* Get reference temperature value
*
* First initially uc_get_rate_by_name is tried. At the startup due to
- * nondeterministic
- * order the temperature may not be read yet (then it fails and first measurment
- * gives
- * only absolute air pressure reading which is acceptable). Once it succedes
- * (should be
- * second measurement at the latest) we use average of few last readings from
- * uc_get_history_by_name. It may take few readings to start filling so again we
- * use
- * uc_get_rate_by_name as a fallback.
+ * nondeterministic order the temperature may not be read yet (then it fails and
+ * first measurment gives only absolute air pressure reading which is
+ * acceptable). Once it succedes (should be second measurement at the latest) we
+ * use average of few last readings from uc_get_history_by_name. It may take few
+ * readings to start filling so again we use uc_get_rate_by_name as a fallback.
* The idea is to use basic "noise" filtering (history averaging) across all the
- * values
- * which given sensor provides (up to given depth). Then we get minimum among
- * the sensors.
+ * values which given sensor provides (up to given depth). Then we get minimum
+ * among the sensors.
*
* @param result where the result is stored. When not available NAN is stored.
*
avg_num = 0;
/* First time need to read current rate to learn how many values are
- there (typically for temperature it would be just one).
- We do not expect dynamic changing of number of temperarure values
- in runtime yet (are there any such cases?). */
+ there (typically for temperature it would be just one). We do not expect
+ dynamic changing of number of temperarure values in runtime yet (are
+ there any such cases?). */
if (!list->initialized) {
if (uc_get_rate_by_name(list->sensor_name, &values, &values_num)) {
DEBUG(
*/
static int MPL115_detect(void) {
__s32 res;
- char errbuf[1024];
if (ioctl(i2c_bus_fd, I2C_SLAVE_FORCE, MPL115_I2C_ADDRESS) < 0) {
ERROR("barometer: MPL115_detect problem setting i2c slave address to "
"0x%02X: %s",
- MPL115_I2C_ADDRESS, sstrerror(errno, errbuf, sizeof(errbuf)));
+ MPL115_I2C_ADDRESS, STRERRNO);
return 0;
}
int8_t sic12MSB, sic12LSB, sic11MSB, sic11LSB, sic22MSB, sic22LSB;
int16_t sia0, sib1, sib2, sic12, sic11, sic22;
- char errbuf[1024];
-
res = i2c_smbus_read_i2c_block_data(i2c_bus_fd, MPL115_ADDR_COEFFS,
STATIC_ARRAY_SIZE(mpl115_coeffs),
mpl115_coeffs);
if (res < 0) {
- ERROR("barometer: MPL115_read_coeffs - problem reading data: %s",
- sstrerror(errno, errbuf, sizeof(errbuf)));
+ ERROR("barometer: MPL115_read_coeffs - problem reading data: %s", STRERRNO);
return -1;
}
int conv_temperature;
double adc_pressure;
double adc_temperature;
- char errbuf[1024];
*pressure = 0.0;
*temperature = 0.0;
if (retries > 0) {
ERROR("barometer: MPL115_read_averaged - requesting conversion: %s, "
"will retry at most %d more times",
- sstrerror(errno, errbuf, sizeof(errbuf)), retries);
+ STRERRNO, retries);
} else {
ERROR("barometer: MPL115_read_averaged - requesting conversion: %s, "
"too many failed retries",
- sstrerror(errno, errbuf, sizeof(errbuf)));
+ STRERRNO);
return -1;
}
}
if (retries > 0) {
ERROR("barometer: MPL115_read_averaged - reading conversion: %s, "
"will retry at most %d more times",
- sstrerror(errno, errbuf, sizeof(errbuf)), retries);
+ STRERRNO, retries);
} else {
ERROR("barometer: MPL115_read_averaged - reading conversion: %s, "
"too many failed retries",
- sstrerror(errno, errbuf, sizeof(errbuf)));
+ STRERRNO);
return -1;
}
}
*/
static int MPL3115_detect(void) {
__s32 res;
- char errbuf[1024];
if (ioctl(i2c_bus_fd, I2C_SLAVE_FORCE, MPL3115_I2C_ADDRESS) < 0) {
ERROR("barometer: MPL3115_detect problem setting i2c slave address to "
"0x%02X: %s",
- MPL3115_I2C_ADDRESS, sstrerror(errno, errbuf, sizeof(errbuf)));
+ MPL3115_I2C_ADDRESS, STRERRNO);
return 0;
}
__s32 ctrl;
__u8 data[MPL3115_NUM_CONV_VALS];
long int tmp_value = 0;
- char errbuf[1024];
/* Set Active - activate the device from standby */
res = i2c_smbus_read_byte_data(i2c_bus_fd, MPL3115_REG_CTRL_REG1);
if (res < 0) {
- ERROR("barometer: MPL3115_read - cannot read CTRL_REG1: %s",
- sstrerror(errno, errbuf, sizeof(errbuf)));
+ ERROR("barometer: MPL3115_read - cannot read CTRL_REG1: %s", STRERRNO);
return 1;
}
ctrl = res;
res = i2c_smbus_write_byte_data(i2c_bus_fd, MPL3115_REG_CTRL_REG1,
ctrl | MPL3115_CTRL_REG1_SBYB);
if (res < 0) {
- ERROR("barometer: MPL3115_read - problem activating: %s",
- sstrerror(errno, errbuf, sizeof(errbuf)));
+ ERROR("barometer: MPL3115_read - problem activating: %s", STRERRNO);
return 1;
}
res = i2c_smbus_read_byte_data(i2c_bus_fd, MPL3115_REG_STATUS);
if (res < 0) {
ERROR("barometer: MPL3115_read - cannot read status register: %s",
- sstrerror(errno, errbuf, sizeof(errbuf)));
+ STRERRNO);
return 1;
}
res = i2c_smbus_read_byte_data(i2c_bus_fd, MPL3115_REG_STATUS);
if (res < 0) {
ERROR("barometer: MPL3115_read - cannot read status register: %s",
- sstrerror(errno, errbuf, sizeof(errbuf)));
+ STRERRNO);
return 1;
}
}
res = i2c_smbus_read_i2c_block_data(i2c_bus_fd, MPL3115_REG_OUT_P_MSB,
MPL3115_NUM_CONV_VALS, data);
if (res < 0) {
- ERROR("barometer: MPL3115_read - cannot read data registers: %s",
- sstrerror(errno, errbuf, sizeof(errbuf)));
+ ERROR("barometer: MPL3115_read - cannot read data registers: %s", STRERRNO);
return 1;
}
static int MPL3115_init_sensor(void) {
__s32 res;
__s8 offset;
- char errbuf[1024];
/* Reset the sensor. It will reset immediately without ACKing */
/* the transaction, so no error handling here. */
res = i2c_smbus_write_byte_data(i2c_bus_fd, MPL3115_REG_OFF_T, offset);
if (res < 0) {
ERROR("barometer: MPL3115_init_sensor - problem setting temp offset: %s",
- sstrerror(errno, errbuf, sizeof(errbuf)));
+ STRERRNO);
return -1;
}
if (res < 0) {
ERROR(
"barometer: MPL3115_init_sensor - problem setting pressure offset: %s",
- sstrerror(errno, errbuf, sizeof(errbuf)));
+ STRERRNO);
return -1;
}
MPL3115_PT_DATA_TDEF);
if (res < 0) {
ERROR("barometer: MPL3115_init_sensor - problem setting PT_DATA_CFG: %s",
- sstrerror(errno, errbuf, sizeof(errbuf)));
+ STRERRNO);
return -1;
}
mpl3115_oversample);
if (res < 0) {
ERROR("barometer: MPL3115_init_sensor - problem configuring CTRL_REG1: %s",
- sstrerror(errno, errbuf, sizeof(errbuf)));
+ STRERRNO);
return -1;
}
*/
static int BMP085_detect(void) {
__s32 res;
- char errbuf[1024];
if (ioctl(i2c_bus_fd, I2C_SLAVE_FORCE, BMP085_I2C_ADDRESS) < 0) {
ERROR("barometer: BMP085_detect - problem setting i2c slave address to "
"0x%02X: %s",
- BMP085_I2C_ADDRESS, sstrerror(errno, errbuf, sizeof(errbuf)));
+ BMP085_I2C_ADDRESS, STRERRNO);
return 0;
}
res = i2c_smbus_read_byte_data(i2c_bus_fd, BMP085_ADDR_VERSION);
if (res < 0) {
ERROR("barometer: BMP085_detect - problem checking chip version: %s",
- sstrerror(errno, errbuf, sizeof(errbuf)));
+ STRERRNO);
return 0;
}
DEBUG("barometer: BMP085_detect - chip version ML:0x%02X AL:0x%02X",
static int BMP085_read_coeffs(void) {
__s32 res;
__u8 coeffs[BMP085_NUM_COEFFS];
- char errbuf[1024];
res = i2c_smbus_read_i2c_block_data(i2c_bus_fd, BMP085_ADDR_COEFFS,
BMP085_NUM_COEFFS, coeffs);
if (res < 0) {
- ERROR("barometer: BMP085_read_coeffs - problem reading data: %s",
- sstrerror(errno, errbuf, sizeof(errbuf)));
+ ERROR("barometer: BMP085_read_coeffs - problem reading data: %s", STRERRNO);
return -1;
}
long adc_pressure;
long adc_temperature;
- char errbuf[1024];
-
/* start conversion of temperature */
res = i2c_smbus_write_byte_data(i2c_bus_fd, BMP085_ADDR_CTRL_REG,
BMP085_CMD_CONVERT_TEMP);
if (res < 0) {
ERROR("barometer: BMP085_read - problem requesting temperature conversion: "
"%s",
- sstrerror(errno, errbuf, sizeof(errbuf)));
+ STRERRNO);
return 1;
}
i2c_smbus_read_i2c_block_data(i2c_bus_fd, BMP085_ADDR_CONV, 2, measBuff);
if (res < 0) {
ERROR("barometer: BMP085_read - problem reading temperature data: %s",
- sstrerror(errno, errbuf, sizeof(errbuf)));
+ STRERRNO);
return 1;
}
bmp085_cmdCnvPress);
if (res < 0) {
ERROR("barometer: BMP085_read - problem requesting pressure conversion: %s",
- sstrerror(errno, errbuf, sizeof(errbuf)));
+ STRERRNO);
return 1;
}
i2c_smbus_read_i2c_block_data(i2c_bus_fd, BMP085_ADDR_CONV, 3, measBuff);
if (res < 0) {
ERROR("barometer: BMP085_read - problem reading pressure data: %s",
- sstrerror(errno, errbuf, sizeof(errbuf)));
+ STRERRNO);
return 1;
}
* @return Zero when successful.
*/
static int collectd_barometer_init(void) {
- char errbuf[1024];
DEBUG("barometer: collectd_barometer_init");
if (i2c_bus_fd < 0) {
ERROR("barometer: collectd_barometer_init problem opening I2C bus device "
"\"%s\": %s (is loaded mod i2c-dev?)",
- config_device, sstrerror(errno, errbuf, sizeof(errbuf)));
+ config_device, STRERRNO);
return -1;
}