1 files changed, 7 insertions, 3 deletions
diff --git a/drivers/avr/i2c_slave.h b/drivers/avr/i2c_slave.h
index 3fda7f8c09..1c3b9ecc00 100755
--- a/drivers/avr/i2c_slave.h
+++ b/drivers/avr/i2c_slave.h
@@ -8,12 +8,16 @@
 #ifndef I2C_SLAVE_H
 #define I2C_SLAVE_H
 
+#define TX_BUFFER_SIZE 30
+#define RX_BUFFER_SIZE 30
+
 volatile uint8_t buffer_address;
-volatile uint8_t txbuffer[0xFF];
-volatile uint8_t rxbuffer[0xFF];
+static volatile bool slave_has_register_set = false;
+volatile uint8_t txbuffer[TX_BUFFER_SIZE];
+volatile uint8_t rxbuffer[RX_BUFFER_SIZE];
 
 void i2c_init(uint8_t address);
 void i2c_stop(void);
 ISR(TWI_vect);
 
-#endif // I2C_SLAVE_H
+#endif // I2C_SLAVE_H
+\ No newline at end of file