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drivers: sensor: tmp114: Add support for OVERSAMPLING attr

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Tmp114 has an average function, according to the datasheet this is
default disabled. Add attribute to enable this feature.

Signed-off-by: Fredrik Gihl <fgihl@hotmail.com>
This commit is contained in:
Fredrik Gihl 2024-07-19 14:02:23 +02:00 committed by Anas Nashif
parent fc770b757c
commit 9eaf488907
1 changed files with 43 additions and 0 deletions
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43
drivers/sensor/ti/tmp114/tmp114.c
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@ -27,6 +27,7 @@ LOG_MODULE_REGISTER(TMP114, CONFIG_SENSOR_LOG_LEVEL);
#define TMP114_DEVICE_ID 0x1114
#define TMP114_ALERT_DATA_READY BIT(0)
#define TMP114_AVG_MASK BIT(7)
struct tmp114_data {
uint16_t sample;
@ -52,6 +53,15 @@ static int tmp114_reg_read(const struct device *dev, uint8_t reg,
return 0;
}
static int tmp114_reg_write(const struct device *dev, uint8_t reg,
uint16_t val)
{
const struct tmp114_dev_config *cfg = dev->config;
uint8_t tx_buf[3] = {reg, val >> 8, val & 0xFF};
return i2c_write_dt(&cfg->bus, tx_buf, sizeof(tx_buf));
}
static inline int tmp114_device_id_check(const struct device *dev, uint16_t *id)
{
if (tmp114_reg_read(dev, TMP114_REG_DEVICE_ID, id) != 0) {
@ -155,8 +165,41 @@ static int tmp114_attr_get(const struct device *dev, enum sensor_channel chan,
return 0;
}
static int tmp114_attr_set(const struct device *dev,
enum sensor_channel chan,
enum sensor_attribute attr,
const struct sensor_value *val)
{
int16_t value;
int rc;
if (chan != SENSOR_CHAN_AMBIENT_TEMP) {
return -ENOTSUP;
}
switch (attr) {
case SENSOR_ATTR_OVERSAMPLING:
/* Enable the AVG in tmp114. The chip will do 8 avg of 8 samples
* to get a more accurate value.
*/
rc = tmp114_reg_read(dev, TMP114_REG_CFGR, &value);
if (rc < 0) {
return rc;
}
value = value & ~TMP114_AVG_MASK;
if (val->val1) {
value |= TMP114_AVG_MASK;
}
return tmp114_reg_write(dev, TMP114_REG_CFGR, value);
default:
return -ENOTSUP;
}
}
static const struct sensor_driver_api tmp114_driver_api = {
.attr_get = tmp114_attr_get,
.attr_set = tmp114_attr_set,
.sample_fetch = tmp114_sample_fetch,
.channel_get = tmp114_channel_get
};