The name I2C-Bus translates into "Inter Integrated Circuit-Bus". Sometimes the bus is called I2C, IIC or I²C-bus.
The I²C–Bus allows easy communication between components on the same circuit board or components which are linked via cable.
The most significant features are that there are only two bus lines required. It's based on a simple master/slave relationship between all components. Each device is addressed by an unique address.
Simplicity and flexibility are key characteristics that make this bus attractive to many applications.
Two use the libraries you have to implement the following functions:
void setSDA_HIGH(); // set SDA line to high
void setSDA_LOW(); // set SDA line to low
void setSCL_HIGH(); // set SCL line to high
void setSCL_LOW(); // set SCL line to low
void setPULLUP(true); // set SDA line to input
void setPULLUP(false); // set both SDA & SCL to output (important to set both!)
bool getSDAValue(); // returns current value on SDA line
void i2cbus_delay_us(int); // call a delay function
// @param Integer delay-time in msbool lcd_display_send_byte(int); // call the transmitter function in here
// @param Integer address (8-Bit)
// @return Integer (1 -> ack, 0 -> transfer fails)
void lcd_display_delay_ms(int); // call a delay function
// @param Integer delaytime in ms
- Mikrocontroller ATMEGA2560
- Development Board: NTK600
- LCD-Display, type HD44780 (4-Bit-Mode)
- Oscilloscope
We're thrilled that you'd like to contribute to this project. Your help is essential for keeping it great.
In general, contributors should develop on branches based off of master and pull requests should be to master.
This project is under the MIT License. See the MIT License file for the full license text.
Please consider the I2C-Bus License.