Overwrite default values to match other antenna configuration

[ELV-Elektronik-AG]

Hi,

to use the lib with the ELV-BM-TRX1 module, some default values have to be changed to match the hardware/antenna configuration.
Please add a preprocessor directive to overwrite the defines with own values or is there a other solution to use custom values?

in radio_conf.h
#define XTAL_DEFAULT_CAP_VALUE ( 0x20UL )

replace with
#ifndef XTAL_DEFAULT_CAP_VALUE
#define XTAL_DEFAULT_CAP_VALUE ( 0x20UL )
#endif /* XTAL_DEFAULT_CAP_VALUE */

if RegionEU868.h
#define EU868_TX_MAX_DATARATE DR_7
#define EU868_RX_MAX_DATARATE DR_7
#define EU868_DEFAULT_ANTENNA_GAIN 2.15f

replace with
#ifndef EU868_TX_MAX_DATARATE
#define EU868_TX_MAX_DATARATE DR_7
#endif /* EU868_TX_MAX_DATARATE */

#ifndef EU868_RX_MAX_DATARATE
#define EU868_RX_MAX_DATARATE DR_7
#endif /* EU868_RX_MAX_DATARATE*/

#ifndef EU868_DEFAULT_ANTENNA_GAIN
#define EU868_DEFAULT_ANTENNA_GAIN 2.15f
#endif /* EU868_DEFAULT_ANTENNA_GAIN */

Maybe for other hardware more values have to be changeable, but for the ELV-BM-TRX1 module only these values are important.