diff options
| -rw-r--r-- | Makefile | 4 | ||||
| -rw-r--r-- | ina260.c | 29 |
2 files changed, 31 insertions, 2 deletions
@@ -8,12 +8,12 @@ all: ina260.c make -C $(LML) M=$(PWD) modules run: ina260.c - -echo 0x40 > /sys/bus/i2c/devices/i2c-2/delete_device + -echo 0x41 > /sys/bus/i2c/devices/i2c-2/delete_device -rmmod ina260 make clean make insmod ina260.ko - echo ina260 0x40 > /sys/bus/i2c/devices/i2c-2/new_device + echo ina260 0x41 > /sys/bus/i2c/devices/i2c-2/new_device read: read.c gcc $^ -o read @@ -16,6 +16,7 @@ #define INA260_REG_MANUFACTURER 0xFE #define INA260_REG_DIE 0xFF +#define INA260_LSB_POWER 10 // 10mW #define INA260_IS_ATTR(_name) (strcmp(attr->attr.name, #_name) == 0) // ina260 average modes list @@ -150,6 +151,22 @@ static ssize_t attr_store(struct kobject *_kobj, return count; } +static ssize_t attr_metric_show(struct kobject *_kobj, + struct kobj_attribute *attr, + char *buf) +{ + int rvalue; + struct client_data *cdata=container_of(_kobj,struct client_data,kobj); + + if(INA260_IS_ATTR(power)){ + if(ina260_read_register(cdata, INA260_REG_POWER,&rvalue)) + return -1; + return sprintf(buf, "%d.%d\n", INA260_LSB_POWER*rvalue/1000,(INA260_LSB_POWER*rvalue) % 1000); + } + + return -1; +} + static ssize_t attr_field_show(struct kobject *_kobj, struct kobj_attribute *attr, char *buf) @@ -339,6 +356,17 @@ static const struct attribute_group registers_group = { .attrs = registers_attrs, .name = "registers" }; +// ----- Metrics ----- +static struct kobj_attribute metric_power_attribute = + __ATTR(power, 0664, attr_metric_show, NULL); +static struct attribute *metrics_attrs[] = { + &metric_power_attribute.attr, + NULL, +}; +static const struct attribute_group metrics_group = { + .attrs = metrics_attrs, + .name = "metrics" +}; // ----- Fields ----- static struct kobj_attribute reset_field_attribute = __ATTR(reset, 0664, attr_field_show, attr_field_store); @@ -446,6 +474,7 @@ static int ina260_probe_new(struct i2c_client *client){ i2c_set_clientdata(client,p); // Setup sysfs groups: if(sysfs_create_group(&p->kobj,®isters_group)|| + sysfs_create_group(&p->kobj,&metrics_group)|| sysfs_create_group(&p->kobj,&fields_group)){ kobject_put(&p->kobj); kfree(p); |