Tagged: gpio

HAL library 05- OneWire for STM32Fxxx 12

HAL library 05- OneWire for STM32Fxxx

Next port from STM32F4xx STD drivers to STM32Fxxx HAL drivers was done for OneWire library. This library is protocol based only. It features basic functions for read/write byte, reset port and search devices on OneWire port. 1-Wire is a device communications bus system designed by Dallas Semiconductor Corp. that provides low-speed data, signaling, and power over a single signal. It’s used in some temperature sensors, like DS18B20 temp sensor and many others products from Dallas. Library Read more about new HAL libraries Features...

All STM32 HAL libraries 101

All STM32 HAL libraries

In this section, I will write all libraries based on HAL drivers from ST. If you see this first time, make sure you read this post first about how structure of my libs looks like! License All my softwares are published under MIT license. This means that you are allow to modify, share and use my source and other stuff in personal or commercial use. If you modify source code, it has to stay under GNU GPL v3 license too. I...

Library 53- GPIO for STM32F4 14

Library 53- GPIO for STM32F4

GPIO is main thing when connecting your device with external things. As you know, ST started with HAL drivers and they want to remove STD periph drivers on which I’m working on this site. So this is a next step, how to be independent of things you use. GPIO is used everywhere on my libs, and most problems will be with porting GPIO stuff to new system (when it will be need for that). I will start to migrate all...

STemWin on STM32F429-Discovery board 77

Library 50- STemWin for STM32F429-Discovery

ST provides emWin library from Segger. It is professional GUI (Graphical User Interface), optimized for speed and performance for microcontrollers. ST has it’s own implementation, called STemWin. With this GUI, you can do many thing, of use simple buttons, dialogs, text boxes, to playing videos, displaying pictures, menus, etc. I suggest you that you go to segger’s website and read more about this very useful tool. In my library, I’ve some changes from original ST’s example for STM32F429-Discovery board, because...

All STM32F4 libraries 123

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. 🙂 Libraries are tested on my 4 STM32F4...

Library 14- Working with SDRAM on STM32F429 Discovery 52

Library 14- Working with SDRAM on STM32F429 Discovery

STM32F429 Discovery board has external 64Mbits or 8MBytes SDRAM chip ISSI IS42S16400. STM32F429 has a FMC (Flexible Memory Control) peripheral to driving external SDRAM with hardware. FMC hardware is able to store up to 32bits variables at same time. External SDRAM capatibilities Variable size Max value Max address Max variables stored 8bit 0xFF 0x7FFFFF 8388608 16bit 0xFFFF 0x7FFFFE 4194304 32bit 0xFFFFFFFF 0x7FFFFC 2097152 Note: This library does not work on STM32F4 Discovery, because this MCU does not have FMC peripheral....