No need to. SS is already defined as 53 when you are compiling for Mega:
#define PIN_SPI_SS (53)
static const uint8_t SS = PIN_SPI_SS;
No need to. SS is already defined as 53 when you are compiling for Mega:
#define PIN_SPI_SS (53)
static const uint8_t SS = PIN_SPI_SS;