Initialisation hints

Depending on a selected platform, the initialization routine might vary. The function optiga_init() should be called before any call to Crypt API or Util API Below is an examples which work for most of platforms:

#include "optiga/optiga_util.h"
#include "optiga/ifx_i2c/ifx_i2c_config.h"

/* The communication context `ifx_i2c_context_0` is declared in the header file ifx_i2c_config.h */
optiga_comms_t optiga_comms = {(void*)&ifx_i2c_context_0,NULL,NULL, OPTIGA_COMMS_SUCCESS};

static int32_t optiga_init(void)
{
    int32_t status = (int32_t) OPTIGA_LIB_ERROR;

    do
    {
        /* Optionally you might need to initialize some of the Trust X PAL functions. If you have them implemented
           In this case they should be declared as extern.
           pal_gpio_init();
           pal_os_event_init();
        */
        status = optiga_util_open_application(&optiga_comms);
        if(OPTIGA_LIB_SUCCESS != status)
        {
            printf( ("Failure: CmdLib_OpenApplication(): 0x%04X\n\r", status) );
            break;
        }

        status = OPTIGA_LIB_SUCCESS;
    } while(0);

    return status;
}