drivers: counter: Counter API implementation for nRF Series (TIMER).
Shim for counter API using nrfx_timer driver. Signed-off-by: Krzysztof Chruściński <krzysztof.chruscinski@nordicsemi.no>
This commit is contained in:
Krzysztof Chruściński
Anas Nashif
parent
dedbecb046
commit
6b4ff1252a
9 changed files with 540 additions and 0 deletions
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@ -6,5 +6,6 @@ zephyr_library_sources_ifdef(CONFIG_COUNTER_TMR_CMSDK_APB counter_tmr_cmsdk_apb.
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zephyr_library_sources_ifdef(CONFIG_TIMER_TMR_CMSDK_APB timer_tmr_cmsdk_apb.c)
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zephyr_library_sources_ifdef(CONFIG_COUNTER_DTMR_CMSDK_APB counter_dtmr_cmsdk_apb.c)
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zephyr_library_sources_ifdef(CONFIG_TIMER_DTMR_CMSDK_APB timer_dtmr_cmsdk_apb.c)
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zephyr_library_sources_ifdef(CONFIG_COUNTER_NRF_TIMER counter_nrfx_timer.c)
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zephyr_library_sources_ifdef(CONFIG_USERSPACE counter_handlers.c)
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@ -13,10 +13,20 @@ menuconfig COUNTER
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if COUNTER
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config COUNTER_LOG_LEVEL
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int "Counter log level"
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default 0
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range 0 4
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help
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Counter logging level.
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source "drivers/counter/Kconfig.qmsi"
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source "drivers/counter/Kconfig.tmr_cmsdk_apb"
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source "drivers/counter/Kconfig.dtmr_cmsdk_apb"
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source "drivers/counter/Kconfig.nrfx"
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endif # COUNTER
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235
drivers/counter/Kconfig.nrfx
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235
drivers/counter/Kconfig.nrfx
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@ -0,0 +1,235 @@
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# Copyright (c) 2017 - 2018, Nordic Semiconductor ASA
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#
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# SPDX-License-Identifier: Apache-2.0
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#
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config COUNTER_NRF_TIMER
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bool
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select NRFX_TIMER
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config COUNTER_NRF_RTC
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bool
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select NRFX_RTC
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config COUNTER_TIMER0
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bool "Enable Counter on TIMER0"
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depends on HAS_HW_NRF_TIMER0
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depends on !BT_LL_SW
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select COUNTER_NRF_TIMER
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select NRFX_TIMER0
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if COUNTER_TIMER0
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config COUNTER_0_NAME
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string "Counter device name"
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default "Counter 0"
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help
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Specify the device name for Counter driver instance.
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config COUNTER_TIMER0_IRQ_PRI
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int "Counter interrupt priority"
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default 0
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config COUNTER_TIMER0_PRESCALER
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int "Timer prescaler"
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default 0
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range 0 9
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help
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Frequency = 16 Mhz / 2^prescaler.
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endif #COUNTER_TIMER0
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config COUNTER_TIMER1
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bool "Enable Counter on TIMER1"
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depends on HAS_HW_NRF_TIMER1
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select COUNTER_NRF_TIMER
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select NRFX_TIMER1
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if COUNTER_TIMER1
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config COUNTER_1_NAME
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string "Counter device name"
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default "Counter 1"
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help
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Specify the device name for Counter driver instance.
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config COUNTER_TIMER1_IRQ_PRI
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int "Counter interrupt priority"
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default 0
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config COUNTER_TIMER1_PRESCALER
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int "Timer prescaler"
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default 0
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range 0 9
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help
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Frequency = 16 Mhz / 2^prescaler.
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endif #COUNTER_TIMER1
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config COUNTER_TIMER2
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bool "Enable Counter on TIMER2"
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depends on HAS_HW_NRF_TIMER2
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select COUNTER_NRF_TIMER
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select NRFX_TIMER2
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if COUNTER_TIMER2
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config COUNTER_2_NAME
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string "Counter device name"
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default "Counter 2"
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help
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Specify the device name for Counter driver instance.
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config COUNTER_TIMER2_IRQ_PRI
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int "Counter interrupt priority"
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default 0
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config COUNTER_TIMER2_PRESCALER
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int "Timer prescaler"
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default 0
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range 0 9
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help
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Frequency = 16 Mhz / 2^prescaler.
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endif #COUNTER_TIMER2
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config COUNTER_TIMER3
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bool "Enable Counter on TIMER3"
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depends on HAS_HW_NRF_TIMER3
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select COUNTER_NRF_TIMER
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select NRFX_TIMER3
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if COUNTER_TIMER3
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config COUNTER_3_NAME
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string "Counter device name"
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default "Counter 3"
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help
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Specify the device name for Counter driver instance.
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config COUNTER_TIMER3_IRQ_PRI
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int "Counter interrupt priority"
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default 0
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config COUNTER_TIMER3_PRESCALER
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int "Timer prescaler"
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default 0
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range 0 9
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help
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Frequency = 16 Mhz / 2^prescaler.
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endif #COUNTER_TIMER3
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config COUNTER_TIMER4
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bool "Enable Counter on TIMER4"
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depends on HAS_HW_NRF_TIMER4
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select COUNTER_NRF_TIMER
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select NRFX_TIMER4
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if COUNTER_TIMER4
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config COUNTER_4_NAME
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string "Counter device name"
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default "Counter 4"
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help
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Specify the device name for Counter driver instance.
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config COUNTER_TIMER4_IRQ_PRI
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int "Counter interrupt priority"
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default 0
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config COUNTER_TIMER4_PRESCALER
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int "Timer prescaler"
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default 0
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range 0 9
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help
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Frequency = 16 Mhz / 2^prescaler.
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endif #COUNTER_TIMER4
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config COUNTER_RTC0
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bool "Enable Counter on RTC0"
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depends on HAS_HW_NRF_RTC0
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depends on !BT_LL_SW
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select COUNTER_NRF_RTC
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select NRFX_RTC0
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if COUNTER_RTC0
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config COUNTER_RTC0_NAME
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string "Counter device name"
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default "RTC Counter 0"
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help
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Specify the device name for Counter driver instance.
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config COUNTER_RTC0_IRQ_PRI
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int "Counter interrupt priority"
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default 0
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config COUNTER_RTC0_PRESCALER
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int "RTC prescaler"
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default 0
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range 0 2047
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help
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Frequency = 32768 / (prescaler+1).
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endif #COUNTER_RTC0
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config COUNTER_RTC1
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bool "Enable Counter on RTC1"
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depends on HAS_HW_NRF_RTC1
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select COUNTER_NRF_RTC
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select NRFX_RTC1
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if COUNTER_RTC1
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config COUNTER_RTC1_NAME
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string "Counter device name"
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default "RTC Counter 1"
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help
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Specify the device name for Counter driver instance.
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config COUNTER_RTC1_IRQ_PRI
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int "Counter interrupt priority"
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default 0
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config COUNTER_RTC1_PRESCALER
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int "RTC prescaler"
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default 0
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range 0 2047
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help
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Frequency = 32768 / (prescaler+1).
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endif #COUNTER_RTC1
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config COUNTER_RTC2
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bool "Enable Counter on RTC2"
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depends on HAS_HW_NRF_RTC2
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select COUNTER_NRF_RTC
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select NRFX_RTC2
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if COUNTER_RTC2
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config COUNTER_RTC2_NAME
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string "Counter device name"
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default "RTC Counter 2"
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help
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Specify the device name for Counter driver instance.
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config COUNTER_RTC2_IRQ_PRI
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int "Counter interrupt priority"
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default 0
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config COUNTER_RTC2_PRESCALER
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int "RTC prescaler"
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default 0
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range 0 2047
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help
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Frequency = 32768 / (prescaler+1).
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endif #COUNTER_RTC2
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@ -21,3 +21,5 @@ COUNTER_HANDLER(get_pending_int)
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COUNTER_HANDLER(read)
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COUNTER_HANDLER(stop)
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COUNTER_HANDLER(start)
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COUNTER_HANDLER(get_wrap)
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COUNTER_HANDLER(get_max_relative_alarm)
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278
drivers/counter/counter_nrfx_timer.c
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278
drivers/counter/counter_nrfx_timer.c
Normal file
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@ -0,0 +1,278 @@
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/*
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* Copyright (c) 2017 - 2018, Nordic Semiconductor ASA
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <counter.h>
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#include <nrfx_timer.h>
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#define LOG_LEVEL CONFIG_COUNTER_LOG_LEVEL
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#define LOG_MODULE_NAME counter_timer
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#include <logging/log.h>
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LOG_MODULE_REGISTER();
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#define TIMER_CLOCK 16000000
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#define CC_TO_ID(cc_num) (cc_num - 2)
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#define ID_TO_CC(idx) (nrf_timer_cc_channel_t)(idx + 2)
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#define COUNTER_EVENT_TO_ID(evt) \
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(evt - NRF_TIMER_EVENT_COMPARE2)/sizeof(u32_t)
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#define WRAP_CH NRF_TIMER_CC_CHANNEL0
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#define COUNTER_WRAP_INT NRF_TIMER_EVENT_COMPARE0
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#define COUNTER_OVERFLOW_SHORT NRF_TIMER_SHORT_COMPARE0_CLEAR_MASK
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#define COUNTER_READ_CC NRF_TIMER_CC_CHANNEL1
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struct counter_nrfx_data {
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counter_wrap_callback_t wrap_cb;
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void *wrap_user_data;
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};
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struct counter_nrfx_config {
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struct counter_config_info info;
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const struct counter_alarm_cfg **alarm_cfgs;
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nrfx_timer_t timer;
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LOG_INSTANCE_PTR_DECLARE(log);
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};
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static inline struct counter_nrfx_data *get_dev_data(struct device *dev)
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{
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return dev->driver_data;
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}
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static inline const struct counter_nrfx_config *get_nrfx_config(
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struct device *dev)
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{
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return CONTAINER_OF(dev->config->config_info,
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struct counter_nrfx_config, info);
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}
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static int counter_nrfx_start(struct device *dev)
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{
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nrfx_timer_enable(&get_nrfx_config(dev)->timer);
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return 0;
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}
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static int counter_nrfx_stop(struct device *dev)
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{
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nrfx_timer_disable(&get_nrfx_config(dev)->timer);
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return 0;
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}
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static u32_t counter_nrfx_read(struct device *dev)
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{
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return nrfx_timer_capture(&get_nrfx_config(dev)->timer,
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COUNTER_READ_CC);
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}
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static int counter_nrfx_set_alarm(struct device *dev,
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const struct counter_alarm_cfg *alarm_cfg)
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{
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const struct counter_nrfx_config *nrfx_config = get_nrfx_config(dev);
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const nrfx_timer_t *timer = &nrfx_config->timer;
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u32_t cc_val;
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if (alarm_cfg->ticks > nrfx_timer_capture_get(timer, WRAP_CH)) {
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return -EINVAL;
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}
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if (nrfx_config->alarm_cfgs[alarm_cfg->channel_id]) {
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return -EBUSY;
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}
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cc_val = alarm_cfg->ticks + (alarm_cfg->absolute ?
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0 : nrfx_timer_capture(timer, COUNTER_READ_CC));
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nrfx_config->alarm_cfgs[alarm_cfg->channel_id] = alarm_cfg;
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nrfx_timer_compare(timer, ID_TO_CC(alarm_cfg->channel_id),
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cc_val, true);
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return 0;
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}
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static void _disable(struct device *dev, u8_t id)
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{
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const struct counter_nrfx_config *config = get_nrfx_config(dev);
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nrfx_timer_compare_int_disable(&config->timer, ID_TO_CC(id));
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config->alarm_cfgs[id] = NULL;
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}
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static int counter_nrfx_disable_alarm(struct device *dev,
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const struct counter_alarm_cfg *alarm_cfg)
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{
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_disable(dev, alarm_cfg->channel_id);
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return 0;
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}
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static int counter_nrfx_set_wrap(struct device *dev, u32_t ticks,
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counter_wrap_callback_t callback,
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void *user_data)
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{
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const struct counter_nrfx_config *nrfx_config = get_nrfx_config(dev);
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const nrfx_timer_t *timer = &nrfx_config->timer;
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struct counter_nrfx_data *data = get_dev_data(dev);
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for (int i = 0; i < counter_get_num_of_channels(dev); i++) {
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/* Overflow can be changed only when all alarms are
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* disables.
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*/
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if (nrfx_config->alarm_cfgs[i]) {
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return -EBUSY;
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}
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}
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nrfx_timer_compare_int_disable(timer, WRAP_CH);
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nrfx_timer_clear(timer);
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data->wrap_cb = callback;
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data->wrap_user_data = user_data;
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nrfx_timer_extended_compare(timer, WRAP_CH,
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ticks, COUNTER_OVERFLOW_SHORT,
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callback ? true : false);
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return 0;
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}
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static u32_t counter_nrfx_get_pending_int(struct device *dev)
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{
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return 0;
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}
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static void alarm_event_handler(struct device *dev, u32_t id)
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{
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const nrfx_timer_t *timer = &get_nrfx_config(dev)->timer;
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const struct counter_alarm_cfg *alarm_cfg =
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get_nrfx_config(dev)->alarm_cfgs[id];
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u32_t cc_val;
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if (!alarm_cfg->handler) {
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return;
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}
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cc_val = nrfx_timer_capture_get(timer, ID_TO_CC(id));
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_disable(dev, id);
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alarm_cfg->handler(dev, alarm_cfg, cc_val);
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}
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static void event_handler(nrf_timer_event_t event_type, void *p_context)
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{
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struct device *dev = p_context;
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struct counter_nrfx_data *dev_data = get_dev_data(dev);
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if (event_type == COUNTER_WRAP_INT) {
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if (dev_data->wrap_cb) {
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dev_data->wrap_cb(dev, dev_data->wrap_user_data);
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}
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} else if (event_type > NRF_TIMER_EVENT_COMPARE1) {
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alarm_event_handler(dev, COUNTER_EVENT_TO_ID(event_type));
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}
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}
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static int init_timer(struct device *dev, const nrfx_timer_config_t *config)
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{
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const struct counter_nrfx_config *nrfx_config = get_nrfx_config(dev);
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const nrfx_timer_t *timer = &nrfx_config->timer;
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nrfx_err_t result = nrfx_timer_init(timer, config, event_handler);
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if (result != NRFX_SUCCESS) {
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LOG_INST_ERR(nrfx_config->log, "Failed to initialize device.");
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return -EBUSY;
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}
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nrfx_timer_compare(timer, WRAP_CH, UINT32_MAX, false);
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LOG_INST_DBG(nrfx_config->log, "Initialized");
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return 0;
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}
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static u32_t counter_nrfx_get_wrap(struct device *dev)
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{
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return nrfx_timer_capture_get(&get_nrfx_config(dev)->timer, WRAP_CH);
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}
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static u32_t counter_nrfx_get_max_relative_alarm(struct device *dev)
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{
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return nrfx_timer_capture_get(&get_nrfx_config(dev)->timer, WRAP_CH);
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}
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static const struct counter_driver_api counter_nrfx_driver_api = {
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.start = counter_nrfx_start,
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.stop = counter_nrfx_stop,
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.read = counter_nrfx_read,
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.set_alarm = counter_nrfx_set_alarm,
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.disable_alarm = counter_nrfx_disable_alarm,
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.set_wrap = counter_nrfx_set_wrap,
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.get_pending_int = counter_nrfx_get_pending_int,
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.get_wrap = counter_nrfx_get_wrap,
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.get_max_relative_alarm = counter_nrfx_get_max_relative_alarm,
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};
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#define COUNTER_NRFX_TIMER_DEVICE(idx) \
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static int counter_##idx##_init(struct device *dev) \
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{ \
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IRQ_CONNECT(NRFX_IRQ_NUMBER_GET(NRF_TIMER##idx), \
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||||
CONFIG_COUNTER_TIMER##idx##_IRQ_PRI, \
|
||||
nrfx_isr, nrfx_timer_##idx##_irq_handler, 0); \
|
||||
const nrfx_timer_config_t config = { \
|
||||
.frequency = CONFIG_COUNTER_TIMER##idx##_PRESCALER, \
|
||||
.mode = NRF_TIMER_MODE_TIMER, \
|
||||
.bit_width = (TIMER##idx##_MAX_SIZE == 32) ? \
|
||||
NRF_TIMER_BIT_WIDTH_32 : \
|
||||
NRF_TIMER_BIT_WIDTH_16, \
|
||||
.p_context = dev \
|
||||
}; \
|
||||
return init_timer(dev, &config); \
|
||||
} \
|
||||
static struct counter_nrfx_data counter_##idx##_data; \
|
||||
static const struct counter_alarm_cfg \
|
||||
*counter##idx##_alarm_cfgs[CC_TO_ID(TIMER##idx##_CC_NUM)]; \
|
||||
LOG_INSTANCE_REGISTER(LOG_MODULE_NAME, idx, CONFIG_COUNTER_LOG_LEVEL); \
|
||||
static const struct counter_nrfx_config nrfx_counter_##idx##_config = {\
|
||||
.info = { \
|
||||
.max_wrap = (TIMER##idx##_MAX_SIZE == 32) ? \
|
||||
0xffffffff : 0x0000ffff, \
|
||||
.freq = TIMER_CLOCK / \
|
||||
(1 << CONFIG_COUNTER_TIMER##idx##_PRESCALER), \
|
||||
.count_up = true, \
|
||||
.channels = CC_TO_ID(TIMER##idx##_CC_NUM), \
|
||||
}, \
|
||||
.alarm_cfgs = counter##idx##_alarm_cfgs, \
|
||||
.timer = NRFX_TIMER_INSTANCE(idx), \
|
||||
LOG_INSTANCE_PTR_INIT(log, LOG_MODULE_NAME, idx) \
|
||||
}; \
|
||||
DEVICE_AND_API_INIT(timer_##idx, CONFIG_COUNTER_##idx##_NAME, \
|
||||
counter_##idx##_init, \
|
||||
&counter_##idx##_data, \
|
||||
&nrfx_counter_##idx##_config.info, \
|
||||
PRE_KERNEL_1, CONFIG_KERNEL_INIT_PRIORITY_DEVICE, \
|
||||
&counter_nrfx_driver_api)
|
||||
|
||||
#ifdef CONFIG_COUNTER_TIMER0
|
||||
COUNTER_NRFX_TIMER_DEVICE(0);
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_COUNTER_TIMER1
|
||||
COUNTER_NRFX_TIMER_DEVICE(1);
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_COUNTER_TIMER2
|
||||
COUNTER_NRFX_TIMER_DEVICE(2);
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_COUNTER_TIMER3
|
||||
COUNTER_NRFX_TIMER_DEVICE(3);
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_COUNTER_TIMER4
|
||||
COUNTER_NRFX_TIMER_DEVICE(4);
|
||||
#endif
|
||||
|
|
@ -1169,6 +1169,7 @@
|
|||
#ifdef CONFIG_NRFX_TIMER
|
||||
#define NRFX_TIMER_ENABLED 1
|
||||
#endif
|
||||
|
||||
// <q> NRFX_TIMER0_ENABLED - Enable TIMER0 instance
|
||||
|
||||
|
||||
|
|
|
|||
|
|
@ -2147,6 +2147,8 @@
|
|||
#ifdef CONFIG_NRFX_TIMER
|
||||
#define NRFX_TIMER_ENABLED 1
|
||||
#endif
|
||||
|
||||
|
||||
// <q> NRFX_TIMER0_ENABLED - Enable TIMER0 instance
|
||||
|
||||
|
||||
|
|
|
|||
|
|
@ -2249,6 +2249,7 @@
|
|||
#ifdef CONFIG_NRFX_TIMER
|
||||
#define NRFX_TIMER_ENABLED 1
|
||||
#endif
|
||||
|
||||
// <q> NRFX_TIMER0_ENABLED - Enable TIMER0 instance
|
||||
|
||||
|
||||
|
|
|
|||
|
|
@ -45,6 +45,11 @@ config SOC_NRF52810
|
|||
|
||||
config SOC_NRF52832
|
||||
depends on SOC_SERIES_NRF52X
|
||||
select HAS_HW_NRF_TIMER0
|
||||
select HAS_HW_NRF_TIMER1
|
||||
select HAS_HW_NRF_TIMER2
|
||||
select HAS_HW_NRF_TIMER3
|
||||
select HAS_HW_NRF_TIMER4
|
||||
bool
|
||||
select SOC_COMPATIBLE_NRF52832
|
||||
select CPU_HAS_FPU
|
||||
|
|
@ -111,6 +116,11 @@ config SOC_NRF52832
|
|||
config SOC_NRF52840
|
||||
depends on SOC_SERIES_NRF52X
|
||||
bool
|
||||
select HAS_HW_NRF_TIMER0
|
||||
select HAS_HW_NRF_TIMER1
|
||||
select HAS_HW_NRF_TIMER2
|
||||
select HAS_HW_NRF_TIMER3
|
||||
select HAS_HW_NRF_TIMER4
|
||||
select CPU_HAS_FPU
|
||||
select HAS_HW_NRF_ACL
|
||||
select HAS_HW_NRF_CC310
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue