chuangzhu / avr

Atmel 8bit MCU chips (AVR) libraries, based on ATmega48/88/168/328(P).

Atmel 8bit MCUs (AVR) Libraries

Based on ATmega48/88/168/328(P), may not perform properly on other chips.

Usage

Every folder contains files named like: main.c HAL_ADC.c DEV_ADXL345.c APP_Clock.h, copy these .h & .c files except main.c to your project.

USART

The USART serial hardware abstract library, normally used to transfer data with Computers.
You should define the frequency of crystal F_CPU and BAUD at Project> Properties> Toolchain> AVR/GNU C Complier> Symbols (Don't include whitespaces) like this:

F_CPU=8000000

ADC

The Analog-Digital-Converter hardware abstract library.

Clock

The Clock application library, employs TIMER1 to count time 1 second per tick.
You should define the frequency of crystal at Project> Properties> Toolchain> AVR/GNU C Complier> Symbols.

TIMER

The TIMER0&2 hardware abstract library, uses macro to calculate TCCRxB and TCNTx for TIMER0 and TIMER2 with the period you set.
This library contains only a .h file.
You should define the frequency of crystal F_CPU, TIMER0_Period and TIMER2_Period (unit: microsecond μs) at Project> Properties> Toolchain> AVR/GNU C Complier> Symbols.

TWI

The TWI (IIC, I²C) hardware abstract library.

ADXL345

The ADXL345 acceleration sensor device library. Based on TWI library.

License

This library is licensed under MIT, a really permissive license. Feel free to clone, contribute, or use it to your project for either non-commercial or commercial purpose.