Library Description

Library initializes and defines I2C bus driver and driver functions which offer a choice to write data in registers and to read data from registers. The library includes the function for sets positive and negative output voltage and function for enable chip. The user has to set a positive voltage from 3200mV to 12750mV with a step of 50mV and set the negative voltage from -1200mV to -13950mV with a step of 50mV.

Key functions :

• void boostinv_setPositiveVoltage(uint16_t voltage) - Functions which set the positive output voltage
• void boostinv_setNegativeVoltage(int16_t voltage) - Functions which set the negative output voltage
• void boostinv_enable() - Functions for enable chip

Example description

The application is composed of three sections :

• System Initialization - Initializes I2C module and sets the RST pin as the OUTPUT
• Application Initialization - Initializes the Driver, enables chip and selects programming registers
• Application Task - (code snippet) - Changes the positive and negative output voltage. Positive output voltage goes from 3200mV to 12750mV with a step of 50mV Negative output voltage goes from -1200mV to -13950mV with a step of 50mV

void applicationTask()
{
// Sets Positive output voltage
 Positive_Vout = 3200;
 boostinv_setPositiveVoltage(Positive_Vout);
 Delay_ms( 5000 );
 Positive_Vout = 7750;
 boostinv_setPositiveVoltage(Positive_Vout);
 Delay_ms( 5000 );
 Positive_Vout = 12000;
 boostinv_setPositiveVoltage(Positive_Vout);
 Delay_ms( 5000 );
 Positive_Vout = 7750;
 boostinv_setPositiveVoltage(Positive_Vout);
 Delay_ms( 5000 );
// Sets Negative output voltage
 Negative_Vout = -1450;
 boostinv_setNegativeVoltage(Negative_Vout);
 Delay_ms( 5000 );
 Negative_Vout = -6700;
 boostinv_setNegativeVoltage(Negative_Vout);
 Delay_ms( 5000 );
 Negative_Vout = -11050;
 boostinv_setNegativeVoltage(Negative_Vout);
 Delay_ms( 5000 );
 Negative_Vout = -6700;
 boostinv_setNegativeVoltage(Negative_Vout);
 Delay_ms( 5000 );
}

Other mikroE Libraries used in the example:

• I2C

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.