IIO Temperature Module streaming example
pi@raspberrypi:~ $ iio_temp_mod -h
Usage: iio_temp_mod [-v] [-n] <count> -u <uri> <config-file>
Options:
-u Use the context at the provided URI.
-n Capture n samples at the time
-v Verbose information
Example:
iio_temp_mod -v -u serial:/dev/ttyAMA0,38400n8 defaultConfig.json- Simple Build Instructions
- Depends on: libiio, libjson0-dev
git clone https://github.com/analogdevicesinc/iio-temp-mod.git
cd iio-temp-mod
make
sudo make install- Automated Build and Setup Script for Raspberry PI / Raspbian
- Download NOOBS (NOOBS_v2_0_0.zip) and install Raspbian GNU/Linux 8 (jessie)
- Open Terminal CTRL-ALT-T
- Type following commands:
pi@raspberrypi:~ $ wget -N https://raw.githubusercontent.com/analogdevicesinc/iio-temp-mod/master/rpi_setup.sh
pi@raspberrypi:~ $ chomd +x rpi_setup.sh
pi@raspberrypi:~ $ ./rpi_setup.sh-
Example: iio_temp_mod
Depending on the version of the Raspberry PI you're using the serial port tty is either ttyAMA0 or ttyS0
pi@raspberrypi:~ $ iio_temp_mod -v -u serial:/dev/ttyAMA0,38400n8 iio-temp-mod/defaultConfig.json
TEMP_MODULE-1 Version: 1.2
DEV [TemperatureUnit] = Celsius
DEV [OperationalMode] = ContinuousConversion
DEV [PowerMode] = Low
DEV [FilterType] = FIR
DEV [FirFrequency] = 25SPS
CH thermocouple [SensorType] = T-Type
CH thermocouple [Gain] = 64
CH thermocouple [VBiasEnable] = 0
CH thermocouple [TemperatureMin] = -200
CH thermocouple [TemperatureMax] = 400
CH cold_junction [Sensor] = RTD3Wire
CH cold_junction [SensorType] = PT100
CH cold_junction [Gain] = 32
CH cold_junction [ExcitationCurrent] = 500
CH cold_junction [ReferenceResistor] = 5110
CJC-Temp, TC-Temp
-242.020004, -243.970459
-242.020004, -243.976624
-242.020004, -243.919678
-242.020004, -243.948090
-242.020004, -243.955719
-242.020004, -243.911011
-242.020004, -243.904907
-242.020004, -243.909973
-242.020004, -243.966888
-242.020004, -243.933289
-242.020004, -243.944275- Example: iio_info
pi@raspberrypi:~ $ iio_info -u serial:/dev/ttyAMA0,38400n8
Library version: 0.8 (git tag: bb70e40)
Compiled with backends: local xml network serial
IIO context created with serial backend.
Backend version: 0.1 (git tag: v0.1 )
Backend description string: /dev/ttyAMA0: ttyAMA0
IIO context has 1 devices:
iio:device0: TEMP_MODULE (buffer capable)
2 channels found:
temp0: cold_junction (input, index: 0, format: le:S32/32>>0)
7 channel-specific attributes found:
attr 0: Sensor value: RTD3Wire
attr 1: SensorType value: pt100
attr 2: Gain value: 32
attr 3: ExcitationCurrent value: 500
attr 4: ReferenceResistor value: 5110
attr 5: TemperatureMax value: 125
attr 6: TemperatureMin value: -40
temp1: thermocouple (input, index: 1, format: le:S32/32>>1)
6 channel-specific attributes found:
attr 0: Sensor value: Thermocouple
attr 1: SensorType value: T
attr 2: Gain value: 64
attr 3: VBiasEnable value: 0
attr 4: TemperatureMin value: -200
attr 5: TemperatureMax value: 400
6 device-specific attributes found:
attr 0: PowerMode value: Low
attr 1: OperationalMode value: Continuous
attr 2: FilterType value: FIR
attr 3: FirFrequency value: 25SPS
attr 4: FS value: 384
attr 5: TemperatureUnit value: Celsius
1 debug attributes found:
debug attr 0: direct_reg_access value: 16