Hello friends,
can someone to help me with configuration of DMA and I2C?
I would like to send the data from blue pill (STM32F103) to the external DAC with I2C interface. I am trying to generate sine wave. Data of one sine period are stored in the array - 512 values. I would like to use it as a circular buffer.
I cannot find any I2C-DMA example. Here I found SPI-DMA example. So I will try to adapt it for I2C.
And here are my questions:
1) Is this possible? I don't know if actual implementation (STM32 Core 1.8.0) is allowing this...
If yes, then next questions.
2) Which libraries/functions need I use for I2C? (seems Wire is not usable. Some low level functions?)
3) Which DMA channel can I use with I2C?
4) Can I use PROGMEM as a data buffer for DMA?
Thanks for any help.
How to send data via I2C using DMA
Post here first, or if you can't find a relevant section!
Return to “General discussion”
Jump to
- Announcements
- New users start here
- ↳ Forum rules, FAQs and HowTo's
- ↳ Let us know a bit about you and your projects
- Arduino for STM32
- ↳ General discussion
- ↳ Ideas & suggestions
- ↳ Cores
- ↳ STM32 Core
- ↳ Builds and Announcements
- ↳ Code snippets
- ↳ Ideas & suggestions
- ↳ General discussion
- ↳ Installation and OS related
- ↳ Libraries & Hardware
- ↳ PR's bugs and enhancements
- ↳ LibMaple
- ↳ Builds and Announcements
- ↳ Code snippets
- ↳ General discussion
- ↳ Ideas & suggestions
- ↳ Installation and OS related
- ↳ Libraries & Hardware
- ↳ PR's bugs and enhancements
- ↳ Steve's LibMaple core
- ↳ General discussion
- ↳ PR's bugs and enhancements
- ↳ Projects
- ↳ IDE's
- ↳ Off topic
- Arduino for STM8
- ↳ General discussion
- ↳ Cores
- ↳ STM8 Core
- ↳ Other
- Boards
- ↳ Custom design boards
- ↳ Maple & Maple mini etc
- ↳ STM boards (Discovery, Eval, Nucleo, ...)
- ↳ All other boards
- ↳ STM32F0 based boards
- ↳ STM32F1 based boards
- ↳ STM32F2 based boards
- ↳ STM32F3 based boards
- ↳ STM32F4 based boards
- ↳ STM32F7 based boards
- ↳ STM32G0 based boards
- ↳ STM32G4 based boards
- ↳ STM32H7 based boards
- ↳ STM32L0 based boards
- ↳ STM32L1 based boards
- ↳ STM32L4 based boards
- ↳ STM32L5 based boards
- ↳ STM32MP1 based boards
- ↳ STM32WB based boards
- Bootloaders
- ↳ STM32 HID bootloader
- ↳ USB bootloader
- ↳ STM32 SD-Bootloader
- ↳ STM32 USB CDC bootloader
- Uploaders and debuggers
- ↳ STLink
- ↳ USB to Serial adaptors
- ↳ Black Magic Probe & other
- Dead Thread Graveyard
- ↳ Dead Thread Graveyard