app/inc/modbus_rtu_slave.h

#ifndef _MODBUS_RTU_SLAVE_H
#define _MODBUS_RTU_SLAVE_H

//J24.1 J24.2 ===> A-B
#define MODBUS_RTU_SERIAL  "/dev/ttymxc1"  
#define MODBUS_RTU_BAUD    38400
#define SERVER_ID  1
#define TYPE_MONITOR 0X000F
#define MODBUS_REGS_NUM 300

extern uint16_t sjzd_modbus_data[MODBUS_REGS_NUM];

int modbus_rtu_slave_init(void);
void modbus_rtu_data_fresh(void *data,int is_new);
#endif