CONFIG_SOC_ATMEL_SAM4S_EXT_SLCK
Atmel SAM4S to use external crystal oscillator for slow clock
Atmel SAM4S to use external crystal oscillator for slow clock
Type: bool
Help
Says y if you want to use external 32 kHz crystal
oscillator to drive the slow clock. Note that this
adds a few seconds to boot time, as the crystal
needs to stabilize after power-up.
Says n if you do not need accurate and precise timers.
The slow clock will be driven by the internal fast
RC oscillator running at 32 kHz.
Help
Says y if you want to use external 32 kHz crystal
oscillator to drive the slow clock. Note that this
adds a few seconds to boot time, as the crystal
needs to stabilize after power-up.
Says n if you do not need accurate and precise timers.
The slow clock will be driven by the internal fast
RC oscillator running at 32 kHz.
Direct dependencies
(SOC_SERIES_SAM4S
&& SOC_FAMILY_SAM
) || (SOC_SERIES_SAM4S
&& SOC_FAMILY_SAM
)
(Includes any dependencies from ifs and menus.)
Defaults
No defaults. Implicitly defaults to n
.
Kconfig definitions
At <Zephyr>/soc/arm/atmel_sam/sam4s/Kconfig.soc:48
Included via <Zephyr>/Kconfig:8
→ <Zephyr>/Kconfig.zephyr:38
→ <Zephyr>/soc/Kconfig:15
→ <nRF>/doc/_build/kconfig/Kconfig.soc.arch:2
→ <Zephyr>/soc/arm/atmel_sam/Kconfig:17
Menu path: (Top) → Hardware Configuration
config SOC_ATMEL_SAM4S_EXT_SLCK
bool "Atmel SAM4S to use external crystal oscillator for slow clock"
depends on SOC_SERIES_SAM4S && SOC_FAMILY_SAM
help
Says y if you want to use external 32 kHz crystal
oscillator to drive the slow clock. Note that this
adds a few seconds to boot time, as the crystal
needs to stabilize after power-up.
Says n if you do not need accurate and precise timers.
The slow clock will be driven by the internal fast
RC oscillator running at 32 kHz.
At <Zephyr>/soc/arm/atmel_sam/sam4s/Kconfig.soc:48
Included via <Zephyr>/Kconfig:8
→ <Zephyr>/Kconfig.zephyr:38
→ <Zephyr>/soc/Kconfig:18
→ <Zephyr>/soc/arm/atmel_sam/Kconfig:17
Menu path: (Top) → Hardware Configuration
config SOC_ATMEL_SAM4S_EXT_SLCK
bool "Atmel SAM4S to use external crystal oscillator for slow clock"
depends on SOC_SERIES_SAM4S && SOC_FAMILY_SAM
help
Says y if you want to use external 32 kHz crystal
oscillator to drive the slow clock. Note that this
adds a few seconds to boot time, as the crystal
needs to stabilize after power-up.
Says n if you do not need accurate and precise timers.
The slow clock will be driven by the internal fast
RC oscillator running at 32 kHz.
(The ‘depends on’ condition includes propagated dependencies from ifs and menus.)