Tagged: usart

All STM32F4 tutorials 54

All STM32F4 tutorials

Sometime I made a tutorial how to work with something on STM32F4xx device, because is hard and pointless to make library for it for any reason. Tutorials are set to work at least with STM32F4xx devices. Tutorials NR Name Description 1 FIRST TIME First time with STM32F429 Discovery. Coocox project tutorial 2 KEIL UVISION Default project for Keil uVision to work with STM32F4 devices 3 PWM PWM tutorial for STM32F4xx 4 NVIC Nested vector interrupt controller tutorial 5 EXTI External...

NRF24L01+ 2.4GHz RF Module 229

Library 17- nRF24L01+ for STM32F4

17th library is here. I will show how to basic communicate with 2 nRF24L01+ RF transceivers. The Nordic nRF24L01+ is a highly integrated, ultra low power (ULP) 2Mbps RF transceiver IC for the 2.4GHz ISM (Industrial, Scientific and Medical) band. With peak RX/TX currents lower than 14mA, a sub ╬╝A power down mode, advanced power management, and a 1.9 to 3.6V supply range, the nRF24L01+ provides a true ULP solution enabling months to years of battery life from coin cell...

All STM32F4 libraries 128

All STM32F4 libraries

Because there is a lot of libraries I have done, I will make a table with all of my libraries at one place. When new library will be created, it will be posted here. These libraries work on both Discovery boards, if not, it will be specified. Actually, libraries should work on STM32F4xx series of microcontrollers if they have peripherals that are need for library. All STM32F4xx MCUs don’t have everything inside. ­čÖé Libraries are tested on my 4 STM32F4...

STM32F4 NVIC or Nested Vector Interrupt Controller 37

STM32F4 NVIC or Nested Vector Interrupt Controller

Interrupts are important in microcontrollers. WIth them you are able to stop executing main program and jump to some predefined area if there is something important. I already used interrupts in my USART library. There is an interrupt called each time data arrive to MCU. Defferent peripheral can trigger interrupt, like data come to USART, ADC finished conversion, timer overflow, and more more. NVIC NVIC or Nested Vector Interrupt Controller is used to dinamically tell which interrupt is more important and...

Library 13- Reading temperature with Dallas DS18B20 on STM32F4 69

Library 13- Reading temperature with Dallas DS18B20 on STM32F4

In the last post, I show OneWire library. Today, I will use that library to show how to read temperature with Dallas’s temperature sensor DS18B20. DS18B20 Features 9 to 12 bits resolution -55┬░C to 125┬░C Celsius 64bit unique ROM number Alarm temperatures enable or disable Search devices with alarm flag set Can be parasite-powered Library Features Search sensors Read temperature Set resolution for each device Start temperature conversion on all devices simultaneously Set alarm low and high temperatures Disable alarm...