#define AUX_LINE_PORT PORTB
#define AUX_LINE_PIN PINB
#define AUX_LINE_DDR DDRB
- #define AUX_LINE_MASK (1 << 4)
+ #if (BOARD == BOARD_U2S)
+ #define AUX_LINE_MASK (1 << 0)
+ #else
+ #define AUX_LINE_MASK (1 << 4)
+ #endif
#define ENABLE_ISP_PROTOCOL
#define ENABLE_XPROG_PROTOCOL