瑞萨单片机i^2c总线

#ifndefI2C_H#defineI2C_H#definesda(P1.1)#definescl(P1.0)voidi2c_delay(unsignedchari);voidi2c_start(void);voidi2c_stop(void);voidi2c_sendbyte(unsignedcharbyt);unsignedchari2c_waitack(void);unsignedchari2c_receivebyte(void);voidi2c_sendack(unsignedcharackbit);voidwrite_eeprom(unsignedcharadd,unsign