Library Description

Key functions

void pixi_writeRegister(uint8_t registerAddress , uint16_t registerData) - Generic function for writing to registers.

uint16_t pixi_readRegister(uint8_t registerAddress)- Generic function for reading from registers.

Examples Description

Simple example of LED blinking off all PIXI™ click pins, ports are configured by writing messages to the appropriate registers via the SPI interface. The low-level communication is taken care of inside the MikroElektronika functions. Registers can be easily accessed with two simple functions:

pixi_writeRegister is the register writing function, which accepts two parameters. The first parameter of the function is the 8bit register that needs to be written, while the second parameter is the 16bit data that is written to the register provided with the first parameter. This function does not return any value

pixi_readRegister is used to read the content of a certain register, which is forwarded as an 8bit parameter. This function returns 16bit data which represents the contents of the register, forwarded as the parameter.

The simple application example periodically sets all the GPIO pins to 5V and then to 0V, with one second delay. More information about the registers and their functions can be found in the MAX11300 datasheet.

void applicationTask()
{
    pixi_writeRegister(0x0D, 0xFFFF); //setting all GPIO to 5V
    pixi_writeRegister(0x0E, 0x000F);
    Delay_ms(1000);
    pixi_writeRegister(0x0D, 0x0000); //setting all GPIO to 0V
    pixi_writeRegister(0x0E, 0x0000);
    Delay_ms(1000);
}

Other mikroE Libraries used in the example:

• SPI

Additional notes and information

Depending on the development board you are using, you may need USB UART click,  USB UART 2 click or  RS232 click to connect to your PC, for development systems with no UART to USB interface available on the board. The terminal available in all MikroElektronika compilers, or any other terminal application of your choice, can be used to read the message.