AVR458 Charging Li-Ion Batteries with ATAVRBC100 Documentation
This documents the software for application note AVR458. This is a charger for Li-Ion batteries, based on ATAVRBC100.
This software was compiled with IAR Embedded Workbench, 4.30. To use GCC the source have to be modified.
To make project on IAR EWAVR:
Add the .c files to project (
ADC.c,
battery.c,
main.c,
menu.c,
OWI.c,
PWM.c,
time.c and
USI.c). Add either
LIIONcharge.c or NIMHcharge.c, and update
LIIONspecs.h or NIMHspecs.h, and
battery.h with the appropriate battery data if needed.
Use device --cpu=tiny861, enable bit definitions in I/O include files, optimization low for debug target and high for release, output format: ubrof8 for Debug and intel_extended for Release.
This application is based on the ATtiny 861, but it is possible to migrate the design to other AVR microcontrollers, such as pin-compatible devices ATtiny 261/461. Low pin count devices such as ATtiny 25/45/85 may also be used, but with reduced functionality.
Required fuse bit settings:
FUSE BIT | SETTING
----------+--------------------
CKDIV8 | 1 (unprogrammed)
CKSEL3..0 | 0010 (internal osc)
- Todo:
- Finalize master-slave communication protocol
- Implement discharge mode
For more info about Atmel AVR visit
http://www.atmel.com/products/AVR/
For application notes visit
http://www.atmel.com/dyn/products/app_notes.asp?family_id=607
Support mail:
avr@atmel.com