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Add driver support for ADC1 of stm32 #13447

Merged
merged 5 commits into from
May 8, 2019
Merged

Add driver support for ADC1 of stm32 #13447

merged 5 commits into from
May 8, 2019

Commits on May 7, 2019

  1. dts: arm: stm32: add dts support for ADC1 of stm32 

    All series of stm32 have at least one ADC instance and this commit adds
one ADC node to the root dts file of each soc, and also adds fixing up
mappings to them.

Signed-off-by: Song Qiang <songqiang1304521@gmail.com>
    @cybertale @nashif
    cybertale authored and nashif committed May 7, 2019
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  2. drivers: pinmux: stm32: add pinmux support for ADC of stm32 

    This commit adds pinmux defines for all the external ADC lines
supported by stm32. All defines are named after the datasheet of the
corresponding product lines.

Signed-off-by: Song Qiang <songqiang1304521@gmail.com>
    @cybertale @nashif
    cybertale authored and nashif committed May 7, 2019
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  3. drivers: adc: add driver support for ADC1 of stm32 

    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>
    @cybertale @nashif
    cybertale authored and nashif committed May 7, 2019
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  4. test: driver: adc: add some nucleo boards support for adc test cases 

    Some configuration for the boards have to be added into test_adc.c file
so user can test driver with the test cases. Several nucleo boards are
added including F091RC/F103RB/F207ZG/F302R8/F401RE/F746ZG/L073RZ/L476RG.

And also ADC dts and pinmux configuration are added into boards own
pinmux.c and dts file.

Signed-off-by: Song Qiang <songqiang1304521@gmail.com>
    @cybertale @nashif
    cybertale authored and nashif committed May 7, 2019
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  5. doc: boards: arm: nucleo: add ADC support to the boards doc 

    The ADC driver in this PR has been tested working on these nucleo
boards, so ADC support is added to the boards doc.

Signed-off-by: Song Qiang <songqiang1304521@gmail.com>
    @cybertale @nashif
    cybertale authored and nashif committed May 7, 2019
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