// ////////////////////////////////////////////
// Need Soft Serial defines in serial_config.h
// ////////////////////////////////////////////
// ex.
// #define SERIAL_PIN_DDR DDRD
// #define SERIAL_PIN_PORT PORTD
// #define SERIAL_PIN_INPUT PIND
// #define SERIAL_PIN_MASK _BV(PD?) ?=0,2
// #define SERIAL_PIN_INTERRUPT INT?_vect ?=0,2
// #define SERIAL_SLAVE_BUFFER_LENGTH MATRIX_ROWS/2
// #define SERIAL_MASTER_BUFFER_LENGTH MATRIX_ROWS/2
// Buffers for master - slave communication
extern volatile uint8_t serial_slave_buffer;
extern volatile uint8_t serial_master_buffer;
void ;
void ;
int ;
bool ;