sensor: add isl29035 light sensor
Add device driver for the isl29035 ambient light and infrared
light sensor.
Datasheet:
http://www.intersil.com/content/dam/Intersil/documents/isl2/isl29035.pdf
Origin: Original
Change-Id: Ib285f8def32d78d50f1d92998dca5f55d6603ca5
Signed-off-by: Bogdan Davidoaia <bogdan.m.davidoaia@intel.com>
This commit is contained in:
Bogdan Davidoaia
Gerrit Code Review
parent
fa868a7846
commit
babb62a0ed
6 changed files with 768 additions and 0 deletions
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@ -46,6 +46,8 @@ config SENSOR_DEBUG
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source "drivers/sensor/Kconfig.bma280"
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source "drivers/sensor/Kconfig.bma280"
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source "drivers/sensor/Kconfig.isl29035"
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source "drivers/sensor/Kconfig.mcp9808"
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source "drivers/sensor/Kconfig.mcp9808"
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source "drivers/sensor/Kconfig.sx9500"
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source "drivers/sensor/Kconfig.sx9500"
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225
drivers/sensor/Kconfig.isl29035
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225
drivers/sensor/Kconfig.isl29035
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@ -0,0 +1,225 @@
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# Kconfig.isl29035 - ISL29035 light sensor configuration options
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#
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# Copyright (c) 2016 Intel Corporation
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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menuconfig ISL29035
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bool
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prompt "ISL29035 light sensor"
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default n
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depends on SENSOR && I2C && NANO_TIMERS && NANO_TIMEOUTS
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help
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Enable driver for the ISL29035 light sensor.
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config ISL29035_NAME
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string
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prompt "Driver name"
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default "ISL29035"
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depends on ISL29035
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help
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Device name with which the ISL29035 sensor is identified.
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config ISL29035_INIT_PRIORITY
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int
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prompt "Init priority"
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default 70
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depends on ISL29035
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help
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Device driver initialization priority for ISL29035.
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The device should be initialized after I2C.
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config ISL29035_I2C_MASTER_DEV_NAME
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string
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prompt "I2C Master"
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depends on ISL29035
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default "I2C0"
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help
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The device name of the I2C master device to which the ISL29035
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chip is connected.
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config ISL29035_FIBER_PRIORITY
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int
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prompt "Fiber priority"
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depends on ISL29035
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default 10
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help
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Priority of fiber used to handle the timer and threshold triggers.
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choice
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prompt "Full scale lux range"
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default ISL29035_LUX_RANGE_1K
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depends on ISL29035
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help
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Maximum allowable lux value. Lower range values offer better
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resolution.
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config ISL29035_LUX_RANGE_1K
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bool
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prompt "1000"
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config ISL29035_LUX_RANGE_4K
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bool
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prompt "4000"
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config ISL29035_LUX_RANGE_16K
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bool
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prompt "16000"
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config ISL29035_LUX_RANGE_64K
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bool
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prompt "64000"
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endchoice
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choice
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prompt "Integration time"
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default ISL29035_INTEGRATION_TIME_105K
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depends on ISL29035
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help
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The sampling period of the internal ADC of the light sensor.
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Lower integration time values mean lower ADC resolution.
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config ISL29035_INTEGRATION_TIME_26
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bool
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prompt "0.0256 ms"
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config ISL29035_INTEGRATION_TIME_410
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bool
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prompt "0.41 ms"
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config ISL29035_INTEGRATION_TIME_6500
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bool
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prompt "6.5 ms"
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config ISL29035_INTEGRATION_TIME_105K
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bool
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prompt "105 ms"
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endchoice
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choice
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prompt "Active sensing mode"
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depends on ISL29035
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default ISL29035_MODE_ALS
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help
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Sensing mode in which the ISL29035 will function. The chip can be
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configured either for either ambinet light or infrared sensing.
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config ISL29035_MODE_ALS
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bool
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prompt "ambient light"
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help
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Sensing mode for ambient light spectrum.
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config ISL29035_MODE_IR
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bool
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prompt "infrared"
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help
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Sensing mode for infrared spectrum.
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endchoice
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choice
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prompt "Trigger mode"
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depends on ISL29035 && ISL29035_MODE_ALS && GPIO
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default ISL29035_TRIGGER_NONE
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help
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Specify the type of triggering to be used by the driver.
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Only available for ambient light sensing mode.
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config ISL29035_TRIGGER_NONE
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bool
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prompt "No trigger"
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config ISL29035_TRIGGER_GLOBAL_FIBER
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bool
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prompt "Use global fiber"
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depends on GPIO
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select ISL29035_TRIGGER
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select SENSOR_DELAYED_WORK
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config ISL29035_TRIGGER_OWN_FIBER
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bool
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prompt "Use own fiber"
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depends on GPIO
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select ISL29035_TRIGGER
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endchoice
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config ISL29035_TRIGGER
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bool
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depends on ISL29035
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config ISL29035_GPIO_DEV_NAME
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string
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prompt "GPIO device"
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default "GPIO_0"
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depends on ISL29035 && ISL29035_TRIGGER
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help
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The device name of the GPIO device to which the ISL29035 interrupt
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pin is connected.
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config ISL29035_GPIO_PIN_NUM
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int
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prompt "GPIO pin number"
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default 0
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depends on ISL29035 && ISL29035_TRIGGER
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help
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The number of the GPIO pin to which the ISL29035 interrupt pin is
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connected.
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config ISL29035_FIBER_PRIORITY
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int
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prompt "Fiber priority"
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depends on ISL29035 && ISL29035_TRIGGER_OWN_FIBER
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default 10
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help
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Priority of fiber used by the driver to handle interrupts.
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config ISL29035_FIBER_STACK_SIZE
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int
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prompt "Fiber stack size"
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depends on ISL29035 && ISL29035_TRIGGER_OWN_FIBER
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default 1024
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help
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Stack size of fiber used by the driver to handle interrupts.
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choice
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prompt "Interrupt persist cycles"
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depends on ISL29035 && ISL29035_TRIGGER
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default ISL29035_INT_PERSIST_1
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help
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Number of consecutive intergration cycles for which the data samples
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need to remain outside the threshold window in order for the interrupt
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to be triggered.
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config ISL29035_INT_PERSIST_1
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bool
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prompt "1"
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config ISL29035_INT_PERSIST_4
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bool
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prompt "4"
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config ISL29035_INT_PERSIST_8
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bool
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prompt "8"
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config ISL29035_INT_PERSIST_16
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bool
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prompt "16"
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endchoice
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@ -4,6 +4,8 @@ obj-$(CONFIG_SENSOR_DELAYED_WORK) += sensor.o
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obj-$(CONFIG_BMA280) += sensor_bma280.o
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obj-$(CONFIG_BMA280) += sensor_bma280.o
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obj-$(CONFIG_BMA280_TRIGGER) += sensor_bma280_trigger.o
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obj-$(CONFIG_BMA280_TRIGGER) += sensor_bma280_trigger.o
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obj-$(CONFIG_ISL29035) += sensor_isl29035.o
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obj-$(CONFIG_ISL29035_TRIGGER) += sensor_isl29035_trigger.o
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obj-$(CONFIG_MCP9808) += sensor_mcp9808.o
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obj-$(CONFIG_MCP9808) += sensor_mcp9808.o
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obj-$(CONFIG_MCP9808_TRIGGER) += sensor_mcp9808_trigger.o
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obj-$(CONFIG_MCP9808_TRIGGER) += sensor_mcp9808_trigger.o
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obj-$(CONFIG_SX9500) += sensor_sx9500.o
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obj-$(CONFIG_SX9500) += sensor_sx9500.o
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202
drivers/sensor/sensor_isl29035.c
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202
drivers/sensor/sensor_isl29035.c
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@ -0,0 +1,202 @@
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/* sensor_isl29035.c - driver for ISL29035 light sensor */
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/*
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* Copyright (c) 2016 Intel Corporation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <arch/cpu.h>
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#include <device.h>
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#include <i2c.h>
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#include <init.h>
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#include <nanokernel.h>
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#include <sensor.h>
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#include <zephyr.h>
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#include "sensor_isl29035.h"
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int isl29035_write_reg(struct isl29035_driver_data *drv_data,
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uint8_t reg, uint8_t val)
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{
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uint8_t tx_buf[2] = {reg, val};
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return i2c_write(drv_data->i2c, tx_buf, sizeof(tx_buf),
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ISL29035_I2C_ADDRESS);
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}
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int isl29035_read_reg(struct isl29035_driver_data *drv_data,
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uint8_t reg, uint8_t *val)
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{
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struct i2c_msg msgs[2] = {
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{
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.buf = ®,
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.len = 1,
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.flags = I2C_MSG_WRITE | I2C_MSG_RESTART,
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},
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{
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.buf = val,
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.len = 1,
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.flags = I2C_MSG_READ | I2C_MSG_STOP,
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}
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};
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return i2c_transfer(drv_data->i2c, msgs, 2, ISL29035_I2C_ADDRESS);
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}
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int isl29035_update_reg(struct isl29035_driver_data *drv_data,
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uint8_t reg, uint8_t mask, uint8_t val)
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{
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uint8_t old_val = 0;
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uint8_t new_val;
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if (isl29035_read_reg(drv_data, reg, &old_val) != DEV_OK) {
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return DEV_FAIL;
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}
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new_val = old_val & ~mask;
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new_val |= val & mask;
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return isl29035_write_reg(drv_data, reg, new_val);
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}
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static int isl29035_sample_fetch(struct device *dev)
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{
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struct isl29035_driver_data *drv_data = dev->driver_data;
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uint8_t msb, lsb;
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int ret;
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ret = isl29035_read_reg(drv_data, ISL29035_DATA_MSB_REG, &msb);
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if (ret != DEV_OK) {
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return DEV_FAIL;
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}
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ret = isl29035_read_reg(drv_data, ISL29035_DATA_LSB_REG, &lsb);
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if (ret != DEV_OK) {
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return DEV_FAIL;
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}
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drv_data->data_sample = (msb << 8) + lsb;
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return DEV_OK;
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}
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static int isl29035_channel_get(struct device *dev,
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enum sensor_channel chan,
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struct sensor_value *val)
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{
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struct isl29035_driver_data *drv_data = dev->driver_data;
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uint64_t tmp;
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#if CONFIG_ISL29035_MODE_ALS
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/* val = sample_val * lux_range / (2 ^ adc_data_bits) */
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tmp = (uint64_t)drv_data->data_sample * ISL29035_LUX_RANGE;
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val->type = SENSOR_TYPE_INT_PLUS_MICRO;
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val->val1 = tmp >> ISL29035_ADC_DATA_BITS;
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tmp = (tmp & ISL29035_ADC_DATA_MASK) * 1000000;
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val->val2 = tmp >> ISL29035_ADC_DATA_BITS;
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#elif CONFIG_ISL29035_MODE_IR
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ARG_UNUSED(tmp);
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val->type = SENSOR_TYPE_INT;
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val->val1 = drv_data->data_sample;
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#endif
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return DEV_OK;
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}
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static struct sensor_driver_api isl29035_api = {
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#if CONFIG_ISL29035_TRIGGER
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.attr_set = &isl29035_attr_set,
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.trigger_set = &isl29035_trigger_set,
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#endif
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.sample_fetch = &isl29035_sample_fetch,
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.channel_get = &isl29035_channel_get,
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};
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static int isl29035_init(struct device *dev)
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{
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struct isl29035_driver_data *drv_data = dev->driver_data;
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int ret;
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drv_data->i2c = device_get_binding(CONFIG_ISL29035_I2C_MASTER_DEV_NAME);
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if (drv_data->i2c == NULL) {
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DBG("Failed to get I2C device.\n");
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return DEV_INVALID_CONF;
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}
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dev->driver_api = &isl29035_api;
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drv_data->data_sample = 0;
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/* clear blownout status bit */
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ret = isl29035_update_reg(drv_data, ISL29035_ID_REG,
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ISL29035_BOUT_MASK, 0);
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||||||
|
if (ret != DEV_OK) {
|
||||||
|
DBG("Failed to clear blownout status bit.\n");
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* set command registers to set default attributes */
|
||||||
|
ret = isl29035_write_reg(drv_data, ISL29035_COMMAND_I_REG, 0);
|
||||||
|
if (ret != DEV_OK) {
|
||||||
|
DBG("Failed to clear COMMAND-I.\n");
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
ret = isl29035_write_reg(drv_data, ISL29035_COMMAND_II_REG, 0);
|
||||||
|
if (ret != DEV_OK) {
|
||||||
|
DBG("Failed to clear COMMAND-II.\n");
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* set operation mode */
|
||||||
|
ret = isl29035_update_reg(drv_data,
|
||||||
|
ISL29035_COMMAND_I_REG, ISL29035_OPMODE_MASK,
|
||||||
|
ISL29035_ACTIVE_OPMODE << ISL29035_OPMODE_SHIFT);
|
||||||
|
if (ret != DEV_OK) {
|
||||||
|
DBG("Failed to set opmode.\n");
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* set lux range */
|
||||||
|
ret = isl29035_update_reg(drv_data,
|
||||||
|
ISL29035_COMMAND_II_REG, ISL29035_LUX_RANGE_MASK,
|
||||||
|
ISL29035_LUX_RANGE_IDX << ISL29035_LUX_RANGE_SHIFT);
|
||||||
|
if (ret != DEV_OK) {
|
||||||
|
DBG("Failed to set lux range.\n");
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* set ADC resolution */
|
||||||
|
ret = isl29035_update_reg(drv_data,
|
||||||
|
ISL29035_COMMAND_II_REG, ISL29035_ADC_RES_MASK,
|
||||||
|
ISL29035_ADC_RES_IDX << ISL29035_ADC_RES_SHIFT);
|
||||||
|
if (ret != DEV_OK) {
|
||||||
|
DBG("Failed to set ADC resolution.\n");
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
#ifdef CONFIG_ISL29035_TRIGGER
|
||||||
|
ret = isl29035_init_interrupt(dev);
|
||||||
|
if (ret != DEV_OK) {
|
||||||
|
DBG("Failed to initialize interrupt.\n");
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
#endif
|
||||||
|
|
||||||
|
return DEV_OK;
|
||||||
|
}
|
||||||
|
|
||||||
|
struct isl29035_driver_data isl29035_data;
|
||||||
|
|
||||||
|
DEVICE_INIT(isl29035_dev, CONFIG_ISL29035_NAME, &isl29035_init,
|
||||||
|
&isl29035_data, NULL, SECONDARY, CONFIG_ISL29035_INIT_PRIORITY);
|
||||||
159
drivers/sensor/sensor_isl29035.h
Normal file
159
drivers/sensor/sensor_isl29035.h
Normal file
|
|
@ -0,0 +1,159 @@
|
||||||
|
/* sensor_isl29035.h - header file for ISL29035 light sensor driver */
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Copyright (c) 2016 Intel Corporation
|
||||||
|
*
|
||||||
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
||||||
|
* you may not use this file except in compliance with the License.
|
||||||
|
* You may obtain a copy of the License at
|
||||||
|
*
|
||||||
|
* http://www.apache.org/licenses/LICENSE-2.0
|
||||||
|
*
|
||||||
|
* Unless required by applicable law or agreed to in writing, software
|
||||||
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
||||||
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||||
|
* See the License for the specific language governing permissions and
|
||||||
|
* limitations under the License.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#ifndef _SENSOR_ISL29035_H_
|
||||||
|
#define _SENSOR_ISL29035_H_
|
||||||
|
|
||||||
|
#include <device.h>
|
||||||
|
#include <nanokernel.h>
|
||||||
|
#include <sensor.h>
|
||||||
|
|
||||||
|
#ifndef CONFIG_SENSOR_DEBUG
|
||||||
|
#define DBG(...) { ; }
|
||||||
|
#else
|
||||||
|
#include <misc/printk.h>
|
||||||
|
#define DBG printk
|
||||||
|
#endif /* CONFIG_SENSOR_DEBUG */
|
||||||
|
|
||||||
|
#define ISL29035_I2C_ADDRESS 0x44
|
||||||
|
|
||||||
|
#define ISL29035_COMMAND_I_REG 0x00
|
||||||
|
#define ISL29035_OPMODE_SHIFT 5
|
||||||
|
#define ISL29035_OPMODE_MASK (7 << ISL29035_OPMODE_SHIFT)
|
||||||
|
#define ISL29035_INT_BIT_SHIFT 2
|
||||||
|
#define ISL29035_INT_BIT_MASK (1 << ISL29035_INT_BIT_SHIFT)
|
||||||
|
#define ISL29035_INT_PRST_SHIFT 0
|
||||||
|
#define ISL29035_INT_PRST_MASK (3 << ISL29035_INT_BIT_SHIFT)
|
||||||
|
|
||||||
|
#define ISL29035_OPMODE_OFF 0
|
||||||
|
#define ISL29035_OPMODE_ALS_ONCE 1
|
||||||
|
#define ISL29035_OPMODE_IR_ONCE 2
|
||||||
|
#define ISL29035_OPMODE_ALS_CONT 5
|
||||||
|
#define ISL29035_OPMODE_IR_CONT 6
|
||||||
|
|
||||||
|
#define ISL29035_COMMAND_II_REG 0x01
|
||||||
|
#define ISL29035_LUX_RANGE_SHIFT 0
|
||||||
|
#define ISL29035_LUX_RANGE_MASK (3 << ISL29035_LUX_RANGE_SHIFT)
|
||||||
|
#define ISL29035_ADC_RES_SHIFT 2
|
||||||
|
#define ISL29035_ADC_RES_MASK (3 << ISL29035_ADC_RES_SHIFT)
|
||||||
|
|
||||||
|
#define ISL29035_DATA_LSB_REG 0x02
|
||||||
|
#define ISL29035_DATA_MSB_REG 0x03
|
||||||
|
#define ISL29035_INT_LT_LSB_REG 0x04
|
||||||
|
#define ISL29035_INT_LT_MSB_REG 0x05
|
||||||
|
#define ISL29035_INT_HT_LSB_REG 0x06
|
||||||
|
#define ISL29035_INT_HT_MSB_REG 0x07
|
||||||
|
|
||||||
|
#define ISL29035_ID_REG 0x0F
|
||||||
|
#define ISL29035_BOUT_SHIFT 7
|
||||||
|
#define ISL29035_BOUT_MASK (1 << ISL29035_BOUT_SHIFT)
|
||||||
|
#define ISL29035_ID_SHIFT 3
|
||||||
|
#define ISL29035_ID_MASK (3 << ISL29035_ID_SHIFT)
|
||||||
|
|
||||||
|
#if CONFIG_ISL29035_MODE_ALS
|
||||||
|
#define ISL29035_ACTIVE_OPMODE ISL29035_OPMODE_ALS_CONT
|
||||||
|
#define ISL29035_ACTIVE_CHAN SENSOR_CHAN_LIGHT
|
||||||
|
#elif CONFIG_ISL29035_MODE_IR
|
||||||
|
#define ISL29035_ACTIVE_OPMODE ISL29035_OPMODE_IR_CONT
|
||||||
|
#define ISL29035_ACTIVE_CHAN SENSOR_CHAN_IR
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#if CONFIG_ISL29035_LUX_RANGE_1K
|
||||||
|
#define ISL29035_LUX_RANGE_IDX 0
|
||||||
|
#define ISL29035_LUX_RANGE 1000
|
||||||
|
#elif CONFIG_ISL29035_LUX_RANGE_4
|
||||||
|
#define ISL29035_LUX_RANGE_IDX 1
|
||||||
|
#define ISL29035_LUX_RANGE 4000
|
||||||
|
#elif CONFIG_ISL29035_LUX_RANGE_16K
|
||||||
|
#define ISL29035_LUX_RANGE_IDX 2
|
||||||
|
#define ISL29035_LUX_RANGE 16000
|
||||||
|
#elif CONFIG_ISL29035_LUX_RANGE_64K
|
||||||
|
#define ISL29035_LUX_RANGE_IDX 3
|
||||||
|
#define ISL29035_LUX_RANGE 64000
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#if CONFIG_ISL29035_INTEGRATION_TIME_26
|
||||||
|
#define ISL29035_ADC_RES_IDX 3
|
||||||
|
#elif CONFIG_ISL29035_INTEGRATION_TIME_410
|
||||||
|
#define ISL29035_ADC_RES_IDX 2
|
||||||
|
#elif CONFIG_ISL29035_INTEGRATION_TIME_6500
|
||||||
|
#define ISL29035_ADC_RES_IDX 1
|
||||||
|
#elif CONFIG_ISL29035_INTEGRATION_TIME_105K
|
||||||
|
#define ISL29035_ADC_RES_IDX 0
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#define ISL29035_ADC_DATA_BITS (16 - 4 * ISL29035_ADC_RES_IDX)
|
||||||
|
#define ISL29035_ADC_DATA_MASK (0xFFFF >> (16 - ISL29035_ADC_DATA_BITS))
|
||||||
|
|
||||||
|
#if CONFIG_ISL29035_INT_PERSIST_1
|
||||||
|
#define ISL29035_INT_PRST_IDX 0
|
||||||
|
#define ISL29035_INT_PRST_CYCLES 1
|
||||||
|
#elif CONFIG_ISL29035_INT_PERSIST_4
|
||||||
|
#define ISL29035_INT_PRST_IDX 1
|
||||||
|
#define ISL29035_INT_PRST_CYCLES 4
|
||||||
|
#elif CONFIG_ISL29035_INT_PERSIST_8
|
||||||
|
#define ISL29035_INT_PRST_IDX 2
|
||||||
|
#define ISL29035_INT_PRST_CYCLES 8
|
||||||
|
#elif CONFIG_ISL29035_INT_PERSIST_16
|
||||||
|
#define ISL29035_INT_PRST_IDX 3
|
||||||
|
#define ISL29035_INT_PRST_CYCLES 16
|
||||||
|
#endif
|
||||||
|
|
||||||
|
struct isl29035_driver_data {
|
||||||
|
struct device *i2c;
|
||||||
|
uint16_t data_sample;
|
||||||
|
|
||||||
|
#if CONFIG_ISL29035_TRIGGER
|
||||||
|
struct device *gpio;
|
||||||
|
|
||||||
|
struct sensor_trigger th_trigger;
|
||||||
|
sensor_trigger_handler_t th_handler;
|
||||||
|
|
||||||
|
#if defined(CONFIG_ISL29035_TRIGGER_OWN_FIBER)
|
||||||
|
char __stack fiber_stack[CONFIG_ISL29035_FIBER_STACK_SIZE];
|
||||||
|
struct nano_sem gpio_sem;
|
||||||
|
#elif defined(CONFIG_ISL29035_TRIGGER_GLOBAL_FIBER)
|
||||||
|
struct sensor_work work;
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#endif /* CONFIG_ISL29035_TRIGGER */
|
||||||
|
};
|
||||||
|
|
||||||
|
#ifdef CONFIG_ISL29035_TRIGGER
|
||||||
|
int isl29035_write_reg(struct isl29035_driver_data *drv_data,
|
||||||
|
uint8_t reg, uint8_t val);
|
||||||
|
|
||||||
|
int isl29035_read_reg(struct isl29035_driver_data *drv_data,
|
||||||
|
uint8_t reg, uint8_t *val);
|
||||||
|
|
||||||
|
int isl29035_update_reg(struct isl29035_driver_data *drv_data,
|
||||||
|
uint8_t reg, uint8_t mask, uint8_t val);
|
||||||
|
|
||||||
|
int isl29035_attr_set(struct device *dev,
|
||||||
|
enum sensor_channel chan,
|
||||||
|
enum sensor_attribute attr,
|
||||||
|
const struct sensor_value *val);
|
||||||
|
|
||||||
|
int isl29035_trigger_set(struct device *dev,
|
||||||
|
const struct sensor_trigger *trig,
|
||||||
|
sensor_trigger_handler_t handler);
|
||||||
|
|
||||||
|
int isl29035_init_interrupt(struct device *dev);
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#endif /* _SENSOR_ISL29035_H_ */
|
||||||
178
drivers/sensor/sensor_isl29035_trigger.c
Normal file
178
drivers/sensor/sensor_isl29035_trigger.c
Normal file
|
|
@ -0,0 +1,178 @@
|
||||||
|
/* sensor_isl29035.c - trigger support for ISL29035 light sensor */
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Copyright (c) 2016 Intel Corporation
|
||||||
|
*
|
||||||
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
||||||
|
* you may not use this file except in compliance with the License.
|
||||||
|
* You may obtain a copy of the License at
|
||||||
|
*
|
||||||
|
* http://www.apache.org/licenses/LICENSE-2.0
|
||||||
|
*
|
||||||
|
* Unless required by applicable law or agreed to in writing, software
|
||||||
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
||||||
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||||
|
* See the License for the specific language governing permissions and
|
||||||
|
* limitations under the License.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#include <gpio.h>
|
||||||
|
#include <misc/util.h>
|
||||||
|
#include <nanokernel.h>
|
||||||
|
|
||||||
|
#include "sensor_isl29035.h"
|
||||||
|
|
||||||
|
extern struct isl29035_driver_data isl29035_data;
|
||||||
|
|
||||||
|
static uint16_t isl29035_lux_processed_to_raw(struct sensor_value const *val)
|
||||||
|
{
|
||||||
|
uint64_t raw_val, ival, uval;
|
||||||
|
|
||||||
|
ival = val->val1;
|
||||||
|
if (val->type == SENSOR_TYPE_INT) {
|
||||||
|
uval = 0;
|
||||||
|
} else {
|
||||||
|
uval = val->val2;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* raw_val = val * (2 ^ adc_data_bits) / lux_range */
|
||||||
|
raw_val = (ival << ISL29035_ADC_DATA_BITS) +
|
||||||
|
(uval << ISL29035_ADC_DATA_BITS) / 1000000;
|
||||||
|
|
||||||
|
return raw_val / ISL29035_LUX_RANGE;
|
||||||
|
}
|
||||||
|
|
||||||
|
int isl29035_attr_set(struct device *dev,
|
||||||
|
enum sensor_channel chan,
|
||||||
|
enum sensor_attribute attr,
|
||||||
|
const struct sensor_value *val)
|
||||||
|
{
|
||||||
|
struct isl29035_driver_data *drv_data = dev->driver_data;
|
||||||
|
uint8_t lsb_reg, msb_reg;
|
||||||
|
uint16_t raw_val;
|
||||||
|
|
||||||
|
if (attr == SENSOR_ATTR_UPPER_THRESH) {
|
||||||
|
lsb_reg = ISL29035_INT_HT_LSB_REG;
|
||||||
|
msb_reg = ISL29035_INT_HT_MSB_REG;
|
||||||
|
} else if (attr == SENSOR_ATTR_LOWER_THRESH) {
|
||||||
|
lsb_reg = ISL29035_INT_LT_LSB_REG;
|
||||||
|
msb_reg = ISL29035_INT_LT_MSB_REG;
|
||||||
|
} else {
|
||||||
|
return DEV_INVALID_OP;
|
||||||
|
}
|
||||||
|
|
||||||
|
raw_val = isl29035_lux_processed_to_raw(val);
|
||||||
|
|
||||||
|
if (isl29035_write_reg(drv_data, lsb_reg, raw_val & 0xFF) != DEV_OK ||
|
||||||
|
isl29035_write_reg(drv_data, msb_reg, raw_val >> 8) != DEV_OK) {
|
||||||
|
DBG("Failed to set attribute.\n");
|
||||||
|
return DEV_FAIL;
|
||||||
|
}
|
||||||
|
|
||||||
|
return DEV_OK;
|
||||||
|
}
|
||||||
|
|
||||||
|
static void isl29035_gpio_callback(struct device *dev, uint32_t pin)
|
||||||
|
{
|
||||||
|
gpio_pin_disable_callback(dev, pin);
|
||||||
|
|
||||||
|
#if defined(CONFIG_ISL29035_TRIGGER_OWN_FIBER)
|
||||||
|
nano_sem_give(&isl29035_data.gpio_sem);
|
||||||
|
#elif defined(CONFIG_ISL29035_TRIGGER_GLOBAL_FIBER)
|
||||||
|
nano_isr_fifo_put(sensor_get_work_fifo(), &isl29035_data.work);
|
||||||
|
#endif
|
||||||
|
}
|
||||||
|
|
||||||
|
static void isl29035_fiber_cb(void *arg)
|
||||||
|
{
|
||||||
|
struct device *dev = arg;
|
||||||
|
struct isl29035_driver_data *drv_data = dev->driver_data;
|
||||||
|
uint8_t val;
|
||||||
|
|
||||||
|
/* clear interrupt */
|
||||||
|
isl29035_read_reg(drv_data, ISL29035_COMMAND_I_REG, &val);
|
||||||
|
|
||||||
|
if (drv_data->th_handler != NULL) {
|
||||||
|
drv_data->th_handler(dev, &drv_data->th_trigger);
|
||||||
|
}
|
||||||
|
|
||||||
|
gpio_pin_enable_callback(drv_data->gpio, CONFIG_ISL29035_GPIO_PIN_NUM);
|
||||||
|
}
|
||||||
|
|
||||||
|
#ifdef CONFIG_ISL29035_TRIGGER_OWN_FIBER
|
||||||
|
static void isl29035_fiber(int ptr, int unused)
|
||||||
|
{
|
||||||
|
struct device *dev = INT_TO_POINTER(ptr);
|
||||||
|
struct isl29035_driver_data *drv_data = dev->driver_data;
|
||||||
|
|
||||||
|
ARG_UNUSED(unused);
|
||||||
|
|
||||||
|
while (1) {
|
||||||
|
nano_fiber_sem_take(&drv_data->gpio_sem, TICKS_UNLIMITED);
|
||||||
|
isl29035_fiber_cb(dev);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
#endif
|
||||||
|
|
||||||
|
int isl29035_trigger_set(struct device *dev,
|
||||||
|
const struct sensor_trigger *trig,
|
||||||
|
sensor_trigger_handler_t handler)
|
||||||
|
{
|
||||||
|
struct isl29035_driver_data *drv_data = dev->driver_data;
|
||||||
|
|
||||||
|
/* disable interrupt callback while changing parameters */
|
||||||
|
gpio_pin_disable_callback(drv_data->gpio, CONFIG_ISL29035_GPIO_PIN_NUM);
|
||||||
|
|
||||||
|
drv_data->th_handler = handler;
|
||||||
|
drv_data->th_trigger = *trig;
|
||||||
|
|
||||||
|
/* enable interrupt callback */
|
||||||
|
gpio_pin_enable_callback(drv_data->gpio, CONFIG_ISL29035_GPIO_PIN_NUM);
|
||||||
|
|
||||||
|
return DEV_OK;
|
||||||
|
}
|
||||||
|
|
||||||
|
int isl29035_init_interrupt(struct device *dev)
|
||||||
|
{
|
||||||
|
struct isl29035_driver_data *drv_data = dev->driver_data;
|
||||||
|
int ret;
|
||||||
|
|
||||||
|
/* set interrupt persistence */
|
||||||
|
ret = isl29035_update_reg(drv_data,
|
||||||
|
ISL29035_COMMAND_I_REG, ISL29035_INT_PRST_MASK,
|
||||||
|
ISL29035_INT_PRST_IDX << ISL29035_INT_PRST_SHIFT);
|
||||||
|
if (ret != DEV_OK) {
|
||||||
|
DBG("Failed to set interrupt persistence cycles.\n");
|
||||||
|
return DEV_FAIL;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* setup gpio interrupt */
|
||||||
|
drv_data->gpio = device_get_binding(CONFIG_ISL29035_GPIO_DEV_NAME);
|
||||||
|
if (drv_data->gpio == NULL) {
|
||||||
|
DBG("Failed to get GPIO device.\n");
|
||||||
|
return DEV_INVALID_CONF;
|
||||||
|
}
|
||||||
|
|
||||||
|
gpio_pin_configure(drv_data->gpio, CONFIG_ISL29035_GPIO_PIN_NUM,
|
||||||
|
GPIO_DIR_IN | GPIO_INT | GPIO_INT_LEVEL |
|
||||||
|
GPIO_INT_ACTIVE_LOW | GPIO_INT_DEBOUNCE);
|
||||||
|
|
||||||
|
ret = gpio_set_callback(drv_data->gpio, isl29035_gpio_callback);
|
||||||
|
if (ret != DEV_OK) {
|
||||||
|
DBG("Failed to set gpio callback.\n");
|
||||||
|
return DEV_FAIL;
|
||||||
|
}
|
||||||
|
|
||||||
|
#if defined(CONFIG_ISL29035_TRIGGER_OWN_FIBER)
|
||||||
|
nano_sem_init(&drv_data->gpio_sem);
|
||||||
|
|
||||||
|
fiber_start(drv_data->fiber_stack, CONFIG_ISL29035_FIBER_STACK_SIZE,
|
||||||
|
(nano_fiber_entry_t)isl29035_fiber, POINTER_TO_INT(dev),
|
||||||
|
0, CONFIG_ISL29035_FIBER_PRIORITY, 0);
|
||||||
|
#elif defined(CONFIG_ISL29035_TRIGGER_GLOBAL_FIBER)
|
||||||
|
drv_data->work.handler = isl29035_fiber_cb;
|
||||||
|
drv_data->work.arg = dev;
|
||||||
|
#endif
|
||||||
|
|
||||||
|
return DEV_OK;
|
||||||
|
}
|
||||||
Loading…
Add table
Add a link
Reference in a new issue