Module esp32c3_hal::dma::gdma
source · Expand description
Direct Memory Access
Overview
The GDMA (General DMA) module is a part of the DMA (Direct Memory Access)
driver for ESP chips. Of the Espressif chip range, every chip except of
ESP32 and ESP32-S2 uses the GDMA type of direct memory access.
DMA is a hardware feature that allows data transfer between memory and
peripherals without involving the CPU, resulting in efficient data movement
and reduced CPU overhead. The GDMA module provides multiple DMA channels,
each capable of managing data transfer for various peripherals.
This module implements DMA channels, such as channel0, channel1 and so
on. Each channel struct implements the ChannelTypes trait, which provides
associated types for peripheral configuration.
GDMA peripheral can be initializes using the new function, which requires
a DMA peripheral instance and a clock control reference. ```no_run
let dma = Gdma::new(peripherals.DMA, &mut system.peripheral_clock_control);
<em>PS: Note that the number of DMA channels is chip-specific.</em>Structs
- GDMA Peripheral