This commit adds support for the HX711 ADC in the STM32F401RC-RS485
board and updates the board documentation accordingly.
Signed-off-by: Rodrigo Sim <rcsim10@gmail.com>
AVR uses Hardward architecture with separate address space for program
memory (flash) and data memory (RAM). Normal program flow can only
access data memory which means that all variables - including const
variables - have to be copied into RAM to be accessible. (This happens
automatically during startup.)
It is possible to work around this limitation in software but that
can have severe impact on performance and/or API complexity. It is hardly
feasible to change NuttX interfaces in a way that would allow to make use
of this workaround.
On newer AVR families, there is an alternative option enabled by this patch.
These chips map part of their program memory (a 32kB window) into data
memory address space. This patch leverages this feature and adds support
for placing const variables into the mapped window. No copy to RAM is done
for them.
Const variables are therefore loaded directly from flash (not consuming
RAM) while still being available to be used by any NuttX interface.
Linker script of breadxavr board is changed to make use of these changes.
Tested by verifying string addresses - parameters in printf call
in a custom application (and also by running the application and verifying
its output.)
Documentation tested by build.
Signed-off-by: Kerogit <kr.git@kerogit.eu>
This patch adds a document that describes why const variables need to be
copied into the RAM in AVR architecture for normal program flow in NuttX.
It then describes options of accessing them directly from the flash without
need to do any copying.
Patch was tested by building the documentation.
Signed-off-by: Kerogit <kr.git@kerogit.eu>
Added logic to set hasdma to false. This is needed to enable or not enable interrupts on a per ADC basis. Made other minor formatting changes.
Fixed build issues with non ADC/DMA configurations.
This commit removes the termios dependency of the command to set fix
rate. It makes the MINMEA dependency present in the Kconfig options for
the driver, and it also adds a retry limit to the boot message
verification of 3 times. The documentation has been updated to reflect
the correct signature for the registration function and fix some
formatting.
Signed-off-by: Matteo Golin <matteo.golin@gmail.com>
When using the ILI9342C LCD on the esp32s3-box-3 development board, the
displayed colors are inverted.
add content
Manually converts the byte order of color data from little-endian
to big-endian before transmission.
The current setlogmask call used in coredump_dump_syslog specifies a raw log level
instead of a bitmask, and this causes wrong evaluations later on when that value
is checked against a mask. Therefore the LOG_UPTO macro is added for conversion.
Signed-off-by: Niccolò Maggioni <nicco.maggioni+nuttx@gmail.com>
If atomic_try_cmpxchg_xxxx runs on LL/SC architectures (e.g.ARMv7,
ARMv8, RISC-V), the weak CAS expands to a single LDREX/STREX pair.
If the CPU takes an IRQ/FIQ/SVC between the two instructions,
hardware performs an implicit CLREX and the following STREX returns
1, therefore atomic_try_cmpxchg_xxxx return failure even though
*addr* still holds the expected value.
So let's retry atomic_try_cmpxchg_xxxx in this case.
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
Replaces CONFIG_I2C_DRIVER with CONFIG_I2C for proper build requirements.
Same for SPI. Also changes some logging to syslog.
Signed-off-by: Filipe Cavalcanti <filipe.cavalcanti@espressif.com>
These sections can be emited by gcc in some cases for huge data blocks.
For example huge global static uninitialzied arrays can be placed in .lbss section
which can mess NuttX memory organization and cause hard to find bugs.
Unfortunately this is not well documented in GCC and all we have is this bug report:
https://sourceware.org/bugzilla/show_bug.cgi?id=22553
Signed-off-by: p-szafonimateusz <p-szafonimateusz@xiaomi.com>
This commit adds SD card support to the WeAct STM32H743 board configuration.
The implementation enables the board to interface with SD cards through the
SDMMC peripheral, allowing file system operations and data storage capabilities.
Signed-off-by: Jorge Guzman <jorge.gzm@gmail.com>
1. Rotate the video screen 90 degrees right.
2. Enable touchscreen for the LVGL configuration "lckfb-szpi-esp32s3:lvgl" and add lvgldemo autostart.
Signed-off-by: wangjianyu3 <wangjianyu3@xiaomi.com>
Add touchscreen swap configuration for boards and enable it for defconfig that enables `FT5X06_SWAPXY`.
Refresh configurations to delete the deprecated `FT5X06_NPOLLWAITERS` and `FT5X06_SWAPXY`.
Signed-off-by: wangjianyu3 <wangjianyu3@xiaomi.com>
Add support for mirror/swap coordinates.
There are some touchscreen drivers not support mirror or swap coordinates.
For example, drivers/input/ft5x06 does not support mirror.
Signed-off-by: wangjianyu3 <wangjianyu3@xiaomi.com>
