116 lines
3.9 KiB
C
116 lines
3.9 KiB
C
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/****************************************************************************
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Copyright(c) 2019 by Aerospace C.Power (Chongqing) Microelectronics. ALL RIGHTS RESERVED.
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This Information is proprietary to Aerospace C.Power (Chongqing) Microelectronics and MAY NOT
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be copied by any method or incorporated into another program without
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the express written consent of Aerospace C.Power. This Information or any portion
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thereof remains the property of Aerospace C.Power. The Information contained herein
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is believed to be accurate and Aerospace C.Power assumes no responsibility or
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liability for its use in any way and conveys no license or title under
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any patent or copyright and makes no representation or warranty that this
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Information is free from patent or copyright infringement.
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****************************************************************************/
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#ifndef IOT_PROTO_MODBUS_H
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#define IOT_PROTO_MODBUS_H
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#include "iot_proto_common.h"
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#if PLC_SUPPORT_STA_ROLE
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#ifdef __cplusplus
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extern "C" {
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#endif
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#pragma pack(push) // save the pack status
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#pragma pack(1) // 1 byte align
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#define HALF_NO 0
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#define HALF_YES 1
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#define OVERFLOW 2
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#define LEFT_8BIT 256
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#define MODBUS_CMD_01_READ_COIL_STATUS 0x01
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#define MODBUS_CMD_02_READ_INPUT_STATUS 0x02
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#define MODBUS_CMD_03_READ_HOLD_REG 0x03
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#define MODBUS_CMD_04_READ_INPUT_REG 0x04
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#define MODBUS_CMD_05_ENFORCE_COIL 0x05
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#define MODBUS_CMD_06_PRESET_REG 0x06
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#define MODBUS_CMD_0F_ENFORCE_MULTIPLE_COIL 0x0F
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#define MODBUS_CMD_10_PRESET_MULTIPLE_REG 0x10
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#define MODBUS_CMD_LEN_NO_DATA 6
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#define MODBUS_CMD_01_04_ACK_LEN 5
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#define MODBUS_CMD_0F_10_ACK_LEN 9
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#define MODBUS_CMD_01_04_ACK_LEN_NO_CRC 3
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#define MODBUS_CMD_0F_10_ACK_LEN_NO_CRC 7
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#define MODBUS_MIN_LEN 5
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#define MATCH 1
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#define NO_MATCH 0
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/* value of resv set to 1 means modbus frame */
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#define MODBUS_RESV0_RESV 0x01
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typedef struct _modbus_head_01_10 {
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uint8_t addr;
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uint8_t cmd;
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/* these bytes are useful, but not be used in our fuction */
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uint8_t no_use[4];
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uint8_t crc_l;
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uint8_t crc_h;
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} modbus_head_01_to_10;
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typedef struct _modbus_head_01_04_with_len {
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uint8_t addr;
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uint8_t cmd;
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uint8_t len;
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uint8_t data[0];
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} modbus_head_01_04_with_len;
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typedef struct _modbus_head_0f_10_with_len {
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uint8_t addr;
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uint8_t cmd;
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uint8_t addr_l;
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uint8_t addr_h;
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uint8_t reg_num_l;
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uint8_t reg_num_h;
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uint8_t data_len;
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uint8_t data[0];
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} modbus_head_0f_10_with_len;
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/**
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* @brief iot_proto_modbus_format_check() - To pickup modbus frames from a
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buffer
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* @param recv_data: point to the buffer data
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* @param pdata: point to the array which will reseive the ge frames
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* @param ret_size: point to the data number of a frames
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* @ge_len_out: point to the ge length if it exist
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* @param retval: how many frames
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*/
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uint8_t iot_proto_modbus_format_check(mcu_data_handle_t *recv_data,
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uint8_t *pdata, uint16_t *ret_size, uint16_t *ge_len);
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/**
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* @brief iot_proto_modbus_frm_format_check() check the data is modbus frame
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* or not.
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* @param data: point to the data
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* @param data: len of the data
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* @param retval: 0:modbus frame,others:not modbus frame
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*/
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uint8_t iot_proto_modbus_frm_format_check(uint8_t *data, uint16_t len);
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#pragma pack(pop)
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#ifdef __cplusplus
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}
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#endif
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#endif /* PLC_SUPPORT_STA_ROLE */
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#endif /* end IOT_PROTO_MODBUS_H */
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