/*
#include <packages/qmodbus/inc/modbus.h>
#include <packages/qmodbus/inc/modbus.h>
 * Copyright (c) 2006-2021, RT-Thread Development Team
 *
 * SPDX-License-Identifier: Apache-2.0
 *
 * Change Logs:
 * Date           Author       Notes
 * 2025-10-20     Administrator       the first version
 * 2025-11-12     Modified            Switch to IDLE interrupt mode (no DMA, no ringbuffer)
 * 2025-11-21     Fixed               Enable RX_IDLE mode correctly for RT-Thread 5.1
 */

#include "rtthread.h"
#include "modbus.h"

#define DBG_TAG "plc.rtu"
#define DBG_LVL DBG_LOG
#include <rtdbg.h>

static const mb_backend_param_t mb_bkd_prm = {
    .rtu.dev = "uart2",     //设备名
    .rtu.baudrate = 57600,   //波特率
    .rtu.parity = 0,        //校验位, 0-无, 1-奇, 2-偶
    .rtu.pin = -1,          //控制引脚, <0 表示不使用
    .rtu.lvl = 0            //控制发送电平
};

extern rt_int32_t sys_temperature;
extern rt_int32_t sys_humidity;
extern unsigned char sys_time[6];

static void mb_plc_read_regs(mb_inst_t *hinst)
{
    if (mb_connect(hinst) < 0)//连接失败, 延时返回
    {
        LOG_E("modbus connect fail.");
        return;
    }

    u16 regs[64];

    regs[0]=sys_temperature;//系统温度
    regs[1]=sys_humidity;//系统湿度
    for(int8_t i=0;i<=5;i++)//系统时间
    {
        regs[i+2] = sys_time[i];
    }

    int addr = 7000;
    int nb = 10;
    int total = mb_write_regs(hinst, addr, nb, regs);
    if (total <= 0)
    {
        return;
    }
    u8 regsM[64];
    int addrM = 3000;
    int nbM = 10;
    int totalM = mb_read_bits(hinst, addrM, nbM, regsM);
    if (totalM <= 0)
    {
        return;
    }
}

static void mb_plc_thread(void *args)//线程服务函数
{
    mb_inst_t *hinst = mb_create(MB_BACKEND_TYPE_RTU, &mb_bkd_prm);
    RT_ASSERT(hinst != NULL);

    mb_set_slave(hinst, 1);//修改从机地址, 默认地址为1, 可根据实际情况修改
    mb_set_prot(hinst, MB_PROT_RTU);//修改通信协议类型, RTU后端默认使用MODBUS-RTU通信协议
    mb_set_tmo(hinst, 500, 15);//修改超时时间, 应答超时500ms(默认300ms), 字节超时15ms(默认32ms)

    while(1)
    {
        mb_plc_read_regs(hinst);
        rt_thread_mdelay(50);
    }
}

static int mb_rtu_master_startup(void)
{
    rt_thread_t tid = rt_thread_create("plc_rtu", mb_plc_thread, NULL, 2048, 5, 20);
    RT_ASSERT(tid != NULL);
    rt_thread_startup(tid);
    return(0);
}
INIT_APP_EXPORT(mb_rtu_master_startup);