Library Description

This library allows user to perform a control of the GNSS ZOE click board. Also user can check the indication status from the charger to get charging state. Fault condition also can be checked. For more details check documentation.

Key functions:

• void gnsszoe_spi_get( uint8_t * register_buffer, uint16_t number_of_registers ) - gets specified number of register values and stores those values into register buffer.
• uint8_t gnsszoe_uart_get( void ) - receives bytes via UART.
• void gnsszoe_i2c_get( uint8_t register_address, uint8_t * register_buffer, uint16_t number_of_registers ) - gets specified number of register values and stores those values into register buffer.

Examples description

The application is composed of three sections :

• System Initialization - Initializes GPIO pins, SPI, UART, I2C and LOG modules.
• Application Initialization - Initializes SPI, UART, I2C driver and resets the device .
• Application Task - Executes gnsszoe_task() function.

void gnsszoe_task( )
{
    if (communication_module == _GNSSZOE_MODULE_SPI)
    {
        gnsszoe_spi_capture( );
    }
    else if (communication_module == _GNSSZOE_MODULE_UART)
    {
        gnsszoe_uart_capture( );
    }
    else if (communication_module == _GNSSZOE_MODULE_I2C)
    {
        gnsszoe_i2c_capture( );
    }
    else
    {
        mikrobus_logWrite( "> Setup error", _LOG_LINE );
    }
    gnsszoe_parse( );
}

Additional Functions :

• gnsszoe_spi_capture() - Captures message bytes via SPI interface
• gnsszoe_wait_for_uartReady() - Waits for UART ready indication
• gnsszoe_uart_capture() - Captures message bytes via UART interface
• gnsszoe_i2c_capture() - Captures message bytes via I2C interface
• gnsszoe_parse() - Parses received message
• gnsszoe_task() - Executes gnsszoe_xxx_capture() and gnsszoe_parse() functions

Other mikroE Libraries used in the example:

• SPI
• I2C
• UART
• Conversionst

Additional notes and informations

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.