[3] | 1 | /* |
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| 2 | * modbus.c |
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| 3 | * |
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| 4 | * Created: 03.09.2012 08:39:20 |
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| 5 | * Author: Falko |
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| 6 | */ |
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| 7 | |
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| 8 | |
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| 9 | |
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| 10 | #if MODBUS_SUPPORT == TRUE |
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| 11 | |
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| 12 | #include "modbus.h" |
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| 13 | #include "stm32g0xx_hal.h" |
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| 14 | #include "main.h" |
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| 15 | #include "stm32g0xx_hal_tim.h" |
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| 16 | #include "stm32_hal_legacy.h" |
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| 17 | #include "sysdata.h" |
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| 18 | #include <stdio.h> |
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| 19 | // --------------------------------------------------------- |
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| 20 | // -------------------- MODUL DEFINES ---------------------- |
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| 21 | // --------------------------------------------------------- |
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| 22 | |
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| 23 | |
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| 24 | |
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| 25 | |
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| 26 | #define MODBUS_BROADCAST_ADDRESS 0x00 |
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| 27 | #define FC_READ_COILS 0x01 |
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| 28 | #define FC_READ_HOLDING_REGISTERS 0x03 |
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| 29 | #define FC_WRITE_SINGLE_REGISTER 0x06 |
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| 30 | #define FC_WRITE_MULTIPLE_REGISTER 0x10 |
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| 31 | |
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| 32 | /* Protocol exceptions */ |
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| 33 | #define ILLEGAL_FUNCTION 0x01 |
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| 34 | #define ILLEGAL_DATA_ADDRESS 0x02 |
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| 35 | #define ILLEGAL_DATA_VALUE 0x03 |
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| 36 | #define SLAVE_DEVICE_FAILURE 0x04 |
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| 37 | #define SERVER_FAILURE 0x04 |
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| 38 | #define ACKNOWLEDGE 0x05 |
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| 39 | #define SLAVE_DEVICE_BUSY 0x06 |
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| 40 | #define SERVER_BUSY 0x06 |
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| 41 | #define NEGATIVE_ACKNOWLEDGE 0x07 |
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| 42 | #define MEMORY_PARITY_ERROR 0x08 |
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| 43 | #define GATEWAY_PROBLEM_PATH 0x0A |
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| 44 | #define GATEWAY_PROBLEM_TARGET 0x0B |
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| 45 | |
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| 46 | /* Local Error codes */ |
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| 47 | #define INVALID_CRC -1 |
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| 48 | |
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| 49 | // Position der Daten im Rx String |
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| 50 | #define OFFSET_SLAVE_ADRESS 0x00 |
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| 51 | #define OFFSET_FUNCTION_CODE 0x01 |
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| 52 | #define OFFSET_START_ADRESS_HI 0x02 |
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| 53 | #define OFFSET_START_ADRESS_LO 0x03 |
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| 54 | #define OFFSET_NO_OF_REGISTERS_HI 0x04 |
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| 55 | #define OFFSET_NO_OF_REGISTERS_LO 0x05 |
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| 56 | |
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| 57 | #define MIN_NUMBER_OF_REGISTERS_FC3 0x01 |
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| 58 | #define MAX_NUMBER_OF_REGISTERS_FC3 0x7D |
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| 59 | #define MIN_NUMBER_OF_REGISTERS_FC16 0x01 |
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| 60 | #define MAX_NUMBER_OF_REGISTERS_FC16 0x7B |
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| 61 | |
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| 62 | #ifdef DEBUG |
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| 63 | #define RESPONSE_TIMEOUT 300 // * 1ms |
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| 64 | #else |
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| 65 | #define RESPONSE_TIMEOUT 1000 // * 1ms |
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| 66 | #endif |
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| 67 | |
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| 68 | // --- Externe Variablen -------------------------------------------- |
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| 69 | extern modbus_t modbusData; |
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| 70 | |
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| 71 | |
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| 72 | |
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| 73 | // --- Private Funktions Prototypen -------------------------------------------- |
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| 74 | |
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| 75 | void mbUartInit (modbus_t * mb_data,UART_HandleTypeDef * usart, uint32_t baudrate, uint32_t parityMode, uint32_t stopBits , uint32_t nrOfBitsPerChar); |
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| 76 | uint16_t mbCrc16 (uint8_t *buf, uint32_t len); |
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| 77 | void mbSend (modbus_t * mb_data ); |
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| 78 | uint32_t mbSlaveReadHoldingRegisters (modbus_t * mb_data, uint8_t *msg, uint32_t tx_position, uint8_t deviceID); |
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| 79 | uint32_t mbSlaveWriteMultipleRegisters (modbus_t * mb_data, uint8_t *msg, uint32_t tx_position, uint32_t deviceID); |
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| 80 | uint32_t mbSlaveWriteSingleRegister (modbus_t * mb_data, uint8_t *msg,uint32_t tx_position, uint32_t deviceID); |
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| 81 | uint32_t mbSlaveResponseException (modbus_t * mb_data, uint32_t function_code, uint32_t exception_code,uint32_t tx_position) ; |
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| 82 | static HAL_StatusTypeDef RS485_ModbusEx_Init (UART_HandleTypeDef *huart, uint32_t Polarity, uint32_t AssertionTime, uint32_t DeassertionTime, uint32_t charReceiveTimeout); |
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| 83 | static void UART_TxISR_8BIT (UART_HandleTypeDef *huart); |
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| 84 | |
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| 85 | // --- GEMEINSAME MODBUS FUNKTIONEN -------------------------------------------- |
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| 86 | // Diese Funktionen werden sowohl von Modbus Master als auch Modbus Slave verwendet |
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| 87 | |
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| 88 | /* |
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| 89 | * |
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| 90 | * @brief Diese Funktion Initialisert die Modbus Datenstrukturen und die Hardware |
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| 91 | * |
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| 92 | * Das Modbus Modul benötigt einen UART und einen Timer pro Modbus Anschluss |
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| 93 | * Die Funktion erfordert eine vorhandene Callback funktion namens HAL_UART_MspInit |
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| 94 | * In dieser muss: |
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| 95 | * - Der UART CLK eingeschaltet werden |
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| 96 | * - Die Pins initialisert werden (Alternate Port Funktion) |
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| 97 | * - Der NVIC Interrupt eingeschaltet werden |
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| 98 | * @param mb_data : Datenstruktur zur Aufnahme aller Daten |
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| 99 | * @param baudrate : Bautrate |
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| 100 | * @param parityMode : Parity, möglich ist UART_PARITY_ODD, UART_PARITY_EVEN, UART_PARITY_NONE. Default ist lt. Modbus Standart EVEN |
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| 101 | * @param usart : Timer Modul, z.B. USART1 |
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| 102 | * @retval None |
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| 103 | */ |
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| 104 | void mbInit(modbus_t * mb_data, uint32_t baudrate, uint32_t parityMode, UART_HandleTypeDef * usart, accessMode_t * accessModeTable, uint16_t * currentAccessState ) |
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| 105 | { |
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| 106 | uint32_t numberOfBitsPerChar; |
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| 107 | uint32_t stopBits; |
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| 108 | |
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| 109 | // Berechne Stop Bits |
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| 110 | if ((parityMode== MODBUS_UART_PARITY_EVEN) || (parityMode == MODBUS_UART_PARITY_ODD)) |
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| 111 | { |
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| 112 | stopBits = 1; |
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| 113 | } |
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| 114 | else |
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| 115 | { |
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| 116 | stopBits = 2; |
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| 117 | } |
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| 118 | |
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| 119 | // Berechne Anzahl der Bits per Char |
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| 120 | numberOfBitsPerChar = NUMBER_OF_STARTBITS + NUMBER_OF_DATABITS + stopBits; |
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| 121 | if ((parityMode == MODBUS_UART_PARITY_EVEN) || (parityMode == MODBUS_UART_PARITY_ODD)) |
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| 122 | { |
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| 123 | numberOfBitsPerChar +=1; |
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| 124 | } |
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| 125 | |
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| 126 | mbUartInit(mb_data,usart, baudrate, parityMode, stopBits, numberOfBitsPerChar); |
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| 127 | |
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| 128 | // Datenstrukturen zurücksetzen |
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| 129 | mb_data->last_query_function_code = 0; |
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| 130 | mb_data->last_query_tcp_id.w = 0; |
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| 131 | mb_data->last_query_number_of_register.w = 0; |
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| 132 | mb_data->current_query = MB_QUERY_NOTHING; |
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| 133 | mb_data->last_query_slave_adress = 0; |
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| 134 | mb_data->last_query_start_adress.w = 0; |
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| 135 | mb_data->last_query_timeout = false; |
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| 136 | |
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| 137 | mb_data->accessModeTable = accessModeTable; |
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| 138 | mb_data->currentAccessState = currentAccessState; |
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| 139 | } |
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| 140 | |
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| 141 | /* |
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| 142 | * |
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| 143 | * @brief Diese Funktion Initialisert die Modbus UART Hardware |
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| 144 | * |
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| 145 | * @param mb_data : Datenstruktur zur Aufnahme aller Daten |
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| 146 | * @param usart : UART Modul, z.B. USART1 |
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| 147 | * @param baudrate : UART BAUD |
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| 148 | * @param parityMmode : Parity, möglich ist: |
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| 149 | UART_PARITY_ODD, UART_PARITY_EVEN, UART_PARITY_NONE. |
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| 150 | Default ist lt. Modbus Standart EVEN |
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| 151 | * @param stopBits : Anzahl der Stop Bits, lt Modbus Standart |
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| 152 | * 2 Stop Bits bei Parity None, ansonsten 2 Stop Bits |
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| 153 | * @retval None |
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| 154 | */ |
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| 155 | void mbUartInit(modbus_t * mb_data,UART_HandleTypeDef * usart, uint32_t baudrate, uint32_t parityMode, uint32_t stopBits , uint32_t nrOfBitsPerChar) |
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| 156 | { |
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| 157 | //--- Uart Init ------------------------------------------------------------ |
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| 158 | mb_data->uart = usart; |
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| 159 | |
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| 160 | // Init aus Cube |
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| 161 | //mb_data->uart->Instance = USART3; |
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| 162 | //mb_data->uart->Init.BaudRate = 19200; |
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| 163 | //mb_data->uart->Init.WordLength = UART_WORDLENGTH_9B; |
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| 164 | //mb_data->uart->Init.StopBits = UART_STOPBITS_1; |
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| 165 | //mb_data->uart->Init.Parity = UART_PARITY_EVEN; |
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| 166 | //mb_data->uart->Init.Mode = UART_MODE_TX_RX; |
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| 167 | //mb_data->uart->Init.HwFlowCtl = UART_HWCONTROL_NONE; |
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| 168 | //mb_data->uart->Init.OverSampling = UART_OVERSAMPLING_16; |
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| 169 | //mb_data->uart->Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE; |
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| 170 | //mb_data->uart->Init.ClockPrescaler = UART_PRESCALER_DIV1; |
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| 171 | //mb_data->uart->AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT; |
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| 172 | |
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| 173 | // Init Änderungen |
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| 174 | |
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| 175 | // Baudrate |
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| 176 | mb_data->uart->Init.BaudRate = baudrate; |
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| 177 | // Parity Mode // Word length |
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| 178 | if(parityMode == MODBUS_UART_PARITY_EVEN) |
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| 179 | { |
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| 180 | mb_data->uart->Init.Parity = UART_PARITY_EVEN; |
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| 181 | mb_data->uart->Init.WordLength = UART_WORDLENGTH_9B; |
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| 182 | } |
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| 183 | else if(parityMode == MODBUS_UART_PARITY_ODD) |
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| 184 | { |
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| 185 | mb_data->uart->Init.Parity = UART_PARITY_ODD; |
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| 186 | mb_data->uart->Init.WordLength = UART_WORDLENGTH_9B; |
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| 187 | } |
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| 188 | else |
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| 189 | { |
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| 190 | mb_data->uart->Init.Parity = UART_PARITY_NONE; |
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| 191 | mb_data->uart->Init.WordLength = UART_WORDLENGTH_8B; |
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| 192 | } |
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| 193 | // Stopbits |
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| 194 | if (stopBits == 1) |
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| 195 | { |
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| 196 | mb_data->uart->Init.StopBits = UART_STOPBITS_1; |
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| 197 | } |
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| 198 | else |
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| 199 | { |
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| 200 | mb_data->uart->Init.StopBits = UART_STOPBITS_2; |
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| 201 | } |
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| 202 | // Init |
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| 203 | if (RS485_ModbusEx_Init(mb_data->uart, UART_DE_POLARITY_HIGH, 0, 0,TIMEOUT_FRAME_COMPLETE*nrOfBitsPerChar) != HAL_OK) |
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| 204 | { |
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| 205 | Error_Handler(); |
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| 206 | } |
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| 207 | //if (HAL_UARTEx_DisableFifoMode(mb_data->uart) != HAL_OK) |
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| 208 | //{ |
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| 209 | // Error_Handler(); |
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| 210 | //} |
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| 211 | |
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| 212 | if(HAL_UART_Receive_IT(mb_data->uart, mb_data->rx_buffer, RXBUFFERSIZE) != HAL_OK) |
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| 213 | { |
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| 214 | printf("uart error \n\r"); |
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| 215 | while(1) |
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| 216 | { |
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| 217 | } |
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| 218 | } |
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| 219 | } |
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| 220 | |
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| 221 | /* |
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| 222 | * |
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| 223 | * @brief End ongoing Rx transfer on UART peripheral (following error detection or Reception completion). |
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| 224 | * @param huart: UART handle. |
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| 225 | * @retval None |
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| 226 | */ |
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| 227 | void mbUartEndRxTransfer(UART_HandleTypeDef *huart) |
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| 228 | { |
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| 229 | /* Disable RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */ |
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| 230 | //CLEAR_BIT(huart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE)); |
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| 231 | //CLEAR_BIT(huart->Instance->CR3, USART_CR3_EIE); |
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| 232 | |
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| 233 | /* At end of Rx process, restore huart->RxState to Ready */ |
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| 234 | huart->RxState = HAL_UART_STATE_READY; |
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| 235 | } |
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| 236 | |
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| 237 | void mbUartRx(modbus_t* mb_data) |
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| 238 | { |
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| 239 | uint32_t pos; |
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| 240 | uint8_t data; |
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| 241 | |
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| 242 | pos = mb_data->rx_head; |
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| 243 | |
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| 244 | if (pos >= RXBUFFERSIZE) |
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| 245 | { |
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| 246 | return; |
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| 247 | } |
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| 248 | //data = mb_data->uart->Instance->RDR |
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| 249 | data = mb_data->uart->Instance->RDR & (uint8_t)0x00FF; //NOTE: mb_data->uart.Instance->DR geändert |
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| 250 | mb_data->rx_buffer[pos] = data; |
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| 251 | |
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| 252 | mb_data->rx_head++; |
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| 253 | |
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| 254 | //mbTimerStart(mb_data); |
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| 255 | } |
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| 256 | |
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| 257 | HAL_StatusTypeDef mbUartTx(UART_HandleTypeDef *huart) |
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| 258 | { |
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| 259 | uint16_t* tmp; |
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| 260 | |
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| 261 | if(huart->Init.WordLength == UART_WORDLENGTH_9B) |
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| 262 | { |
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| 263 | tmp = (uint16_t*) huart->pTxBuffPtr; |
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| 264 | huart->Instance->TDR = (uint16_t)(*tmp & (uint16_t)0x01FF); //NOTE: huart->Instance->DR geändert |
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| 265 | |
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| 266 | if(huart->Init.Parity == UART_PARITY_NONE) |
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| 267 | { |
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| 268 | huart->pTxBuffPtr += 2; |
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| 269 | } |
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| 270 | else |
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| 271 | { |
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| 272 | huart->pTxBuffPtr += 1; |
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| 273 | } |
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| 274 | } |
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| 275 | else |
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| 276 | { |
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| 277 | huart->Instance->TDR = (uint8_t)(*huart->pTxBuffPtr++ & (uint8_t)0x00FF); //NOTE:huart->Instance->DR geändert |
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| 278 | } |
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| 279 | |
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| 280 | if(--huart->TxXferCount == 0) |
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| 281 | { |
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| 282 | /* Disable the UART Transmit Complete Interrupt */ |
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| 283 | __HAL_UART_DISABLE_IT(huart, UART_IT_TXE); |
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| 284 | |
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| 285 | /* Enable the UART Transmit Complete Interrupt */ |
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| 286 | __HAL_UART_ENABLE_IT(huart, UART_IT_TC); |
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| 287 | } |
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| 288 | return HAL_OK; |
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| 289 | } |
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| 290 | |
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| 291 | // huart->State gibt es nicht mehr. Ersetzt durch huart->gState. |
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| 292 | /** |
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| 293 | * @brief Wraps up transmission in non blocking mode. |
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| 294 | * @param huart: pointer to a UART_HandleTypeDef structure that contains |
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| 295 | * the configuration information for the specified UART module. |
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| 296 | * @retval HAL status |
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| 297 | */ |
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| 298 | static void UART_EndTransmit_IT(UART_HandleTypeDef *huart) |
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| 299 | { |
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| 300 | /* Disable the UART Transmit Complete Interrupt */ |
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| 301 | CLEAR_BIT(huart->Instance->CR1, USART_CR1_TCIE); |
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| 302 | |
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| 303 | /* Tx process is ended, restore huart->gState to Ready */ |
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| 304 | huart->gState = HAL_UART_STATE_READY; |
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| 305 | |
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| 306 | /* Cleat TxISR function pointer */ |
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| 307 | huart->TxISR = NULL; |
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| 308 | |
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| 309 | #if (USE_HAL_UART_REGISTER_CALLBACKS == 1) |
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| 310 | /*Call registered Tx complete callback*/ |
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| 311 | huart->TxCpltCallback(huart); |
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| 312 | #else |
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| 313 | /*Call legacy weak Tx complete callback*/ |
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| 314 | HAL_UART_TxCpltCallback(huart); |
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| 315 | #endif /* USE_HAL_UART_REGISTER_CALLBACKS */ |
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| 316 | } |
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| 317 | |
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| 318 | |
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| 319 | static HAL_StatusTypeDef RS485_ModbusEx_Init(UART_HandleTypeDef *huart, uint32_t Polarity, uint32_t AssertionTime, uint32_t DeassertionTime, uint32_t charReceiveTimeout) |
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| 320 | { |
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| 321 | uint32_t temp; |
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| 322 | |
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| 323 | /* Check the UART handle allocation */ |
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| 324 | if (huart == NULL) |
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| 325 | { |
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| 326 | return HAL_ERROR; |
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| 327 | } |
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| 328 | /* Check the Driver Enable UART instance */ |
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| 329 | assert_param(IS_UART_DRIVER_ENABLE_INSTANCE(huart->Instance)); |
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| 330 | |
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| 331 | /* Check the Driver Enable polarity */ |
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| 332 | assert_param(IS_UART_DE_POLARITY(Polarity)); |
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| 333 | |
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| 334 | /* Check the Driver Enable assertion time */ |
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| 335 | assert_param(IS_UART_ASSERTIONTIME(AssertionTime)); |
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| 336 | |
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| 337 | /* Check the Driver Enable deassertion time */ |
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| 338 | assert_param(IS_UART_DEASSERTIONTIME(DeassertionTime)); |
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| 339 | |
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| 340 | if (huart->gState == HAL_UART_STATE_RESET) |
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| 341 | { |
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| 342 | /* Allocate lock resource and initialize it */ |
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| 343 | huart->Lock = HAL_UNLOCKED; |
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| 344 | |
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| 345 | #if (USE_HAL_UART_REGISTER_CALLBACKS == 1) |
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| 346 | UART_InitCallbacksToDefault(huart); |
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| 347 | |
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| 348 | if (huart->MspInitCallback == NULL) |
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| 349 | { |
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| 350 | huart->MspInitCallback = HAL_UART_MspInit; |
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| 351 | } |
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| 352 | |
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| 353 | /* Init the low level hardware */ |
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| 354 | huart->MspInitCallback(huart); |
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| 355 | #else |
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| 356 | /* Init the low level hardware : GPIO, CLOCK, CORTEX */ |
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| 357 | HAL_UART_MspInit(huart); |
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| 358 | #endif /* (USE_HAL_UART_REGISTER_CALLBACKS) */ |
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| 359 | } |
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| 360 | |
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| 361 | huart->gState = HAL_UART_STATE_BUSY; |
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| 362 | |
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| 363 | /* Disable the Peripheral */ |
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| 364 | __HAL_UART_DISABLE(huart); |
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| 365 | |
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| 366 | /* Set the UART Communication parameters */ |
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| 367 | if (UART_SetConfig(huart) == HAL_ERROR) |
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| 368 | { |
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| 369 | return HAL_ERROR; |
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| 370 | } |
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| 371 | |
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| 372 | if (huart->AdvancedInit.AdvFeatureInit != UART_ADVFEATURE_NO_INIT) |
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| 373 | { |
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| 374 | UART_AdvFeatureConfig(huart); |
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| 375 | } |
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| 376 | |
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| 377 | /* Enable the Driver Enable mode by setting the DEM bit in the CR3 register */ |
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| 378 | SET_BIT(huart->Instance->CR3, USART_CR3_DEM); |
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| 379 | |
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| 380 | /* Set the Driver Enable polarity */ |
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| 381 | MODIFY_REG(huart->Instance->CR3, USART_CR3_DEP, Polarity); |
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| 382 | |
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| 383 | /* Set the Driver Enable assertion and deassertion times */ |
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| 384 | temp = (AssertionTime << UART_CR1_DEAT_ADDRESS_LSB_POS); |
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| 385 | temp |= (DeassertionTime << UART_CR1_DEDT_ADDRESS_LSB_POS); |
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| 386 | MODIFY_REG(huart->Instance->CR1, (USART_CR1_DEDT | USART_CR1_DEAT), temp); |
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| 387 | |
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| 388 | // EDIT ECS START |
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| 389 | /*Set receive timeout time*/ |
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| 390 | SET_BIT(huart->Instance->CR2, USART_CR2_RTOEN); |
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| 391 | SET_BIT(huart->Instance->CR1, USART_CR1_RTOIE); |
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| 392 | MODIFY_REG(huart->Instance->RTOR, USART_RTOR_RTO, charReceiveTimeout); |
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| 393 | // EDIT ECS END |
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| 394 | |
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| 395 | /* Enable the Peripheral */ |
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| 396 | __HAL_UART_ENABLE(huart); |
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| 397 | |
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| 398 | /* TEACK and/or REACK to check before moving huart->gState and huart->RxState to Ready */ |
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| 399 | return (UART_CheckIdleState(huart)); |
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| 400 | } |
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| 401 | |
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| 402 | |
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| 403 | static int test; |
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| 404 | void MODBUS_UART_IRQHandler(UART_HandleTypeDef *huart) |
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| 405 | { |
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| 406 | uint32_t isrflags = READ_REG(huart->Instance->ISR); |
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| 407 | uint32_t cr1its = READ_REG(huart->Instance->CR1); |
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| 408 | uint32_t cr2its = READ_REG(huart->Instance->CR2); |
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| 409 | uint32_t cr3its = READ_REG(huart->Instance->CR3); |
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| 410 | |
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| 411 | uint32_t errorflags; |
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| 412 | uint32_t errorcode; |
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| 413 | |
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| 414 | errorflags = (isrflags & (uint32_t)(USART_ISR_PE | USART_ISR_FE | USART_ISR_ORE | USART_ISR_NE)); |
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| 415 | |
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| 416 | /* If some errors occur */ |
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| 417 | if ((errorflags != 0U) |
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| 418 | && ((((cr3its & (USART_CR3_RXFTIE | USART_CR3_EIE)) != 0U) |
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| 419 | || ((cr1its & (USART_CR1_RXNEIE_RXFNEIE | USART_CR1_PEIE)) != 0U)))) |
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| 420 | { |
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| 421 | /* UART parity error interrupt occurred -------------------------------------*/ |
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| 422 | if (((isrflags & USART_ISR_PE) != 0U) && ((cr1its & USART_CR1_PEIE) != 0U)) |
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| 423 | { |
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| 424 | __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_PEF); |
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| 425 | |
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| 426 | huart->ErrorCode |= HAL_UART_ERROR_PE; |
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| 427 | } |
---|
| 428 | |
---|
| 429 | /* UART frame error interrupt occurred --------------------------------------*/ |
---|
| 430 | if (((isrflags & USART_ISR_FE) != 0U) && ((cr3its & USART_CR3_EIE) != 0U)) |
---|
| 431 | { |
---|
| 432 | __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_FEF); |
---|
| 433 | |
---|
| 434 | huart->ErrorCode |= HAL_UART_ERROR_FE; |
---|
| 435 | } |
---|
| 436 | |
---|
| 437 | /* UART noise error interrupt occurred --------------------------------------*/ |
---|
| 438 | if (((isrflags & USART_ISR_NE) != 0U) && ((cr3its & USART_CR3_EIE) != 0U)) |
---|
| 439 | { |
---|
| 440 | __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_NEF); |
---|
| 441 | |
---|
| 442 | huart->ErrorCode |= HAL_UART_ERROR_NE; |
---|
| 443 | } |
---|
| 444 | |
---|
| 445 | /* UART Over-Run interrupt occurred -----------------------------------------*/ |
---|
| 446 | if (((isrflags & USART_ISR_ORE) != 0U) |
---|
| 447 | && (((cr1its & USART_CR1_RXNEIE_RXFNEIE) != 0U) || |
---|
| 448 | ((cr3its & (USART_CR3_RXFTIE | USART_CR3_EIE)) != 0U))) |
---|
| 449 | { |
---|
| 450 | __HAL_UART_CLEAR_FLAG(huart, UART_CLEAR_OREF); |
---|
| 451 | |
---|
| 452 | huart->ErrorCode |= HAL_UART_ERROR_ORE; |
---|
| 453 | } |
---|
| 454 | } /* End if some error occurs */ |
---|
| 455 | |
---|
| 456 | |
---|
| 457 | /* UART in mode Receiver (receive Timeout occured)--------------------------*/ |
---|
| 458 | if (((isrflags & USART_ISR_RTOF) != 0U) |
---|
| 459 | && (((cr1its & USART_CR1_RTOIE) != 0U) |
---|
| 460 | || ((cr3its & USART_CR2_RTOEN) != 0U))) |
---|
| 461 | { |
---|
| 462 | __HAL_UART_CLEAR_FLAG(huart, USART_ICR_RTOCF); |
---|
| 463 | huart->RxState = HAL_UART_STATE_READY; |
---|
| 464 | huart->gState = HAL_UART_STATE_READY; |
---|
| 465 | modbusData.mb_rx_frame_complete = 1; |
---|
| 466 | modbusData.setRxLed = true; |
---|
| 467 | |
---|
| 468 | } |
---|
| 469 | |
---|
| 470 | /* UART in mode Receiver ---------------------------------------------------*/ |
---|
| 471 | if (((isrflags & USART_ISR_RXNE_RXFNE) != 0U) |
---|
| 472 | && (((cr1its & USART_CR1_RXNEIE_RXFNEIE) != 0U) |
---|
| 473 | || ((cr3its & USART_CR3_RXFTIE) != 0U))) |
---|
| 474 | { |
---|
| 475 | if ((huart->RxState == HAL_UART_STATE_BUSY_RX) && (modbusData.rx_head < RXBUFFERSIZE)) //-> empfängt dann ein byte aber das ist nicht wild |
---|
| 476 | { |
---|
| 477 | modbusData.rx_buffer[modbusData.rx_head] = huart->Instance->RDR; |
---|
| 478 | //printf("xx%d: nr:%d %d\n",test ++,modbusData.rx_head, modbusData.rx_buffer[modbusData.rx_head]); |
---|
| 479 | modbusData.rx_head++; |
---|
| 480 | modbusData.setRxLed = true; |
---|
| 481 | } |
---|
| 482 | else |
---|
| 483 | { |
---|
| 484 | __HAL_UART_SEND_REQ(huart, UART_RXDATA_FLUSH_REQUEST); |
---|
| 485 | } |
---|
| 486 | } |
---|
| 487 | |
---|
| 488 | /* UART in mode Transmitter ------------------------------------------------*/ |
---|
| 489 | if (((isrflags & USART_ISR_TXE_TXFNF) != 0U) |
---|
| 490 | && (((cr1its & USART_CR1_TXEIE_TXFNFIE) != 0U) |
---|
| 491 | || ((cr3its & USART_CR3_TXFTIE) != 0U))) |
---|
| 492 | { |
---|
| 493 | UART_TxISR_8BIT(modbusData.uart); |
---|
| 494 | modbusData.setTxLed = true; |
---|
| 495 | } |
---|
| 496 | |
---|
| 497 | /* UART in mode Transmitter (transmission end) -----------------------------*/ |
---|
| 498 | if (((isrflags & USART_ISR_TC) != 0U) && ((cr1its & USART_CR1_TCIE) != 0U)) |
---|
| 499 | { |
---|
| 500 | modbusData.current_query = MB_QUERY_NOTHING; |
---|
| 501 | UART_EndTransmit_IT(huart); |
---|
| 502 | huart->RxState = HAL_UART_STATE_BUSY_RX; |
---|
| 503 | // /*Reset TX complete interrupt flag*/ |
---|
| 504 | // __HAL_UART_CLEAR_FLAG(huart, USART_ISR_TC); |
---|
| 505 | // /* Disable the UART Transmit Complete Interrupt */ |
---|
| 506 | // CLEAR_BIT(huart->Instance->CR1, USART_CR1_TCIE); |
---|
| 507 | // /*TX complete callback function*/ |
---|
| 508 | // HAL_UART_TxCpltCallback(huart); |
---|
| 509 | // /* Tx process is ended, restore huart->gState to Ready */ |
---|
| 510 | // huart->gState = HAL_UART_STATE_READY; |
---|
| 511 | } |
---|
| 512 | |
---|
| 513 | /* Call UART Error Call back function if need be --------------------------*/ |
---|
| 514 | if (huart->ErrorCode != HAL_UART_ERROR_NONE) |
---|
| 515 | { |
---|
| 516 | huart->RxState = HAL_UART_STATE_BUSY_RX; |
---|
| 517 | /* UART in mode Receiver ---------------------------------------------------*/ |
---|
| 518 | if (((isrflags & USART_ISR_RXNE_RXFNE) != 0U) |
---|
| 519 | && (((cr1its & USART_CR1_RXNEIE_RXFNEIE) != 0U) |
---|
| 520 | || ((cr3its & USART_CR3_RXFTIE) != 0U))) |
---|
| 521 | { |
---|
| 522 | __HAL_UART_SEND_REQ(huart, UART_RXDATA_FLUSH_REQUEST); |
---|
| 523 | huart->ErrorCode = HAL_UART_ERROR_NONE; |
---|
| 524 | } |
---|
| 525 | else if (((isrflags & USART_ISR_TXE_TXFNF) != 0U) |
---|
| 526 | && (((cr1its & USART_CR1_TXEIE_TXFNFIE) != 0U) |
---|
| 527 | || ((cr3its & USART_CR3_TXFTIE) != 0U))) |
---|
| 528 | { |
---|
| 529 | modbusData.current_query = MB_QUERY_NOTHING; |
---|
| 530 | UART_EndTransmit_IT(huart); |
---|
| 531 | huart->RxState = HAL_UART_STATE_BUSY_RX; |
---|
| 532 | modbusData.setTxLed = true; |
---|
| 533 | } |
---|
| 534 | } |
---|
| 535 | } |
---|
| 536 | |
---|
| 537 | |
---|
| 538 | |
---|
| 539 | |
---|
| 540 | |
---|
| 541 | |
---|
| 542 | |
---|
| 543 | /** |
---|
| 544 | * @brief TX interrrupt handler for 7 or 8 bits data word length . |
---|
| 545 | * @note Function is called under interruption only, once |
---|
| 546 | * interruptions have been enabled by HAL_UART_Transmit_IT(). |
---|
| 547 | * @param huart UART handle. |
---|
| 548 | * @retval None |
---|
| 549 | */ |
---|
| 550 | static void UART_TxISR_8BIT(UART_HandleTypeDef *huart) |
---|
| 551 | { |
---|
| 552 | /* Check that a Tx process is ongoing */ |
---|
| 553 | if (huart->gState == HAL_UART_STATE_BUSY_TX) |
---|
| 554 | { |
---|
| 555 | if (huart->TxXferCount == 0U) |
---|
| 556 | { |
---|
| 557 | /* Disable the UART Transmit Data Register Empty Interrupt */ |
---|
| 558 | CLEAR_BIT(huart->Instance->CR1, USART_CR1_TXEIE_TXFNFIE); |
---|
| 559 | |
---|
| 560 | /* Enable the UART Transmit Complete Interrupt */ |
---|
| 561 | SET_BIT(huart->Instance->CR1, USART_CR1_TCIE); |
---|
| 562 | } |
---|
| 563 | else |
---|
| 564 | { |
---|
| 565 | huart->Instance->TDR = (uint8_t)(*huart->pTxBuffPtr & (uint8_t)0xFF); |
---|
| 566 | huart->pTxBuffPtr++; |
---|
| 567 | huart->TxXferCount--; |
---|
| 568 | } |
---|
| 569 | } |
---|
| 570 | else |
---|
| 571 | { |
---|
| 572 | /* Disable the UART Transmit Data Register Empty Interrupt */ |
---|
| 573 | CLEAR_BIT(huart->Instance->CR1, USART_CR1_TXEIE_TXFNFIE); |
---|
| 574 | |
---|
| 575 | /* Enable the UART Transmit Complete Interrupt */ |
---|
| 576 | SET_BIT(huart->Instance->CR1, USART_CR1_TCIE); |
---|
| 577 | } |
---|
| 578 | } |
---|
| 579 | |
---|
| 580 | |
---|
| 581 | |
---|
| 582 | |
---|
| 583 | |
---|
| 584 | |
---|
| 585 | |
---|
| 586 | |
---|
| 587 | |
---|
| 588 | |
---|
| 589 | |
---|
| 590 | |
---|
| 591 | /** |
---|
| 592 | * @brief Output Compare callback in non blocking mode |
---|
| 593 | * @param htim : TIM OC handle |
---|
| 594 | * @retval None |
---|
| 595 | */ |
---|
| 596 | void mbTimerIsr(modbus_t * mb_data) |
---|
| 597 | { |
---|
| 598 | /* Capture compare 1 event */ |
---|
| 599 | mb_data->mb_rx_frame_complete=true; |
---|
| 600 | } |
---|
| 601 | |
---|
| 602 | |
---|
| 603 | void mbSend(modbus_t * mb_data ) |
---|
| 604 | { |
---|
| 605 | mb_data->current_query = MB_QUERY_SEND_DATA; |
---|
| 606 | HAL_UART_Transmit_IT(mb_data->uart, mb_data->tx_buffer, mb_data->tx_head); |
---|
| 607 | } |
---|
| 608 | |
---|
| 609 | void mbClearTxBuffer(modbus_t * mb_data) |
---|
| 610 | { |
---|
| 611 | mb_data->tx_head = 0; |
---|
| 612 | } |
---|
| 613 | |
---|
| 614 | |
---|
| 615 | |
---|
| 616 | // Compute the MODBUS RTU CRC |
---|
| 617 | uint16_t mbCrc16 ( uint8_t *buf, uint32_t len) |
---|
| 618 | { |
---|
| 619 | uint16_t crc = 0xFFFF; |
---|
| 620 | |
---|
| 621 | for (uint32_t pos = 0; pos < len; pos++) |
---|
| 622 | { |
---|
| 623 | crc ^= (uint16_t)buf[pos]; // XOR byte into least sig. byte of crc |
---|
| 624 | |
---|
| 625 | for (int i = 8; i != 0; i--) |
---|
| 626 | { // Loop over each bit |
---|
| 627 | if ((crc & 0x0001) != 0) |
---|
| 628 | { // If the LSB is set |
---|
| 629 | crc >>= 1; // Shift right and XOR 0xA001 |
---|
| 630 | crc ^= 0xA001; |
---|
| 631 | } |
---|
| 632 | else // Else LSB is not set |
---|
| 633 | { |
---|
| 634 | crc >>= 1; // Just shift right |
---|
| 635 | } |
---|
| 636 | } |
---|
| 637 | } |
---|
| 638 | |
---|
| 639 | // Note, this number has low and high bytes swapped, so use it accordingly (or swap bytes) |
---|
| 640 | return crc; |
---|
| 641 | } |
---|
| 642 | |
---|
| 643 | /* If CRC is correct returns msg_length else returns INVALID_CRC */ |
---|
| 644 | int mbCheckCrc16( uint8_t *msg, const int msg_length) |
---|
| 645 | { |
---|
| 646 | int ret; |
---|
| 647 | uint16_t crc_calc; |
---|
| 648 | uint16_t crc_received; |
---|
| 649 | |
---|
| 650 | crc_calc = mbCrc16(msg, msg_length - 2); |
---|
| 651 | crc_received = (msg[msg_length - 1] << 8) | msg[msg_length - 2]; |
---|
| 652 | |
---|
| 653 | // Check CRC of msg |
---|
| 654 | if (crc_calc == crc_received) { |
---|
| 655 | ret = msg_length; |
---|
| 656 | } else { |
---|
| 657 | ret = INVALID_CRC; |
---|
| 658 | } |
---|
| 659 | return ret; |
---|
| 660 | } |
---|
| 661 | |
---|
| 662 | uint32_t mbAppendCrc16(uint8_t * buffer, uint32_t tx_position) |
---|
| 663 | { |
---|
| 664 | uint16_t crc = mbCrc16( buffer , tx_position); |
---|
| 665 | |
---|
| 666 | uint8_t l_crc = (uint8_t) (crc & 0x00FF) ; |
---|
| 667 | uint8_t h_crc = (uint8_t) (crc >> 8); |
---|
| 668 | buffer[tx_position] = l_crc; |
---|
| 669 | tx_position++; |
---|
| 670 | buffer[tx_position] = h_crc; |
---|
| 671 | tx_position++; |
---|
| 672 | return tx_position; |
---|
| 673 | } |
---|
| 674 | |
---|
| 675 | /************************************************************************************************************ |
---|
| 676 | Function: mb_get_frame_complete |
---|
| 677 | Purpose: Rückabe ob Frame komplett empfangen wurde |
---|
| 678 | *************************************************************************************************************/ |
---|
| 679 | bool mbGetFrameComplete(modbus_t * mb_data) |
---|
| 680 | { |
---|
| 681 | return mb_data->mb_rx_frame_complete; |
---|
| 682 | } |
---|
| 683 | |
---|
| 684 | void mbClearRxFrame(modbus_t * mb_data) |
---|
| 685 | { |
---|
| 686 | // Wieder bei 0 im buffer anfangen |
---|
| 687 | mb_data->rx_head = 0; |
---|
| 688 | |
---|
| 689 | // keine Daten mehr vorhanden |
---|
| 690 | mb_data->mb_rx_frame_complete=false; |
---|
| 691 | } |
---|
| 692 | |
---|
| 693 | |
---|
| 694 | // --------------------- SLAVE FUNCTIONS --------------------------------------- |
---|
| 695 | |
---|
| 696 | #define SEND_TO_SLAVES_BUFFER_COUNT 1000 |
---|
| 697 | //static TASK_MODBUS_MASTER_Message_t xMessage[255]; |
---|
| 698 | //static TASK_MODBUS_MASTER_Message_t *pxMessage; |
---|
| 699 | static bword_t values[SEND_TO_SLAVES_BUFFER_COUNT]; |
---|
| 700 | static uint32_t y; |
---|
| 701 | static uint32_t z; |
---|
| 702 | |
---|
| 703 | uint32_t mbSlaveCheckModbusRtuQuery(modbus_t * mb_data) |
---|
| 704 | { |
---|
| 705 | uint32_t message_lengh; |
---|
| 706 | uint8_t *modbus_rx_message; |
---|
| 707 | modbus_rx_message = mb_data->rx_buffer; |
---|
| 708 | message_lengh= mb_data->rx_head; |
---|
| 709 | uint32_t slave_adress; |
---|
| 710 | slave_adress = modbus_rx_message[0]; |
---|
| 711 | |
---|
| 712 | if (message_lengh < 5) //Mindestens 5 Zeichen (Slave Adress + Function Code + 2x CRC |
---|
| 713 | { |
---|
| 714 | mbClearRxFrame(mb_data); |
---|
| 715 | printf("->Message to short"); |
---|
| 716 | return 0; |
---|
| 717 | } |
---|
| 718 | |
---|
| 719 | // Prüfe CRC |
---|
| 720 | if (mbCheckCrc16(modbus_rx_message,message_lengh) == INVALID_CRC) |
---|
| 721 | { |
---|
| 722 | printf("->Message with wrong crc"); |
---|
| 723 | mbClearRxFrame(mb_data); |
---|
| 724 | return 0; |
---|
| 725 | } |
---|
| 726 | |
---|
| 727 | if (slave_adress == MODBUS_BROADCAST_ADDRESS) |
---|
| 728 | { |
---|
| 729 | //printf("->Message with broadcast address"); |
---|
| 730 | return RESPOND_TO_QUERY; |
---|
| 731 | } |
---|
| 732 | /* auf richtige Slave Adresse checken ansonsten nicht antworten*/ |
---|
| 733 | else if (slave_adress == sysData.s.slaveAddress) |
---|
| 734 | { |
---|
| 735 | //printf("->Message with correct slave addresse"); |
---|
| 736 | return RESPOND_TO_QUERY; |
---|
| 737 | } |
---|
| 738 | |
---|
| 739 | //printf("->Message with wrong slave address"); |
---|
| 740 | mbClearRxFrame(mb_data); |
---|
| 741 | return 0; |
---|
| 742 | } |
---|
| 743 | |
---|
| 744 | void mbSlaveProcessRtuQuery(modbus_t * mb_data) |
---|
| 745 | { |
---|
| 746 | uint32_t tx_position=0; //die _Nächste_ Position in der Zeichen eingefügt werden müssen |
---|
| 747 | uint8_t *modbus_rx_message; |
---|
| 748 | modbus_rx_message = &mb_data->rx_buffer[0]; |
---|
| 749 | |
---|
| 750 | //Vorbereiten auf neues senden |
---|
| 751 | mbClearTxBuffer(mb_data); |
---|
| 752 | |
---|
| 753 | //mb_data->tx_buffer[0] = sys_data.s.vmGreenview.s.lb_slave_adress; |
---|
| 754 | mb_data->tx_buffer[0] = *modbus_rx_message; |
---|
| 755 | tx_position++; |
---|
| 756 | tx_position = mbSlaveProcessPdu(mb_data , modbus_rx_message,tx_position, *modbus_rx_message); |
---|
| 757 | |
---|
| 758 | tx_position = mbAppendCrc16(mb_data->tx_buffer ,tx_position); |
---|
| 759 | mb_data->tx_head=tx_position; |
---|
| 760 | mbSend(mb_data); |
---|
| 761 | mbClearRxFrame(mb_data); |
---|
| 762 | } |
---|
| 763 | |
---|
| 764 | uint32_t mbSlaveProcessPdu ( modbus_t * mb_data, uint8_t * msg, uint32_t tx_position, uint8_t deviceID) |
---|
| 765 | { |
---|
| 766 | uint32_t function_code; |
---|
| 767 | uint32_t ret; |
---|
| 768 | |
---|
| 769 | function_code = msg[OFFSET_FUNCTION_CODE]; |
---|
| 770 | |
---|
| 771 | switch (function_code) |
---|
| 772 | { |
---|
| 773 | case FC_READ_HOLDING_REGISTERS: |
---|
| 774 | ret= mbSlaveReadHoldingRegisters(mb_data, msg,tx_position, deviceID); |
---|
| 775 | break; |
---|
| 776 | |
---|
| 777 | case FC_WRITE_SINGLE_REGISTER: |
---|
| 778 | ret = mbSlaveWriteSingleRegister(mb_data, msg,tx_position, deviceID); |
---|
| 779 | break; |
---|
| 780 | |
---|
| 781 | case FC_WRITE_MULTIPLE_REGISTER: |
---|
| 782 | ret=mbSlaveWriteMultipleRegisters(mb_data, msg,tx_position, deviceID); |
---|
| 783 | break; |
---|
| 784 | |
---|
| 785 | default: |
---|
| 786 | ret=mbSlaveResponseException(mb_data,function_code,ILLEGAL_FUNCTION,tx_position); |
---|
| 787 | break; |
---|
| 788 | } |
---|
| 789 | |
---|
| 790 | return ret; |
---|
| 791 | } |
---|
| 792 | |
---|
| 793 | |
---|
| 794 | uint32_t mbSlaveReadHoldingRegisters(modbus_t * mb_data, uint8_t *msg, uint32_t tx_position, uint8_t deviceID) |
---|
| 795 | { |
---|
| 796 | uint32_t start_adress; |
---|
| 797 | uint32_t adress; |
---|
| 798 | uint32_t number_of_registers; |
---|
| 799 | |
---|
| 800 | /*stimmt die device ID mit der eigenen überein*/ |
---|
| 801 | if((deviceID != sysData.s.slaveAddress) && (deviceID != 0)) |
---|
| 802 | { |
---|
| 803 | return mbSlaveResponseException(mb_data,FC_WRITE_SINGLE_REGISTER,GATEWAY_PROBLEM_TARGET,tx_position); |
---|
| 804 | } |
---|
| 805 | |
---|
| 806 | start_adress = (msg[OFFSET_START_ADRESS_HI] << 8) + msg[OFFSET_START_ADRESS_LO]; |
---|
| 807 | number_of_registers = ( msg[OFFSET_NO_OF_REGISTERS_HI] << 8) + msg[OFFSET_NO_OF_REGISTERS_LO]; |
---|
| 808 | |
---|
| 809 | if ((number_of_registers < MIN_NUMBER_OF_REGISTERS_FC3) || (number_of_registers > MAX_NUMBER_OF_REGISTERS_FC3) ) |
---|
| 810 | { |
---|
| 811 | return mbSlaveResponseException(mb_data,FC_READ_HOLDING_REGISTERS,ILLEGAL_DATA_VALUE,tx_position); |
---|
| 812 | } |
---|
| 813 | |
---|
| 814 | if (start_adress+number_of_registers-1 > MAX_ADRESS) |
---|
| 815 | { |
---|
| 816 | return mbSlaveResponseException(mb_data, FC_READ_HOLDING_REGISTERS,ILLEGAL_DATA_ADDRESS,tx_position); |
---|
| 817 | } |
---|
| 818 | |
---|
| 819 | mb_data->tx_buffer[tx_position] = FC_READ_HOLDING_REGISTERS; // FUNCTION CODE |
---|
| 820 | tx_position++; |
---|
| 821 | mb_data->tx_buffer[tx_position] = number_of_registers * 2; // Bytes |
---|
| 822 | tx_position++; |
---|
| 823 | |
---|
| 824 | for(adress=start_adress;adress < (start_adress + number_of_registers);adress++) |
---|
| 825 | { |
---|
| 826 | /*Daten aus dem Speicher senden*/ |
---|
| 827 | mb_data->tx_buffer[tx_position] = sysData.mb[adress].b[1]; |
---|
| 828 | tx_position++; |
---|
| 829 | mb_data->tx_buffer[tx_position] = sysData.mb[adress].b[0]; |
---|
| 830 | tx_position++; |
---|
| 831 | } |
---|
| 832 | |
---|
| 833 | return tx_position; |
---|
| 834 | } |
---|
| 835 | |
---|
| 836 | |
---|
| 837 | uint32_t mbSlaveWriteMultipleRegisters(modbus_t * mb_data, uint8_t *msg, uint32_t tx_position, uint32_t deviceID) |
---|
| 838 | { |
---|
| 839 | |
---|
| 840 | uint32_t start_adress; |
---|
| 841 | uint32_t number_of_registers; |
---|
| 842 | uint32_t adress; |
---|
| 843 | uint32_t offset; |
---|
| 844 | |
---|
| 845 | /*stimmt die device ID mit der eigenen überein*/ |
---|
| 846 | if((deviceID != sysData.s.slaveAddress) && (deviceID != 0)) |
---|
| 847 | { |
---|
| 848 | return mbSlaveResponseException(mb_data,FC_WRITE_SINGLE_REGISTER,GATEWAY_PROBLEM_TARGET,tx_position); |
---|
| 849 | } |
---|
| 850 | |
---|
| 851 | start_adress = (msg[OFFSET_START_ADRESS_HI] << 8) + msg[OFFSET_START_ADRESS_LO]; |
---|
| 852 | number_of_registers = ( msg[OFFSET_NO_OF_REGISTERS_HI] << 8) + msg[OFFSET_NO_OF_REGISTERS_LO]; |
---|
| 853 | offset=7; |
---|
| 854 | |
---|
| 855 | if ((number_of_registers < MIN_NUMBER_OF_REGISTERS_FC16) || (number_of_registers > MAX_NUMBER_OF_REGISTERS_FC16) ) |
---|
| 856 | { |
---|
| 857 | return mbSlaveResponseException(mb_data, FC_WRITE_MULTIPLE_REGISTER,ILLEGAL_DATA_VALUE,tx_position); |
---|
| 858 | } |
---|
| 859 | |
---|
| 860 | if (start_adress+number_of_registers-1 > MAX_ADRESS) |
---|
| 861 | { |
---|
| 862 | return mbSlaveResponseException(mb_data, FC_WRITE_MULTIPLE_REGISTER,ILLEGAL_DATA_ADDRESS,tx_position); |
---|
| 863 | } |
---|
| 864 | |
---|
| 865 | /*Daten in Gerätespeicher schreiben*/ |
---|
| 866 | for(adress=start_adress;adress < (start_adress + number_of_registers);adress++) |
---|
| 867 | { |
---|
| 868 | |
---|
| 869 | |
---|
| 870 | //Schreibzugriff prüfen |
---|
| 871 | if (mb_data->accessModeTable[adress] == ACCESS_MODE_READ_ONLY) |
---|
| 872 | { |
---|
| 873 | // Schreibzugriff nicht erlaubt |
---|
| 874 | offset+=2; |
---|
| 875 | continue; |
---|
| 876 | |
---|
| 877 | } |
---|
| 878 | |
---|
| 879 | |
---|
| 880 | //Schreibzugriff prüfen |
---|
| 881 | if ((mb_data->accessModeTable[adress] == ACCESS_MODE_WRITE_PROTECTABLE ) && (*mb_data->currentAccessState == 0)) |
---|
| 882 | { |
---|
| 883 | // Schreibzugriff nicht erlaubt |
---|
| 884 | offset+=2; |
---|
| 885 | continue; |
---|
| 886 | |
---|
| 887 | } |
---|
| 888 | |
---|
| 889 | sysData.mb[adress].b[1] = msg[offset]; |
---|
| 890 | sysData.mb[adress].b[0] = msg[offset+1]; |
---|
| 891 | offset+=2; |
---|
| 892 | } |
---|
| 893 | |
---|
| 894 | mb_data->tx_buffer[tx_position] = FC_WRITE_MULTIPLE_REGISTER; // FUNCTION CODE - 1 byte |
---|
| 895 | tx_position++; |
---|
| 896 | mb_data->tx_buffer[tx_position] = start_adress >> 8; |
---|
| 897 | tx_position++; |
---|
| 898 | mb_data->tx_buffer[tx_position] = (uint8_t ) ( start_adress & 0x00FF); // start adresse 2 byte |
---|
| 899 | tx_position++; |
---|
| 900 | mb_data->tx_buffer[tx_position] = number_of_registers >> 8; |
---|
| 901 | tx_position++; |
---|
| 902 | mb_data->tx_buffer[tx_position] = (uint8_t ) ( number_of_registers & 0x00FF); // Anzahl Register 2 byte |
---|
| 903 | tx_position++; |
---|
| 904 | return tx_position; |
---|
| 905 | } |
---|
| 906 | |
---|
| 907 | |
---|
| 908 | uint32_t mbSlaveWriteSingleRegister(modbus_t * mb_data,uint8_t *msg,uint32_t tx_position, uint32_t deviceID) |
---|
| 909 | { |
---|
| 910 | |
---|
| 911 | uint32_t adress; |
---|
| 912 | |
---|
| 913 | /*stimmt die device ID mit der eigenen überein*/ |
---|
| 914 | if((deviceID != sysData.s.slaveAddress) && (deviceID != 0)) |
---|
| 915 | { |
---|
| 916 | return mbSlaveResponseException(mb_data,FC_WRITE_SINGLE_REGISTER,GATEWAY_PROBLEM_TARGET,tx_position); |
---|
| 917 | } |
---|
| 918 | |
---|
| 919 | adress = (msg[2] << 8) + msg[3]; |
---|
| 920 | |
---|
| 921 | if (adress > MAX_ADRESS) |
---|
| 922 | { |
---|
| 923 | return mbSlaveResponseException(mb_data,FC_WRITE_SINGLE_REGISTER,ILLEGAL_DATA_ADDRESS,tx_position); |
---|
| 924 | } |
---|
| 925 | |
---|
| 926 | //Schreibzugriff prüfen |
---|
| 927 | if (mb_data->accessModeTable[adress] == ACCESS_MODE_READ_ONLY) |
---|
| 928 | { |
---|
| 929 | // Schreibzugriff nicht erlaubt |
---|
| 930 | printf("Error, read only Register!\n"); |
---|
| 931 | return mbSlaveResponseException(mb_data,FC_WRITE_SINGLE_REGISTER,ILLEGAL_DATA_ADDRESS,tx_position); |
---|
| 932 | } |
---|
| 933 | |
---|
| 934 | |
---|
| 935 | //Schreibzugriff prüfen |
---|
| 936 | if ((mb_data->accessModeTable[adress] == ACCESS_MODE_WRITE_PROTECTABLE ) && (*mb_data->currentAccessState == 0)) |
---|
| 937 | { |
---|
| 938 | // Schreibzugriff nicht erlaubt |
---|
| 939 | printf("Protected Register, write not allowed!\n"); |
---|
| 940 | return mbSlaveResponseException(mb_data,FC_WRITE_SINGLE_REGISTER,ILLEGAL_DATA_ADDRESS,tx_position); |
---|
| 941 | } |
---|
| 942 | |
---|
| 943 | |
---|
| 944 | |
---|
| 945 | /*schreibe Daten in eigenen Speicher*/ |
---|
| 946 | sysData.mb[adress].b[1] = msg[4]; |
---|
| 947 | sysData.mb[adress].b[0] = msg[5]; |
---|
| 948 | |
---|
| 949 | mb_data->tx_buffer[tx_position]= FC_WRITE_SINGLE_REGISTER; // FUNCTION CODE |
---|
| 950 | tx_position++; |
---|
| 951 | mb_data->tx_buffer[tx_position]= adress >> 8; |
---|
| 952 | tx_position++; |
---|
| 953 | mb_data->tx_buffer[tx_position]= (uint8_t ) ( adress & 0x00FF); |
---|
| 954 | |
---|
| 955 | tx_position++; |
---|
| 956 | mb_data->tx_buffer[tx_position]= msg[4]; |
---|
| 957 | tx_position++; |
---|
| 958 | mb_data->tx_buffer[tx_position]= msg[5]; |
---|
| 959 | tx_position++; |
---|
| 960 | |
---|
| 961 | return tx_position; |
---|
| 962 | } |
---|
| 963 | |
---|
| 964 | |
---|
| 965 | uint32_t mbSlaveResponseException(modbus_t * mb_data, uint32_t function_code, uint32_t exception_code,uint32_t tx_position ) |
---|
| 966 | { |
---|
| 967 | function_code += 0x80; |
---|
| 968 | mb_data->tx_buffer[tx_position] = function_code; // FUNCTION CODE |
---|
| 969 | tx_position++; |
---|
| 970 | mb_data->tx_buffer[tx_position] = exception_code; // |
---|
| 971 | tx_position++; |
---|
| 972 | return tx_position; |
---|
| 973 | } |
---|
| 974 | |
---|
| 975 | |
---|
| 976 | //---------------------------- UNKNOWN ----------------------------------------- |
---|
| 977 | //- - |
---|
| 978 | //------------------------------------------------------------------------------ |
---|
| 979 | |
---|
| 980 | #endif |
---|
| 981 | |
---|