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LightSensor传感器

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我是靠谱客的博主 寂寞舞蹈，最近开发中收集的这篇文章主要介绍LightSensor传感器，觉得挺不错的，现在分享给大家，希望可以做个参考。

概述

sensor
将底层值转换的地方
khadas/hardware/amlogic/sensor/st/LightSensor.cpp
LightSensor::readEvents
在这里插入图片描述
上传adc原始数据

diff --git a/common/drivers/input/sensors/lsensor/cm3218.c b/common/drivers/input/sensors/lsensor/cm3218.c
index 03ab8f4291..c5f848063e 100755
--- a/common/drivers/input/sensors/lsensor/cm3218.c
+++ b/common/drivers/input/sensors/lsensor/cm3218.c
@@ -299,13 +364,13 @@ static int light_report_value(struct input_dev *input, int data)
                index = 7;
        }
 
-       input_report_abs(input, ABS_MISC, index);
+       input_report_abs(input, ABS_MISC, data);
        input_sync(input);
 
        return index;
 }

diff --git a/hardware/amlogic/sensor/st/LightSensor.cpp b/hardware/amlogic/sensor/st/LightSensor.cpp
index 4f4fde4f09..9c11e06643 100644
--- a/hardware/amlogic/sensor/st/LightSensor.cpp
+++ b/hardware/amlogic/sensor/st/LightSensor.cpp
@@ -147,7 +147,7 @@ int LightSensor::readEvents(sensors_event_t* data, int count)
             if (event->code == EVENT_TYPE_LIGHT) {
                 if (event->value != -1) {
                     // FIXME: not sure why we're getting -1 sometimes
-                    mPendingEvent.light = indexToValue(event->value);
+                    mPendingEvent.light = event->value;
                 }
             }
         } else if (type == EV_SYN) {
(END)

在这里插入图片描述

总的patch

diff --git a/common/drivers/input/sensors/lsensor/cm3218.c b/common/drivers/input/sensors/lsensor/cm3218.c
index 03ab8f4291..c5f848063e 100755
--- a/common/drivers/input/sensors/lsensor/cm3218.c
+++ b/common/drivers/input/sensors/lsensor/cm3218.c
@@ -71,7 +71,9 @@
 static int als_code = 20;
 static int change_sensitivity = 50;
 static int if_sensor_init;
-
+//add by zhongyukang
+extern struct class *sensor_class;
+static struct i2c_client *gclient;
 static int cm3218_read_ara(struct i2c_client *client)
 {
 	int status;
@@ -239,6 +241,62 @@ static int sensor_active(struct i2c_client *client, int enable, int rate)
 
 	return result;
 }
+static bool flags_debug = false;
+static ssize_t light_reg_show(struct class *class,
+		struct class_attribute *attr, char *buf)
+{
+	int reg_addr ;//= sprintf(buf , "%xn", cm3218_read(client, sensor->client->addr));
+    if (1 != sscanf(buf, "%d", &reg_addr)) {
+                       printk("<zyk> sscanf fail %sn",__func__);
+                       return -1;
+       }
+	return sprintf(buf, "%xn",cm3218_read(gclient, reg_addr));
+}
+static ssize_t light_reg_store(struct class *class,
+		struct class_attribute *attr, const char *buf, size_t count)
+{
+	 int reg_addr = 0,reg_value;
+        char *kbuf, *p, *argv[2];
+        int argn;
+        // int i;
+        unsigned int val = 0, val2 = 0;
+        ssize_t status;
+        long value;
+		int temp_reg_addr_value ;
+        kbuf = kstrdup(buf, GFP_KERNEL);
+        p = kbuf;
+        for (argn = 0; argn < 2; argn++) {
+                 argv[argn] = strsep(&p, " ");
+             printk(KERN_EMERG"func %s  %c n",__FUNCTION__,*argv[argn]);
+                  if (argv[argn] == NULL)
+                        break;
+        }
+        status = kstrtol(argv[0], 0, &value);
+        if (status == 0)
+        val = (unsigned int)value;
+        reg_addr = argn ? val : 0;
+        status = kstrtol(argv[1], 0, &value);
+        if (status == 0)
+        val2 = (unsigned int)value;
+        reg_value = (argn > 1) ? val2 : 0;
+        if (reg_addr < 0)
+        return  -EINVAL;
+
+    	printk(KERN_EMERG"zyk---- %s %x %x n",__FUNCTION__,reg_addr,reg_value);
+		if(reg_addr == 0xf){
+			temp_reg_addr_value = cm3218_read(gclient, reg_value);
+			printk("reg:0x%x value:0x%xn",reg_value,temp_reg_addr_value);
+			// status = sprintf(buf, "%xn",reg_value);
+		}else if(reg_addr == 0xd){
+			flags_debug = !flags_debug;
+		}
+		else {
+			cm3218_write(gclient, reg_addr, reg_value);
+		}
+		return count;
+
+}
+static CLASS_ATTR(light_reg, 0664, light_reg_show, light_reg_store);
 
 static int sensor_init(struct i2c_client *client)
 {
@@ -273,14 +331,21 @@ static int sensor_init(struct i2c_client *client)
 
 	if_sensor_init = 1;
 	msleep(250);
-
+	gclient = client;
+	status = class_create_file(sensor_class, &class_attr_light_reg);
+	if (status) {
+		printk(KERN_ERR "%s:Fail to creat accel class filen", __func__);
+		return status;
+	}
 	return status;
 }
 
 static int light_report_value(struct input_dev *input, int data)
 {
 	unsigned char index = 0;
-
+	if(!!flags_debug){
+		printk("%s data:%dn",__func__,data);
+	}
 	if (data <= 700) {
 		index = 0;
 	} else if (data <= 1400) {
@@ -299,13 +364,13 @@ static int light_report_value(struct input_dev *input, int data)
 		index = 7;
 	}
 
-	input_report_abs(input, ABS_MISC, index);
+	input_report_abs(input, ABS_MISC, data);
 	input_sync(input);
 
 	return index;
 }
 
-static int cm3218_read_lux(struct i2c_client *client, int *lux)
+int cm3218_read_lux(struct i2c_client *client, int *lux)
 {
 	int lux_data;
 
diff --git a/common/drivers/input/sensors/sensor-dev.c b/common/drivers/input/sensors/sensor-dev.c
index ef942f3901..2fccdfa698 100755
--- a/common/drivers/input/sensors/sensor-dev.c
+++ b/common/drivers/input/sensors/sensor-dev.c
@@ -50,7 +50,7 @@ struct sensor_calibration_data {
 static struct sensor_private_data *g_sensor[SENSOR_NUM_TYPES];
 static struct sensor_operate *sensor_ops[SENSOR_NUM_ID];
 static int sensor_probe_times[SENSOR_NUM_ID];
-static struct class *sensor_class;
+struct class *sensor_class;
 static struct sensor_calibration_data sensor_cali_data;
 
 static int sensor_calibration_data_read(struct sensor_calibration_data *calibration_data)
@@ -279,6 +279,44 @@ static ssize_t gyro_calibration_store(struct class *class,
 
 static CLASS_ATTR(gyro_calibration, 0664, gyro_calibration_show, gyro_calibration_store);
 
+#define __FITURE_LIGHT_LUX_DEBUG__ 
+#ifdef __FITURE_LIGHT_LUX_DEBUG__
+extern int cm3218_read_lux(struct i2c_client *client, int *lux);
+static ssize_t light_lux_show(struct class *class,
+		struct class_attribute *attr, char *buf){
+	int result = 0;
+	int value = 0;
+	struct sensor_private_data *sensor = g_sensor[SENSOR_TYPE_LIGHT];
+	if (sensor == NULL)
+			return -1;
+	cm3218_read_lux(sensor->client, &result);
+	if (result <= 700) {
+		value = 10;
+	} else if (result <= 1400) {
+		value = 160;
+	} else if (result <= 2800) {
+		value = 225;
+	} else if (result <= 5600) {
+		value = 320;
+	} else if (result <= 11200) {
+		value = 640;
+	} else if (result <= 22400) {
+		value = 1280;
+	} else if (result <= 44800) {
+		value = 2600;
+	} else {
+		value = 10240;
+	}
+	return sprintf(buf, "light lux value: %dn", value);
+}
+
+static ssize_t light_lux_store(struct class *class,
+		struct class_attribute *attr, const char *buf, size_t count){
+	return count;
+}
+
+static CLASS_ATTR(light_lux, 0664, light_lux_show, light_lux_store);
+#endif
 static int sensor_class_init(void)
 {
 	int ret ;
@@ -295,6 +333,13 @@ static int sensor_class_init(void)
 		printk(KERN_ERR "%s:Fail to creat gyro class filen", __func__);
 		return ret;
 	}
+	#ifdef __FITURE_LIGHT_LUX_DEBUG__
+	ret = class_create_file(sensor_class, &class_attr_light_lux);
+	if (ret) {
+		printk(KERN_ERR "%s:Fail to creat light sensor class filen", __func__);
+		return ret;
+	}
+	#endif
 	return 0;
 }
 
diff --git a/hardware/amlogic/sensor/st/LightSensor.cpp b/hardware/amlogic/sensor/st/LightSensor.cpp
index 4f4fde4f09..9c11e06643 100644
--- a/hardware/amlogic/sensor/st/LightSensor.cpp
+++ b/hardware/amlogic/sensor/st/LightSensor.cpp
@@ -147,7 +147,7 @@ int LightSensor::readEvents(sensors_event_t* data, int count)
             if (event->code == EVENT_TYPE_LIGHT) {
                 if (event->value != -1) {
                     // FIXME: not sure why we're getting -1 sometimes
-                    mPendingEvent.light = indexToValue(event->value);
+                    mPendingEvent.light = event->value;
                 }
             }
         } else if (type == EV_SYN) {

关掉sensor服务：

确认：

console:/ #  dumpsys sensorservice
No Sensors on the device
devInitCheck : -19
console:/ #

patch


---
 common/arch/arm/boot/dts/amlogic/manzala.dts  |  2 +-
 common/arch/arm/configs/manzala_a32_defconfig |  2 +-
 device/amlogic/common/core_amlogic.mk         |  7 +++---
 .../products/mbox/manifest/manifest_aosp.xml  |  9 --------
 device/amlogic/manzala/BoardConfig.mk         | 22 +++++++++----------
 5 files changed, 16 insertions(+), 26 deletions(-)

diff --git a/common/arch/arm/boot/dts/amlogic/manzala.dts b/common/arch/arm/boot/dts/amlogic/manzala.dts
index d41e3bb871..0542cfa09a 100755
--- a/common/arch/arm/boot/dts/amlogic/manzala.dts
+++ b/common/arch/arm/boot/dts/amlogic/manzala.dts
@@ -1001,7 +1001,7 @@
                irq_enable = <0>;
                poll_delay_ms = <30>;
                layout = <1>;
-               status = "okay";
+               status = "disabled";
        };
 };

diff --git a/common/arch/arm/configs/manzala_a32_defconfig b/common/arch/arm/configs/manzala_a32_defconfig
index b2ed708b27..13af79a45d 100755
--- a/common/arch/arm/configs/manzala_a32_defconfig
+++ b/common/arch/arm/configs/manzala_a32_defconfig
@@ -253,7 +253,7 @@ CONFIG_AMLOGIC_CRYPTO=y
 CONFIG_AMLOGIC_CRYPTO_DMA=y
 CONFIG_AMLOGIC_INPUT=y
 CONFIG_SENSOR_DEVICE=y
-CONFIG_LIGHT_DEVICE=y
+# CONFIG_LIGHT_DEVICE is not set
 CONFIG_AMLOGIC_AVIN_DETECT=y
 CONFIG_AMLOGIC_INPUT_KEYBOARD=y
 CONFIG_AMLOGIC_ADC_KEYPADS=y
diff --git a/device/amlogic/common/core_amlogic.mk b/device/amlogic/common/core_amlogic.mk
index 7a5cafd1f3..901950bdd0 100755
--- a/device/amlogic/common/core_amlogic.mk
+++ b/device/amlogic/common/core_amlogic.mk
@@ -209,7 +209,6 @@ PRODUCT_PACKAGES += 
     hwcomposer.amlogic 
     memtrack.amlogic 
     screen_source.amlogic 
-    sensors.amlogic 
     thermal.amlogic

 #glscaler and 3d format api
@@ -429,9 +428,9 @@ PRODUCT_PACKAGES += 
     android.hardware.light@2.0-impl 
     android.hardware.light@2.0-service
 # Sensor HAL
-PRODUCT_PACKAGES += 
-    android.hardware.sensors@1.0-service 
-    android.hardware.sensors@1.0-impl 
+#PRODUCT_PACKAGES += 
+#    android.hardware.sensors@1.0-service 
+#    android.hardware.sensors@1.0-impl 
 #thermal hal
 PRODUCT_PACKAGES += 
     android.hardware.thermal@1.0-impl 
diff --git a/device/amlogic/common/products/mbox/manifest/manifest_aosp.xml b/device/amlogic/common/products/mbox/manifest/manifest_aosp.xml
index 7eabbb0ad9..ed47eb0eb0 100755
--- a/device/amlogic/common/products/mbox/manifest/manifest_aosp.xml
+++ b/device/amlogic/common/products/mbox/manifest/manifest_aosp.xml
@@ -300,15 +300,6 @@
             <instance>default</instance>
         </interface>
     </hal>
-    <hal format="hidl">
-        <name>android.hardware.sensors</name>
-        <transport>hwbinder</transport>
-        <version>1.0</version>
-        <interface>
-            <name>ISensors</name>
-            <instance>default</instance>
-        </interface>
-    </hal>
     <sepolicy>
         <version>27.0</version>
     </sepolicy>
diff --git a/device/amlogic/manzala/BoardConfig.mk b/device/amlogic/manzala/BoardConfig.mk
index 08ccf247c8..16409a7173 100755
--- a/device/amlogic/manzala/BoardConfig.mk
+++ b/device/amlogic/manzala/BoardConfig.mk
@@ -104,17 +104,17 @@ BOARD_ROOT_EXTRA_FOLDERS += odm
 endif

 # Sensors
-BOARD_GRAVITY_SENSOR_SUPPORT := false
-BOARD_COMPASS_SENSOR_SUPPORT := false
-BOARD_GYROSCOPE_SENSOR_SUPPORT := false
-BOARD_PROXIMITY_SENSOR_SUPPORT := false
-BOARD_LIGHT_SENSOR_SUPPORT := true
-BOARD_PRESSURE_SENSOR_SUPPORT := false
-BOARD_TEMPERATURE_SENSOR_SUPPORT := false
-
-BOARD_SENSOR_ST := true
-BOARD_SENSOR_MPU_VR := false
-BOARD_SENSOR_MPU_PAD := false
+#BOARD_GRAVITY_SENSOR_SUPPORT := false
+#BOARD_COMPASS_SENSOR_SUPPORT := false
+#BOARD_GYROSCOPE_SENSOR_SUPPORT := false
+#BOARD_PROXIMITY_SENSOR_SUPPORT := false
+#BOARD_LIGHT_SENSOR_SUPPORT := true
+#BOARD_PRESSURE_SENSOR_SUPPORT := false
+#BOARD_TEMPERATURE_SENSOR_SUPPORT := false
+
+#BOARD_SENSOR_ST := true
+#BOARD_SENSOR_MPU_VR := false
+#BOARD_SENSOR_MPU_PAD := false
 BOARD_ODMIMAGE_FILE_SYSTEM_TYPE := ext4
 BOARD_USES_ODMIMAGE := true

--
2.17.1

最后

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