Several STM32 variants include both shared IRQs for some ADCs and
separate IRQs for others (for example, STM32G473 has 5 ADCs, ADC1 and
ADC2 share one IRQ while ADC3, ADC4 and ADC5 each have unique
IRQs). The STM32 ADC driver however previously only supported either
separate IRQ lines for each operational ADC in the devicetree or a
single shared IRQ for all operational ADCs in the devicetree which
prevented all ADCs from being usable at the same time when the variant
contained a mix of both shared and separate ADC IRQ lines (only either
all the shared or all the separate and one of the shared might be used
at most for one application).
To allow for all ADCs in an STM32 variant to be usable in a single
application, generate an ISR and initialization function for each
unique IRQn as defined in the devicetree and give the task of
initialization to the first ADC which connects to that particular
IRQ. Each ISR function will generate code to call the ISR for each ADC
associated with that IRQn as was previously done for
CONFIG_ADC_STM32_SHARED_IRQS, allowing an ISR to be shared for the
ADCs sharing an IRQ while simultaneously providing separate ISRs for
each IRQ. Thus, the only information required to have ADCs either
share an ISR or not is provided by the devicetree.
Signed-off-by: Michael R Rosen <mrrosen@alumni.cmu.edu>
The adc1 & 2 of the stm32g4 devices share the same irq
Signed-off-by: Francois Ramu <francois.ramu@st.com>
Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
Update adc drivers to use DT_HAS_<compat>_ENABLED Kconfig symbol
to expose the driver and enable it by default based on devicetree.
We remove 'depend on' Kconfig for symbols that would be implied by
the devicetree node existing.
Signed-off-by: Kumar Gala <galak@kernel.org>
Certain stm32 soc's have a single shared irq for all adc channels
on those soc's only a single channel is supported.
Added a Kconfig that enables a shared irq for stm32f2x, stm32f4x,
stm32f7x soc's. The shared IRQ uses a flag to limit the number of
interrupts defined to only 1. A shared irq handler is added which
determines which ADC instance the interrupt is for, it then calls
into the existing interrupt.
Signed-off-by: Marius Scholtz <mariuss@ricelectronics.com>
ADC_1 peripheral instance was enabled by default in driver.
This is not the usual way to enable peripheral instances, as it
makes board configuration unclear.
Move activation in boards that are declaring ADC support.
Signed-off-by: Erwan Gouriou <erwan.gouriou@linaro.org>
Use this short header style in all Kconfig files:
# <description>
# <copyright>
# <license>
...
Also change all <description>s from
# Kconfig[.extension] - Foo-related options
to just
# Foo-related options
It's clear enough that it's about Kconfig.
The <description> cleanup was done with this command, along with some
manual cleanup (big letter at the start, etc.)
git ls-files '*Kconfig*' | \
xargs sed -i -E '1 s/#\s*Kconfig[\w.-]*\s*-\s*/# /'
Signed-off-by: Ulf Magnusson <Ulf.Magnusson@nordicsemi.no>
Same deal as in commit 7fdb525754 ("kconfig: Use 'default' instead of
'def_bool' in Kconfig.defconfig files"), but I hacked Kconfiglib to also
find cases where the type is given separately as e.g.
config FOO
int
default 3
Motivation (from a note in
https://docs.zephyrproject.org/latest/guides/kconfig/index.html):
For a symbol defined in multiple locations (e.g., in a
Kconfig.defconfig file in Zephyr), it is best to only give the
symbol type for the "base" definition of the symbol, and to use
'default' (instead of 'def_<type>' value) for the remaining
definitions. That way, if the base definition of the symbol is
removed, the symbol ends up without a type, which generates a
warning that points to the other definitions. That makes the extra
definitions easier to discover and remove.
It's also nice if 'def_bool' and the like turn into a semi-reliable flag
that the symbol is only defined in Kconfig.defconfig files. That might
be a sign that things could be cleaned up.
Will do a separate pass later to remove some symbols only defined in
Kconfig.defconfig files.
Signed-off-by: Ulf Magnusson <Ulf.Magnusson@nordicsemi.no>
This commit adds driver support for ADC1 on all 8 supported series of
stm32 with resolution and conversion time selection and calibration.
Currently DMA is not supported for all series, and without it, zephyr
won't be able to catch up ADC's end of conversion interrupt, so this
version of the driver supports one channel conversion only. Users want
multi-channel conversion should use multiple sequences in their app
code.
This driver uses LL lib rather than HAL because the current HAL lib for
ADC will call HAL_DMA_* functions rather than using zephyr's common DMA
interface, so that way the driver will break the consistency of the
code.
This driver has been tested on multiple nucleo boards including
NUCLEO_F091RC/F103RB/F207ZG/F302R8/F401RE/F746ZG/L073RZ/L476RG and all
passed the test cases in tests/drivers/adc/adc_api. If the external ADC
line is floating, it may fail the tests since ADC may get 0V and the
test cases think 0 is failing. Connect it to any voltage source between
0-3.3V will help passing the test cases.
Signed-off-by: Song Qiang <songqiang1304521@gmail.com>
