Templates/STM32_Modbus
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Добавлен протокол TCP, но не проверен

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Razvalyaev
2025-11-05 18:18:55 +03:00
parent 52143ce07c
commit b71b799566
3 changed files with 22 additions and 7 deletions
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26
Inc/modbus_core.h
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@@ -40,16 +40,24 @@
////////////////////---MODBUS MESSAGE DEFINES---/////////////////////
//-------------DEFINES FOR STRUCTURE----------------
/* defines for structure of modbus message */
#define MbAddr_SIZE 1 ///< size of (MbAddr)
#define Func_Code_SIZE 1 ///< size of (Func_Code)
#define Addr_SIZE 2 ///< size of (Addr)
#define Qnt_SIZE 2 ///< size of (Qnt)
#define ByteCnt_SIZE 1 ///< size of (ByteCnt)
#define ID_Transaction_size 2 ///< size of (ID_Transaction)
#define ID_Protocol_size 2 ///< size of (ID_Protocol)
#define PDU_Len_size 2 ///< size of (PDU Length)
#define MbAddr_SIZE 1 ///< size of (Slave Addr)
#define Func_Code_SIZE 1 ///< size of (Function Code)
#define Addr_SIZE 2 ///< size of (Address)
#define Qnt_SIZE 2 ///< size of (Quantity)
#define ByteCnt_SIZE 1 ///< size of (Byte Count)
#define DATA_SIZE 125 ///< maximum number of data: DWORD (NOT MESSAGE SIZE)
#define CRC_SIZE 2 ///< size of (MB_CRC) in bytes
/** @brief Size of whole message */
#ifndef MODBUS_PROTOCOL_TCP
/** @brief Size of whole RTU message */
#define INFO_SIZE_MAX (MbAddr_SIZE+Func_Code_SIZE+Addr_SIZE+Qnt_SIZE+ByteCnt_SIZE)
#else
/** @brief Size of whole TCP message */
#define INFO_SIZE_MAX (ID_Transaction_size+ID_Protocol_size+PDU_Len_size+MbAddr_SIZE+Func_Code_SIZE+Addr_SIZE+Qnt_SIZE)
#endif
/** @brief Size of first part of message that will be received
first receive info part of message, than defines size of rest message*/
@@ -161,6 +169,12 @@ typedef struct
/** @brief Structure for modbus messsage */
typedef struct // RS_MsgTypeDef
{
#ifdef MODBUS_PROTOCOL_TCP
uint16_t ID_Transaction; ///< Modbus TCP: ID Transaction
uint16_t ID_Prot; ///< Modbus TCP: ID Protocol
uint16_t PDU_Length; ///< Modbus TCP: PDU_Length
#endif
uint8_t MbAddr; ///< Modbus Slave Address
MB_FunctonTypeDef Func_Code; ///< Modbus Function Code
MB_DevIdMsgTypeDef DevId; ///< Read Device Identifications Header struct

2
Src/modbus_master.c
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@@ -93,7 +93,7 @@ int MB_RespGet_CoilState(RS_MsgTypeDef *modbus_msg, uint16_t coil_addr, int *coi
if(bit_index < 8)
*coil_state = (modbus_msg->DATA[data_index] >> (bit_index+8)) & 0x01;
else
*coil_state = (modbus_msg->DATA[data_index] >> bit_index) & 0x01;
*coil_state = ((modbus_msg->DATA[data_index]&0xFF) >> bit_index) & 0x01;
return 1;

1
__modbus_config.h
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@@ -51,6 +51,7 @@
#define MODBUS_ENABLE_DEVICE_IDENTIFICATIONS ///< Включить обработку идентификаторы устройства
#define MODBUS_ENABLE_DIAGNOSTICS ///< Включить обработку диагностики модбас
#define MODBUS_PROTOCOL_TCP ///< Включить TCP-протокол, иначе - RTU
/**
* @brief Поменять комманды 0x03 и 0x04 местами (для LabView терминалки от двигателей)