In...

Hello. First of all you should download installation package for: "IAR Embedded Workbench for ARM" at http://www.iar.com/Service-Center/Downloads/ (size-limited evaluation license) When the installation is complete you need to register online (you can use any name and country, but you need valid e-m...

We need internet connection and terminal window (or PuTTY). Use Win32DiskImager to make backup-file of your SD card. If your Raspberry PI uses small SD-card ( < 4GB) you can get the "out of free space" error. Try to delete temporary files and unused downloaded package files (.deb files) in "/var/cac...

Introduction Some time ago I faced with the task to dynamically load HTML-page and parse its content. I thought this "trivial problem" will take couple of hours. In fact it took a week to solve. Some solutions I have found are ugly or buggy, wrong or incomplete, some of which are from Microsoft tec...

Rendering an IHTMLElement to an Image File What This Article Is About This code can take a snapshot of a webpage and store it as an image for viewing later. I would like to extract a bitmap from an html page. I expected to find a IStream, IPersistStream or IPersistStreamInit from the IHTMLImgElemen...

Consideration to Bus Floating and Hot Insertion Any signals that can be floated should be pulled low or high properly via a resister. This is a generic design rule on MOS devices. Because DI and DO are normally high, they should be pulled-up. According to SDC/MMC specs, from 50k to 100k ohms is rec...

Data Transfer Data Packet and Data Response In a transaction with data transfer, one or more data blocks will be sent/received after command response. The data block is transferred as a data packet that consist of Token, Data Block and CRC. The format of the data packet is showin in right image and...

Initialization Procedure for SPI Mode After power on reset, MMC/SDC enters its native operating mode. To put it SPI mode, follwing procedure must be performed like this flow. sd_init_diagram.png Power ON (Insersion) After supply voltage reached 2.2 volts, wait for one millisecond at least. Set SPI ...

How to Use MMC/SDC The Secure Digital Memory Card (SDC below) is the standard memory card for mobile equipments. The SDC was developped as upper-compatible to Multi Media Card (MMC below). SDC compleant equipments can also use MMCs in most case. There are also reduced size versions, such as RS-MMC,...

Программный код Минимальный программный код для работы с SPI модулем состоит из двух функций: - функции инициализации. - функции передачи/приема байта данных Инициализация SPI модуля Инициализация включает в себя конфигурирование выводов SPI модуля и управляющего регистра SPCR. #define SPI_MISO 6 #...