christophs70 / cp2112_demo

Demo code for reading SMBus battery parameters using the Silicon Labs CP2112 board.

cp2112_demo

• Ensure SDA and SCL lines are pulled-up to a voltage which is compatible with that of the target battery interface.
• Setting J7=VIO pulls up the bus to 3.3V - this should be compatible with the majority of applications.
• If you require a different bus voltage:
  • Set J7=EXT_PU and connect TB1(EXT_PU) to the battery interface voltage.

Program Output:

Device successfully opened.
Device successfully configured.
Voltage = 16403 mV
Current = 74 mA
RSOC = 97 %
Remaining Capacity = 5709 mAh
Average Time to Empty = 738 min(s)
Manufacturer Name = INSPIREDE
Charger connected.
Done! Exiting...

Tools/Environment:

• Silicon Labs CP2112EK: http://www.silabs.com/products/interface/Pages/CP2112EK.aspx
• Texas Instruments bq20z65-R1 Gas Gauge: http://www.ti.com/product/bq20z65-r1
• Windows 8.1 Professional 64-bit
• Visual Studio 2013 (Version 12.0.30501.00 Update 2)