ecomet_i2c_raspberry_tools

Last modification: 24.09.2024 Contributor: Marian Minar

Dont forget to add if you were satisfy with the software!

Twitter: News and statuses

NEW! SourceForge.net:

• Oscilloscope-like application eCScope for Raspberry PI 3+ (32bit Raspbian) based on INA260 chips and built with the Ecomet-i2c-sensors Python library.

Project eCScope was created to show progress in development. Insert the #eCScope keyword into the issue section.

PyPi module: ecomet-i2c-sensor

Current release: 0.1.8

New features

• AXP209 driver added (X-Powers)
• TSL25911 driver added (Osram-AMS)
• add i2c_interface parameter as switch for libraries Adafruit_PureIO or smbus2
• Add Allwiner CPU A10 driver, olimex OLinuXino A10 update load_config_yaml

pip install ecomet-i2c-sensors

Test release: 0.1.9.post3

• AS3935 driver added (Sciosens)
• SGP40 driver added (Sensirion)
• MCP3221 driver added (Microchip)
• MCP3221 added feature for convert measured number to range or 360 degree, or cardinal points
• Fixes in PCA9632, prepared for multiple chips at I2C bus
• HDC1080 driver mainly code rewritten, different methon calls

pip3 install -i https://test.pypi.org/simple/ecomet-i2c-sensors

Wiki Hardware prototypes boards: link

Scope: The Driver for I2C Chip maintenance from Raspberry PI 1B+ and above and AllWinner CPU. This code tools contains python & free pascal code focused to I2C communication of raspberry pi with IOT modules.

• tested at Raspberry PI 1B+, 3B+, 4B+, 4CM
• tested at AllWinner CPU H616, mangopi MCore-H616, Orange PI Zero2

Current CHIP maintained:

• AMS-ScioSense AS3935
• AMS-OSRAM TSL25911
• EEPROM Chip 24c01,24c02,24c04,24c08,24c16,24c32,24c64,24c128,24c256,24c512,24c1024
• Measurement Specialties, TE Connectivity MS5637,HTU21D
• Microchip EMC2301, MCP3221
• NXP Semiconductor PCA9632 (could be modified for PCA9624,PCA9635PW,PCA9685,PCA9955B,PCA9956B) PCA9557
• Panasonic SN-GCJA5
• Renesas ISL28022
• Sensirion SGP40
• Solomon Systech SSD1309
• Texas Instruments HDC1080,PCA9557,INA226,INA260
• X-Powers AXP209

List of modules:

• AS3935 -> !NEW! Franklin Lightning Sensor
• AXP209 -> PMU (Power Management Unit) Sensor
• EEPROM module -> EEPROM read/write 24cXXX chips
• EMC2301 module -> Fan controller with a PWM fan driver
• HDC1080 module -> High Accuracy Digital Humidity Sensor with Temperature Sensor
• HTU21D module -> Digital Relative Humidity sensor with Temperature output, calculation of Dew Point
• INA226,INA260 module -> Precision Digital Current and Power Monitor With Low-Drift, Precision Integrated Shunt
• ISL2802x module -> will be added python module description
• MCP3221 module -> !NEW! Low-Power 12-Bit A/D Converter
• MS5637 module -> Ultra-compact micro altimeter. Integrated digital pressure sensor (24 bit ΔΣ ADC), Operating range: 300 to 1200 mbar, -40 to +85 °C
• PCA9557 module -> Remote8-Bit I2C and SMBusLow-PowerI/O ExpanderWith Reset andConfigurationRegisters
• PCA9632 module -> 4-bit Fm+ I2C-bus low power LED driver (could be used for motor control)
• SGP40 module -> Indoor Air Quality Sensor for VOC Measurements
• SN-GCJA5 -> Laser Type PM Sensor
• SSD1306 module -> SSD1306 is a single-chip CMOS OLED/PLED driver with controller for organic / polymer light emitting diode dot-matrix graphic display system.
• TSL25911 -> Ambient Light Sensor

Software for Chips:

Setting of config file for ecomet-i2c-sensors python library:

Library is looking in directory ~/.comet for file config.yaml that contains i2c parameters for custom linux distribution and I2C EEPROM memory setting. Here is a example of config file content:

comet@orangepizero2:~/.comet $ cat config.yaml
--- # The I2C config file

i2c:
    smb: i2c-3 # set bus i2c-1
    smb_detect: 0..3 # list of monitored smb bus by i2cdetect
    eeprom:
      ic: '24c01'
      slaveaddr: 0x50
      writestrobe: 26 # hold pin low to write to eeprom
    sensor:
      ms5637:
        pressure:
          { min: 600, max: 1300 }
      sn_gcja5:
        PM1_0:
          { min: 0, max: 1200 }
        PM2_5:
          { min: 0, max: 1200 }
        PM10:
          { min: 0, max: 1200 }

Note: Currently only one eeprom chip could be added.

Alternative command for I2C chip detection:

Here is alternative command to i2cdetect for detection of active I2C chips at I2C bus: i2c_ecomet_detect.py

pi@raspberrypi:~/ecomet_i2c_raspberry_tools/bin $ python3 i2c_ecomet_detect.py
3.9.9 (main, Jan 16 2022, 22:51:22)
[GCC 11.2.0]
ecomet.Board_Platform: INFO     Start logging ...
ecomet.Board_Platform: INFO     Board platform: RASPBERRY_PI 4B:1.4
ecomet.Board_Platform: INFO     Number of I2C buses at the board: 2
ecomet_i2c_sensors.platform.i2c_platform: INFO     >>> Testing at bus: 0
ecomet_i2c_sensors.platform.i2c_platform: INFO     No Chip connected
ecomet_i2c_sensors.platform.i2c_platform: INFO     >>> Testing at bus: 1
ecomet_i2c_sensors.platform.i2c_platform: INFO     Default bus number: 1
ecomet_i2c_sensors.platform.i2c_platform: INFO     Identified Slaves Chips: 0xc:0x1a:0x2f:0x40:0x50:0x51:0x52:0x53:0x54:0x55:0x56:0x57:0x62:0x70:0x76

Requestor Interests: If you would like to reqest some new feature or add some new Chip at the development list let me know by adding issue or by email.