arch/arm/src/imxrt: May eDMA channel linking a configuration option. Add support to select the DMA channel priority and pre-emption controls.
arch/arm/src/imxrt: Update some HowTo comments in the eDMA header file.
arch/arm/src/imxrt: Fix a logic error in parmater passing. Caller does not know actual channel number when setting up linked channel, only the channel handler.
arch/arm/src/imxrt: Fixes for clean eDMA driver build with Scatter/Gather enabled.
arch/arm/src/imxrt: Fixes for clean eDMA driver build with Scatter/Gather disabled.
arch/arm/src/imxrt: Add flags to DMA configuration to control transfer setup. Remove some user interfaces that are inconsistent with modular design.
arch/arm/src/imxrt: Update DMA channel interrupt handler.
arch/arm/src/imxrt: Add implementation of eDMA imxrt_dmach_start().
arch/arm/src/imxrt: Add implementation of eDMA imxrt_dmach_setup().
arch/arm/src/imxrt: Add eDMA imxrt_tcd_chanlink().
arch/arm/src/imxrt: Add eDMA imxrt_dmach_getcount; free allocated TCDs automatically when the DMA completes or is aborted.
arch/arm/src/imxrt: Add structures to support list of TCDs for Scatter/Gather DMA.
arch/arm/src/imxrt: Add eDMA imxrt_dmach_initconfig().
arch/arm/src/imxrt: Add eDMA imxrt_tcd_instantiate().
arch/arm/src/imxrt: Replacing some of the logic cloned from SAMv7 XDMAC with eDMA logic from NXP sample code. I am thinking that the eDMA is too complex to force into the same pattern as for other MCUs.
arch/arms/src/imxrt/imxrt_edma.c: Add support for in-memory TCDs.
arch/arm/src/imxrt/chip: Add an in-memory representation of the TCD in imxrt_edma.h
configs/stm32f4discovery/include/board.h: Add SPI DMA pins definitions to get CS43L22 audio DAC working
configs/stm32f4discovery/audio: Add board configuration for CS43L22 audio example
configs/stm32f4discovery: Update README
As with the MCU temperature and VREFINT measurement, this patch requires user to enable the corresponding channel first. For Vbat channel the ioctl cmd is IO_ENABLE_DISABLE_VBAT_CH, and its arg should be a pointer to bool which must be true to enable and false to disable the Vbat channel.
Moreover, since Vbat input contains a built-in voltage divider, it is highly suggested to disable Vbat input channel after measurement is done in order to prevent battery drain through the divider.
commit 7fd1f0d78546fa0315f4077b779efdd884e5bd53
Author: William Douglas <william@rocklandscientific.com>
Date: Tue May 15 13:19:31 2018 -0700
Add support for the second SDMMC device.
The second SDMMC device was already supported but
the clock was never enabled. This fixes that.
configs/freedom-k28f: Add button and LED support.
arch/arm/src/kinetis: Fix a couple of additional compile problems.
arch/arm/src/kinetis/chip and configs/freedom-k28f: Add things needed for a successful build. Still need board LED definitions.
