fp-wier-controller/main/app/modbus_master.c

/**
 * @Author: 李建
 * @Date: 2025/4/27 15:35
 * Description: 实现485主站
 * Copyright: Copyright (©) 2025 永续绿建. All rights reserved.
 */
#include <esp_err.h>
#include "modbus_master.h"
#include "mbcontroller.h"

#define OPTS(min_val, max_val, step_val) { .opt1 = min_val, .opt2 = max_val, .opt3 = step_val }
static const char *TAG = "MODBUS_MASTER";

enum {
    // 分风箱主板从站号
    MB_DEVICE_XFJS_ADDR = 10,

};
static void *master_handle = NULL;
// The number of parameters that intended to be used in the particular control process
#define MASTER_MAX_CIDS num_device_parameters

// Number of reading of parameters from slave
#define MASTER_MAX_RETRY                (10)

// Timeout to update cid over Modbus
#define UPDATE_CIDS_TIMEOUT_MS          (500)
#define UPDATE_CIDS_TIMEOUT_TICS        (UPDATE_CIDS_TIMEOUT_MS / portTICK_PERIOD_MS)

// Timeout between polls
#define POLL_TIMEOUT_MS                 (1)
#define POLL_TIMEOUT_TICS               (POLL_TIMEOUT_MS / portTICK_PERIOD_MS)
// The macro to get offset for parameter in the appropriate structure
#define HOLD_OFFSET(field) ((uint16_t)(offsetof(holding_reg_params_t, field) + 1))
#define INPUT_OFFSET(field) ((uint16_t)(offsetof(input_reg_params_t, field) + 1))
// Discrete offset macro

#define STR(fieldname) ((const char *)( fieldname ))


const mb_parameter_descriptor_t device_parameters[] = {
        // { CID, Param Name, Units, Modbus Slave Addr, Modbus Reg Type, Reg Start, Reg Size, Instance Offset, Data Type, Data Size, Parameter Options, Access Mode}
        {CID_POWER,        STR("power"),        STR(""), MB_DEVICE_XFJS_ADDR, MB_PARAM_HOLDING,
                POWER_ADDRESS_REGISTER,        1, 0, PARAM_TYPE_U16, 2, OPTS(0, 0, 0), PAR_PERMS_READ_WRITE},
        {CID_MODE,        STR("mode"),        STR(""), MB_DEVICE_XFJS_ADDR, MB_PARAM_HOLDING,
                MODE_ADDRESS_REGISTER,        1, 0, PARAM_TYPE_U16, 2, OPTS(0, 0, 0), PAR_PERMS_READ_WRITE},
        {CID_FAN_SPEED,   STR("fan_speed"),        STR(""), MB_DEVICE_XFJS_ADDR, MB_PARAM_HOLDING,
                FAN_SPEED_ADDRESS_REGISTER,        1, 0, PARAM_TYPE_U16, 2, OPTS(0, 0, 0), PAR_PERMS_READ_WRITE},
        {CID_EXTERNAL_TEMPERATURE,   STR("external_temperature"),        STR(""), MB_DEVICE_XFJS_ADDR, MB_PARAM_HOLDING,
                EXTERNAL_TEMPERATURE_ADDRESS_REGISTER,        1, 0, PARAM_TYPE_U16, 2, OPTS(0, 0, 0), PAR_PERMS_READ_WRITE},
        {CID_EXTERNAL_HUMIDITY,   STR("external_humidity"),        STR(""), MB_DEVICE_XFJS_ADDR, MB_PARAM_HOLDING,
                EXTERNAL_HUMIDITY_ADDRESS_REGISTER,        1, 0, PARAM_TYPE_U16, 2, OPTS(0, 0, 0), PAR_PERMS_READ_WRITE},
        {CID_RETURN_AIR_TEMPERATURE,   STR("return_air_temperature"),        STR(""), MB_DEVICE_XFJS_ADDR, MB_PARAM_HOLDING,
                RETURN_AIR_TEMPERATURE_ADDRESS_REGISTER,        1, 0, PARAM_TYPE_U16, 2, OPTS(0, 0, 0), PAR_PERMS_READ_WRITE},
        {CID_RETURN_AIR_HUMIDITY,   STR("return_air_humidity"),        STR(""), MB_DEVICE_XFJS_ADDR, MB_PARAM_HOLDING,
                RETURN_AIR_HUMIDITY_ADDRESS_REGISTER,        1, 0, PARAM_TYPE_U16, 2, OPTS(0, 0, 0), PAR_PERMS_READ_WRITE},
        {CID_RETURN_AIR_PM25,   STR("return_air_pm25"),        STR(""), MB_DEVICE_XFJS_ADDR, MB_PARAM_HOLDING,
                RETURN_AIR_PM25_ADDRESS_REGISTER,        1, 0, PARAM_TYPE_U16, 2, OPTS(0, 0, 0), PAR_PERMS_READ_WRITE},
        {CID_RETURN_AIR_CO2,   STR("return_air_co2"),        STR(""), MB_DEVICE_XFJS_ADDR, MB_PARAM_HOLDING,
                RETURN_AIR_CO2_ADDRESS_REGISTER,        1, 0, PARAM_TYPE_U16, 2, OPTS(0, 0, 0), PAR_PERMS_READ_WRITE},
        {CID_SELECT_POSITION,   STR("select_position"),        STR(""), MB_DEVICE_XFJS_ADDR, MB_PARAM_HOLDING,
                SELECT_POSITION_ADDRESS_REGISTER,        1, 0, PARAM_TYPE_U16, 2, OPTS(0, 0, 0), PAR_PERMS_READ_WRITE},
        {CID_MIN_HUMIDITY,   STR("min_humidity"),        STR(""), MB_DEVICE_XFJS_ADDR, MB_PARAM_HOLDING,
                MIN_HUMIDITY_ADDRESS_REGISTER,        1, 0, PARAM_TYPE_U16, 2, OPTS(0, 0, 0), PAR_PERMS_READ_WRITE},
        {CID_MAX_HUMIDITY,   STR("max_humidity"),        STR(""), MB_DEVICE_XFJS_ADDR, MB_PARAM_HOLDING,
                MAX_HUMIDITY_ADDRESS_REGISTER,        1, 0, PARAM_TYPE_U16, 2, OPTS(0, 0, 0), PAR_PERMS_READ_WRITE},
        {CID_ERROR_CODE,   STR("error_code"),        STR(""), MB_DEVICE_XFJS_ADDR, MB_PARAM_HOLDING,
                ERROR_CODE_ADDRESS_REGISTER,        1, 0, PARAM_TYPE_U16, 2, OPTS(0, 0, 0), PAR_PERMS_READ_WRITE},


};

// Calculate number of parameters in the table
const uint16_t num_device_parameters = (sizeof(device_parameters) / sizeof(device_parameters[0]));


IRAM_ATTR static esp_err_t master_init() {
    // Initialize Modbus controller
    mb_communication_info_t comm = {
            .ser_opts.port = MB_PORT_NUM,
            .ser_opts.mode = MB_RTU,
            .ser_opts.baudrate = MB_DEV_SPEED,
            .ser_opts.parity = MB_PARITY_NONE,
            .ser_opts.response_tout_ms = 400,
            .ser_opts.data_bits = UART_DATA_8_BITS,
            .ser_opts.stop_bits = UART_STOP_BITS_1
    };
    ESP_LOGI(TAG, "Modbus controller initialized...");
    esp_err_t err = mbc_master_create_serial(&comm, &master_handle);
    MB_RETURN_ON_FALSE((master_handle != NULL), ESP_ERR_INVALID_STATE, TAG,
                       "mb controller initialization fail.");
    MB_RETURN_ON_FALSE((err == ESP_OK), ESP_ERR_INVALID_STATE, TAG,
                       "mb controller initialization fail, returns(0x%x).", (int) err);

    // Set UART pin numbers
    err = uart_set_pin(MB_PORT_NUM, MB_GPIO_TX, MB_GPIO_RX,
                       UART_PIN_NO_CHANGE, UART_PIN_NO_CHANGE);
    MB_RETURN_ON_FALSE((err == ESP_OK), ESP_ERR_INVALID_STATE, TAG,
                       "mb serial set pin failure, uart_set_pin() returned (0x%x).", (int) err);

    err = mbc_master_start(master_handle);
    MB_RETURN_ON_FALSE((err == ESP_OK), ESP_ERR_INVALID_STATE, TAG,
                       "mb controller start fail, returned (0x%x).", (int) err);

    // Set driver mode to Half Duplex
    err = uart_set_mode(MB_PORT_NUM, UART_MODE_UART);
    MB_RETURN_ON_FALSE((err == ESP_OK), ESP_ERR_INVALID_STATE, TAG,
                       "mb serial set mode failure, uart_set_mode() returned (0x%x).", (int) err);

    vTaskDelay(5);
    err = mbc_master_set_descriptor(master_handle, &device_parameters[0], num_device_parameters);
    MB_RETURN_ON_FALSE((err == ESP_OK), ESP_ERR_INVALID_STATE, TAG,
                       "mb controller set descriptor fail, returns(0x%x).", (int) err);
    ESP_LOGI(TAG, "Modbus master stack initialized...");
    return err;
}

//static void *master_get_param_data(const mb_parameter_descriptor_t *param_descriptor)
//{
//    assert(param_descriptor != NULL);
//    void *instance_ptr = NULL;
//    if (param_descriptor->param_offset != 0) {
//        switch(param_descriptor->mb_param_type)
//        {
//            case MB_PARAM_HOLDING:
//                instance_ptr = ((void *)&holding_reg_params + param_descriptor->param_offset - 1);
//                break;
//            default:
//                instance_ptr = NULL;
//                break;
//        }
//    } else {
//        ESP_LOGE(TAG, "Wrong parameter offset for CID #%u", (unsigned)param_descriptor->cid);
//        assert(instance_ptr != NULL);
//    }
//    return instance_ptr;
//}
void modbus_master_task(void *arg) {
    vTaskDelay(5000 / portTICK_PERIOD_MS);
    ESP_LOGI(TAG, "Modbus master task started...");
    esp_err_t err = ESP_OK;
    uint8_t temp_data[2] = {0}; // temporary buffer to hold maximum CID size
    uint8_t type = 0;
    const mb_parameter_descriptor_t *param_descriptor = NULL;
    for (;;) {
        for (uint16_t cid = 0; (err != ESP_ERR_NOT_FOUND) && cid < 1; cid++) {
            err = mbc_master_get_cid_info(master_handle, cid, &param_descriptor);
            if ((err != ESP_ERR_NOT_FOUND) && (param_descriptor != NULL)) {
                err = mbc_master_get_parameter(master_handle, param_descriptor->cid, (uint8_t *) temp_data, &type);
                if (err == ESP_OK) {
                    ESP_LOGI(TAG, "Characteristic #%d %s (%s) value = %d read successful.",
                             param_descriptor->cid,
                             (char *) param_descriptor->param_key,
                             (char *) param_descriptor->param_units,
                             *(uint16_t *) temp_data);

                } else {
                    ESP_LOGE(TAG, "Characteristic #%d (%s) read fail, err = 0x%x (%s).",
                             param_descriptor->cid,
                             (char *) param_descriptor->param_key,
                             (int) err,
                             (char *) esp_err_to_name(err));
                }
            }
            vTaskDelay(1000 / portTICK_PERIOD_MS);
        }
        vTaskDelay(5000 / portTICK_PERIOD_MS);
    }
}

 void modbus_master_init() {
    ESP_LOGI(TAG, "Modbus master init...");
    ESP_ERROR_CHECK(master_init());
    vTaskDelay(10);
    //xTaskCreatePinnedToCore(modbus_master_task, "modbus_master_task", 4 * 1024, NULL, 5, NULL, 1);
}

esp_err_t mm_set_param(uint16_t cid, uint8_t *value) {
    uint8_t type = PARAM_TYPE_U16;
    return mbc_master_set_parameter(master_handle, cid, value, &type);
}
esp_err_t mm_get_param(uint16_t cid, uint8_t *value) {
    uint8_t type = PARAM_TYPE_U16;
    return mbc_master_get_parameter(master_handle, cid, value, &type);
}
void modbus_master_destroy() {
    mbc_master_delete(master_handle);
}