This patch starts to implement the ability to build Meadow.OS for the Meadow F7 board with the NuttX mainline. It will be followed by more patches, progressively enabling full Meadow.OS functionality. This configuration is a work in progress.
The Meadow.OS source code is needed to build this configuration. Meadow.OS is being open-sourced under the Apache 2.0 license. A prototype of the source code release and integration with NuttX is at https://github.com/WildernessLabs/Meadow.OS/tree/prototype
This is the second revision of this patch, as the first one (https://github.com/apache/nuttx/pull/9997) was causing build issues on NuttX CI and was reverted.
This should only impact the Meadow F7 board configurations.
No testing to be done, as the configuration is under development.
Move SCU-specific ak09912 sensor into spresense board layer.
Rename a function name to register SCU sensor driver
from ak09912_register to ak09912_scu_register.
Summary:
- I noticed that device discovery for virtio-mmio devices does not
work without bus=virtio-mmio-bus.x option. Without this option,
qemu assigns the virtio device into the virtio-mmio space
in reverse order automatically.
- To fix this issue, we must specify the correct numbers for the
target machines. (i.e. arm32/64->32, rv32/64->8)
Impact:
- None
Testing:
- Tested with qemu-7.2.4
Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>
Supported external SDRAM (MT48LC4M32B2B5-6AIT:L) on STM32H745I-DISCO dev board.
Though MT48LC4M32B2B5-6AIT:L SDRAM itself provides 32-bit data bus, STM32H745I-DISCO board
routes only DQ[15:0] bits. Thus only half of the memory can be accessed: the accessible memory
configuration is only 1 Meg x 16 x 4 banks instead of 1 Meg x 32 x 4 banks.
Thus the accessible memory size is 8 MBytes.
Testing:
nsh> ramtest -a 0xD0000000 -s 8388608
RAMTest: Marching ones: d0000000 8388608
RAMTest: Marching zeroes: d0000000 8388608
RAMTest: Pattern test: d0000000 8388608 55555555 aaaaaaaa
RAMTest: Pattern test: d0000000 8388608 66666666 99999999
RAMTest: Pattern test: d0000000 8388608 33333333 cccccccc
RAMTest: Address-in-address test: d0000000 8388608
nsh>
