Tagged: discovery

Library 45- Interface backup SRAM on STM32F4 7

Library 45- Interface backup SRAM on STM32F4

Almost all (with few exceptions) STM32F4xx MCUs have internal backup SRAM, which stores data, if power is available at least on Vbat rails. These MCUs have internal 4-kBytes of SRAM. Backup SRAM can be also used as EEPROM, if your Vbat supply is always active, so you can store data which will stay there also if you reset your device. You just have to make sure that you don’t shut down your power supply or re-write them during startup sequence of MCU. Difference...

STM32F4 identification example result 5

Library 44- STM32F4 unique ID and flash size

STM32F4xx devices have some parts in memory, which are read only and store some information about device. You can use them to protect your program if it is stolen from memory, or to tell programmer/debugger which device is connected with and detect flash size. This library covers 4 things you can read from device: Device signature Device signature is something that you probably want to know when you are working with some device. This feature returns you 16-bit length device...

Project 03- STM32F4xx PID controller 33

Project 03- STM32F4xx PID controller

CMSIS files from ARM provides ARM Math functions. There are also PID controller functions in different formats for f32, q31 and q7. This tutorial/project will talk about how to implement PID controller on STM32F4xx using PID functions from ARM. PID Controller Fast about PID controller. PID stands for Proportional-Integral-Derivative controller. This is a control loop feedback mechanism widely used in industrial control systems. It calculates the error between measured value and the desired setpoint value. According to the error, it...

MPU-6050 6-axes gyroscope and accelerometer 113

Library 43- MPU-6050 6-axes gyro and accelerometer for STM32F4

MPU-6050 is a 3-axes accelerometer and 3-axes gyroscope MEMS sensor in one piece. It can also measure temperature. It is very cheap device but also very powerful. It can measure simultaneously three (X, Y and Z) channels for accelerometer and gyroscope at the same time with 16-bit resolution. This chip is also compatible with MPU9150, except that MPU9150 has 3axes magnetometer (or compass) included. MPU-6050 Features Accelerometer 4 selectable full scales (2G, 4G, 8G and 16G) Gyroscope 4 selectable full scales...

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...

USB Flash drive on STM32F4 109

Library 29- USB MSC HOST for USB flash drive on STM32F4

Recently I made a library to read SD cards with FatFs by Chan. Today, I made a new library for USB MSC Host and connect both libraries together, so you can operate with USB flash drives and SD cards simultaneously with STM32F4xx device. USB MSC Host library is a separate library, to handle and do stuff with USB stack. You will also need my FatFS library for SD cards. I will go here step by step, how to configure this...